SCR Power Controlled Market: Demand of SCR Power Controllers And Its Capability To Limit The Heating Process

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Silicon Controlled Rectifiers (SCR) are Thyristors, a three-junction P-N-P-N semiconductor devices treated as two interdependent transistors used in the switching of heavy electrical loads. SCR is a Shockley diode added with an extra terminal called the gate, used for triggering the SCR into conduction. An SCR unit is a combination of two SCRs arranged to control AC power. A solid state switching device provides fast, infinitely variable proportional control of electric power. With its optimum use, the SCR hold ability to switch on and off over a billion times. SCR, is also known as Shockley diode with an extra added terminal called as gate


The SCR power controller has two states, On and Off, allowing unidirectional flow of current. SCR power controllers are modelled to supply electric power to resistive loads. The controllers include power semi-conductors (SCRs), trigger circuitry, fuses supplied on panels and properly-sized heat sinks.

SCR power controllers play a vital role in industrial manufacturing process which uses electrical heating. SCR power controllers ensures the cost efficiency and high quality through their high flexibility, accuracy, energy efficiency and small footprint. Silicon is often used because of its low leakage current, voltage compensation and limiting current. SCR power controllers are the replacements for relays due to wear free switching offered by thyristor devices. Due to its capability of switching a variety of single to three phase loads they are suitable for switching electric loads easily. The growing demand of SCR power controllers and its capability to limit the heating process are the major compelling factors for the application of SCR power controllers by end user industries.


The thyristors are good enough for driving resistive, inductive and transformer loads, silicon carbide elements, quartz lamps and infrared loads. One of the major restraining factors of the SCR power controller market is lack of expertise to operate and regular maintenance of SCR power controller. Companies are facing problems related to the thrysistor such as its rating, debugging, fixing a thrysistor, and its blown fuse. Hence, these technical concerns or inadequacy of technical knowledge of handling SCR power controllers may result in doubts of investments by industry players, which might influence the SCR power controller market globally

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