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Old 26th July 2012, 08:15 PM   #311
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Quote:
Originally Posted by Zen Mod View Post
whatever

we can now proceed to test Um variation of said circuit



David Copperfield is little kid , comparing to Papa
Preferably by simulation. Fet cost is steep.
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Old 26th July 2012, 08:18 PM   #312
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Quote:
Originally Posted by Zen Mod View Post
blahblahblah

so now , after Papa merciful waiting to bring us proper schm ( Oh , I didn't saw that mistake ) , let's make short - this time proper - analysis :

besides biasing , simple Greedy Boy can freely expect few more tricks ......

maybe yes ........ maybe not

The overall phase in non-inverting.
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Old 26th July 2012, 08:25 PM   #313
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my Papa [who is it] is smarter than your Nelson [who is it]!
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Old 26th July 2012, 08:28 PM   #314
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally Posted by Loudthud View Post
The overall phase in non-inverting.


you're right .........
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Old 26th July 2012, 08:30 PM   #315
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Originally Posted by Nelson Pass View Post
The only mystery is how the circuit
worked so well that way...
I have a theory on that.
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Old 26th July 2012, 08:35 PM   #316
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Will this blow up?
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Old 26th July 2012, 08:36 PM   #317
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally Posted by Zen Mod View Post
blahblahblah

so now , after Papa merciful waiting to bring us proper schm ( Oh , I didn't saw that mistake ) , let's make short - this time proper - analysis :

besides biasing , simple Greedy Boy can freely expect few more tricks ......

maybe yes ........ maybe not

Quote:
Originally Posted by Skorpio View Post
Are you mistake in this drawing intentional?
Quote:
Originally Posted by Loudthud View Post
The overall phase in non-inverting.
moi again ....... I flipped unflippable so many times , so my flipping brain was flipped again

to repeat proper one - just for the record

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Old 26th July 2012, 08:38 PM   #318
Zen Mod is offline Zen Mod  Serbia
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Originally Posted by buzzforb View Post
Will this blow up?
most probably not

but biasing must be adjustable , to achieve proper 0 on output
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Old 26th July 2012, 08:39 PM   #319
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Quote:
Originally Posted by Zen Mod View Post
most probably not

but biasing must be adjustable , to achieve proper 0 on output
Forgot about bias pot for upper fet.
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Old 26th July 2012, 08:56 PM   #320
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Quote:
Originally Posted by Zen Mod View Post
moi again ....... I flipped unflippable so many times , so my flipping brain was flipped again

to repeat proper one - just for the record

It follows that:
  • The output FETs are/must be highly matched [within the grasp of the DIYer].
  • Circuit operation appears to be highly symmetric. When the upper FET is relatively on, the lower one is relatively off. When the upper FET is relatively off, the lower one is relatively on. The 2 ON states are made equal, and the 2 OFF states are made equal too. This is symmetry. Correct asymmetry with loop feedback.
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