DIODE:
Diode is an
electronic pn-junction device which is used to rectification. It consists of
two material p-type and n-type material the region between P and N material is
called depletion region.
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In diode the P-type is covered
more place by holes and small number of electron, while in N-type the most of
place is covered by electron and less area have holes.
RECTIFICATION:
Rectification is a process in which alternating current is
converting into direct current.
BIASING OF DIODE:
There are two method of biasing in diode.
1. Forward biasing
2. Revised biasing
FORWARD BIASING:
In this type of biasing the diode acts as closed circuit because in this case the current is conduct through diode. To make the diode forward biasing connect the positive terminal of source to P type and the negative terminal of source to N type of diode as shown in figure
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In this process the depletion region become
narrow. And the voltage drop from the depletion region is 0.7V.
REVERSED BIASING:
In this type of biasing the diode
acts as open circuit because in this case the current does not conduct through
diode. To make the diode reversed biasing connect the negative terminal of
source to P type and the positive terminal of source to N type of diode as
shown in figure
In this process the depletion
region becomes wider. And the voltage drop from the depletion region is zero
because it acts as open switch but if we continuously supplying voltage then
after 10 volt the depletion region blast and its going in break down region and
the diode became useless, and maximum current flow through it .
DIODE MODEL:
There are three type
diode models,
1.
Ideal model
2.
Practical model
3. Complete model
# For complete detail of diode models in forward bias click here Continue
# And For complete detail of diode models in reversed bias click here continue
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