LED in positive ground pedal with voltage inverter

Peors62

New member
I have a fuzz where I used a pnp germanium and built a voltage inverter so that I can use it with a normal power supply.
I’ve never gotten around to adding a led, but now that it’s time I’m not sure how to do it.

Should I connect the anode to the lug of the 3pdt (where the cathode goes on +9v pedals) while cathode goes to the -9v power rail going into the voltage inverter?
OR should I wire it like I normally would with anode directly to +9v on dc (avoiding the -9v power rail in pedal(???)) and cathode to 3pdt, or would that not work since the 3pdts ground is positive.
Stupid question ik but I’m really confused…
 
If you're using a voltage inverter the 3PDT ground isn't positive.

The voltage inverter generates a negative voltage to supply your circuit, as a result, ground (which is still 0V) is "more positive" than the negative supply your circuit is running on.

You can wire it either way, but I would do it the old fashioned way (DC jack > CLR > LED) rather than power the LED from the inverted voltage source.

Short version: Wire it like you normally would.
 
I don't think it would matter other than if you had to come back and make changes to the circuit later on and couldn't remember exactly what you did - having the LED wired direct to the incoming power source would be simpler to figure out
 
Thank you both!! Seems to work fine, did a rough test and I’m gonna finish it frfr tonight I think! Also accidentally wrote fuzz instead of treble booster, well well, either way I’m quite happy with it! Sounds killer
 

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