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Is a triac active or passive?

in Electrical Engineering

Is a triac active or passive?

1 Answer

A TRIAC (Triode for Alternating Current) is considered an active device. This is because it can both control and amplify electrical signals, unlike passive devices which can only control or dissipate energy (like resistors, capacitors, and inductors).

The TRIAC is a type of semiconductor device that can conduct current in both directions, making it useful in controlling AC (alternating current) power. It works by switching on and off, allowing or blocking current flow, depending on the control signal applied. This active behavior (amplifying the control signal and controlling current) classifies it as an active device.

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