Looking for a fed fet scheme

[Aekidens]

Hi there !

Some time ago I read about a scheme about a fet overdriven by a op. amp. I've looking for it in many sites by failure.

Do you have any idea where I can find it ?

cheers ..

[theman]

Look at the bottom of this page: http://www.diystompboxes.com/pedals/featured.html for "Shaka Express." This is a design with an op-amp front-end (with diodes in the feedback loop) feeding a simple filter network into a JFET gain stage (with more stages to follow).

[Aekidens]

Thanks a lot. 

This scheme has given me ideas.

[Steben]

"Bonzai" circuit looks nice too. Same principle, but with a mini-booster.

[Aekidens]

Where's the bonzai circuit ?

I can't find it