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Home Projects Power +/-12V Dual Power Supply

 
 

+/-12V Dual Power Supply
author: Rajkumar Sharma


This project is a solution to power up most of devices or projects requiring dual (+/-12V) power supply.



Description


Symmetric +/-12 VDC power supply has been designed for audio applications, can power up microphone pre-amplifier, audio buffers, audio mixer, distributions amplifier, headphone amplifier, VU meter and few o other equipment or projects required dual supply.

Mains supply input 240 VAC
Step Down Transformer 15-0-15V AC @ 350mA.
Output +/- 12 VDC Dual, 350 mA
Regulated Low ripple DC output
Earth connection for chassis ground
Onboard regulator for stable supply
Dual output LED indication
Supply input & output via screw terminal connector
Dual unregulated output +/- 22 VDC via berg connector


Schematic


click for full resolution

 

Parts List





PCB Design


PCB top layer

 

PCB bottom layer

 

 




 
 

 
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