CQ220-8B

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Thyristors are semiconductor devices, first introduced in 1957, that are used to control current flow. TRIACs are a subset of thyristors and they are mainly used to control AC current. The CQ220-8B is a TRIAC, which is potentially useful for commercial and industrial applications. This article will discuss the CQ220-8B, its applications and its working principles.

The CQ220-8B is a three terminal, high power TRIAC. It can function as a triode or a diode in a single package, and it has a wide range of Gate sensitivities. This makes the CQ220-8B well suited for applications that require high power, such as motor control. It also meets RoHS and UL requirements, making it a desirable option for many commercial and industrial applications.

The CQ220-8B can be used in a variety of ways. It can be used as a switch or as a regulator. In the switching mode, it is used to control the voltage or current of a circuit, making it ideal for use in motor control applications. It can also be used in applications that require AC/DC conversions, such as battery charging.

When used as a regulator, the CQ220-8B acts as a voltage controlled switch. It can be used to regulate the output voltage in order to keep it at a constant level. This is especially useful for applications that require precise voltage control, such as power supplies.

In addition to its switching and regulating capabilities, the CQ220-8B also offers protection from unintentional overvoltage and current. This feature is essential in applications that require a certain level of stability, such as those involving sensitive electronics.

The main working principle of the CQ220-8B is based on the principle of voltage triggered bidirectional conduction. It has two operating states: off and on. In the off state, a negative voltage applied to the gate terminal prevents any current flow between the two main terminals. When a positive voltage is applied to the gate, it causes a breakdown in the gate oxide layer, creating a conduction pathway and allowing current to flow between the two main terminals.

The breakdown voltage of the CQ220-8B is usually set between 80 and 150V, but it can be adjusted using a higher voltage. This can be used to provide additional protection against overvoltage and current.

The CQ220-8B is a versatile TRIAC that can be used in a range of applications. Its voltage regulation capability makes it ideal for use in power supplies, while its protection features make it suitable for use in applications that require stability. Its simple operation and wide range of gate sensitivities make it ideal for a variety of motor control applications. As such, the CQ220-8B is an excellent choice for a wide range of commercial and industrial applications.

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