Electrical Engineering ⇒ Topic : Peak inverse voltage (PIV) or peak reverse voltage (PR V) or voltage reverse maximum (VRM)
Peak in verse voltage (PIV) or peak reverse voltage (PRV) or voltage reverse maximum (VRM)
This is the maximum value of the reverse voltage which the rectifier has to withstand during non-conduction period. In a half-wave rectifier, the peak inverse voltage is equal to the peak value Vm of the applied voltage.
It is defined as the variation in DC voltage with the change in DC load current
where VNL is the no-load output voltage, i.e., voltage with zero load current and VL, is the output voltage with normal load current.
For half-wave rectifier, combining Eqs. ,we get
Regulation depends on diode forward resistance and must be low for good regulation. Rf includes the DC resistance of transformer secondary
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