is nasty crossover distortion. Now, the nfb is taken from the circuit's ou tput terminal, not from the opamp's output, so surely an ideal opamp should correct for the 0.6v Vbe drops. Question is why doesn't it?
owers the output directly from -0.6 to +0.6v
a tr pair, plus 2 nfb resistors. That's it.
the rest of the time.
that's easy, there is no bias network
by people with no testgear or knowledge of how to use it.
on, unless it can be arranged without increasing part count, which seems un likely.
If there's any way I can help it there will be no biasing, no requirement f or thermal tracking, no polyfuse and no anything that isnt essential. Anyth ing and everything will be sacrificed to the god of BOM on this one. I'm ai ming for the 2nd most minimal audio amp here.
My most minimal was just 2 trs, 3 Rs, 2 caps, but class A has limited appli cations. Now I want to go class B for battery use.
I'm aware the problem can be reduced simply by going higher voltage; upping the rails from +-5v to +-15 would reduce it to a third the amount. But I n eed this to be compatible with common speakers, and 15v 0.1A = 150 ohms i sn't.
NT