1.

How do we calculate the output voltage of a difference amplifier?(a) VO = -Ad × Vd + AC × VC(b) VO = -Ad × Vd – AC × VC(c) VO = Ad × Vd + AC × VC(d) VO = Ad × Vd – AC × VCI had been asked this question during an online interview.My question is from Transistor Difference Amplifiers topic in portion Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer»

Correct answer is (c) VO = Ad × Vd + AC × VC

To elaborate: The differential GAIN of a difference amplifier is defined as the gain obtained at the output SIGNAL with respect to the difference in the input signals applied. To calculate the output voltage of a difference amplifier we USE Ad × Vd + AC × VC. Where, Ad is the differential gain and AC and VC represent the common MODE gain.



Discussion

No Comment Found

Related InterviewSolutions