Suggested line level stage.

[Workhorse]

Its very good to see the posts back in this thread, Graham thanks very much, its your humble effort...

Thanks, Hugh for this kind act....

Its a surprise to see the miracles of nature..and again its amazing that we have just Rediscovered Carlos once again......

Carlos could we have some more of your younger fotos too....just for refreshing the environment a bit more.....




Truly Unbelievable thats Carlos isn't it!

regards,
Kanwar

[AndrewT]

Am I in the right thread for the technical bits?
There is a heck of non topic in here hiding much of any use.

[lineup]

Originally posted by AndrewT
Am I in the right thread for the technical bits?
There is a heck of non topic in here hiding much of any use.

I agree a bit with you AndrewT
But then again it is Graham's Topic ( with an interesting amp, as usual! )
As long Topic Starter does not mind and people are not disrespectful
there should not be problems.

I wouldn't have wanted to miss that 'copy of carlos man'. It is remarkable.
But remember, it is the INSIDE that counts.
And even if that man may be nice it is no way he can replace Carlos, for real.
Nobody Can

Regards
lineup

[Graham Maynard]

Hi Andrew,

Yes - right place - real people.

Just did a sim to check currents, etc.
Input transistors - 700uA
Output transistors - 53mA
Source mirrors - 3.3mA

Vbe for input transistor ~ 0.65V (for upper half the emitter is -ve)
voltage across 470 resistors ~ 1.2V ( +ve wrt emitter )
thus output bias (22R) ~ 1.1V ~ 53mA (total both halves)

[AndrewT]

Hi Graham,
now I begin to see.
The main input bias passes through the 22r.
The bias controllers are trimming the voltage on the first input Qs to adjust the output bias to the desired result. Confusion gone.

Thanks.