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Google Keyword Rankings for : 807 amplifier circuit
1
The VK1SV 6J5/807 audio amplifier
https://people.physics.anu.edu.au/~dxt103/audio/807/
A resistance-coupled voltage amplifier seems to be all that is needed. In the 6J5 datasheet, we get some instructions on how to do this. The schematic is as ...
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https://people.physics.anu.edu.au/~dxt103/audio/807/
A resistance-coupled voltage amplifier seems to be all that is needed. In the 6J5 datasheet, we get some instructions on how to do this. The schematic is as ...
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2
"807" Push-Pull amp
http://www.pmillett.com/807pp_amp.htm
"807" Push-Pull amp (5B/254M tubes driven by the Push-Pull driver board) ... Download a PDF schematic of the amp wiring, the driver PCB schematic showing ...
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http://www.pmillett.com/807pp_amp.htm
"807" Push-Pull amp (5B/254M tubes driven by the Push-Pull driver board) ... Download a PDF schematic of the amp wiring, the driver PCB schematic showing ...
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3
807 Tube Triode Connected : Repository-circuits - Pinterest
https://www.pinterest.com/pin/579486677023010470/
It is based around 12AU7 / ECC82 audiophile vacuum tube that provides warm, rich and smooth sound expected from audiophile amplifiers. The 12AU7 (ECC82) is a ...
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https://www.pinterest.com/pin/579486677023010470/
It is based around 12AU7 / ECC82 audiophile vacuum tube that provides warm, rich and smooth sound expected from audiophile amplifiers. The 12AU7 (ECC82) is a ...
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4
807 p-p tube amp schematic - diyAudio
https://www.diyaudio.com/community/threads/807-p-p-tube-amp-schematic.187824/
Well time has come for me to try and build an 807 amp. I have 2indentical power and OPT x-formers, and 4 identical chokes to work for this ...
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https://www.diyaudio.com/community/threads/807-p-p-tube-amp-schematic.187824/
Well time has come for me to try and build an 807 amp. I have 2indentical power and OPT x-formers, and 4 identical chokes to work for this ...
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5
VU2ATN - Linear Amplifier Using 807 Valves - QRO - QSL.net
https://www.qsl.net/vu2awc/ham_radio_india_v/vu2atn_qro/vu2atn.htm
Here is the circuit diagram with values marked: The transistorized linear driver is expected to swing up to 60 to 70 mA with signal (AF) input. The transistor ...
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https://www.qsl.net/vu2awc/ham_radio_india_v/vu2atn_qro/vu2atn.htm
Here is the circuit diagram with values marked: The transistorized linear driver is expected to swing up to 60 to 70 mA with signal (AF) input. The transistor ...
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6
807 (1625) Vacuum Tube Audio Amplifier With Triad Output ...
https://www.youtube.com/watch?v=c90sgZj5rxE
ElPaso TubeAmps
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https://www.youtube.com/watch?v=c90sgZj5rxE
ElPaso TubeAmps
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7
807 Tube Audio Amplifier Schematic - Download Top Soft
https://rescagicio.tistory.com/3
Dainius Zokas Valve Amplifiers. Quad Valve Amplifier Mini Audio. Nov 29, 2011 I intend to use 807 beam tetrodes in a push-pull circuit triode ...
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https://rescagicio.tistory.com/3
Dainius Zokas Valve Amplifiers. Quad Valve Amplifier Mini Audio. Nov 29, 2011 I intend to use 807 beam tetrodes in a push-pull circuit triode ...
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8
Single-Ended 807 Amplifier - Evil Science Audio
https://evilscienceaudio.com/2014/05/27/updated-single-ended-807/
It's a fixed bias circuit, not cathode bias. The 10 Ohms are present for allowing the current level to be measured (50ma = .5V). Very little ...
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https://evilscienceaudio.com/2014/05/27/updated-single-ended-807/
It's a fixed bias circuit, not cathode bias. The 10 Ohms are present for allowing the current level to be measured (50ma = .5V). Very little ...
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9
Anyone out there have a 'simple' SE circuit for an 807 type amp?
https://audiokarma.org/forums/index.php?threads/anyone-out-there-have-a-simple-se-circuit-for-an-807-type-amp.993338/
Thinking about building a 'stereo' SE amp using an 807 for the outputs. Just wondering if anyone out there might have done a previous build ...
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https://audiokarma.org/forums/index.php?threads/anyone-out-there-have-a-simple-se-circuit-for-an-807-type-amp.993338/
Thinking about building a 'stereo' SE amp using an 807 for the outputs. Just wondering if anyone out there might have done a previous build ...
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10
Williams 807 Amp EDIT: Made Decision - Antique Radios
https://antiqueradios.com/forums/viewtopic.php?f=13&t=237907
You mean Williamson---the ubiquitous circuit which runs the screen grids off taps on the output trans. What are the jacks that are connected to the 807 cathodes ...
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https://antiqueradios.com/forums/viewtopic.php?f=13&t=237907
You mean Williamson---the ubiquitous circuit which runs the screen grids off taps on the output trans. What are the jacks that are connected to the 807 cathodes ...
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11
PCB circuit Finished board For FU-7 807 tube amplifier ...
https://www.ebay.com/itm/165266268177
Five-pole tube as a preamp * Applicable to FU-7(807) tube, But also for ... PCB circuit Finished board For FU-7 807 tube amplifier use (No Tubes Included).
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https://www.ebay.com/itm/165266268177
Five-pole tube as a preamp * Applicable to FU-7(807) tube, But also for ... PCB circuit Finished board For FU-7 807 tube amplifier use (No Tubes Included).
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12
807 tube amp, any ideas?
https://vintage-radio.net/forum/showthread.php?t=178887
Any valve amplifier depends on the OPT, get the best you can and the biggest, EG for a 20w amp get a 100w jobbie. I've attached a schematic for ...
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https://vintage-radio.net/forum/showthread.php?t=178887
Any valve amplifier depends on the OPT, get the best you can and the biggest, EG for a 20w amp get a 100w jobbie. I've attached a schematic for ...
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13
807.pdf - Frank's electron Tube Data sheets
https://frank.pocnet.net/sheets/084/8/807.pdf
ac or dc volts amp. CCS. 400 max. 125 max. 50 max. 25 max. ·. 4. 807 ... Maximum Circuit Values (CCS or ICAS):. Grid-No.1-Circuit Resistance: 00.
