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Early Effect

The effect of...

Question

The effect of decrease in base doping of the BJT, on emitter injection eficiency $γ$ , base transportation factor $β$ and the magnitude of the early voltage $V_{A}$ will be respectively.

A

Increase, increase, decrease

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B

Decrease, increase, increase

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C

Increase, decrease, decrease

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D

Decrease, decrease, increase

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Solution

The correct option is A Increase, increase, decrease
C

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Similar questions

Q. The effect of decrease in base doping of the BJT, on emitter injection eficiency

γ

, base transportation factor

β

and the magnitude of the early voltage

V_{A}

will be respectively.

Q. In a uniformly doped BJT, assume that

N_{E}, N_{B}

N_{C}

are the emitter, base and collector dopings in

a t o m s / c m^{3}

, respectively. If the emitter injection efficiency of the BJT is close to unity, which one of the following is TRUE?

Q. Match the following:
List-I
A. The current gain of a BJT will be increased
B. The current gain of a BJT will be reduced
C. The break-down voltage of a BJT will be reduced
List-II
1. The collector doping concentration is increased
2. The base width is reduced
3. The emitter doping concentration to base doping concentration ratio is reduced
4. The base doping concentration is increased keeping the ratio of the emitter doping concentration to base doping concentration constant
5. The collector doping concentration is reduced

Q. The intrinsic gain of a BJT with common emitter transistor having early voltage

V_{A} = 100

V is equal to _________kV/V. (Assume

V_{T} = 25 m V

)

Q. Consider the circuit shown in the figure below:

The value of base to emitter voltage

| V_{B E} |

= 0.7 V and the value of '

β

' for the transistor is equal to 30, then the value of emitter, base and collector voltages respectively are

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