Interested to Buy Any Domain ? << Click Here >> for more details...
What is UJT PNP, NPN transistor & working principles?
- 1 Answers
- 12754 Views
- TATA, I also Faced
- E-Mail Answers
Answer Posted / saiful islam
PNP configuration
NPN AND PNP
PNP transistor:
When common base connection of a NPN transistor.In the
forward bias connection of the first PN junction ,it causes
the majority charge carrier(holes) in the P-type ,flow from
emitter to the base region .This constitutes the emitter
current (Ie) in the transistor.As these majority carrier
(hole) cross in to N-type base .They are combine with the
electron .Only the few hole (i.e less than 5%) combine with
the electrons ,because the base of this transistor is
lightly doped and very thin .Expects those holes ,all other
i.e More than 95% cross in to the collector region.This
constitutes collector current (Ic). In this process ,almost
the whole emitter current (holes) flows into the collector
region .So in this transistor ,current conduction in the
circuit is by holes.
Ie=Ic+Ib
Where ,
Ie=emitter current,
Ic=collector current and
Ib=base current
NPN transistor:
When common base connection of a NPN transistor .In the
forward bias connection of the NP junction,it causes the
majority charge carrier(electrons)in the N-type ,flow from
emitter to the base region.This constitutes the emitter
current(Ie) in the transistor.As these majority
carrier(electrons)cross in to the P-type base.They are
combine with the holes.Only the few electrons(i.e less than
5%) combine with the holes ,because of this transistor is
lightly doped and very thin.The remainder i.e more than 95%
cross into the collector region.This constitutes collector
current (Ic).In this way the whole emitter current
(electrons)flows into the collector region .So in this
transistor, current conduction in this circuit is by electrons.
| Is This Answer Correct ? | 13 Yes | 5 No |
Post New Answer View All Answers
What is the universal motor?
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
l&t switch FN 63 handle position can we change
one split ac how can told of this ac which Tr tell me us
define the active power?
What is the maximum breakdown voltage of 11KVA and 66 KVA power line and how it is calculated?
what is the efficiency of thyristor
Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB
what is the formula for hv test for cable and circuit breaker..????
how give earthing conection to household equipment?
why do we put a transformer on soak before loading it
If oil and air can withstand a high MeV when used as an insulator in a transformer, what are the values of how high for each material?
What is notching in dc machine?
what is mean by PIR in circuitbreaker and give me detail of that?
1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?
