Efficiency of bridge rectifier

The efficiency of single phase full-wave bridge rectifier is given by the ratio of the output dc power to the total amount of input power supplied to the circuit. It is also called conventional efficiency.

Ƞ = DC power delivered to the load/AC input power from the transformer


Pdc = I2L(dc) RL = (2IL(dc)/ π) RL = 0.636 ILM RL

Pin = I2L­(ac)(RL + RF) = I2L(dc) (RL + RF)/2

% Ƞ = 81.2/(1 + 2rd/R­L)


RL = load resistance

rd = diode forward resistance

RF = Rs + rd

IL = rms value of load current

ILM = maximum value of load current

IL(dc) =average value of load current




Related Topic

  1. Full-wave bridge rectifier
  2. Average and RMS Value of bridge rectifier
  3. Ripple Factor of bridge rectifier
  4. Peak Inverse Voltage (PIV) of bridge rectifier
  5. Peak Current of bridge rectifier
  6. Transformer Utilization Factor of bridge rectifier
  7. Advantage of bridge rectifier
  8. Disadvantage of bridge rectifier

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