I have the parts to build this amp from Steve Bench: http://members.aol.com/sbench/humbal.html
It's shown as a driver, but with an OPT with a cap, ala parafeed, it will be used as a low power amp for a high eff. horn. Below, I've attached what I am thinking about for a power supply. The first current source represents B+ for the output tubes and the second would power the driver stage. I show about 3mv ripple on PSUD for the power side, much less for the driver. I plan to use a 6ck4 in a hybrid bridge for slow start-up. Not shown, because I wanted to keep the drawing simple for now, is that the ps caps are likely to be 450v pieces in series, except for the driver caps. Also not shown is a bias supply. Haven't gotten to that yet, but all suggestions welcomed.
Comments much appreciated. And don't worry about insults. If it looks like I've got something wrong, it's probably because I have.
A couple of questions too: Size/type recommendations for the final caps before the B+ outputs? Also any thoughts on the transformer cap for the output stage?
Sheldon
It's shown as a driver, but with an OPT with a cap, ala parafeed, it will be used as a low power amp for a high eff. horn. Below, I've attached what I am thinking about for a power supply. The first current source represents B+ for the output tubes and the second would power the driver stage. I show about 3mv ripple on PSUD for the power side, much less for the driver. I plan to use a 6ck4 in a hybrid bridge for slow start-up. Not shown, because I wanted to keep the drawing simple for now, is that the ps caps are likely to be 450v pieces in series, except for the driver caps. Also not shown is a bias supply. Haven't gotten to that yet, but all suggestions welcomed.
Comments much appreciated. And don't worry about insults. If it looks like I've got something wrong, it's probably because I have.
A couple of questions too: Size/type recommendations for the final caps before the B+ outputs? Also any thoughts on the transformer cap for the output stage?
Sheldon
