Tuesday, April 24, 2012

How a Thyristor Works? Animation

 












(Image: Thyristor Symbol)


A Thyristor (silicon controlled rectifier or SCR) is a little like a transistor. When a small current flows into the GATE (G), this allows a larger current to flow from the ANODE (A) to the CATHODE (C). Even when the current into the gate stops the thyristor continues to allow current to flow from anode to cathode. It latches on.



















(Image: How a Thyristor works)

If the wire course is touched by the loop, current flows into the 'gate' of the thyristor and the buzzer sounds.
The buzzer will continue to sound after the loop has touched the wire course. This is due to the thyristor which once activated cannot be deactivated until all power is turned off.
This type of circuit is also known as a ‘latching circuit'.


(Courtesy:  http://www.technologystudent.com)

2 comments:

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