Semiconductor Diode|Forward Bias and Reverse Bias

Give three differences between forward bias and reverse bias.

A Zener diode when used as a voltage regulator is connected (a) in forward bias (b) in reverse bias ( c) in parallel to the load (d) in series to the load.

P-N Junction||Forward Bias||Reverse Bias||Zener Breakdown and Avalanche Breakdown

P-N Junction||Forward Bias||Reverse Bias||Zener Breakdown and Avalanche Breakdown

(a). Explains briefly with the help of a circuit diagram how V-I characteristics of a p-n junction diode are obtainedin (i) forward bias, and (ii) reverse bias. (b). A photo diode is fabricated from a semiconductor with a band gap of 2.8 EV. Can it detect wave length of 6000. nm? Justify.

In a semiconductor diode, reserve bias current is due to drift of free electrons and holes caused by