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RE: Input and driver stage supply, not output supply

Correct Lew,

The modern supply is for the finals stage. It has too much ripple for a front end stage of a conventional triode design.

Aspects of a modern supply could possibly apply to the front end, but it is too early in my experimenting with it, to know and work this out.

In a two stage DC amp Lew, where the output stage is "floated" say 185-190 VDC above the first stage, we get to beneficially use a "R-Dropper", which, with a 47 uF cap after it (R1 / C3), has maybe only one millivolt of ripple to the front end. The front end supply is also shunt regulated for B+ stability.

Jeff



Edits: 08/23/12

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  • RE: Input and driver stage supply, not output supply - drlowmu 20:43:33 08/23/12 (0)

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