Friday, November 13, 2015
Orpheum Fuzz
For #FuzzFriday, I give you the Orpheum Fuzz. There seems to be several versions of this circuit (germanium and silicon), but it's essentially a FuzzRite. Since I've already done a FuzzRite layout, I thought I'd do a different one with onboard pots. It's meant for use with silicon transistors, but you could use some NPN germaniums if you want. 100-150 hfe should work nicely for both.
The circuit started working only after installing a 1M resistor between the base and the collector of the second transistor.
ReplyDeleteThanks for catching that. Layout has been updated. Good to go now.
DeleteAs a result, I put the resistor at 2M, to saturate the fuzz. And the second transistor can be replaced by a Germanium (Soviet MP36A Nfe 37, 1 MHz) sound juicy is not so dirty) If you swap it with the first transistor, there will also be an interesting sound)Q1-2N2222a or rus KT3102Г Hfe 643 (more frequencies). Q2-2N2222a,2N3904,bc547, or Ge soviеt МП36А, КТ312В.
DeleteThanks to your site and success.