Regulated dual power supply circuit

Posted on Feb 4, 2014

The circuit given here is of a regulated dual power supply that provides +12V and -12V from the AC mains. A power supply like this is a very essential tool on the work bench of an electronic hobbyist. The transformer T1 steps down the AC mains voltage and diodes D1, D2, D3 and D4 does the job of rectification. Capacitors C1 and C2 does the job of

Regulated dual power supply circuit
Click here to download the full size of the above Circuit.

filtering. C3, C4, C7and C8 are decoupling capacitors. IC 7812 and 7912 are used for the purpose of voltage regulation in which the former is a positive 12V regulator and later is a negative 12V regulator. The output of 7812 will be +12V and that of 7912 will be -12V.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    30m Band CW-Transceiver
    RF 433MHz - 3 channels remote control
    Rectangular/Triangular Waveform Converter
    5 volt ttl voltage monitor
    Dome Drive Schematic
    LED Lighting For Consumer Unit Cupboard
    3 channel audio mixer
    Ultra-Sonic Ranging Design
    Tesla coil circuit
    OP113 wide range of precision temperature measurement circuit
    Low power timer switch