F6 Amplifier

[Antoinel]

Originally Posted by Zen Mod

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.

[Loudthud]

Originally Posted by Zen Mod

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.

[Antoinel]

my Papa [who is it] is smarter than your Nelson [who is it]!

[Zen Mod]

Originally Posted by Loudthud

The overall phase in non-inverting.

you're right .........

[Michael Rothacher]

Originally Posted by Nelson Pass

The only mystery is how the circuit
worked so well that way...

I have a theory on that.

[buzzforb]

Will this blow up?

[Zen Mod]

Originally Posted by Zen Mod

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

Originally Posted by Skorpio

Are you mistake in this drawing intentional?

Originally Posted by Loudthud

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

[Zen Mod]

Originally Posted by buzzforb

Will this blow up?

most probably not

but biasing must be adjustable , to achieve proper 0 on output

[buzzforb]

Originally Posted by Zen Mod

most probably not

but biasing must be adjustable , to achieve proper 0 on output

Forgot about bias pot for upper fet.

[Antoinel]

Originally Posted by Zen Mod

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.