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I've got a general strategy question . . . many vintage amps have limited space and film caps suitable for PS use are fairly large.If you only have room to use one film cap, in which part of the PS filter would you use it? First cap (B+)? Supply to screens? Driver / Phase Inverter? Input section? Negative Bias Supply (if amp is fixed bias)?
I've used film caps in the PS of a couple of rebuilds and, in both cases, used them to supply the B+ on the theory that more current is supplied by that cap than the other, downstream, caps. And the fact that it also affects the following sections of the PS.
But I've seen a suggestion somewhere (forget which forum) that a film cap might make more of a difference when used in the G2 supply and/or the input tubes.
How would you rank the different sections of the PS filter (most important to least important) in regard to the effectiveness of using film caps?
Edits: 11/23/16 11/23/16Follow Ups:
Another strategy is to bypass 'lytics with a good, but smaller capacitor. The quality capacitor "absorbs" most of the errors of the 'lytic.
Always the charging cap which is the first cap is the best place to use a film cap.The screens are the last place I would use one because there is no current draw there to speak of.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Thanks for confirming my thoughts on this Mikey. Hope you're feeling better.
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