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Thyristors - TRIACs

A TRIAC, short for “Triode for Alternating Current” is a semiconductor device used to switch AC current across a load. It belongs to the family of thyristor devices, which consist of three layers of semiconductor material. The TRIAC is a bidirectional device, meaning it can conduct current in both the forward and reverse directions. It is most commonly used in residential and commercial lighting systems, as well as in AC-powered devices such as power tools, appliances, and audio equipment.

The Q2016RH6 is a commonly used TRIAC. It is a zero-crossing device, meaning it does not turn on until the current passes through zero on the AC cycle. This eliminates the need for phase control and makes it ideal for applications that require accurate phase control, such as motor speed control. It is also capable of controlling high current loads, of up to 16 Amperes.

The working principle of a TRIAC can be explained with the use of a schematic diagram. The basic functioning of a TRIAC consists of three stages: the forward conduction stage, the off state, and the reverse conduction stage.In the first stage, the device is in the forward conduction stage. Current is supplied to the gate of the thyristor, which activates the thyristor and allows the current to flow through the main leads. In the off state, the thyristor does not conduct current. This is due to the gate being disconnected from the main leads. In the last stage, the thyristor is in the reverse conduction stage. The current flows in the opposite direction, and the device continues to conduct until the gate is disconnected again.

The Q2016RH6 is designed to meet specific industrial standards and requirements. It has the highest current rating amongst the Q-series devices, plus it is designed with a rugged encapsulation that allows it to withstand extreme temperatures. Additionally, the device\'s built-in SNUBBER circuit helps to reduce losses and EMI radiation. This makes it suitable for a variety of industrial and consumer applications.

Overall, the Q2016RH6 is a reliable and versatile TRIAC device, capable of controlling high-current loads. It is ideal for applications where accurate phase control is required, such as motor speed control. Additionally, its rugged housing allows it to withstand even extreme temperatures, making it perfect for harsh industrial environments.

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