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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Monday, March 26, 2012 01:32 PM
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DC to DC ower Supplies
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Battery
Powered Plus-Minus 15v Supply --
Aug 31, 2008
designed by David A. Johnson, P.E |
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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. |
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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. |
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Click on Drawing Below to view PDF version of Schematic |
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