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-   -   ZEN v4 -> follower (http://www.diyaudio.com/forums/pass-labs/35910-zen-v4-follower.html)

Stefano 12th June 2004 08:10 AM

ZEN v4 -> follower
 
Is there anyone that have build a follower version of zen4? What have i to modify to make it from the original? I want to use the bride of son of zen i'm building as a vas to drive it. Anyone interested?

Stefano 12th June 2004 08:42 AM

As i can recall to aleph 0 was configured as a voltage gain stage plus a source follower but i'm not sure how to extrapolate the aleph corrnt source

Stefano 12th June 2004 12:18 PM

Hey?
 
Hey, anyone?

Nelson Pass 13th June 2004 03:19 AM

Re: ZEN v4 -> follower
 
Quote:

Originally posted by Stefano
Is there anyone that have build a follower version of zen4? What have i to modify to make it from the original
I'm not clear - Did you want to configure Z4 as a follower? If
so, there are already some nice Source follower circuits out
there. Z4 is not set up as a follower.

On the other hand, Z4 has an input follower in the form of the
P channel Mosfet. This dramatically raises the input impedance
of the amp for those with girly-man preamps unable to drive
600 ohms.

BSOZ is perfectly happy driving either situation. If you want to
use it as the voltage gain stage, consider two followers in
balanced input and output, and you'll get twice as much swing.

:cool:

Stefano 14th June 2004 03:01 PM

Tank you
 
Tank you very much for your reply Nelson, what i'm looking for is a power follower single-ended with an aleph corrent source

Fuling 14th June 2004 03:06 PM

Quote:

what i'm looking for is a power follower single-ended with an aleph corrent source
Maybe a White follower would qualify instead?
Originally a tube circuit but Ive seen at least one SS version too.

Nelson Pass 14th June 2004 07:05 PM

Re: Tank you
 
Quote:

Originally posted by Stefano
Tank you very much for your reply Nelson, what i'm looking for is a power follower single-ended with an aleph corrent source
Easy enough to do. Just use the N channel current source
from the positive supply like the rest of the Alephs, and
use it to bias a P channel Mosfet whose Source goes to
the current source and the output, and whose Drain goes to the
negative supply. Drive the Gate of the P channel, and voila!

Stefano 14th June 2004 07:29 PM

Grazie
 
I'll take a try, mille grazie Nelson!


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