Question
Download Solution PDFThe centre-tapped full wave rectifier's efficiency is ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFull wave rectifier
Case 1: During +ve half
Do ON and D1 OFF
Vo = Vs
Case 2: During -ve half
Do OFF and D1 ON
Vo = -Vs
The output waveform is:
The rectification efficiency is the ratio of the DC output power to the AC input power.
\(V_{o(avg)}={2V_m\over \pi}\) and \(I_{o(avg)}={2V_m\over \pi R}\)
\(V_{o(rms)}={V_m\over \sqrt{2}}\) and \(I_{o(rms)}={V_m\over \sqrt{2}R}\)
% η = \({V_{o(avg)}\times I_{o(avg)}\over V_{o(rms) \times I_{o(rms)}}}\)
% η = \({{2V_m\over \pi}\times{2V_m\over \pi R}\over {V_m\over \sqrt{2}}\times {V_m\over \sqrt{2}R}}\)
% η = 81.2%
Mistake Points The rectification efficiency of half wave rectifier is 40.6%
Last updated on Jul 1, 2025
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