IRKT105/04A

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Thyristors - SCRs - Modules: IRKT105/04A Application Field and Working Principle

A thyristor is a specialized type of bi-directional, solid state electronic switch which is designed to control current in an electrical circuit. It is also referred to as a silicon-controlled rectifier (SCR), thyristor module, or thyro-monolithic integrated circuit (T-MIC). IRKT105/04A is a specific type of thyristor module, which is widely used in the industrial and commercial fields for controlling current in AC circuits. In this article, we will discuss the application field and working principle of IRKT105/04A.

Application Field

The IRKT105/04A module is designed to be used in a wide range of industrial applications, including variable speed drives, arc welding, adjustable light control, battery charging, and AC motor control. It is especially well-suited for applications requiring high AC current switching capability and a wide control range. It is also suitable for use in temperature controllers, phase shifters and digital logic interfaces.

The IRKT105/04A module is typically used in AC circuits, and it is designed to control high currents (up to 1,500 A). It is also capable of performing pulse width modulation (PWM) for controlling high current. In addition, it is also suitable for applications requiring enhanced thermal dissipation, due to its thermal flywheel design.

Working Principle

The IRKT105/04A module is a thyristor module, which controls currents with the help of a four- layer PNPN structure. The switch works in the mode of current interruption, and it is triggered using an external gate voltage. When the gate voltage is triggered, a small current called the “gate current” is enabled, switching on the thyristor.The voltage at which the switch switches on and off is referred to as the “breakover voltage”. When the load current passing through the switch is lower than the breakover voltage, the thyristor remains off. Conversely, when the load current exceeds the breakover voltage, the thyristor automatically switches on.

The IRKT105/04A module is designed to be heat treated so that it operates efficiently at high temperatures. It is designed to be weather-resistant and vibration-proof, and its life expectancy is more than 10 million operations. In addition, the module features a logic-level control, which allows it to be controlled by low voltage logic signals. This feature is especially useful for AC motor control applications.

Conclusion

The IRKT105/04A is a highly efficient thyristor module that is widely used for controlling current in AC circuits. It is especially suitable for applications requiring high current switching capability and a wide control range. In addition, it features a logic-level control, which allows it to be controlled by low voltage logic signals. It is also designed to be heat treated and is weather-resistant, vibration-proof and has a long life expectancy.

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