Re: Audio amp for QCX #chat


Alan G4ZFQ
 

So my question is can someone tell me a bit about class D audio amps?
Alan,

Google can help, lots of information like https://en.wikipedia.org/wiki/Class-D_amplifier

73 Alan G4ZFQ

Attached are three screen shots from my oscope there is one that shows no input in fact this is what I get with the input shorted to ground. The other two show the output at a low level and then the output at a moderate level.  At a high level it gets very ugly.  Not sure what I am seeing.  I expected to see something that resembled a sine wave.
The amp works well, doesn't get hot, draws very little c

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