a JLH variation

[Stee]

introducing a Push Pull BJT on driver

 

[PhaseLockLoopy]

Hi

i have seen it before -- built it - -- as with usual JLH it's ok
Tried it asa headphone amp for a while

 

[Stee]

input bipolar

is a little NPN (C2240) to have inverted output

 

[PhaseLockLoopy]

Here's where I had seen it

The Class-A Amplifier Site - JLH Class-A Update

other variants are there also

 

[Melon Head]

That link does not look like what stee has posted.
For one have a look at the feed back of Stee's version. It goes to the base of the transistor.
The second difference I see, is Stee has an extra driver transistor, where the JLH only has one driver transistor.

 

[PhaseLockLoopy]

I never said it was exact - It's the same basic concept - the other big difference I note is that there are no chinese characters in the link I put up

 

[Melon Head]

 

[godfrey]

Something's wrong here - that second circuit looks like it might actually work. Nah, Stee wouldn't do that, I must just be tired.