"Raymond Koonce" wrote in message
...
John Byrns wrote:
In article ,
Raymond Koonce wrote:

Hi John,

Not entirely my idea. A friend built an amp using this tube and liked
it. I had several pairs and some appropriate transformers, so I decided
to build something with what I had. About the only thing I didn't have
on hand was the copper chassis. All in all it's a nice amp, but I still
have some issues with the 816s to resolve. I would like to have a small
(2uF or so) cap on the input to the PS, but the 816s don't like it.

I don't follow you, why would you like a 2 uF capacitor on the input to
the PS, is the B+ too low?


Regards,

John Byrns

Yes, I'd like the B+ just a little higher and it's easy to do with a small
cap if you're using a vacuum rectifier. The amp is pretty nice as is
though.


Why not use a different rectifier?. The current consumption of your amp will
be quite modest so many of the ordinary vacuum rectifiers of the period
should work just fine.

David.