C155M

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Thyristors, also known as Silicon Controlled Rectifiers (SCRs), are widely used in electronic control of power systems. The C155M is a type of SCR developed by Mitsubishi Electric that is commonly used to control electrical current. This article will discuss the application field of the C155M and its working principle.

The C155M is designed for both commercial and industrial applications. It is typically used for heavy duty controllable AC loads, and is especially suited for use in applications such as adjustable speed drives and motor control. It also can be used for a variety of other industrial control applications, including telecommunications, medical equipment, traffic systems, and laboratory devices.

The C155M is a gate turn-off thyristor which is designed to control, or switch, current in a circuit. It is an alternating current device and can handle voltages of up to 690 volts, AC. The C155M operates with a gate to control the switching on and off of the thyristor. When the gate is triggered, the thyristor turns on and a current flows. When the gate is released, the thyristor turns off, and the current is interrupted.

The C155M is a three terminal, four layer, insulated gate device. It has a cathode, gate and anode. The cathode is connected to the negative side of the voltage, the anode is connected to the positive side, and the gate is connected to a signal source. When the gate is triggered, the thyristor turns on and current flows through it, thus switching the circuit on. When the gate is released, the thyristor operates as a diode, switching the circuit off.

When the gate is triggered, there is a characteristic voltage known as the "hold-on voltage" that must be maintained across the gate and cathode to keep the thyristor turned on. If the voltage drops below this value, the thyristor will turn off and the current will be interrupted. This characteristic can be used to control current in a circuit. When the control voltage is greater than the hold-on voltage, the thyristor will be on and current will flow. When the control voltage is less than the threshold voltage, the current will be interrupted and the circuit will be switched off.

The C155M has several advantages over other thyristors. It has a low on-state voltage drop and a fast switching time. This allows it to be used in high frequency applications. In addition, it is reliable and can withstand a large amount of inrush current. The C155M is also relatively inexpensive and easy to install, making it a popular choice for many industrial applications.

In conclusion, the C155M is a thyristor, specifically a silicon controlled rectifier, that is used to control current in a circuit. It is designed for both commercial and industrial applications and can handle voltages of up to 690 volts, AC. It operates with a gate to control the switching on and off of the thyristor and has several advantages over other thyristors. It has a low on-state voltage drop, a fast switching time, is reliable, and is relatively inexpensive. This makes the C155M an excellent choice for many industrial control applications.

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