Question

write a coclusion for below statement

In summary, a typical Emitter Amplifier, the input is connected to the B-E junction, and the output from the EC terminal is taken. As it provides good current Gain and good voltage gain, it is commonly used as an amplifier circuit and is also known as an inverter amplifier as it gives 180 ° phase shift from input to output. First, when a bypass capacitor is attached, a common-emitter BJT amplifier with a voltage divider biasing configuration may cause a massive fall in voltage gain. Some of the formulae were used to calculate the voltage gain with a voltage divider biasing configuration of the common- emitter BJT amplifier.( ElProCus.2020)

There is a small difference between simulation and practical measurements. Due to the tolerance values of components, simulation results are not the same practical measurements. The maximum symmetrical swing is the maximum peak to peak output voltage, which is not clipped of saturated. The purpose of DC analysis is to bias the circuit in a fixed and stable operating point known as Qpoint. The purpose of AC analysis is to analyze the small-signal parameters such as voltage gain, current gain, and input impedance.

By default, the effect on the voltage gain if β value is significant, then the voltage gain is more since gain depends on gm, which itself depends on IC, gm=I_C/V_T. Based on the equation, I_C= βI_B. Suppose β is large, then IC also large. So gm is more. So the voltage gain is more.

Similarly, if the β value is small, then the voltage gain is less. Compared to the voltage gain when B is significant. In the CE amplifier, the output voltage is 180⁰ out of phase with respect to the input voltage. Therefore phase inversion takes place in the CE amplifier between input and output. By removing the CE capacitor, it gives rise to higher input impedance, much less distortion in the output, a higher bias point stability, and the gain is reduced.( Electronics Hub. 2020)

Answer 1