मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

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
Advertisements

प्रश्न

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.

संख्यात्मक
Advertisements

उत्तर

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.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 16: Semiconductor Devices - Exercises [पृष्ठ ३६४]

APPEARS IN

बालभारती Physics [English] Standard 12 Maharashtra State Board
पाठ 16 Semiconductor Devices
Exercises | Q 20. | पृष्ठ ३६४

संबंधित प्रश्‍न

Why are the emitter, the base, and the collector of a BJT doped differently?


In a common base configuration, the transistor has an emitter current of 10 mA and a collector current of 9.8 mA. The value of base current is ______ 


In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is ______ 


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 ____________.


Assuming VCEsat = 0.2 V and β = 50, find the minimum base current (IB) required to drive the transistor given in the figure to saturation.


A transistor has a voltage gain A. If the amount βA of its output is applied to the input of the transistor, then the transistor becomes oscillator, when ______.


A common emitter amplifier is designed with n-p-n transistor (α = 0.99). The input impedance is 1 kΩ and the load is 10 kΩ. The voltage gain will be ______


In an npn transistor, the base current is 100 µA and the collector current is 10 mA. The emitter current is ______.


In switching circuit, transistor is in ON state, values of IE and lB are 10 mA and 0.8 mA respectively and RL is 2 k`Omega`. If VCE is 7.6 V, then VCC is ____________.


In case of npn transistors, the collector current is always less than the emitter current because ______.


In a silicon transistor, a change of 7.89 mA in the emitter current if produces a change of 7.8 mA in the collector current, then the base current must change by ____________.


In a transistor, the thickness of the base region ____________.


In transistor amplifier, base-emitter junction is forward biased and collector emitter junction is reverse biased. The current gain is ______.


In the case of transistor, the relation between current ratios αdc and βdc is ______.


In common emitter amplifier, a change of 0.2 mA in the base current causes a change of 5 mA in the collector current. If input resistance is 2K `Omega` and voltage gain is 75, the load resistance used in the circuit is ______.


In the common-emitter configuration of a transistor, the current gain is more than 1 because [lb, le, and lc are base, emitter, and collector currents respectively] ______


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 ______. 


For a transistor,  αdc and βdc are the current ratios, then the value of `(beta_"dc"-delta_"dc")/(alpha_"dc".beta_"dc")` 


A common emitter amplifier circuit built using an n-p-n transistor is shown in the figure. Its DC current gain is 300, RC = 4 kΩ and VCC = 20 V. What is the minimum base current for VCE to reach saturation?

 


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 ______.


Explain the output characteristics of common emitter configuration of n-p-n transistor.


Define α.


Define β


When an n-p-n junction transistor is used as an amplifier in common emitter mode, ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×