Push Pull Amp circuits-MOSFETs

[Keith Hilton]

Is there a good internet site for small audio Push Pull amp circuits using MOSFETs? Also interested in biasing diagrams of E-MOSFETS and D-MOSFETS for small audio amp circuits? Also interested in JFETs in small audio circuits? Thanks!

[Gino Iorfida]

Keith,
Try here: http://www.discovercircuits.com/A/a-audioamp.htm to start...

Here next.... http://www.diyaudio.com/links/index.php?PHPSESSID=&PID=9

This looks extra interesting.. http://users.swing.be/edwinpaij/ampli_mosfet.htm

[Keith Hilton]

Gino, those are good web sites--Thanks!
Trying to look at examples of low power operation of class AB amplifier, using push pull. There are pleanty of transistor and tube push pull examples, but few using JFETs and MOSFETs. The JFETs and MOSFETs examples you do see are in really powerful amps and I'm looking for low power examples. The cross over is where you get the noise when operating two class B amps as an AB class amp. This means to avoid distortion the positive half of the signal must be biased a little past the half way point, and the same goes for the negative half of the signal. Instead of re-inventing the wheel I thought there might be some bias examples for low power audio amps. Have not found what I am looking for yet.

[David L. Donald]

Keith I will send your e-mail to a audiophile designer friend. He might have some good ideas, though he is very busy.
I pasted the above, with some of my thoughts also. Sandy is one smart cookie so I expect some good feedback.<FONT SIZE=1 COLOR="#8e236b"><p align=CENTER>[This message was edited by David L. Donald on 25 March 2003 at 05:59 AM.]</p></FONT>