What do you mean by negative clamper, Electrical Engineering

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Q. What do you mean by Negative Clamper?

During the positive half cycle the diode conducts and acts like a short circuit. The capacitor charges to peak value of input voltage V_m. During this interval the output V_o which is taken across the short circuit will be zero.
During the negative half cycle, the diode is open. The output voltage can be found by applying KVL.

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