12V Dual Power Supply

12V Dual Power Supply

The circuit specified here is of a regulated dual power supply that provides a positive voltage of +12V and a negative voltage  of—12V . The stipulated power supply given in this manner is an effective tool on the work bench of an electronic rhapsodist.The transformer TI steps down the AC mains voltage substantially and the diodes D1, D2, D3 and D4 perform the task of rectification. Both lCs 7812 and 7912 assist in voltage regulation, in which the former is a positive 12V regulator and the latter is a negative 12V regulator. The yielded output of IC 7812 will be +12V and that of IC 7912 will be —12V


Input Voltage : 15V to 24V AC
Output Voltage: +/-12V DC


Parts List



Download: Gerber

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