CQ220I-6DS

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Thyristors - TRIACs

CQ220I-6DS is a type of thyristor, more commonly known as a TRIAC. A TRIAC is a form of semiconductor device used to control current conveniently and cost effectively. Some of the key features of TRIACs, such as the CQ220I-6DS, are their fast switching time and low on-state resistance. This makes them suitable for a variety of applications like motor starters, AC power controllers and machine tools.

Applications of CQ220I-6DS

TRIACs like the CQ220I-6DS are widely used in various areas. CQ220I-6DS is mainly used where fast response is necessary such as electromagnetic solenoid valves or motor starters. It is also used in motor speed control and motor soft-starter circuits.

Working Principle

TRIACs like the CQ220I-6DS have three terminals: gate, anode, and cathode. When an external voltage is applied to the gate terminal of the TRIAC, the device starts to conduct, resulting in current flow between the anode and cathode. When gate current is insufficient to maintain conduction, the current flow stops and the TRIAC turns off. This process of switching current is known as ‘bidirectional conduction’, which is the basis for CQ220I-6DS feedback control.

When the external gate voltage is increased, the TRIAC conducts more current. This current is measured and sent to the voltage control unit, which adjusts the setting of the TRIAC’s gate. The final result is increased control accuracy of the current flow. This is often used in applications such as temperature control.

Conclusion

CQ220I-6DS is a member of the TRIAC family. Its main features include fast switching time and low on-state resistance. This makes TRIACs well suited for a variety of applications, such as motor starters and machine tools. Its working principle involves applying an external voltage to the gate terminal. This triggers the device to conduct current between the anode and the cathode. This process of bidirectional conduction is the basis of CQ220I-6DS feedback control.

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