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What is Optocoupler?

Definition

A component that transfers electrical signals between isolated circuits using an LED and phototransistor pair. Optocouplers provide galvanic isolation in gate driver circuits, I/O modules, and communication interfaces.

Related Terms

Optical Isolation

Electrical separation between circuits using light transmission through an optoc...

Galvanic Isolation

Electrical separation between circuits that prevents direct current flow while a...

Gate Driver

A circuit that amplifies control signals to switch power semiconductors (IGBTs, ...

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