Happy Fuzz Friday, everyone! Last fuzz of 2019. Here's an interesting fuzz circuit from Way Huge based on the Tone Bender Mk. III. It uses PNP silicon transistors, but is a negative ground effect. Schematic available here.
The MJE210 is a pretty low gain transistor. The max hfe is 180 according to the datasheet. So any PNP with low hfe should be fine, just mind the pinout. Might be fun to throw a germanium there.
hey again, i used a BD176 as the substitute of MJE210 because it has the same pinout and max hfe values are pretty close. i adjusted the fuzz pot with a 10k and it worked pretty well. also it's much more easier to find BD176 around. it's a little bit more gated than i thought. it would be cooler with an additional jfet buffer to the input. call this verified.
Tested with GT403, since the original transistor is not available, tested many germanium transistors, this one will do best, a lot depends on hfe, at some values at maximum settings there is a squeak.
What is cool to use MJ210 there??
ReplyDeleteThe MJE210 is a pretty low gain transistor. The max hfe is 180 according to the datasheet. So any PNP with low hfe should be fine, just mind the pinout. Might be fun to throw a germanium there.
DeleteThanks, David. May be germanium will go.
DeleteHas anyone already checked that it works perfectly? I would appreciate it
ReplyDeletei need an alternative for the mje210. it's impossible to find it in my country. anoyne?
ReplyDeleteWonderful! Did you work out what all the ICs do on the other board of the Way Huge?
ReplyDeletehey again, i used a BD176 as the substitute of MJE210 because it has the same pinout and max hfe values are pretty close. i adjusted the fuzz pot with a 10k and it worked pretty well. also it's much more easier to find BD176 around. it's a little bit more gated than i thought. it would be cooler with an additional jfet buffer to the input. call this verified.
ReplyDeleteThanks for verifying and the build notes!
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ReplyDeleteThe best sounding fuzz I ever heard so far. I used soviet germanium transistors as Q3:
ReplyDeleteГТ403Б hfe=230: great
ГТ308В hfe=64: bad, for some reason there is a kind of feedback noise with this one
Tested with GT403, since the original transistor is not available, tested many germanium transistors, this one will do best, a lot depends on hfe, at some values at maximum settings there is a squeak.
ReplyDelete