Blooze
Well-known member
Populated the board and have it air wired to my prototyping pcb and transistors are all full lead length yet. Have the diode socketed and the zener alligator clip wired to try different ones. Lots of wire hanging everywhere, so that may be the problem. Using the following transistors with voltages:
Q1: 2N2222. HFe= 175: E 26.6mv,B 0.626V, C 4.38V
Q2: BC109C hFe = 510: E 42.3mv, B 0.641V, C 4.08V
Q3: MP38A hFe=64, leakage 140uA, E 0V, B 126mV, C 2.57V
D9J diode with 5.1V zener
I didn’t have any germs that are zero leakage and the 2N2222 is the lowest hFe silicon I have. I also only have the cheap gm328 tester.
If I have the effect volume and fuzz maxed and my guitar volume dimed I’m ok with any setting on the pedal. Whenever I roll the guitar volume back even a little it’s motorboat oscillation city unless I adjust the tone to the last third of the rotation and remove all bass. I can roll the fuzz back to 2/3 max and stop some of it as well which I expected. Even with the fuzz rolled back to 2/3 max or so I have to roll the tone to about 1/2 way to get it to stop. Lots of different combos.
Maybe this is just how a tone bender works as I’ve never played one, but any suggestions on what to explore I’d appreciate.
Hope this link works. This is me just moving the guitar volume knob.
Oscillation audio
Q1: 2N2222. HFe= 175: E 26.6mv,B 0.626V, C 4.38V
Q2: BC109C hFe = 510: E 42.3mv, B 0.641V, C 4.08V
Q3: MP38A hFe=64, leakage 140uA, E 0V, B 126mV, C 2.57V
D9J diode with 5.1V zener
I didn’t have any germs that are zero leakage and the 2N2222 is the lowest hFe silicon I have. I also only have the cheap gm328 tester.
If I have the effect volume and fuzz maxed and my guitar volume dimed I’m ok with any setting on the pedal. Whenever I roll the guitar volume back even a little it’s motorboat oscillation city unless I adjust the tone to the last third of the rotation and remove all bass. I can roll the fuzz back to 2/3 max and stop some of it as well which I expected. Even with the fuzz rolled back to 2/3 max or so I have to roll the tone to about 1/2 way to get it to stop. Lots of different combos.
Maybe this is just how a tone bender works as I’ve never played one, but any suggestions on what to explore I’d appreciate.
Hope this link works. This is me just moving the guitar volume knob.
Oscillation audio
Last edited:
