BJT amplifier V1 10V Signal frequency 1700Hz Signal amplitu

BJT amplifier

V1 = 10V

Signal frequency 1700Hz

Signal amplitude = 150mV

>Calculate all DC bias voltages and currents.with the switch open and then closed.

>Calculate the voltage gain and phase shift.

>Calculate the reduction in gain when RL and C3 are removed.

Solution

to caluculte voltage gain

use this formula

Av= vout/vin

The gain of an amplifier is a measure of the \"Amplification\" of an amplifier, i.e. how much it increases the amplitude of a signal. More precisely it is the ratio of the output signal amplitude to the input signal amplitude, and is given the symbol \"A\". It can be calculated for voltage (A_v), current (A_i) or power (A_p), When the subscript letter after the A is in lower case this refers to small signal conditions, and when the subscript is in capitals it refers to DC conditions. The gain or amplification for the three differnt types of amplifiers can be described using the approp formula