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More  DC to DC ower Supplies

 

Battery Powered Plus-Minus 15v Supply  --    Aug 31, 2008
designed by David A. Johnson, P.E

Many classic operational Amplifier circuits call for a split positive and negative 15 volt supply.  The circuit below makes the job of generating such a supply much easier by using an off-the-shelf DC to DC converter, powered from a cheap 6v battery made from four AA cells.
The converter, part number VESD1-S5-D15-SIP, is available from Digikey, their catalog number 102-1410, for about $6.00.  To insure clean voltages, I follow the output of the converter with two voltage regulators, also available from Digikey.  The result is a very nice supply rated at 30ma from each supply voltage.  This should be plenty of current for most circuits.

Click on Drawing Below to view PDF version of Schematic

schematic Battery Powered Plus-Minus 15v Supply



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