Positive input-negative output charge pump

  
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 - schematic

The zener serves as a dissipative regulator.




Leave Comment

characters left:

New Circuits

.