Rectifier/filter circuit Semiconductors

Posted on Feb 6, 2014

A bridge rectifier `pack` is highly recommended over constructing a bridge rectifier circuit from individual diodes, because such `packs` are made to bolt onto a metal heat sink. A metal box is recommended over a plastic box for its ability to function as a heat sink for the rectifier. A larger capacitor value is fine to use in this experiment, so

Rectifier/filter circuit Semiconductors
Click here to download the full size of the above Circuit.

long as its working voltage is high enough. To be safe, choose a capacitor with a working voltage rating at least twice the RMS AC voltage output of the low-voltage AC power supply. High-wattage 12-volt lamps may be purchased from recreational vehicle (RV) and boating supply stores. Common sizes are 25 watt and 50 watt. This lamp will be used as a "heavy" load for the power supply. This experiment involves constructing a rectifier and filter circuit for attachment to the low-voltage AC power supply constructed earlier. With this device, you will have a source of low-voltage, DC power suitable as a replacement for a battery in battery-powered experiments. If you would like to make this device its own, self-contained 120VAC/DC power supply, you may add all the componentry of the low-voltage AC supply to the "AC in" side of this circuit: a transformer, power cord, and plug. Even if you don`t choose to do this, I recommend using a metal box larger than necessary to provide room for additional voltage regulation circuitry you might choose to add to this project later. The bridge rectifier unit should be rated for a current at least as high as the transformer`s secondary winding is rated for, and for a voltage at least twice as high as the RMS voltage of the transformer`s output (this allows for peak voltage, plus an additional safety margin). The Radio Shack rectifier specified in the parts list is rated for 25 amps and 50...

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    MICRO FM Bug
    Guitar Reverb II
    Ultrasonic bug-chaser
    motor control
    LED Audio VU Meter Circuit
    Moisture Sensor Project
    Solar Relay
    Homebrew Utrasonic Imager
    slave flash trigger