Full wave rectifier with 50 Hz input frequency

Explanation

A full-wave rectifier rectifies both cycles of the AC input i.e., it conducts two times during one cycle. The output frequency is Twice/double that of the input frequency. Therefore the output frequency is 2 x 50 = 100 Hz.

If you look at the figure above you will find that for half wave rectifier (the Right side of Image) the 1 cycle of the output wave completes in the same time as the input. So the output has the same frequency as the input for half wave rectifier.

Now in case of full wave rectifier (the left side of Image) the 1 cycle of the output completes in half the duration of input cycle, i.e. the output cycle repeat twice during the input cycle. It means that the Output frequency of a full wave rectifier is twice that of input frequency.

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