6BG6GA adapter instructions needed

[Original Burnedfingers]

I put the instructions for making the 6BG6GA adapters away for safe keeping and now I cannot remember where Must be a senior moment

Anyone got a spare copy?

[DigitalJunkie]

Maybe:
http://www.vacuumtubes.com/6BG6.html

[Original Burnedfingers]

That doesn't help ....no info

[pchw]

Use the forum to PM me your email addy, I will scan my copy for you.

[Original Burnedfingers]

Thanks Fred

[Original Burnedfingers]

I would like to wire in 6BG6GA's permanent in a stereo 70 I have.

Would it be permissible to use the pin #6 a a tie point to wire in the high voltage plate wire?

[SY]

It should be. Usually, if a pin shouldn't be used, the base chart will say something like "IC" (internal connection) rather than "NC" (no connection). Now, since that pin is right next to the grid pin, you should take some precaution to avoid arcs.

[Original Burnedfingers]

Now, since that pin is right next to the grid pin, you should take some precaution to avoid arcs.

Then I shouldn't use it for fear of arcs?

[SY]

Depends. If you make sure that the pins are bent back away from one another, avoid points, and insulate with heat shrink (all easy measures), you'll be fine. This isn't kilovolts, it's about 500V. If you have any qualms, then use a terminal strip.

[Bandersnatch]

Originally posted by SY
Depends. If you make sure that the pins are bent back away from one another, avoid points, and insulate with heat shrink (all easy measures), you'll be fine. This isn't kilovolts, it's about 500V. If you have any qualms, then use a terminal strip.

hey SY,
I'd say it is a bit more than 500V. The plate will have signal AC on it. So B+ plus positive plate swing. IIRC my back-ov-the-envelope calculations for a St.70 that is around 350V or so at full power. 800 V is a peak, and to that we'd add bias and the negative g1 voltage applied by signal. Probably another 100V or so...so we are indeed near 1 kV...heh-heh-heh
cheers,
Douglas