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What is forward and reversed biasing?

Updated: 9/17/2019
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11y ago

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This is a characteristics of semiconductor diode {pn junction}.In forward biasing here we connect p to positive terminal and n -ve terminal when external voltage is aplied in such a direction that cancels out potential barrier thus permitting current

flow

In reverse biasing the connection of pn junction is inverted but in this the potential barrier incresesand offers resistance to current flow but at a certain voltage current increases suddenly(the break down voltage)the zener diode works in this principle

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Q: What is forward and reversed biasing?
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There are 2 type of biasing in PN junction didoe Forward biasing Reverse biasing


What effect of depletion layer by biasing?

on forward biasing width of the depletion layer decreases whereas on reverse biasing the width of depletion layer increases.


What happens in the depletion region in reverse bias?

in forward biasing depletion region width decreases and in reverse biasing it increases .


What is the forward biasing of a junction?

Forward biasing can be satisfied when a positive polarity of a battery connect with P side and the negative connect with N side In the P-N junction, that is caused : The free electrons in the N side will pushed by negative charge, and holes move far of positive charge, after that we will have a barrier (small area of barrier between P and N) this biasing called Forward biasing, because of small resistance of barrier, the current will flow, we can use it as a switch. the Reverse biasing is the opesit of all these specifications.


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