Triac | Introduction
1- A Triac is a high-speed solid-state device that can switch and control AC power in both directions of a sinusoidal waveform.
2- TRIAC stands for TRIode for Alternating Current.
3- A Triac is a 4-layer, PNPN in the positive direction and a NPNP in the negative direction, three-terminal bidirectional device.
4- Triac is also a member of the thyristor family.
Triac | Symbol of TRIAC
Triac | Construction Of TRIAC
A Triac is a 3 terminal device, as two conventional thyristors connected together in inverse parallel (back-to-back) with respect to each other with a common Gate terminal.
Triac | Working of TRIAC in Quadrant 1
When the gate and MT2 are positive with respect to MT1.
Triac | Working of TRIAC In Quadrant 3
When the gate and MT2 are negative with respect to MT1.
Triac | Characteristics
Triac | Applications Of TRIAC
TRIACs are used in many applications such as light dimmers, speed controls for electric fans and other electric motors.
Triac | Limitations Of TRIAC
Low Rating and Less Reliability than SCR
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