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# The input signal given to a CE amplifier

The input signal given to a CE amplifier having a voltage gain of 150 is
$V_{i} = 2\cos \left ( 15\:t+\frac{\pi }{3} \right )$. The corresponding output signal will be :

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Input signal of a CE amplifier, $V_{i} = 2\cos \left ( 15\:t+\frac{\pi }{3} \right )$

Voltage gain = 150

As CE amplifier give phase difference of $\pi$ between input and output signals,

so $A_{v} = \frac{V_{0}}{V_{i}} \Rightarrow V_{0} = A_{v}\cdot V_{i}$

$V_{0} = 150 \times 2\cos \left ( 15\:t+\frac{\pi }{3} + \pi \right )$

$V_{0} = 300\cos \left ( 15\:t+\frac{4\pi }{3} \right )$

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