Charge Pumps


Charge Pumps are an easy way to get dual power (bi-polar power) supply from a single 9 volt source or to get higher voltages out of 9 volts.  Here are practical applications of the nice little charge pump circuits from the GEOFEX site.  Both PCBs take a typical 9 volt input.  The first one gives three stages of higher voltages from the 9 volt input.  The second one gives bipolar 9 volt output.  That is 9v+, 9v- and ground reference from a single 9 volt source or a single 9 volt battery.  This is great for some of the Craig Anderton projects and any others that use bipolar power supplies.


Higher Voltage Output


Bipolar Power Output


Positive Ground Power (Some PNP Transistors Circuits)

Another good use of the Bipolar charge pump is to deliver positive ground power from a negative ground power input. If you daisy chain power to your pedal board, this will allow you to add your PNP pedals with no special power supplies. Here are some examples of this use.


Buy A Bipolar CP Kit

Buy a Charge Pump (Bipolar) Complete Kit. Includes all the parts and materials you need to build one, including the PCB.


Buy A Bipolar CP PCB

Would you like a Ready to Solder Circuit Board for this project (9volt Bipolar Power Charge Pump)?


Buy A Volatge UP CP PCB

Would you like a Ready to Solder Circuit Board for this project (17, 25 or 33 volt Charge Pump)?