REVERSE BIASED DIODE



The Fig shows the reverse bias diode. The reverse voltage across the diode VR    while  the  current  flowing  is  reverse  current  ‘R  flowing  due  to  minority  char carriers. The graph of ‘R against VR is called reverse characteristics of a diode.

As reverse voltage is an increased, reverse current increase initially but after
a  certain  voltage,  the  current  remains  constant  equal  to  reverse  saturation current 10 though reverse voltage is increased.


The point A where breakdown occurs and reverse current increase rapidly is called knee of the reverse characteristics.



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