I was going to make a board out of a schematic I did in eagle time ago. I was going to check the values but I didn´t remember where I take the original schem :-[
The schematic i did is attached. Its a common tube amp to jfet pedal emulator. The only think I know is I named it Fender champ.
Thanks in advance ;)
Bumping with a pleaaaase
(http://img690.imageshack.us/img690/928/c0fy.jpg)
It looks like some sort of triode-to-JFET amp schematic conversion. I did a Valve Jr version that's similar.
But I have some doubts on some of those values in your schematic. R1 and R3 are really 1M? I kinda doubt it.
Also, I don't know if a 5K trimmer has enough range to bias any JFET you throw in there. I would say 25K or 50K would be better.
As I said i was going to check the values because I often copy paste components to do it faster and forgot to change some values but R1 if for sure 1M. I always start with the in to the out making schematics in eagle. Not 100% sure about R3
thanks for the reply btw
I've never seen an input resistor value that high. Usually it's less than 100K. But I'm okay with being wrong. ;D
Yay! I´ve found it! It is Barry´s MyTon Blonde