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Question

what is the significance of time constant for a capacitor when it is used as an input filter

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Solution

Charging of the capacitor in RC circuit increases or decreases exponentially therefore time constant of the RC circuit is the time required to charge the capacitor by 63.2% of the difference between the initial and final value of the charge.

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Output characteristics : It is the graph drawn between output current and output voltage when input current is kept constant.

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