MCR218-004

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The MCR218-004 is a type of Load Commutated Thyristors, specifically SCRs (silicon controlled rectifiers). SCRs are devices used to switch power that utilize the properties of current and voltage to determine when to turn the power on and off. SCRs are known to be especially reliable and efficient, making them a popular choice for many applications.

The MCR218-004 has a rated voltage of 800 V and a maximum blocking voltage of 800 V. It also has a maximum permissible current of 80 A at 25 degrees Celsius and a maximum overload current of 400 A for 10 cycles with a peak current of 800 A. The blocking time of the MCR218-004 is 0.5 us max. These characteristics make it a suitable component for medium to large motor starting applications.

The working principle of the MCR218-004 is fairly straightforward. When current is applied to the anode (A) and gate (G) terminals of the SCR, the power is allowed through and directed to the cathode (K) terminal. It will not turn the power off until the current is reversed, causing it to become biased in the reverse direction, reducing the current to zero. This is known as "commutation", and it is the essential ability of SCRs.

MCR218-004 has a wide range of applications, including the control of motor drives, rectifiers, electric furnaces, and other power electronic devices. In many motor drives, it is used as the main switching device for controlling the motor speed. In electric furnaces, it is used for switching the magnetic field, which in turn creates the desired current flow for heating. Rectifiers also use MCR218-004 as the main switching device, allowing them to regulate the amount of DC voltage produced at the output.

In addition to its practical applications, MCR218-004 is also used in certain research studies. The study of current and voltage characteristics in SCRs is further enhanced by the use of MCR218-004, providing researchers with the ability to observe and measure the actual behaviour of the device.

Overall, the MCR218-004 is a reliable, efficient and cost-effective SCR that is suitable for a wide variety of applications. It is a reliable component that can handle high currents and has a wide range of application fields.

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