5v 12v regulated pcb Dual 15v power supply schematic with pcb, +15v -15v 1a Supply power dual 12v circuit diagram dc 15v using unregulated main
5V & 12V Regulated Power Supply - Electronics-Lab.com
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Many simple 6v power supply circuit
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Dual Supply circuit diagram
12V & 5V Dual power supply Circuit - Gadgetronicx
Dual 15V Power Supply Schematic With PCB, +15V -15V 1A - ElecCircuit
5V & 12V Regulated Power Supply - Electronics-Lab.com