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Thyristors - SCRs

CS202-4M-2 Application Field and Working Principle

Thyristors are electronically controlled semiconductor devices which are designed to be used in power circuits to control current and voltage. They are also referred to as silicon-controlled rectifiers (SCRs) and have been used since the 1970s for switch mode power supplies and in a variety of industrial and consumer applications. CS202-4M-2 is a type of Thyristors – SCRs. It is a four-pin SCR module and is specifically designed for surface mount applications when space is at a premium. It is also suitable for low-power, moderate-current non-isolating applications.

The operating principle of the CS202-4M-2 is based on bi-directional current control, which allows the controller to regulate the amount of current passing through the electronic circuit. The SCR is built with a four layer structure consisting of an anode, an N-type base, an anode, and an N-type collector. When a control Voltage is applied to the anode, it activates a high voltage current through the N-type base, thus allowing current flow through the N-type collector and consequently through the anode. The primary function of the CS202-4M-2 is to switch, or regulate, the current. This makes it particularly suited for electronic devices that require precise current regulation, such as voltage converters, motor controllers and lighting systems.

The CS202-4M-2 is also suited for applications in which extreme voltage swings are expected. Its ability to maintain a constant voltage while allowing high voltage swings means that it can be used in various types of circuits such as TL494, DC motors and multi-phase power supplies. It also makes it ideal for use in applications such as auto-start commercial electric motors, heat pumps and UPSs. The module is also highly reliable, with a maximum operating temperature of 150°C.

The CS202-4M-2 is also designed with safety in mind, as it is UL approved and cautions against use of incorrect cables or other components. It has an over-current and over-voltage protection feature which automatically turns-off the power if the current exceeds the safe levels and warns the user about the excessive current. The module also features a thermal shutdown which prevents the unit from overheating.

The CS202-4M-2 can be used in a variety of applications such as in industrial electrical equipment, motor control systems and lighting systems. Its ability to control current and voltage in a precise manner, as well as its ability to handle extreme voltage swings and protect against over-currents, make it an ideal component for these applications. This Thyristors – SCRs module thus prove to be a versatile component that can be depended upon in many situations.

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