Fred Bartoli wrote:

Eeyore a écrit :
Fred Bartoli wrote:
Eeyore a écrit :
Fred Bartoli wrote:
Eeyore a écrit :
Fred Bartoli wrote:
Winfield Hill a écrit :
Eeyore wrote...
In response to various posts please find attached a mic amp
which has seen volume production in commercial equipment.

Feel free to ask any questions / criticise whatever.

Content-Type: image/jpeg; "mic amp.jpg"
It's nice to see the diff-pair currents going directly to
the output opamp, with it's 6.8k resistors. But why'd ya
steal away loop gain so aggressively by choosing 680-ohms?
The opamp has not enough distorsion to his taste maybe.
IDIOT.
Wasn't expecting anything else than that splendid remark.
If you will insist on saying silly things !
It wasn't silly at all. See my other response below.

Like the other Fred you're all hot air and no substance.

If you want to criticise it you'll need to offer your analysis.

I wasn't criticizing. I certainly wouldn't for people of so much
substance and so dense.

BTW, such an 'analysis' requires at least, maybe half a second,
including time to look at the schematics.

What's amazing is that it wasn't blindingly obvious to You, not even
counting that you still don't understand it.

You might try some appnote at TI. They do have some tutorials about
opamps and feedback and such advanced concepts.

I'm still waiting for your answer.

I read what TI and National had to say on these matters around 30 years ago btw.

So, are you going to elaborate or just continue to post a bunch of whiny crap ?

Graham