Hi all,
I’m currently trying to build the ruby guitar amp of which the schematic is provided by Electrosmash (attached). My first attempt failed (no sound at all). So I thought it would be a good idea to break up the building proces into smaller steps, checking each step on functionality. And in doing so I already got stuck at the first part; the input to the MPF102.
My idea was to build this input part of the amp as pictured below, but instead of connecting the source of the transistor to pin 2 of the IC, I connected it to an LED circuit that, through a 1k resistor goes to ground.
my expectation was that the output of my guitar would trigger the gate of the transistor and that in turn would lead to the LED flickering.
However, the LED is just always on. Does that mean (i) the transistor is defective, (ii) my (test) design is faulty, or (iii) both
?
Any help would be really appreciated!
Kind regards, Bart
I’m currently trying to build the ruby guitar amp of which the schematic is provided by Electrosmash (attached). My first attempt failed (no sound at all). So I thought it would be a good idea to break up the building proces into smaller steps, checking each step on functionality. And in doing so I already got stuck at the first part; the input to the MPF102.
My idea was to build this input part of the amp as pictured below, but instead of connecting the source of the transistor to pin 2 of the IC, I connected it to an LED circuit that, through a 1k resistor goes to ground.
my expectation was that the output of my guitar would trigger the gate of the transistor and that in turn would lead to the LED flickering.
However, the LED is just always on. Does that mean (i) the transistor is defective, (ii) my (test) design is faulty, or (iii) both
?Any help would be really appreciated!
Kind regards, Bart
