5V transformerless Power Supply


Posted on Mar 28, 2013

I use this power supply for applications that doesn't use too mucho power. It can provide power to circuit that uses less than 100mA without any problem. The disadvantage of this circuit is the danger of an electrical shock, so it cannot be used if the circuit is in contact with the user. The voltage supplied by this is determined by the zener diode. The version of the transformerless power supply that uses a bridge rectifier provides more current than the first one because it rectifies both phases of the AC voltage. Do not use it for 250VAC. It is dangerous! In fact, DO NOT BUILD THIS PROJECT.


5V transformerless Power Supply
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    200 watt Audio amplifier with STK4050
    80x32 LED matrix display
    Transmission indicator
    Proximity alarm
    Sensitive Continuity Checker
    Simple Capacitive Touch Sensor
    telephone sharer circuit 9
    FET based audio preamplifier
    AN7223 Am Tuner Fm/am If Amplifier Circuit For Radio Cassette Recorder Panasonic Semiconductor
    Infrared Remote Control On/Off Switch Electrical Mini Project
    An Add-On Current Limiter For Your PSU circuit
    Touch delay switch circuit diagram CD4013 composed
    Stepping CS6061A touch dimmer light circuit



    Top