• 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.

An Amp oddity

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A triode/pentode tube. Like ECL82. Pin 6 is pentode plate and pin 9 is triode plate.

I'll look into the possibility of the ECL82, previously I didn't think it was this but i am getting 288 volts on pin 9 of the socket and 345 volts on pin 6 (both readings taken without valve).

Do these sound realistic for an ECL82?

The input signal from the pot is on pin 1.

Thanks again
 
After a good look, it's definitely a circuit for a E(P)CL86.
If pin 1 and 2 are connected in that tube then it is not the one for that thing.
Could be a 6BW6.
Mona

The PCB circuit is for an E(P)CL86 or 6BW6? 🙂

and...

The valve supplied is not for this circuit / PCB?


This could be great news! I did not expect to find out the answers so fast... and if so, I feel really glad to have joined the forums... many thanks!
 
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