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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
 Last Updated on: Monday, August 18, 2008 04:19 PM


DC to DC / Switch Mode and DC to DC Converters   Voltage Converters
 
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.
 

Click on Drawing Below to view PDF version of Schematic

Circuit 0.5V Negative Supply designed by David Johnson, P.E. (May 20, 2005)

DC to DC / Switch Mode and DC to DC Converters   Voltage Converters

Master Schematic Category List - David A. Johnson, P.E.
 

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