Average and RMS Value of bridge rectifier


Vm = maximum value of transformer secondary voltage

Vs =rms value of secondary voltage

VLM =maximum value of load voltage = Vsm – diode drop – secondary resistance drop

VL = rms value of load voltage

VL(ac) = rms value of ac component in the output voltage

IL = rms value of load current

VL(dc) =average value of load voltage

IL(dc) = average value of load current

ILM = maximum value of load current

RL = load resistance

RS = transformer secondary resistance

rd = diode forward resistance

VL = VLM/√2 = 0.707 VLM;

VL(dc) = 2VLM/ π = 0.636 V

VL(ac) = √(VL2 – VL(dc)2)


ILM = VLM/RL; IL = ILM/√2 = 0.707 ILM

IL(dc) = 2ILM / π = 0.636 ILM ; IL(ac) = √(IL2 – IL(dc)2)

Incidentally, IL(ac) is the same thing as Ir(rms)




Related Topic

  1. Full-wave bridge rectifier
  2. Efficiency 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

Leave a Reply

Your email address will not be published. Required fields are marked *