WHAT IS FIRING ANGLE?WHY IS IT USED?
There are 360 electricaldegrees in a cycle; 180 degrees in a half-cycle. The number of degrees from the beginning of the cycle until
the SCR is gated ON is referred to as the firing angle, and the number of degrees that the SCR remains conducting is known as the conduction angle.
In SCR Phase Control, the firing angle, or point during the half-cycle at which the SCR is triggered, determines the amount of current which flows through the device. It acts as a high-speed switch which is open for the first part of the cycle, and then closes to allow power flow after the trigger pulse is applied.so it is used.
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