Why is the transformer core made of metal sheets?
Explanation of why the electric transformer has a core made of iron sheets. Eddy or Foucault’s currents
Power failure alarm using transformer and relay
This power failure alarm circuit is very simple and is very useful when used with electric ovens, a refrigeration systems or to prevent a thief from cutting off the electrical power because it immediately warns of the problem. It also serves you when the fuses have blown.