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https://frank.pocnet.net/sheets/084/8/807.pdf
ac or dc volts amp. CCS. 400 max. 125 max. 50 max. 25 max. ·. 4. 807 ... Maximum Circuit Values (CCS or ICAS):. Grid-No.1-Circuit Resistance: 00.
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14
High Fidelity Hifi 50w+50w Fu-7 (807) Tube Amplifier Push ...
https://www.aliexpress.com/item/1005001694564244.html
Traditional inverter circuits all use transformers for phase inversion. The characteristics are that the push-pull arms are easy to be symmetrical, the circuit ...
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https://www.aliexpress.com/item/1005001694564244.html
Traditional inverter circuits all use transformers for phase inversion. The characteristics are that the push-pull arms are easy to be symmetrical, the circuit ...
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15
807 (vacuum tube) - Wikipedia
https://en.wikipedia.org/wiki/807_(vacuum_tube)
For this reason, and due to high costs of required quality components, manufacturers soon abandoned the Williamson circuit in favour of inherently more stable, ...
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https://en.wikipedia.org/wiki/807_(vacuum_tube)
For this reason, and due to high costs of required quality components, manufacturers soon abandoned the Williamson circuit in favour of inherently more stable, ...
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16
RCA Ham Tips - World Radio History
https://worldradiohistory.com/ARCHIVE-RCA/RCA-Ham-TIps/RCA-Ham-Tips-47-05-06.pdf
807's VERSATILE IN RF SERVICE AND CLASS B MODULATION ... Fig. 3. Schematic of the 150-watt final amplifier using a pair of 807's.
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https://worldradiohistory.com/ARCHIVE-RCA/RCA-Ham-TIps/RCA-Ham-Tips-47-05-06.pdf
807's VERSATILE IN RF SERVICE AND CLASS B MODULATION ... Fig. 3. Schematic of the 150-watt final amplifier using a pair of 807's.
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17
807 Amps
https://www.bonavolta.ch/hobby/en/audio/807.htm
Menu: 807 PP. 807 Push-Pull. Amplifier. Schematic from David Sarser & Melvin C. Sprinkle (November 1949). Power Supply. Back to Top.
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https://www.bonavolta.ch/hobby/en/audio/807.htm
Menu: 807 PP. 807 Push-Pull. Amplifier. Schematic from David Sarser & Melvin C. Sprinkle (November 1949). Power Supply. Back to Top.
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18
75 / 150 se / pp 807 monoblock - Manley Labs
https://www.manley.com/s/75-150-SE-PP-807-MonoBlocks.pdf
for choosing the Manley 75 / 150 SE / PP 807 MONOBLOCK Amplifiers. ... circuit. Most solid state amps can be operated without a load or speaker and some can ...
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https://www.manley.com/s/75-150-SE-PP-807-MonoBlocks.pdf
for choosing the Manley 75 / 150 SE / PP 807 MONOBLOCK Amplifiers. ... circuit. Most solid state amps can be operated without a load or speaker and some can ...
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19
HEX-807 HF Amplifier 150W-PEP - VK3-ZVX
https://vk3zvx.com/articles/hex-807-hf-amplifier-150w-pep
HEX807-Amplifier-schematic-01. HEX807-Amplifier-schematic-03. HEX807-Amplifier-schematic-04. HEX807-Amplifier-schematic-02. HEX807-Amplifier-schematic-05.
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https://vk3zvx.com/articles/hex-807-hf-amplifier-150w-pep
HEX807-Amplifier-schematic-01. HEX807-Amplifier-schematic-03. HEX807-Amplifier-schematic-04. HEX807-Amplifier-schematic-02. HEX807-Amplifier-schematic-05.
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20
Williamson ultralinear amplifier schematics - Tubebooks.org
http://www.tubebooks.org/file_downloads/stancor_ul_schematics.pdf
EQUALIZE 807 CATHODE CURRENT. Jona. STANCOR A-8054-. 100. OUTPUT. C 8 16. 5K. 4. Pre-amplifier and Tone Control Suggestions. The basic amplifier circuit ...
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http://www.tubebooks.org/file_downloads/stancor_ul_schematics.pdf
EQUALIZE 807 CATHODE CURRENT. Jona. STANCOR A-8054-. 100. OUTPUT. C 8 16. 5K. 4. Pre-amplifier and Tone Control Suggestions. The basic amplifier circuit ...
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21
807pp cathode feedback cfb monoblock Tube amplifier using ...
https://www.diyparadiso.com/807cfbpp1.htm
A mighty 807parallell CFB push-pull amp ... So he ask me for a schematic with these tubes and he wants power for possible PA application but he lacks cash, ...
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https://www.diyparadiso.com/807cfbpp1.htm
A mighty 807parallell CFB push-pull amp ... So he ask me for a schematic with these tubes and he wants power for possible PA application but he lacks cash, ...
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22
Type 807 Tube RF amplifier with transistor a pre amp
https://forum.allaboutcircuits.com/threads/type-807-tube-rf-amplifier-with-transistor-a-pre-amp.178299/
I am thinking of using transistors in pre amplifier and 807 as final ... I found some popular designs, but all them are fully tube circuits.
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https://forum.allaboutcircuits.com/threads/type-807-tube-rf-amplifier-with-transistor-a-pre-amp.178299/
I am thinking of using transistors in pre amplifier and 807 as final ... I found some popular designs, but all them are fully tube circuits.
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23
RARE STANCOR Williamson Ultralinear Circuit 807 ...
https://reverb.com/item/9722610-rare-stancor-williamson-ultralinear-circuit-807-ch2133-tube-audio-amplifier-supply-untested
RARE Standard Transformer Corp. (STANCOR) Williamson Ultralinear Circuit 807 TRIODE Tube CH-2133 AUDIO Amplifier & CH-2134 POWER SUPPLY!
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https://reverb.com/item/9722610-rare-stancor-williamson-ultralinear-circuit-807-ch2133-tube-audio-amplifier-supply-untested
RARE Standard Transformer Corp. (STANCOR) Williamson Ultralinear Circuit 807 TRIODE Tube CH-2133 AUDIO Amplifier & CH-2134 POWER SUPPLY!
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24
Sketches & Info - Blueglow Electronics - WordPress.com
https://blueglowelectronics.wordpress.com/diagrams/
Analog Discovery 2 – Audio Analyzer & Dummy Load Box Setup Diagram – 2019 Version ... 807STC. Silvertone (Sears) EL84 Tube Console Amplifier Schematic ...
