Advertisements
Advertisements
Question
In a common-base connection, the emitter current is 6.28 mA and the collector current is 6.20 mA. Determine the common-base DC current gain.
Advertisements
Solution
Data: The emitter current is IE = 6.28 mA.
The collector current is IC = 6.20 mA
`alpha_(dc) = I_C/I_E`
⇒ `alpha = 6.20/6.28`
⇒ `alpha = 0.987`
The common base DC current gain is 0.987.
RELATED QUESTIONS
In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is ______
Draw the circuit symbol of the PNP transistor.
Draw the circuit symbol for NPN and PNP transistors. What is the difference in the Emitter, Base, and Collector regions of a transistor?
With the help of a neat diagram, explain the working of the npn transistor?
Draw the circuit diagram to study the characteristic of the transistor in common emitter mode. Draw the input and output characteristics.
The principle based on which a solar cell operates is ____________.
Explain the current flow in an NPN transistor.
Explain the need for a feedback circuit in a transistor oscillator.
Transistor functions as a switch. Explain.
A transistor having α = 0.8 is connected in common emitter configuration. When the base current changes by 6 mA, then the change in collector current is ______.
For a transistor, the current ratio 'βdc' is defined as the ratio of ______.
In the symbol for a transistor, the arrow head points in the direction of the ____________.
In the study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98 then the ratio of collector current to base current will be ______.
In case of npn transistors, the collector current is always less than the emitter current because ______.
A transistor when connected in common emitter mode has a ____________.
In a transistor, the thickness of the base region ____________.
In a study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98. The collector current is 3mA, then base current will be approximately ______.
A transistor is used as a common emitter amplifier with a load resistance 2 KΩ. The input resistance is 150 Ω. Base current is changed by 20 µA which results in a change in collector current by 1.5 mA. The voltage gain of the amplifier is ______.
A conducting wire has length 'L1' and diameter 'd1'. After stretching the same wire length becomes 'L2' and diameter 'd2' The ratio of resistances before and after stretching is ______.
The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the CE configuration is 1K Ω. The peak value for an AC input voltage of 0.01 V of collector current is ______.
The current amplification factor for a transistor in its common emitter mode is 50. The current amplification factor in the common base mode of the transistor is ______.
The collector current in a common-emitter transistor amplifier is 4 mA. When the base current is increased by 20 µA, the collector current increases to 6 mA. The current gain is ______.
How is a transistor biased for operating it as amplifier?
Explain the output characteristics of common emitter configuration of n-p-n transistor.
When an n-p-n junction transistor is used as an amplifier in common emitter mode, ______.
In the case of constants ‘α’ and ‘β’ of a transistor ______.
