[sdiy] MFOS quantizer

[Louis van Dompselaar]

I completed the PCB but hadn't tested it as yet.  But just to try,
I powered the otherwise unconnected board with 15V just now.  It doesn't
run hot at all.  Chips running hot are usually a sign of power
reversal, so either you have -15V and 15V reversed (or swapped with GND),
or the TL074s are the wrong way around.  Assuming you're using Ray's
PCB, little else can cause them to glow...

Louis


> I just built 2 MFOS quantizers at the same time and they both do not 
> work. When I plug them in the TL074 IC gets hot. It's the same on both. 
> I feel like since they are both malfunctioning in the same way I should 
> be able to figure out what is wrong, but I just can't find anything.
> There are no shorts on the board and I'm using the exact specified ICs 
> (not low voltage ones). I'm powering the board with 15volts (instead of 
> Ray's standard 12volts), but according to the schematics, that shouldn't 
> be a problem. I'm using 1N4148 diodes instead of 1N914 but I can't 
> imagine why that would make any difference.
> Have other people had problems with this circuit??