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https://blueglowelectronics.wordpress.com/diagrams/
Analog Discovery 2 – Audio Analyzer & Dummy Load Box Setup Diagram – 2019 Version ... 807STC. Silvertone (Sears) EL84 Tube Console Amplifier Schematic ...
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25
Extended Class A and Simul-Class TM Technology
https://www.ampbooks.com/mobile/classic-circuits/extended-a/
There are four 807 beam power tetrodes in the circuit. On each side of the transformer, one tube is triode-connected and the other is tetrode-connected.3 The ...
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https://www.ampbooks.com/mobile/classic-circuits/extended-a/
There are four 807 beam power tetrodes in the circuit. On each side of the transformer, one tube is triode-connected and the other is tetrode-connected.3 The ...
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26
Designing a hybrid RF ampilifier with tube and transistors
https://electronics.stackexchange.com/questions/560673/designing-a-hybrid-rf-ampilifier-with-tube-and-transistors
Since I have only one tube so I want to use transistors for the rest of the power amplifier circuit. The 807 tube will be used in the final ...
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https://electronics.stackexchange.com/questions/560673/designing-a-hybrid-rf-ampilifier-with-tube-and-transistors
Since I have only one tube so I want to use transistors for the rest of the power amplifier circuit. The 807 tube will be used in the final ...
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27
Single Ended 807 amplifier | AVForums South Africa
https://www.avforums.co.za/threads/61465/
Here is a schematic for those interested: ... Beautiful 807 Amp! I would like to know the anodic tension to be applied to 807. Thanks.
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https://www.avforums.co.za/threads/61465/
Here is a schematic for those interested: ... Beautiful 807 Amp! I would like to know the anodic tension to be applied to 807. Thanks.
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28
807 tubes galore. Opinions and tips on usage of this big bottle
https://hifihaven.org/index.php?threads/807-tubes-galore-opinions-and-tips-on-usage-of-this-big-bottle.7820/page-2
Single-Ended 807 Amplifier ... The screen grid voltage limit on the 807 would have me hesitant to use it in a Williamson circuit.
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https://hifihaven.org/index.php?threads/807-tubes-galore-opinions-and-tips-on-usage-of-this-big-bottle.7820/page-2
Single-Ended 807 Amplifier ... The screen grid voltage limit on the 807 would have me hesitant to use it in a Williamson circuit.
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29
The Design of a High Fidelity Amplifier - Dalmura
https://dalmura.com.au/static/A515.pdf
characteristics to types 6L6 and 807. ... arranged for a number of 807 valves to be placed on ... fier was then wired up in accordance with the circuit.
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https://dalmura.com.au/static/A515.pdf
characteristics to types 6L6 and 807. ... arranged for a number of 807 valves to be placed on ... fier was then wired up in accordance with the circuit.
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30
807 Modulator-65W output - EEVblog
https://www.eevblog.com/forum/rf-microwave/807-modulator-65w-output/
The 6BL8 input circuit is a very nice low-distortion design lifted from a 50W RCA audio amplifier, but it was designed for a 25v output ...
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https://www.eevblog.com/forum/rf-microwave/807-modulator-65w-output/
The 6BL8 input circuit is a very nice low-distortion design lifted from a 50W RCA audio amplifier, but it was designed for a 25v output ...
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31
Build Your Own Transmitter - G8WRB
https://www.g8wrb.co.uk/data/Eimac/Build-Your-Own-Transmitter.pdf
Preamplifier, line amplifier, and power supply ... Control-circuit protection for the Eimac 4-250A ... 807, which can be operated as either an amplifier.
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https://www.g8wrb.co.uk/data/Eimac/Build-Your-Own-Transmitter.pdf
Preamplifier, line amplifier, and power supply ... Control-circuit protection for the Eimac 4-250A ... 807, which can be operated as either an amplifier.
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32
807.pdf - Frank's electron Tube Data sheets
https://tube-data.com/sheets/049/8/807.pdf
25 max. ac or dc volts amp. 807. Pin 4 - Cathode, umhos. Pin 5-Heater ... 1-Circuit Resistance:' 00. With fixed bias. With cathode bias. (RCA). 807.
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https://tube-data.com/sheets/049/8/807.pdf
25 max. ac or dc volts amp. 807. Pin 4 - Cathode, umhos. Pin 5-Heater ... 1-Circuit Resistance:' 00. With fixed bias. With cathode bias. (RCA). 807.
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33
Musician's Amplifier - Elektronikjk
http://www.elektronikjk.com/elektroakustyka/wzmacniacze/wzmacniacze_lampowe/Audio-1949-Nov.pdf
ode circuit of the 807 tubes contains a variable resistor Pi, which is set to give equal current in each tube. A closed circuit jack is provided in the ...
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http://www.elektronikjk.com/elektroakustyka/wzmacniacze/wzmacniacze_lampowe/Audio-1949-Nov.pdf
ode circuit of the 807 tubes contains a variable resistor Pi, which is set to give equal current in each tube. A closed circuit jack is provided in the ...
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34
EL34s or 807s chooses? - Google Groups
https://groups.google.com/g/rec.audio.tubes/c/WI6uwxLMzyk
drive circuit and feedback loop. You didn't mention which circuit ... amplifiers and used the 807 over the 6L6GC 'cuz he needed to run a
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https://groups.google.com/g/rec.audio.tubes/c/WI6uwxLMzyk
drive circuit and feedback loop. You didn't mention which circuit ... amplifiers and used the 807 over the 6L6GC 'cuz he needed to run a
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35
Linear HF amp using 807's - narkive
https://rec.radio.amateur.homebrew.narkive.com/WgmdHmFz/linear-hf-amp-using-807-s
combinations of 4 to 12 of the 1625 tubes, the 12 volt version of the 807. They would put out about 25 watts of carrier for each tube used. The circuit used ...
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https://rec.radio.amateur.homebrew.narkive.com/WgmdHmFz/linear-hf-amp-using-807-s
combinations of 4 to 12 of the 1625 tubes, the 12 volt version of the 807. They would put out about 25 watts of carrier for each tube used. The circuit used ...
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36
807s in parallel - robkalmeijer.nl
https://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/qst/1955/08/page18/index.html
Circuit of the parallel 807 amplifier. partlist fig. 1. C1, Not needed if driver has output coupling capacitor. C4, 250 pF 1200 volt variable ...
