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Thyristors - TRIACs

T1620-600W Application Field and Working Principle

The T1620-600W is a semiconductor device used for starting and controlling the voltage and current of electrical loads such as motors and lighting. It has two main applications: the main purpose of the T1620-600W is to provide switching control of an alternating current (AC) load. Additionally, it can also be used to protect the circuit and the load from surges in voltage.

The T1620-600W is a triode alternating current (TRIAC) device. Unlike a standard thyristor, the TRIAC is bidirectional in that it can be triggered by both positive and negative gate signals. The T1620-600W features an integrated de-saturable gate, insulation plates, and surge protection circuitry which help to protect the device from over-voltages.

When the T1620-600W is used to switch power to an AC load, it is first connected between two terminals of the AC supply, with a medium to low voltage applied to the gate terminal. When the gate voltage reaches the a predetermined activating level, the TRIAC will switch on and conduct the AC signal between its main terminals. As the TRIAC switches on, it will turn off if the gate signal decreases to a low threshold level. This allows for precise control of the AC signal, in terms of both voltage and current.

The T1620-600W is also capable of surge protection. In the event of a voltage surge, the integrated insulation plates will ensure that the gate signal will rise to the predefined activating level, triggering the TRIAC to turn on and limit the surge. This will help to protect both the TRIAC device and the circuit from damage.

The T1620-600W has a wide range of applications, from lighting to motor speed control and protection against voltage surges. While these devices are not suitable for all types of applications, they are highly reliable and efficient for controlling and limiting the voltage and current of AC loads.

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