how can you prove that in CE configuration a transistor has 180 degree phase s

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how can you prove that in CE configuration a transistor has
180 degree phase shifted output

Question Posted / rajkiranraj2

5 Answers
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how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / girish

Apply kvl to ce loop
Vcc=IcRc+Vo
when Ib increases, Ic=beta x Ib increases which increses
IcRc.
therefore Vo decreses to as Vcc is constant..
Thus when Ib is increasing(Positive half cycle) output
decreses(goes negative) and when Ib decreses output V0
increses..producing 180 phase shift between input and output

Is This Answer Correct ?

21 Yes

5 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / nandu202

Before reading my answer,i ask u 2 refer transistor biasing
circuit.

If u look at the o/p:
o/p eqn. can be written as:
Vce=Vcc-(Ic*Re);

As i/p increases,Ib(which wil b the i/p in CE Mode wil
increase so Ic increases so drop across Re increases
resulting in decreased Vce.

If u take a sinusoidal i/p,Correspondingly u add all d
points u wil get a 180 phase shift

Is This Answer Correct ?

15 Yes

7 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / himanshu

see ans in book

Is This Answer Correct ?

9 Yes

5 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / sana

as Vo=Vcc-IcRc
Vcc= constant so we can say that Vo iz directly proportional to IcRc. now when Vb(base voltage) increase Ib increase so Ic increase and voltage drop across Rc increase so Vo decrease....... producing 180 phase shift

Is This Answer Correct ?

5 Yes

2 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / jyothish

In CE configuration we are plotting the output graph currosponding to the input current Ib. So if the input current increases it increases the collector current Ic. But increase in Ic reduces the voltage drop across the collector and emitter terminals(Vce). So at increased input current a reduced output voltage is occured. So output has 180 Degree phase shift.

Is This Answer Correct ?

3 Yes

0 No

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