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https://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/qst/1955/08/page18/index.html
Circuit of the parallel 807 amplifier. partlist fig. 1. C1, Not needed if driver has output coupling capacitor. C4, 250 pF 1200 volt variable ...
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37
High-Fidelity - Audio Power
https://conradhoffman.com/papers_lib/NRN_audio_amps_1956_17_3.pdf
this circuit, equal cathode and plate resistors are ... Along with the development of amplifier circuits ... used type 1614 and type 807 tubes.
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https://conradhoffman.com/papers_lib/NRN_audio_amps_1956_17_3.pdf
this circuit, equal cathode and plate resistors are ... Along with the development of amplifier circuits ... used type 1614 and type 807 tubes.
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38
"Classic" Single Ended Tube Output Transformers - (1627
http://www.hammondmfg.com/1627.htm
Core is gapped to reduce core saturation in Class-A tube amplifier circuits. ... 6AQ5, 6V6, 6L6, 807, 5881, 6550, EL84. 1642SE. Parallel - 211, 572, 811A, ...
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http://www.hammondmfg.com/1627.htm
Core is gapped to reduce core saturation in Class-A tube amplifier circuits. ... 6AQ5, 6V6, 6L6, 807, 5881, 6550, EL84. 1642SE. Parallel - 211, 572, 811A, ...
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39
Building the Williamson Amplifier - Pearl HiFi
https://www.pearl-hifi.com/06_Lit_Archive/02_PEARL_Arch/Vol_02/Sec_07/243_Building_the_Williamson_Amp.pdf
This tube has greater power capabili ties than the 807 and will provide up to 25% more output. One deviation has been permitted in the circuit and is based on ...
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https://www.pearl-hifi.com/06_Lit_Archive/02_PEARL_Arch/Vol_02/Sec_07/243_Building_the_Williamson_Amp.pdf
This tube has greater power capabili ties than the 807 and will provide up to 25% more output. One deviation has been permitted in the circuit and is based on ...
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40
Black Knight | OMA Amplifiers - Oswalds Mill Audio
https://oswaldsmillaudio.com/black_knight
The OMA Black Knight amplifier is our only push pull amplifier, using the 807 transmitting tube connected in triode mode. This dual chassis design, ...
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https://oswaldsmillaudio.com/black_knight
The OMA Black Knight amplifier is our only push pull amplifier, using the 807 transmitting tube connected in triode mode. This dual chassis design, ...
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41
PCB circuit Finished board For FU-7 807 tube amplifier use ...
https://picclick.com/PCB-circuit-Finished-board-For-FU-7-807-tube-312410999080.html
PCB CIRCUIT FINISHED board For FU-7 807 tube amplifier use (No Tubes Included) - $111.75. FOR SALE! Parameters: Board Size: 240x135mm Features: * Using ...
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https://picclick.com/PCB-circuit-Finished-board-For-FU-7-807-tube-312410999080.html
PCB CIRCUIT FINISHED board For FU-7 807 tube amplifier use (No Tubes Included) - $111.75. FOR SALE! Parameters: Board Size: 240x135mm Features: * Using ...
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42
RCA Guide for Transmitting Tubes 1942 - NJ7P
http://www.nj7p.org/Manuals/PDFs/Tubes/RCA-gfat-1942.pdf
An r-f amplifier circuit using the RCA-807 is shown on this page. It is capable of producing a power output of approxi- mately 50 watts as an r-f amplifier ...
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http://www.nj7p.org/Manuals/PDFs/Tubes/RCA-gfat-1942.pdf
An r-f amplifier circuit using the RCA-807 is shown on this page. It is capable of producing a power output of approxi- mately 50 watts as an r-f amplifier ...
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43
The Williamson Amplifier
http://www.r-type.org/pdfs/dtnw-amp.pdf
Modifications and additions include pre-amplifier circuits and ... (A model is also available for American 807 tubes, see the modified circuit in “Audio ...
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http://www.r-type.org/pdfs/dtnw-amp.pdf
Modifications and additions include pre-amplifier circuits and ... (A model is also available for American 807 tubes, see the modified circuit in “Audio ...
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44
Sound Practices - FIDELITY Magazin
https://www.fidelity-online.de/wp-content/uploads/2016/02/SOUND-Practices-2.pdf
At the closing stage of the vacuum tube amplifier age, tube circuit ... 807. 24.26dB. Ε. -28.75dB. Fig. Gain block diagram of 807 amplifier.
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https://www.fidelity-online.de/wp-content/uploads/2016/02/SOUND-Practices-2.pdf
At the closing stage of the vacuum tube amplifier age, tube circuit ... 807. 24.26dB. Ε. -28.75dB. Fig. Gain block diagram of 807 amplifier.
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45
6L6 Tube / Valve: 6L6G & 807 - Electronics Notes
https://www.electronics-notes.com/articles/history/vacuum-tube-thermionic-valve/6l6-valve-tube.php
... in many amplifiers and its development the 807 used in radio transmitters. ... kink in the characteristic and this lead to instability in the circuit.
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https://www.electronics-notes.com/articles/history/vacuum-tube-thermionic-valve/6l6-valve-tube.php
... in many amplifiers and its development the 807 used in radio transmitters. ... kink in the characteristic and this lead to instability in the circuit.
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46
The RCA "807 in Special Triode Connection" gets a new life ...
http://amfone.net/Amforum/index.php?topic=44390.0
I can't explain it better that the author "smoking-amp" who has ... I'd be concerned in the circuit below linked, with control grid ...
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http://amfone.net/Amforum/index.php?topic=44390.0
I can't explain it better that the author "smoking-amp" who has ... I'd be concerned in the circuit below linked, with control grid ...
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47
100 Amplifiers – Part 1 , 1916 – 45 | Lilienthal Engineering
http://lilienthalengineering.com/100-amplifiers-chapter-1
The first 70 years of vacuum tube/thermionic valve audio amplifiers. I have redrawn most of the original schematics. The point is to make the circuits clear and ...
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http://lilienthalengineering.com/100-amplifiers-chapter-1
The first 70 years of vacuum tube/thermionic valve audio amplifiers. I have redrawn most of the original schematics. The point is to make the circuits clear and ...
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48
Here's a SE amp design that features Fixed Bias for the 807 ...
https://www.reddit.com/r/diytubes/comments/xjg3wa/heres_a_se_amp_design_that_features_fixed_bias/
For a stereo amp, would I build 2 complete circuits? How do I wire the FWB for a negative supply?
