For a CE-transistor amplifier, the audio signal voltage across the collector resistance of 2 k $straight capital omega$ is 2 V. Suppose the current amplification factor of the transistor is 100, find the input signal voltage and base current, if the base resistance is 1 kV.

Solution

Given,
Output voltage, V_o = 2 V
Output resistance, R_o = 2 k $straight capital omega$
Base resistance, R_i = 1 k $straight capital omega$
Current amplification factor, $straight beta space equals space 100$
Then input signal voltage is,
$space space space straight V subscript straight o over Vf space equals space R subscript o over R subscript f space cross times beta space space 2 over V subscript f space equals space 2 over 1 x 100 rightwards double arrow space V subscript i space equals space 10 space m V$
Now, collector current is,
I_C = $straight V subscript straight o over straight R subscript straight o space equals space 2 over 2 space equals space 1 space m A$
Therefore,
Base current, IB= $straight I subscript straight C over straight beta space equals space fraction numerator 1 space m A over denominator 100 end fraction equals 10 mu A$

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Wave Optics

For a CE-transistor amplifier, the audio signal voltage across the collector resistance of 2 k $straight capital omega$ is 2 V. Suppose the current amplification factor of the transistor is 100, find the input signal voltage and base current, if the base resistance is 1 kV.

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Wave Optics

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

Some More Questions From Wave Optics Chapter

Mock Test Series

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Entrance Exams Preparation

For a CE-transistor amplifier, the audio signal voltage across the collector resistance of 2 k $straight capital omega$ is 2 V. Suppose the current amplification factor of the transistor is 100, find the input signal voltage and base current, if the base resistance is 1 kV.