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Dual voltage power supply 12 volts

2014-11-26 04:02  
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This circuit is a dual voltage regulated power supply, +12, -12, 0 volt. It uses the 7812 and 7912 regulators. You need a 18VCT, 1A transformer at input. visit page.Dual voltage power supply 12 volts - schematic
Caution: Input / Ground are reversed between the 7812 and 7912. visit page.