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https://www.reddit.com/r/diytubes/comments/xjg3wa/heres_a_se_amp_design_that_features_fixed_bias/
For a stereo amp, would I build 2 complete circuits? How do I wire the FWB for a negative supply?
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49
Search of Tubes Asylum
https://db.audioasylum.com/cgi/search.mpl?forum=tubes&searchtext=807+tube
I came upon a large lot of 807 tubes and found this amp while poking around ... I have Williamson circuit running in Triode with 420 volts on the plate...
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https://db.audioasylum.com/cgi/search.mpl?forum=tubes&searchtext=807+tube
I came upon a large lot of 807 tubes and found this amp while poking around ... I have Williamson circuit running in Triode with 420 volts on the plate...
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50
Single-Ended 807 Tube Amplifier - DIY Audio Projects
http://diyaudioprojects.com/Gallery/displayimage.php?pid=720
I have stated in the past that my mate Don makes an amp a month. This month Don has completed an 807 amp based on a schematic designed by ...
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http://diyaudioprojects.com/Gallery/displayimage.php?pid=720
I have stated in the past that my mate Don makes an amp a month. This month Don has completed an 807 amp based on a schematic designed by ...
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51
Tube 807 Push Pull Amplifier Stalien - Old Schematics
https://oldschematic.com/2019/04/28/push-pull-807-tube-amplifier-stalien/
Stalien Push Pull Tube Amplifier using 807. 807 integrated amplifier tubes in triode mode, chosen, so that the amp has enough power.
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https://oldschematic.com/2019/04/28/push-pull-807-tube-amplifier-stalien/
Stalien Push Pull Tube Amplifier using 807. 807 integrated amplifier tubes in triode mode, chosen, so that the amp has enough power.
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52
RCA Ham Tips - N4TRB Amateur Radio
http://n4trb.com/AmateurRadio/RCA_Ham_Tips/rca_ham_tips.htm
Versatile Operation Brings Popularity to RCA-807; Frequency Easily Checked with RCA ... Circuit UC-23 Shows Single-Ended 811 R-F Amplifier for CW Telegraphy ...
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http://n4trb.com/AmateurRadio/RCA_Ham_Tips/rca_ham_tips.htm
Versatile Operation Brings Popularity to RCA-807; Frequency Easily Checked with RCA ... Circuit UC-23 Shows Single-Ended 811 R-F Amplifier for CW Telegraphy ...
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53
SE34I.6 | Select Zen Triode Integrated Amplifier - DECWARE
https://www.decwareproducts.com/se34i-6
Quality. · The Sound - it's what we all chase. · Bass performance, Midrange Magic, Sound Stage, Liquidity, Honesty. · No circuit boards or solid state parts. · A ...
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https://www.decwareproducts.com/se34i-6
Quality. · The Sound - it's what we all chase. · Bass performance, Midrange Magic, Sound Stage, Liquidity, Honesty. · No circuit boards or solid state parts. · A ...
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54
807 - 4 tubes
http://4tubes.com/1-DATASHEETS/SCANS-Original/!5-Numbers-100--999/807_STC_Datasheet.pdf
The valve type 807 is an Indirectly heated beam tetrode designed for use ... The circuit of a typical amplifier giving 75 watts output from two type 807 ...
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http://4tubes.com/1-DATASHEETS/SCANS-Original/!5-Numbers-100--999/807_STC_Datasheet.pdf
The valve type 807 is an Indirectly heated beam tetrode designed for use ... The circuit of a typical amplifier giving 75 watts output from two type 807 ...
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55
807 (STC Australia data) (704 Kb) - TubeZone
http://www.tubezone.net/pdf/807stc.pdf
In the output stages of Public Address equipment, or as an RF amplifier or ... The circuit of a typical amplifier giving 75 watts output from two type 807 ...
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http://www.tubezone.net/pdf/807stc.pdf
In the output stages of Public Address equipment, or as an RF amplifier or ... The circuit of a typical amplifier giving 75 watts output from two type 807 ...
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56
THE WILLIAMSON AMPLIFIER - The MESSUI Place
http://messui.polygonal-moogle.com/valves/VR199007.pdf
amplifier circuit of 1939 ... Experimental audio amplifiers were first made about 75 years ago. ... 807, but had much higher screen voltage ratings.
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http://messui.polygonal-moogle.com/valves/VR199007.pdf
amplifier circuit of 1939 ... Experimental audio amplifiers were first made about 75 years ago. ... 807, but had much higher screen voltage ratings.
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57
diytube.com • View topic - 807 SE Amp
http://www.diytube.com/phpBB2/viewtopic.php?t=4484
I used Mikael Abdellah's KT88 SE schematic with 6N1P LED biased, and 6E3S-E as output. The 6N1Ps could just barely get the 6E3Ss to clip. But I ...
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http://www.diytube.com/phpBB2/viewtopic.php?t=4484
I used Mikael Abdellah's KT88 SE schematic with 6N1P LED biased, and 6E3S-E as output. The 6N1Ps could just barely get the 6E3Ss to clip. But I ...
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58
Comparing Eight Tubes For Low Power Amplifiers Article ...
https://www.enjoythemusic.com/magazine/manufacture/1108/
See the table in the output schematic for proper values. 1 Pentode Mode 2 Using 5K transformer * Pwr – measured 5% 2nd harmonic distortion in Triode mode ...
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https://www.enjoythemusic.com/magazine/manufacture/1108/
See the table in the output schematic for proper values. 1 Pentode Mode 2 Using 5K transformer * Pwr – measured 5% 2nd harmonic distortion in Triode mode ...
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59
The Official RCA MI-12188A Audio Amplifier Shrine
https://www.montagar.com/~patj/mi12188a.htm
The original circuit. The original design, born of the post-WWII glut of 5U4's, 0D3's, 6SL7's, and of course RCA JAN-807's, is fairly tough, except that the ...
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https://www.montagar.com/~patj/mi12188a.htm
The original circuit. The original design, born of the post-WWII glut of 5U4's, 0D3's, 6SL7's, and of course RCA JAN-807's, is fairly tough, except that the ...
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60
The Champ CBA-20807 1000 Watt Amplifier - Part 1
http://www.chambonino.com/construct/const13.html
The final amp will have: 20 x 807's for the main output of hopefully 1000 ... and 4 x 6SN7 for the pre-amp, tone circuit, splitter and push-pull driver.
