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RE: ALT. 1.

" "Assuming reasonably linear tubes, the current draw of a push pull Class A output stage will not change by very much at all."

This comment always bothered me. Chris covered it when he included the "over a period of time" but when we look at the actual current through the output the picture is quite different."

That statement you quoted was for a push-pull class A amplifier. I think the plot that you displayed is for single-ended, right? The current as a function of time looks just right for single ended; fluctuating roughly equally up and down around the quiescent level.

For push-pull class A, the total current should be very nearly constant, since it should be like the sum of the plot you showed plus an inverted version of that plot.

Chris


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  • RE: ALT. 1. - cpotl 11:22:26 01/09/15 (0)

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