True RMS Watt Meter


Posted on Sep 4, 2012

This circuit will give you a good, Accurate Watt Meter that can measure various power levels. In the Origional Article the Shunt was a .001 Ohm Copper Shunt giving a 1000 Watt Scale. However, because Most Circuit Breakers in homes are 15 Amps, I made my unit to have a range of Zero to 1500 Watts.


True RMS Watt Meter
Click here to download the full size of the above Circuit.

The Shunt on my unit is comprised of 5 small LOOPS in a Single piece of wire in an Inverted V Shape or an " _n_n_n_n_n_ " Shape, going from pad to pad. I used a #16 AWG wire, but you need to determine wire size and lengths based on the wattage r




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Battery Operated LED Lantern
    Ultrasonic-receiver
    Cd Ignition System For Autos Circuit
    Make an Atom Synchronised Clock from a 1950s Slave Dial using Arduino
    led blinking program with pic16f887
    Automatic Mains Disconnect
    Photo Meter Assesses Ambient Light Schematic
    Model Railway Short-Circuit Beeper
    Colpitts oscillator
    Battery Backups in Consumer Electronics



    Top