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http://www.chambonino.com/construct/const13.html
The final amp will have: 20 x 807's for the main output of hopefully 1000 ... and 4 x 6SN7 for the pre-amp, tone circuit, splitter and push-pull driver.
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61
807 Beam Tetrode - Billington Export Ltd
http://www.tube-and-valve-electronics.co.uk/product_information/807_Electron_Tube.asp
807 Beam Tetrode mounting position diagram ... Graph showing valve type 807 triode connection class X amplifier power output and distortion versus A.F..
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http://www.tube-and-valve-electronics.co.uk/product_information/807_Electron_Tube.asp
807 Beam Tetrode mounting position diagram ... Graph showing valve type 807 triode connection class X amplifier power output and distortion versus A.F..
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62
807 - STC.pdf
http://www.op316.com/pdf/tube-p5b/807-stc.pdf
807. Class 'A' Amplifier (Push-Pull):. TRIODE CONNECTION (Pin 2 and cop ... The effective resistance per grid circuit presented by the driver valve and/or.
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http://www.op316.com/pdf/tube-p5b/807-stc.pdf
807. Class 'A' Amplifier (Push-Pull):. TRIODE CONNECTION (Pin 2 and cop ... The effective resistance per grid circuit presented by the driver valve and/or.
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63
Electronic – Tube Transmitter Issues - Valuable Tech Notes
https://itecnotes.com/electrical/electronic-tube-transmitter-issues/
In the diagram, you'll notice the switch that controls the 807 screen grid voltage, also controls the EL84 audio amplifier plate voltage.
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https://itecnotes.com/electrical/electronic-tube-transmitter-issues/
In the diagram, you'll notice the switch that controls the 807 screen grid voltage, also controls the EL84 audio amplifier plate voltage.
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64
Welcome To the Hoffman Amplifiers Forum - EL34 World
https://el34world.com/Forum/index.php?topic=20467.0
Hoffman Amplifiers Tube Amp Forum, Feeding 807 G2 - Disquisitions . ... in some old circuit I've seen Gas voltage regulators Tubes
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https://el34world.com/Forum/index.php?topic=20467.0
Hoffman Amplifiers Tube Amp Forum, Feeding 807 G2 - Disquisitions . ... in some old circuit I've seen Gas voltage regulators Tubes
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65
Ham Amplifier
https://k3uh.com/test/Ham_Amplifier.htm
14, Single-Ended RF Amplifier Circuit from 1930's (750 Watts) ... 16, 100W Linear Amp using Four 807's, Schematic is a little, um, schematic, 100-300 Watts ...
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https://k3uh.com/test/Ham_Amplifier.htm
14, Single-Ended RF Amplifier Circuit from 1930's (750 Watts) ... 16, 100W Linear Amp using Four 807's, Schematic is a little, um, schematic, 100-300 Watts ...
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66
Williamson_Amplifier.pdf
https://nvhrbiblio.nl/schema/Williamson_Amplifier.pdf
Modifications and additions include pre-amplifier circuits and ... (A model is also available for American 807 tubes, see the modified circuit in “Audio ...
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https://nvhrbiblio.nl/schema/Williamson_Amplifier.pdf
Modifications and additions include pre-amplifier circuits and ... (A model is also available for American 807 tubes, see the modified circuit in “Audio ...
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67
Rca 807 tube amplifier
https://all-audio.pro/en/c1/datasheets/rca-807-tube-amplifier.php
... Multigrid tube amplifier circuit - Google Patents; Universal loadline calculator for vacuum tubes; 807 single ended tube amps; 807 (vacuum tube).
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https://all-audio.pro/en/c1/datasheets/rca-807-tube-amplifier.php
... Multigrid tube amplifier circuit - Google Patents; Universal loadline calculator for vacuum tubes; 807 single ended tube amps; 807 (vacuum tube).
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68
Tag: vacuum tube hi-fi - Preservation Sound
http://www.preservationsound.com/tag/vacuum-tube-hi-fi/
The original Williamson hi-fi amplifier schematic as published in “Wireless World” ... It's a push-pull amp, cathode biased 807s, with 6SN7 driver and phase ...
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http://www.preservationsound.com/tag/vacuum-tube-hi-fi/
The original Williamson hi-fi amplifier schematic as published in “Wireless World” ... It's a push-pull amp, cathode biased 807s, with 6SN7 driver and phase ...
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69
807 (Vacuum Tube) | PDF | Electronic Circuits - Scribd
https://www.scribd.com/document/447031851/807-vacuum-tube
frequency power amplifier applications. Contents Audio uses. RF uses. Differences from 6L6 Derivatives Three 807s and an early 6L6, Slang Left, ...
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https://www.scribd.com/document/447031851/807-vacuum-tube
frequency power amplifier applications. Contents Audio uses. RF uses. Differences from 6L6 Derivatives Three 807s and an early 6L6, Slang Left, ...
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70
VTL MB 175 Signature monoblock power amplifier Page 2
https://www.stereophile.com/content/vtl-mb-175-signature-monoblock-power-amplifier-page-2
The power tubes are more unusual: 807s—inexpensive, relatively low-power radio ... parts on a printed circuit board has not degraded his amp's performance.
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https://www.stereophile.com/content/vtl-mb-175-signature-monoblock-power-amplifier-page-2
The power tubes are more unusual: 807s—inexpensive, relatively low-power radio ... parts on a printed circuit board has not degraded his amp's performance.
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71
807 and 1625 Valves Data. - FlashWebHost.com
http://www.flashwebhost.com/circuit/807_and_1625_valves.php
Vacuum Tubes 807 and 1625 are commonly used by hams as power amplifiers. Both tubes are audio power amplifier beam tetrodes in the output stage of high ...
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http://www.flashwebhost.com/circuit/807_and_1625_valves.php
Vacuum Tubes 807 and 1625 are commonly used by hams as power amplifiers. Both tubes are audio power amplifier beam tetrodes in the output stage of high ...
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72
Waamamps 807 Stereo Tube Amplifier based on RH 807 SE ...
https://www.audiocircle.com/index.php?topic=71451.0
This Amplifier features normal input, volume control, power switch, power indicator, speaker terminals (8 Ohms) and circuit protection. You will ...
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https://www.audiocircle.com/index.php?topic=71451.0
This Amplifier features normal input, volume control, power switch, power indicator, speaker terminals (8 Ohms) and circuit protection. You will ...
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73
807 push pull? - The Amp Garage
https://ampgarage.com/forum/viewtopic.php?t=11270
apparently, they're quite well-loved on the audiophile circuit, but i thought it would be a shame to "waste" them for SE operation in triode ...
