Hi
I need help with this problem and how to go about doing it.
An inverting amplifier of closed loop gain of -15 is designed with an assumption that the op amp is ideal. Then the inverting amplifier is connected to a source 10 mV peak sinusoidal signal whose source resistance is 100 kΩ.
i) If R1 of the inverting amplifier is 10 k, draw the equivalent circuit of the input of the inverting amplifier with the source connected and determine the input voltage that appears at the input of the amplifier. What has happened to the source signal? [6]
ii) Draw the circuit diagram of the inverting amplifier with the source signal connected and carry out a full analysis to determine the closed loop voltage gain (Vo/Vs) of the inverting amplifier system. [8]
iii) Explain what can be done to remove the effects in part i) and part ii) on the inverting amplifier. Draw the resulting circuit diagram. [5]
Jason
I need help with this problem and how to go about doing it.
An inverting amplifier of closed loop gain of -15 is designed with an assumption that the op amp is ideal. Then the inverting amplifier is connected to a source 10 mV peak sinusoidal signal whose source resistance is 100 kΩ.
i) If R1 of the inverting amplifier is 10 k, draw the equivalent circuit of the input of the inverting amplifier with the source connected and determine the input voltage that appears at the input of the amplifier. What has happened to the source signal? [6]
ii) Draw the circuit diagram of the inverting amplifier with the source signal connected and carry out a full analysis to determine the closed loop voltage gain (Vo/Vs) of the inverting amplifier system. [8]
iii) Explain what can be done to remove the effects in part i) and part ii) on the inverting amplifier. Draw the resulting circuit diagram. [5]
Jason