I'vve checked the schematic vs the layout and the only issue that I could find is that 560 ohm resisor that connects to the base of Q1 should be connected to the collector. Not sure it will help since it is only some low pass filtering.
This will beautiful beast, if you use germanium transistors.i used Q1 hfe=50, Q2 hfe=60, Q3 hfe=85! Q3 try silicon with hfe150-650 if you want, you will get differents resaults. Dont forget to change bias resistor 220к from base Q2. I used 100k for norm opening.
Built this with a 2N5088 in Q1 and it doesn't seem like the fuzz knob doesn't do anything. Almost sounds like fuzz is locked at 50% no matter where I turn it.
22uf cap has mislabeled value of 22pf
ReplyDeleteThanks. Fixed.
Deletethanks! susbstitute for BC559b?
ReplyDeleteI bet 2N3906, 2N5087 or 2N4403 would work.
ReplyDeletedoes not work here
ReplyDeleteI'll take a look tonight.
DeleteWhich transistor for Q1 do you have in there? If you are using a 2Nxxxx transistor it should be flipped 180 degrees.
I'vve checked the schematic vs the layout and the only issue that I could find is that 560 ohm resisor that connects to the base of Q1 should be connected to the collector. Not sure it will help since it is only some low pass filtering.
DeleteI believe I got this verified. Had to move the 820K resistor from E of Q1 to B of Q1. Also used a 2N3906 in Q1 rotated 180 degrees.
ReplyDeletePerfect! Tagged.
DeleteThis will beautiful beast, if you use germanium transistors.i used Q1 hfe=50, Q2 hfe=60, Q3 hfe=85! Q3 try silicon with hfe150-650 if you want, you will get differents resaults. Dont forget to change bias resistor 220к from base Q2. I used 100k for norm opening.
ReplyDeleteBuilt this with a 2N5088 in Q1 and it doesn't seem like the fuzz knob doesn't do anything. Almost sounds like fuzz is locked at 50% no matter where I turn it.
ReplyDeleteA BC559 is a PNP transistor and a 2N5088 is NPN - you need a PNP - try 2N3906, 2N5087, 2N2907 etc
Delete