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https://ampgarage.com/forum/viewtopic.php?t=11270
apparently, they're quite well-loved on the audiophile circuit, but i thought it would be a shame to "waste" them for SE operation in triode ...
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74
Musician's Amplifier - oestex
http://oestex.com/tubes/mus_amp%20.pdf
I. The two chassis comprising the amp ... seen dOzens of diHerent amplifier de signs, and audio enthusiasts are ... ode circuit of the 807 tubes contains a.
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http://oestex.com/tubes/mus_amp%20.pdf
I. The two chassis comprising the amp ... seen dOzens of diHerent amplifier de signs, and audio enthusiasts are ... ode circuit of the 807 tubes contains a.
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75
Results page 574, about '807 se amp'. Searching circuits at ...
http://www.next.gr/search.php?what=807+se+amp&type=1&page=574
The following circuit shows about Power Amplifier Circuit Diagram. This circuit using 2N3055 Transistor.Features: 500ohm current, 50V optimal .
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http://www.next.gr/search.php?what=807+se+amp&type=1&page=574
The following circuit shows about Power Amplifier Circuit Diagram. This circuit using 2N3055 Transistor.Features: 500ohm current, 50V optimal .
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76
STC807.pdf
http://nekhbet.com/STC807.pdf
The circuit of a typical amplifier giving 75 watts output from two type 807 valves in Class 'AB2' push-pull is given on 401 20.
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http://nekhbet.com/STC807.pdf
The circuit of a typical amplifier giving 75 watts output from two type 807 valves in Class 'AB2' push-pull is given on 401 20.
→ Check Latest Keyword Rankings ←
77
Student amplifiers (1959-1963) - MagnatoneAmps.com
https://www.magnatoneamps.com/Student.html
With no significant changes made to the circuit (transformerless "AC/DC" power supply, 3 tubes, 8" cheap speaker), The new 807 cabinet was covered in "rugged ...
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https://www.magnatoneamps.com/Student.html
With no significant changes made to the circuit (transformerless "AC/DC" power supply, 3 tubes, 8" cheap speaker), The new 807 cabinet was covered in "rugged ...
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78
Tube Amp Project: The Nardeaux Steromatic 602 S
https://audioxpress.com/article/Tube-Amp-Project-Steromatic
You can build a tube amplifier that's similar to the original Nardeux Stereomatic 302 S. ... This schematic uses a fixed bias on the 807s.
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https://audioxpress.com/article/Tube-Amp-Project-Steromatic
You can build a tube amplifier that's similar to the original Nardeux Stereomatic 302 S. ... This schematic uses a fixed bias on the 807s.
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79
Homebrew 807 Williamson Amplifier - ADC output trans.
https://www.worthpoint.com/worthopedia/homebrew-807-williamson-amplifier-adc-137053502
Here's an amplifier that I think is probably a homebrew. I believe that it is a Williamson using push-pull 807's and a pair of 6SN7's.
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https://www.worthpoint.com/worthopedia/homebrew-807-williamson-amplifier-adc-137053502
Here's an amplifier that I think is probably a homebrew. I believe that it is a Williamson using push-pull 807's and a pair of 6SN7's.
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80
Vacuum Tubes | Nuts & Volts Magazine
https://www.nutsvolts.com/magazine/article/vacuum-tubes
Along with audio amplifiers, hams have relied on tubes since the 1920s when AM broadcast ... The basic circuit for a triode amplifier is shown in Figure 4.
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https://www.nutsvolts.com/magazine/article/vacuum-tubes
Along with audio amplifiers, hams have relied on tubes since the 1920s when AM broadcast ... The basic circuit for a triode amplifier is shown in Figure 4.
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81
807 generic - OZ Valve Amps
https://www.ozvalveamps.org/807generic.html
The minimal input circuit to the Y plates on the CRT are high-level RF coming from the transmitter, and requires no amplification. The output ...
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https://www.ozvalveamps.org/807generic.html
The minimal input circuit to the Y plates on the CRT are high-level RF coming from the transmitter, and requires no amplification. The output ...
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82
Amp experts! 807 power tubes?. - theFretBoard
https://www.thefretboard.co.uk/discussion/155386/amp-experts-807-power-tubes
The preamp has a 12AX7 for the initial gain stage and a 12AT7 for the bass & treble tone circuit. The power section features a 5U4GB rectifier, ...
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https://www.thefretboard.co.uk/discussion/155386/amp-experts-807-power-tubes
The preamp has a 12AX7 for the initial gain stage and a 12AT7 for the bass & treble tone circuit. The power section features a 5U4GB rectifier, ...
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83
ADS807: 12-Bit, 53MHz Sampling Analog-To-Digital ...
https://www.ti.com/lit/gpn/ads807
Using the OPA2681, this circuit can be operated either with a single or a dual ±5V supply. FIGURE 4. AC-Coupling the Dual-Supply Amplifier OPA642 to the ADS807 ...
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https://www.ti.com/lit/gpn/ads807
Using the OPA2681, this circuit can be operated either with a single or a dual ±5V supply. FIGURE 4. AC-Coupling the Dual-Supply Amplifier OPA642 to the ADS807 ...
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84
Heathkit of the Month #29 - W-4AM ʻWilliamson Typeʼ Hi-Fi ...
https://www.w6ze.org/Heathkit/Heathkit_029_W4AM.pdf
compasses the entire circuit including the out- ... A typical Williamson amplifier circuit consists ... In the original W-1 design the 807 power tubes.
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https://www.w6ze.org/Heathkit/Heathkit_029_W4AM.pdf
compasses the entire circuit including the out- ... A typical Williamson amplifier circuit consists ... In the original W-1 design the 807 power tubes.
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85
Customer reviews: Nobsound FU-7 Tube Amplifier HiFi Class ...
https://www.amazon.com/Nobsound-Amplifier-Class-Single-Ended-Integrated/product-reviews/B01N95QVO1
Find helpful customer reviews and review ratings for Nobsound FU-7 Tube Amplifier HiFi Class A Single-Ended Integrated Amp DIY KIT at Amazon.com.
→ Check Latest Keyword Rankings ←
https://www.amazon.com/Nobsound-Amplifier-Class-Single-Ended-Integrated/product-reviews/B01N95QVO1
Find helpful customer reviews and review ratings for Nobsound FU-7 Tube Amplifier HiFi Class A Single-Ended Integrated Amp DIY KIT at Amazon.com.
