Re: Wampler jfet sorter

Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/Wampler-jfet-sorter-tp33533p37517.html

Corrected my last reply: Referring to the original layout on the main site, Q6 is not biased with a drain resistor, that drain is connected directly to the filtered source voltage.

So you need Q2,Q3,Q4 and Q5 biased with the two 22k resistors. Q2 & Q3 are in parallel and share a single 22k drain resistor. And Q4 & Q5 share their own drain resistor.

Q1 is biased with a 16k resistor.

I'm not sure what effect having the jfets in parallel has regarding the drain resistors, meaning will a single jfet properly biased with a 22k also bias correctly when used in parallel with another (22k biased) jfet?

Haven't checked that out yet, let me know if you do.