A transistor has a current gain of 50. In a CE amplifier circuit, the collector resistance is chosen as 5 kilo ohms and the input resistance is 1 kilo ohm. Calculate the output voltage if input voltage is 0.01 V.

Solution

Given,
Current gain, $β = 50$
Collector resistance, R_c = 5 $kΩ$ = 5000 $Ω$
Input resistance, R_B = 1 $kΩ$ = 1000 $Ω$
Input voltage, $v_{i} = 0.01 V$

Using the formula for voltage gain, we have

Voltage gain, $A_{v} = \frac{v_{0}}{v_{i}} = β \frac{R_{C}}{R_{B}}$

$\Rightarrow$ Output voltage,
$v_{0} = β \frac{R_{C}}{R_{B}} \times v_{i} = 50 \times \frac{5000}{1000} \times 0.01 = 2.5 V .$

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Wave Optics

A transistor has a current gain of 50. In a CE amplifier circuit, the collector resistance is chosen as 5 kilo ohms and the input resistance is 1 kilo ohm. Calculate the output voltage if input voltage is 0.01 V.

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