During the positive half cycle of the input waveform, diode D1 is forward biased and diode D2 is reverse biased. Here 0.6V appears across the output as the diode is conducting. During negative half cycle the diode D1 is reverse biased and D2 is forward biased, so, −0.6V appears across the output as the diode is conducting in negative direction. This circuit can be used as a voltage limiter. This circuit will not allow any voltage above 0.6Vand below −0.6V.
Hence, the output waveform is
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