Circuit - Swith Mode Power Supplies Converters Circuits / Schematic List - Circuits designed by David A. Johnson, P.E.

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Switch Mode Power Supply Circuits

Circuits designed by David Johnson, P.E.
Last Updated on: Wednesday, April 28, 2010 03:53 PM

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Dave's Circuits: Frequency to Voltage Period to Voltage Sine to Square Wave Voltage Converters
Voltage to Frequency DC to DC Power Supplies High Voltage Power Supplies
Switchmode Power Supplies Voltage Controlled Oscillators

0.5V Negative Supply
Although not very efficient, this simple circuit, consisting of two LEDs and a photo diode, generates a negative voltage with a current level of a couple milliamps. It is ideal for supplying a negative rail to low power “rail to rail” op amp circuits, which need to have a true zero volts output.

CHARGE PUMP EFFICIENTLY DIVIDES SUPPLY VOLTAGE
This circuit uses a few FETs and logic devices to down convert a DC voltage to about one half its value

More Power Supply Circuits
More Converter Circuits

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