Practice question

**Rectifier applications** diode must have reverse breakdown voltage higher than peak inverse voltage, centre-tap transformer provides two opposite phase voltages for full-wave, capacitor discharges through load R_L when diode off, drift current in junction is minority carrier motion due to field, diffusion due to gradient, diode conducts when forward biased anode positive. In a centre-tap full-wave rectifier, each diode rectifies half the total secondary voltage, as the centre tap splits the AC input into two equal halves. Substituting values gives Half the secondary voltage, which matches expected behaviour for this semiconductor device configuration, confirming doping, depletion and rectifier principles.