What is the use of Surge Capacitor in LAVT?
A surge capacitor is used to mitigate (minimize) voltage
surges. Capacitor impedance can be modeled as 1/jwC, j = i =
imaginary value used in vectors, w is the frequency, and C
is the capacitance. A fairly small capacitor on the input to
a power supplying circuit will have a large impedance, and
so will impact the circuit operation very little due to the
low power frequency. Surges are high frequency. When a surge
occurs, the capacitor impedance appears much smaller to the
high frequency surge, effectively shunting the surge energy
to ground; this minimizes the surge with respect to the
protected circuitry.
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suri transmission
Can u explain : how capacitor act when the supply is given is a.c and d.c. I know that when d.c supply is given then the capacitor charges and becomes open circuited. But please say about when a.c is given. I have seen that when a.c supply is given ,it charges and discharges, But when we plug in capacitor to our daily supply and take it out ,then we join those wires spark will appear,which seems charge is present ,but when a.c is given it should charge and discharge
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