Dual Polarity Power Supply with LM317/LM337

This is a regulated dual polarity power supply (download schematic and pcb layout HERE):

Dual Polarity Power Supply circuit diagram

The output of this circuit will be positif output(+), normal/ground output(0) and negative output(-). IC LM317 is used to regulate the positive output and LM337 is used to regulate the negative output. You should use TAP transformer for this circuit and heatsink for the IC.

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Comments

suman said…

what would be the rating of the transformer if the load current is about 1 amps.

May 26, 2011 at 9:32 AM

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Power Supply Adapter

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