1800-150-456-789
FlagBACK
Flag Modern Physics> why there i sphase difference between inp...
question mark

why there i sphase difference between input and output voltage in transistor (180)

jay , 6 Years ago
Grade
anser 1 Answers
Arun

Last Activity: 6 Years ago

because to pursue with active mode or during the time of amplication of a signal BE & CB junctions need to be biased as forward & reverse respectively in case of npn CE transistor..

by increasing Vi, Ib goes higher.. Ic goes much higher i.e. β times Ib where β is amplification factor, having a large value.. results drop across Rc, Ic.Rc

by applying KVL we get an eqⁿ Vi = Vo - Ic.Rc or, Vo = Vi - Ic.Rc

to obtain AC characteristics by applying an AC biasing makes drop across Rc greater value than i/p voltage Vi because of β.Ib

∵ Ic.Rc > Vi ∴ Vo must be -ve.. or, Vo = -Vi

i.e. Vcb > Vbb results reverse biasing goes superior than forward biasing..

so why, a 180⁰ phase shift takes place..

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...

Other Related Questions on modern physics

question mark
A particle is projected in vertical plane such that after 5 seconds its velocity becomes horizontal. The maximum height attained by the projectile from point of projection is n3 m. The value of n is _______. (g = 10 m/s2)
modern physics
1 Answer Available

Last Activity: 2 Years ago

question mark
Two particles approach each other from very large distance as shown, . if the least separation between the particles is b, what is the speed of M in center of mass frame when particles are closest? (gravity negligible)
modern physics
0 Answer Available

Last Activity: 2 Years ago

question mark
Can the sum of two equal vectors be equal to either vector
modern physics
0 Answer Available

Last Activity: 2 Years ago

question mark
A nucleus X184 at rest emitt alpha particle With kinetic energy 9.0MeV. The product Nucleus is Y. The values of Binding energy per nucleon of alpha particle & Y differ by 1.5MeV. The values of Binding energy per nucleon of X & Y differ by (n÷230) MeV, then n is
modern physics
0 Answer Available

Last Activity: 2 Years ago

question mark
SUBJECT: PROBLEM BASED ON LINE DETECTION.Query: How to apply all the filters for line detection on the following piece of image (provided below)? Explain its Observations to comment on its results.
modern physics
0 Answer Available

Last Activity: 2 Years ago