Home
Class 12
PHYSICS
Draw a simple circuit of a CE transistor...

Draw a simple circuit of a CE transistor amplifier. Explain its working. Show that the voltage gain, `A_V` of the amplifier is given by `A_v = - ( beta_(ac) R_L )/(r_i)` where` beta_(Ac)` is the current gain, `R_L` is the load resistance and` r_1` is the input resistance of the transistor. What is the significance of the negative sign in the expression for the voltage gain?

Answer

Step by step text solution for Draw a simple circuit of a CE transistor amplifier. Explain its working. Show that the voltage gain, A_V of the amplifier is given by A_v = - ( beta_(ac) R_L )/(r_i) where beta_(Ac) is the current gain, R_L is the load resistance and r_1 is the input resistance of the transistor. What is the significance of the negative sign in the expression for the voltage gain? by PHYSICS experts to help you in doubts & scoring excellent marks in Class 12 exams.

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SEMICONDUCTOR DEVICES

    MODERN PUBLICATION|Exercise EXERCISE|174 Videos
  • REFRACTION OF LIGHT

    MODERN PUBLICATION|Exercise EXERCISE|168 Videos
  • Solids

    MODERN PUBLICATION|Exercise EXERCISE|66 Videos

Similar Questions

Explore conceptually related problems

A transistor has a current gain of 30. If the collector resistance is 6kOmega , input resistance is 1kOmega calculate its voltage gain.

For a transistor amplifier, the collecor load resistance R_(L) = 2k ohm and the input resistance R_(i) = 1k ohm . If the current gain is 50, calculate voltage gain of the amplifier.

the input resistance of a comon-emitter amplifier is 2kOmega and a.c. current gain is 20. If the laod resistor used is 5kOmega calculate the transconductance of the transistor used.

Show that the average power transferred to an a.c. circuit is in general given by P= V_(r.m.s) I _(r.m.s) R//Z . Where R is the resistance in the circuit.

AC current gain for transistor in common amplifier is 20. If input and output resistance are 2k Omega and 5k Omega respectively, find voltage gain

AC current gain for transistor in common amplifier is 20. If input and output resistance are 2k Omega and 5k Omega respectively, find power gain

AC current gain for transistor in common emitter amplifier is 20. If input and output resistances are 2 k Omega and 5 K Omega respectively, find: Voltage gain

The current gain of a transistor in a common base arrangement is 0.95. Find the voltage gain and power gain if the load resistance of output circuit is 400kOmega and the input resistance is 200Omega.

Draw a circuit diagram for use of NPN trnasistor as an amplifier in common emitter configuration. The input resitance of transistor is 1000 Omega . On changing its base current by 10muA , the collector current is increased by 2mA. If the load resistance 5k Omega is used in the circuit, calculate the voltage gain of amplifier.

For a CE transistor amplifier, the audio signal voltage across the collector resistance of 2kOmega is 2V. Suppose the current amplification factor of the transistor is 100, find the input signal voltage andbase current, if the base resistance is 1kOmega .