transformer not working Whats causing


Joined Mar 14, 2008
The low primary inductance at that low frequency (apparently about 80 Hz) means the magnetizing current is very high.
Thus most of the primary voltage is dropped across the 120 ohm resistor.

So you have three choices:
  • Reduce the primary resistance value
  • Increase the primary inductance
  • Increase the frequency
until the magnetizing current does not cause a significant drop across the resistor.