In message <[email protected]>,
dated Wed, 31 Oct 2012, "ce-test, qualified testing bv - Gert Gremmen"
<[email protected]> writes:
I do. Output power FETs may have parasitic
oscillations on the edges ....
The one and only analog (analogue) high end power amp I tested did it
at 66 MHz
I very carefully said 'preamps'. Yes, it is necessary to check power
amps. Even 1970s amps with germanium transistors would hoot between 100
kHz and about 500 kHz. But you could easily check, because they would
draw too much current.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
The longer it takes to make a point, the more obtuse it proves to be.
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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