This is circuit Isolated dual power supply OR DC to DC Converter Circuit. Input Voltage 5V,Output Voltage +12V and -12V.
Detail:
diode should be fast recovery type, for less than 100mA use 1N4148. transformer, pri-20-20, sec-60-60, a SWG-AWG to suit the current you design for.
Any fast switching transistor would work, no regulation, use regulators like 78L12 if you want, circuit like multivibrator used for flashing LED lights.
Dell GX620 Power supply
Source:http://www.electronics-circuits.com/schematics/arc20050724.html
Thank you.
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This entry was posted on Friday, September 14th, 2007 at 11:03 pm and is filed under dc converter, switching power supply.
