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CC Amplifier (Emitter Follower) : Exp. No.: Date

This document describes an experiment to determine the bandwidth, input and output impedances, voltage gain, current gain, and power gain of a CE amplifier circuit. The circuit uses a BC107 transistor with various resistors and capacitors. The procedure involves applying a 10V bias, sending a 1V test signal through the circuit while varying frequency, and measuring the output voltage. Data is tabulated and plotted on a graph to find bandwidth and calculate the various gains and impedances. The results provide values for the input impedance, output impedance, current gain, voltage gain, power gain, and bandwidth of the CE amplifier.

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Uday Kumar
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612 views3 pages

CC Amplifier (Emitter Follower) : Exp. No.: Date

This document describes an experiment to determine the bandwidth, input and output impedances, voltage gain, current gain, and power gain of a CE amplifier circuit. The circuit uses a BC107 transistor with various resistors and capacitors. The procedure involves applying a 10V bias, sending a 1V test signal through the circuit while varying frequency, and measuring the output voltage. Data is tabulated and plotted on a graph to find bandwidth and calculate the various gains and impedances. The results provide values for the input impedance, output impedance, current gain, voltage gain, power gain, and bandwidth of the CE amplifier.

Uploaded by

Uday Kumar
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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com
Exp. No.: Date:

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CC AMPLIFIER (EMITTER FOLLOWER)


AIM: To determine Bandwidth, Input & Output impedances, voltage gain, current

gain and Power gain of the CE Amplifier


APPARATUS :

S.No. 1. 2. 3. 4. 5.

Name of the Apparatus BC107 Power Supply Resistors () Capacitor CRO

Range 0-30V 100K, 39K, 27K, 2.2K & 1.5K 1F -

Quantity 1No. 1No. Each 1No. 1No. 1No.

CIRCUIT DIAGRAM:

+10V

27K 100k RS + 1uF + C B BC107 E VS Vi 39K 2.2K 1uF + -

RL 1.5K

VO

PROCEDURE:

1. Connect the circuit as shown in figure. 2. Apply the biasing voltage of 10 V. 3. Adjust the Signal generator voltage so as to get Vi =1V and measure Vs. 4. Vary the frequency of the signal generator from 100Hz to 1MHz, in steps and note down corresponding output voltage. 5. In the mid band range remove RL and note down the output which is VNL.

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Exp. No.:
6. Plot the frequency response and determine the bandwidth. 7. Calculate the input and output impedance in the mid band range using

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Date:

Ri =

Vi RS VS Vi

RO =

V NL V FL RL = VFL

8. Calculate the current gain(AI), voltage gain(AV) and power gain(AP) using

IO = Ii V IO = O = RO AI = AV = VO = Vi

Ii =

V s Vi = Rs

Power gain (AP) = AV. AI =

TABULATION : Vs=
S No. Frequency (Hz)

VNL =

Vi

(V)

Vo

(V)

Av =

Vo Vi

20 log Av

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Exp. No.:
S No. Frequency (Hz)

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Date:
Vi
(V)

Vo

(V)

Av =

Vo Vi

20 log Av

MODEL GRAPH:

3db 20 log Av

f1

f2

Bandwidth = f2 - f1 =

RESULTS:

Input impedance(Ri)

Output impedance(Ro) = Current gain(Ai) Voltage gain(Av) Power gain(AP) Bandwidth = = = =

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