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86
Ham Radio Site - AMP INTERFACING - DJ0IP
https://www.dj0ip.de/ricki-leaks/amp-interfacing/
LINEAR AMPLIFIER INTERFACING · You can blow up the keying circuit in the transceiver the first time you try to key the amp. · can burn the relay contacts in the ...
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https://www.dj0ip.de/ricki-leaks/amp-interfacing/
LINEAR AMPLIFIER INTERFACING · You can blow up the keying circuit in the transceiver the first time you try to key the amp. · can burn the relay contacts in the ...
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87
jwn - Positive Feedback
https://positive-feedback.com/Issue58/jwn.htm
And it's not like amps have reverb circuits in them; they have to recover reverb, ... Unlike the 807 cousin, the 6BG6GA uses a standard octal socket, ...
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https://positive-feedback.com/Issue58/jwn.htm
And it's not like amps have reverb circuits in them; they have to recover reverb, ... Unlike the 807 cousin, the 6BG6GA uses a standard octal socket, ...
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88
70 Watt AM Shortwave Transmitter Circuit - Station QRP
https://www.stationqrp.com/data/transmittercircuit2.pdf
Inside the tube rig; CV5152 Crystal Oscillator, 2 x 807 Power Amplifier, PL84 clamp tube to protect the 807s in case of drive failure. Crystal on.
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https://www.stationqrp.com/data/transmittercircuit2.pdf
Inside the tube rig; CV5152 Crystal Oscillator, 2 x 807 Power Amplifier, PL84 clamp tube to protect the 807s in case of drive failure. Crystal on.
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89
Lauren Amp Kit - Weber Speakers
https://www.tedweber.com/lauren-c-kt/
Single ended 807 output tube with a 25 watt OT and big choke. Punch, dynamics, and sustain for days. If you would like this kit assembled for you by one of ...
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https://www.tedweber.com/lauren-c-kt/
Single ended 807 output tube with a 25 watt OT and big choke. Punch, dynamics, and sustain for days. If you would like this kit assembled for you by one of ...
→ Check Latest Keyword Rankings ←
90
20000 watts power amplifier circuit diagrams datasheet ...
https://www.datasheetarchive.com/20000%20watts%20power%20amplifier%20circuit%20diagrams-datasheet.html
› 20000 watts power ...
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https://www.datasheetarchive.com/20000%20watts%20power%20amplifier%20circuit%20diagrams-datasheet.html
› 20000 watts power ...
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91
A 75-Watt Transmitter for 3 Bands - Jlandrigan.com
http://jlandrigan.com/files/75Watt%20807%20triband%20with%20JEL%20end%20link%20coil.pdf
NOTE: The schematic shows no plate parasitic ... If you see any 807 grid current with no drive ... The amplifier is keyed in the cathode circuit.
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http://jlandrigan.com/files/75Watt%20807%20triband%20with%20JEL%20end%20link%20coil.pdf
NOTE: The schematic shows no plate parasitic ... If you see any 807 grid current with no drive ... The amplifier is keyed in the cathode circuit.
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92
807 in the mini torii - Forums - Decware
https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1336011788/8
Once in a while you see custom builders using the tube in push pull or single ended amps. Also like the 6BG6, these tubes can be had quite cheap ...
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https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1336011788/8
Once in a while you see custom builders using the tube in push pull or single ended amps. Also like the 6BG6, these tubes can be had quite cheap ...
→ Check Latest Keyword Rankings ←
93
SET-RH-TTA amplifier | 3D CAD Model Library - GrabCAD
https://grabcad.com/library/set-rh-tta-amplifier-1
Single Ended Triode RH Tube Tester Amplifier, a versatile circuit design by Alex ... I intend to build one for myself, with 807; As before, ...
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https://grabcad.com/library/set-rh-tta-amplifier-1
Single Ended Triode RH Tube Tester Amplifier, a versatile circuit design by Alex ... I intend to build one for myself, with 807; As before, ...
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94
Ultralinear S.E. 6G6G and 807 (unconventional amplifier)
https://www.radiomuseum.org/forum/ultralinear_se_6g6g_and_807_unconventional_amplifier.html
Please find attached the schematic of my DIY Ultralinear S.E. stereo amplifier. The driver is quite unusual since uses old low power audio ...
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https://www.radiomuseum.org/forum/ultralinear_se_6g6g_and_807_unconventional_amplifier.html
Please find attached the schematic of my DIY Ultralinear S.E. stereo amplifier. The driver is quite unusual since uses old low power audio ...
→ Check Latest Keyword Rankings ←
95
audio valves: 807 8018 5b/250a vt-60a, 10e/507 cv124 ats25 ...
https://mullard.org/collections/audio-valves-807-8018-5b-250a-vt-60a-10e-507-cv124-ats25-qv05-25-beam-tetrode
The classic 807 beam tetrode designated as a military valve. ... would be impedance matched to the anode circuit of the RF power valve.
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https://mullard.org/collections/audio-valves-807-8018-5b-250a-vt-60a-10e-507-cv124-ats25-qv05-25-beam-tetrode
The classic 807 beam tetrode designated as a military valve. ... would be impedance matched to the anode circuit of the RF power valve.
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96
Manley 75/150 SE/PP 807 MONOBLOCK Owner's Manual
https://www.manualslib.com/manual/98835/Manley-75-150-Se-Pp-807-Monoblock.html
SWITCHING SINGLE-ENDED 75 / PUSH-PULL 150 This amplifier has a feature exclusive to Manley Labs of being able to choose between two circuit topologies. You are ...
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https://www.manualslib.com/manual/98835/Manley-75-150-Se-Pp-807-Monoblock.html
SWITCHING SINGLE-ENDED 75 / PUSH-PULL 150 This amplifier has a feature exclusive to Manley Labs of being able to choose between two circuit topologies. You are ...
→ Check Latest Keyword Rankings ←
97
Universal loadline calculator for vacuum tubes
https://www.vtadiy.com/loadline-calculators/loadline-calculator/
... loadline and operating point of tube amplifiers' power stages, for most common power vacuum tubes. ... Hi, note that 807 is available since some days.
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https://www.vtadiy.com/loadline-calculators/loadline-calculator/
... loadline and operating point of tube amplifiers' power stages, for most common power vacuum tubes. ... Hi, note that 807 is available since some days.
→ Check Latest Keyword Rankings ←
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