Electronics - Bipolar Junction Transistors (BJT) - Discussion
Discussion Forum : Bipolar Junction Transistors (BJT) - General Questions (Q.No. 11)
11.
The C-B configuration is used to provide which type of gain?
Discussion:
13 comments Page 1 of 2.
Junpher said:
1 decade ago
Commonly c-b is used for voltage or supply and the E is use wally tap in the ground or negative.
DESI said:
1 decade ago
In Cb Ai=1,but the voltage is more,hence voltage gain.
Sukhpreet said:
1 decade ago
in CB configuration voltage gain is about 150 and in CE voltage gain is 500.. So according to this CE confi. should be used for voltage gain.. Why here CB??
Ankit katare said:
1 decade ago
Because in c-b configuration has high voltage gain.
Arpit Gaur said:
1 decade ago
The answer of this absolutely A, since in c-b config. The o/p current in not so large,
Therefore acc. To the o/p equation:.
Vc = Vcc - IcRc.
The o/p voltage Vc is large and hence the voltage gain is also large.
Therefore acc. To the o/p equation:.
Vc = Vcc - IcRc.
The o/p voltage Vc is large and hence the voltage gain is also large.
Saurabh verma said:
1 decade ago
CB is used as current buffer, very little change comes in current, but larger change in voltage at o/p, so it is used for voltage gain. CC used as current amplifier, because there is larger change in o/p current and not very large change in o/p voltage.
Irfan said:
1 decade ago
Common base (C.B) Configuration used for high input resistance. Not for voltage gain. For voltage gain we used C.E configuration.
Obeng Samuel said:
1 decade ago
The collector supply voltage which is equal to the dc supply voltage. For voltage gain, the configuration should be in CB.
Vekatesh said:
1 decade ago
It is for current gain and not for voltage gain.
Swagatika sahu said:
1 decade ago
Common collector is used as voltage follower/voltage buffer circuit as Av=1.
Common base is used as voltage amplification circuit as Av=600 and Ai=1, current follower circuit.
In common emitter Av=-200 and Ai=-100..It offers very high power gain.
Common base is used as voltage amplification circuit as Av=600 and Ai=1, current follower circuit.
In common emitter Av=-200 and Ai=-100..It offers very high power gain.
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