Home Motor drivers Solar engines Sensors Complete robots Misc. circuits Charge pumps Battery chargers Sound generators Remote control RF Tx / Rx Solar cell simulators Op-amp based Nv nets Power switching   The BEAM Circuits Collection is a BEAM Reference Library site.		Charge pump circuits Pump it up! A charge pump uses arrays of capacitors to increase voltage in a circuit.  In this way, you can drive higher voltage loads from logic voltages of 3 - 5 volts. Wilf has posted a number of interesting charge pump designs on the (formerly eGroups, now ) Yahoo BEAM group list: This is a simple, multi-stage design -- all you need is a bicore, 3 volts, and a bunch of 10 uF capacitors...
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