Charge pump / voltage inverter wiring.

Started by Buzz, June 08, 2013, 09:46:57 PM

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Buzz

Hi everyone. A while ago I built Arons' Hornet and got bitten by the Germanium bug. I'm now on an obsessive Fuzz quest. With the Hornet I just used a battery so it was simply a case of flipping the wires and using the +9v as ground.

But with the pedals I'm building now I want the option of daisy chaining the power with other effects as well as battery power, so I'm adding charge pumps as voltage inverters to achieve this. I'm using TC1044 chips.

I've drawn up the wiring how I think it should go..... Is this right?

( I've omitted all the signal wiring to keep it simple... the 3PDT is wired up the standard JD Sleep way )

I am the Nightrider. I'm a fuel injected stompbox machine. I am the rocker, I am the roller, I am the MIDI-controller!

Buzz

So I guess my question is,

Can +9v and -9v share a common ground, so long as that ground is 0v?

I am the Nightrider. I'm a fuel injected stompbox machine. I am the rocker, I am the roller, I am the MIDI-controller!

PRR

Yes.

But run the Charge Pump ground *direct* to the power jack.
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Buzz

#3
Thanks Paul.

I've updated the wiring,

I have removed the input ground to power jack wire.

Added charge pump to power jack ground wire.

Moved 3PDT ground from charge pump to the effect board.

Should I have left in the input to power jack ground?

I am the Nightrider. I'm a fuel injected stompbox machine. I am the rocker, I am the roller, I am the MIDI-controller!