Coupling

Induction

Self induction

Mutual induction

Low contact current

Excessive contact current

Chatter during a slow release

Excessive number of operations

Burn out windings

Leads to interwinding leakage

Transformer heated up excessively

Delivers reduced secondary voltage

Fast switching

Slow switching

Packet switching

Medium switching

Supply power to loads

To increase load current

To decrease load current

To protect the load from arcing