• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

6e5p & 6c41 tube amplifier

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hello,
I have decided to build an amplifier SE with a 6e5p as driver and a 6c41 (1/2 6c33) as a power tube.
I already have the tube as well as many athers but i need a schematics already tested or reliable that i can build.
Can someone help me?
thank you
 
I've had this up and running for years.
Matt
 

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Apoligys for going off topic....
I use 6e5p as an input/driver on my gm70 amp, has it been ok at that bias/ Va? had a feeling max Va was 150ish, mine run at 180v, they are so cheap i wasn't worried running them at 30v over but if they are ok at 270 i'll be able to get more swing out of them🙂

enzo
 
I build on separate chassis so I use whatever power supply can offer about 400mA easily, those 6S41S are thirsty. I have a few power supplies built around a Signal Transformer DU-1/2 that can supply the necessary current easily, but I do not have any schematics to pass on sorry.


Enzo
You caught me pushing voltages, but the tubes are cheap. I have not had any problems with tube life.
Matt
 
I've had this up and running for years.
Matt

May I ask you why you have chosen 6E5P plate choke circuit instead of plain tetrode or triode connection?

6E5P is HF tube, is it possible plate choke parasitic stray capacitance and leakage inductance may lead to instability and oscillation? Its just my guess, please correct if I'm wrong here.

Thanks.
 
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May I ask you why you have chosen 6E5P plate choke circuit instead of plain tetrode or triode connection?

Plate choke has more gain and more swing voltage.

6E5P is HF tube, is it possible plate choke parasitic stray capacitance and leakage inductance may lead to instability and oscillation? Its just my guess, please correct if I'm wrong here.

These tube (6E5p, E180f, E810f, 6J52p...) work well in triode mode with plate choke. You can use grid stop resistor to G1, G2 (few hundreds to few thoundsands ohms) to prevent oscilation.
 
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