noun

• A device containing light-emitting and light-sensitive components, used to couple isolated circuits.

  ‘The GPS communicates with the camera via an optocoupler and an infrared emitter.’

  More example sentences

  • ‘Optocouplers were discovered right after photo-transistors, by combining a LED and photo-transistor in the same case.’
  • ‘These new optocouplers are ideal for a variety of industrial and consumer applications, such as plasma display panels, power supply and digital field bus isolation.’