CHARGE PUMP VOLTAGE UP RTS PCB

The ready-to-solder PCB for the 9V Charge Pump: feed it a single 9V supply and get a higher DC voltage out for circuits that need more headroom.

About this PCB

A charge pump is an easy way to get higher voltages (or dual power) from the one 9V supply already on your pedalboard, with no extra transformer. This board is the voltage-up version, a three-stage booster based on the GEOFEX design: with 9V in, it outputs about 17, 25 or 33 volts depending on how many stages you populate. That extra voltage gives op-amp and other circuits rated for it more headroom before they clip.

The same project page also covers a separate bipolar charge pump board (+9V, -9V and ground), handy for Craig Anderton-style projects and for running PNP fuzzes and boosters from a negative-ground supply. That is a different PCB from this one.

Specs

• Input: 9V DC
• Output: about 17V, 25V or 33V
• PCB size: 3.0cm x 3.0cm
• Solder mask, plated-through holes and silkscreened part placement

Build resources

• Complete instructions for this PCB (Charge Pumps project page)
• 17/25/33V charge pump schematic
• 17/25/33V charge pump parts layout