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Compare SCR and TRIAC
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written 5.4 years ago by
teamques10
★ 68k
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| Sr No. | SCR | TRIAC |
|---|---|---|
| 1 | It is a unidirectional device | It is a bidirectional device |
| 2 | UJT is used for triggering | DIAC is used for triggering |
| 3 | The gate current can only be positive | The gate current can be positive or negative |
| 4 | Anti parallel SCRs are used for power control of inductive loads | TRIAC is not suitable for power control of inductive loads |
| 5 | Operates only in the first quadrant | Operates in either first or third quadrant |
| 6 | It has 4 layers of Semiconductor | It has 5 layers of Semiconductor |
| 7 | Used in applications like, controlled rectifiers, inverters, battery charger, speed control of DC & AC motors etc. | Used as a static switch fan regulator, lamp dimmer, AC voltage stabilizer etc. |
| 8 |  |
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