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Current sensor

  1. Jun 17, 2006 #1
    I'd like to build my own current sensor.

    There's this site that ive seen h**p://www.coilgun.eclipse.co.uk/current_sensor_module.html
    and there is this equation that i don't understand.. kindly help..

    I actually want to sense current from running electrical appliances, (i.e. tv,electric fan)

    Thank's for helping me out.
  2. jcsd
  3. Jun 17, 2006 #2
    You have no choice. Appliances that aren't running draw no current. There may be a slight magnetizing current for a transformer or some standby current, but that is it.
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