Transistor

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Question

For a single transistor amplifier, the collector load is $R_{L} = 2 kΩ$ and input resistance $R_{i} = 1 kΩ$ . If the current gain is 50, then the voltage gain of the amplifier is

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Solution

For transistor voltage gain is $A_{v} = \frac{V_{O}}{V_{in}} = \frac{i_{c} R_{L}}{i_{b} R_{in}} = β \frac{R_{L}}{R_{in}} = 50 \frac{2 \times 10^{3}}{1 \times 10^{3}} = 100$

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