Amplifiers » Exercise - 149. The non-linear distortion of an amplifier is D without feedback. The amplifier has an open-loop voltage gain of Av and feedback fraction is mv. With negative voltage feedback, the non-linear distortion will be ....... (a) D (1 + Av mv) (b) D (1 - Av mv) (c) (1 + A m)/D (d) 1 D/(1 + Avmv)
Amplifiers » Exercise - 252. In order to obtain good gain stability in a negative voltage feedback amplifier (Av = voltage gain without feedback ; mv = feedback fraction), ............. (a) Av mv = 1 (b) Av mv >> 1 (c) Av mv < 1 (d) none of the above
Amplifiers » Exercise - 140. In the expression for voltage gain with negative voltage feedback, the term 1 + Am mv is known as ........ (a) gain factor (b) feedback factor (c) sacrifice factor (d) none of the above
Tags: amplifiers, voltage, gain, feedback, exercise, negative, mv, electronics, engineering
Amplifiers » Exercise - 123. If the feedback fraction of an amplifier is 0.01, then voltage gain with negative voltage feedback is approximately ....... (a) 500 (b) 100 (c) 1000 (d) 5000
Tags: amplifiers, feedback, voltage, exercise, fraction, gain, negative, electronics, engineering
Amplifiers » Exercise - 138. The approximate voltage gain of an amplifier with negative voltage feedback (feedback fraction being mv) is ......... (a) 1/mv (b) mv (c) 1 /(1 + mv) (d) 1 - mv
Amplifiers » Exercise - 149. The non-linear distortion of an amplifier is D without feedback. The amplifier has an open-loop voltage gain of Av and feedback fraction is mv. With negative voltage feedback, the non-linear distortion will be ....... (a) D (1 + Av mv) (b) D (1 - Av mv) (c) (1 + A m)/D (d) 1 D/(1 + Avmv)