Question

The AC signal measured at the base of a common emitter is 600mA. The output signal voltage measured at the collector is 2,5V. Calculate tye voltage gain of the amplifier

Answer 1

To calculate the voltage gain of a common emitter amplifier, you can use the formula:

\[
\text{Voltage Gain (A_v)} = \frac{V_{out}}{V_{in}}
\]

where:
- \( V_{out} \) is the output voltage measured at the collector,
- \( V_{in} \) is the input voltage measured at the base.

From your provided information:
- The output voltage \( V_{out} = 2.5\,V \).
- The input current \( I_{in} = 600\,mA \) at the base is not directly used to calculate the voltage gain. What we need is the input voltage, \( V_{in} \), at the base.

If you don't have the value of \( V_{in} \) (the voltage at the base), then we cannot calculate the voltage gain \( A_v \) directly. The current of 600mA does not help us unless we know the base-emitter voltage or resistance to determine \( V_{in} \).

Please provide \( V_{in} \) or any additional information on the circuit to proceed with the calculation.