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 V_m of the applied voltage.

Regulation

It is defined as the variation in DC voltage with the change in DC load current

where V_NL is the no-load output voltage, i.e., voltage with zero load current and V_L, is the output voltage with normal load current.

For half-wave rectifier, combining Eqs. ,we get

                                                           ................ (2)

Regulation depends on diode forward resistance and must be low for good regulation. R_f includes the DC resistance of transformer secondary