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Why Varistor Is Used?
A varistor (voltage-dependent resistor (VDR)) is a surge protecting electronic component with an electrical resistance that varies with the applied voltage. Varistors are used to protect a circuit from high voltage surges. When a high voltage surge is applied to a circuit, the outcome is usually catastrophic to the circuit.
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Timestamp
00:00 - Over Voltage
00: 23 - Varistor Working
03:24 - Connection of Varistor
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