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The objective of this Lab activity is to examine the structure and operation of the Silicon Controlled Rectifier or SCR. SCRs are mainly used in devices where the control of high power, possibly at high voltage, is needed.
An SCR (Silicon Controlled Rectifier) is a controllable medium- to high-power self-latching solid-state DC power switch. This article explains its basic operation and shows some practical ways of using it. SCR basics. An SCR is a four-layer PNPN silicon semiconductor device.
SCRs and similar devices are used for rectification of high-power AC in high-voltage direct current power transmission. They are also used in the control of welding machines, mainly gas tungsten arc welding and similar processes.
A good example of thyristor power control is in the control of electric lighting, heaters and motor speed. In the next tutorial we will look at some basic Thyristor Circuits and applications using both AC and DC supplies.
The objective of this Lab activity is to examine the structure and operation of the Silicon Controlled Rectifier or SCR. SCRs are mainly used in devices where the control of high power, possibly at high voltage, is needed.
17 wrz 2024 · We will learn its symbol, structure, working, Turn ON and Turn OFF methods and some applications. The Silicon Controlled Rectifier (SCR) is the most important and mostly used member of the thyristor family. SCR can be used for different applications like rectification, regulation of power and inversion, etc.
24 lut 2012 · The basic operating principle of an SCR can be understood using the two transistor model of SCR, which combines p and n layers. An SCR is a pnpn thyristor. By bisecting it, we see two transistors: one pnp transistor with J 1 and J 2 junctions and one npn transistor with J 2 and J 3 junctions.
