Positive input-negative output charge pump

Posted on Oct 22, 2012

A simple means of generating a low-power voltage supply of opposite polarity from the main supply. Self oscillating driver produces pulses at a repetition frequency of 100 kHz. When the VMOS device is off, capacitor C is charged to the positive supply. When the VMOS transistor switches on, C delivers a negative voltage through the series diode to the output

Positive input-negative output charge pump
Click here to download the full size of the above Circuit.

The zener serves as a dissipative regulator.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Video DVM circuit
    Wireless Lan for AVR microcontrollers
    Loop Antenna For 3.5 Mhz
    motion detector sensor circuit
    Whats the purpose of the diodes in this circuit
    Telephone amplifiers
    Geerts clock
    CMOS interface circuit and the switching amplifier
    Based LT3756 buck - boost mode drive circuit diagram