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Hi, pls explain why the output frequency of a center tap full wave rectifier becomes double the input frequency.

Hi,


pls explain why the output  frequency of a center tap full wave rectifier  becomes double the input frequency.

Grade:

1 Answers

Aman Bansal
592 Points
9 years ago

Dear Devesan,

As the current flowing through the load is unidirectional, so the voltage developed across the load is also unidirectional the same as for the previous two diode full-wave rectifier, therefore the average DC voltage across the load is 0.637Vmax However in reality, during each half cycle the current flows through two diodes instead of just one so the amplitude of the output voltage is two voltage drops ( 2 x 0.7 = 1.4V ) less than the input Vamplitude. The ripple frequency is now twice the supply frequency (e.g. 100Hz for a 50Hz supply)

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