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  • Created by: Shannon
  • Created on: 31-05-13 14:22
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  • Transforming
    • Two wires wound around an iron core
      • AC voltage (input) from the primary coil
      • The output AC voltage is obtained from the secondary coil
    • Isolating transformer has equal coil turns on primary and secondary coils
      • Used for safety-bathrooms
    • Output power=Ps= VsIs
      • Input power= Pp=VpIp
    • Power lines get hot and lose energy to the surroundings
    • Changing current produces a changing magnetic field-induces a changing voltage in the secondary coil
    • Step down-more turns on the primary coil


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