Solenoid switches, also known as relays, were historically used in telegraphic communications to relay messages by using a solenoid to magnetically attract an iron armature to operate a set of contacts, which in turn controlled a larger current in another circuit.

Authors

• Person: Not available Organization: EE Power
  A Deep Dive Into Resistors, Inductors, and Capacitors - EEPower

Sources

• A Deep Dive Into Resistors, Inductors, and Capacitors - EEPower eepower.com EE Power via serper

Referenced by nodes (1)

• relays concept