Tube DIY Asylum

RE: Choke input for Class A push pull

64.12.116.16

In Reply to: RE: Choke input for Class A push pull posted by Perseo on June 06, 2009 at 14:22:42

hey-Hey!!!,
There are a few reasons I like the LC filter. Very gentle on the rectifiers, as the current delivery is *MUCH* more constant v. the cap input. Less variation in current delivery means less variability in current delivery to the primary side, and for DH tubes I think that is quite important.

Now, for a Class A, PP design will have some current variation. It is happening at twice the fundamental's frequency and is dependant on the linearity of the final's. If they've got mostly 2HD, we'll have very little variation, and for one with lots of 3 HD, we'll have lots of it.

So...what does that leave the PS having to cover? and what does that have to do with how an amp will sound? I think that a 'perfect' PS is *NOT* what the SE folks are after; the PS performance seems to have much to do with the desired colourations...so there it is...more questions, eh?
cheers,
Douglas

Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

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