Electromagnetic Interference Control Considerations Solenoid Operated Control Devices

Relay and solenoid controlled devices have historically been a common source of electromagnetic interference. The pulsed electrical energy resulting from actuation and deactuation generates broad frequency spectrum interference. Establishment of meaningful component and subsystem specifications and application of proper design techniques can minimize the interference generated by such devices and subsystems and can also minimize their susceptibility to other interference sources. This paper reviews the approaches which will significantly minimize electromagnetic interference problems.