How do you calculate current on the secondary side of a transformer circuit.

Discussion in 'General Electronics Chat' started by electronice123, Dec 9, 2009.

  1. electronice123

    Thread Starter Senior Member

    Oct 10, 2008
    If I have a transformer that has a 100:1 turns ratio, and the primary circuit is given 10V at 5 amps, the secondary circuit (considering no losses) would put out 1,000V @ .005A.

    So my question now, if the load on the secondary circuit has a resistance of 200 Ohms, what current flows through the circuit? how do you calculate it?
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    I = E/R. That means 5 amps. Your transformer can only source 5 ma. The transformer secondary will get hot. Your load can't be larger than 200K and not overload the transformer.
    Last edited: Dec 10, 2009