AEC (B-TECH Electronics and Communication Engineering 5th)

Section-A

SINGLE AND MULTISTAGE AMPLIFIERS:

Classification of amplifiers, distortion in amplifiers, frequency response of an amplifier,

step response of an amplifier, pass-band of cascaded stages, RC-coupled amplifier, low

frequency response of RC coupled stage, effect of an emitter bypass capacitor on low

Frequency response, multistage CE amplifier .

FEEDBACK AMPLIFIERS :

Feedback concept, transfer gain with feedback, general characteristics of negative

feedback amplifiers, input resistance, output resistance, voltage series feedback, current

series feedback, current shunt feedback, voltage shunt feedback.

Section-B

OSCILLATORS:

Sinusoidal oscillators, Barkhausen criteria, R-C phase shift oscillator, general form of

oscillator circuit, wien-bridge oscillator, crystal oscillator.

Section-C

POWER AMPLIFIERS:

Class A, B, and C operations; Class A large signal amplifiers, higher order harmonic

distortion, efficiency, transformer coupled power amplifier, class B amplifier : efficiency

& distortion; class A and class B push-pull amplifiers; class C power amplifier.

OPERATIONAL AMPLIFIERS :

Ideal and practical operational amplifiers, inverting and non-inverting amplifier,

differential amplifier, emitter coupled differential amplifier, transfer characteristics of a

differential amplifier, offset error : voltage and current, common mode rejection ratio

(CMRR) .

Section-D

LINEAR APPLICATIONS OF OPERATIONAL AMPLIFIERS :

Scale changer, phase shifter, adder, voltage to current converter, current to voltage

converter, DC voltage follower, Bridge amplifier, AC coupled amplifier, AC voltage

follower, Integrator, differentiator.

NON-LINEAR APPLICATIONS OF OPERATIONAL AMPLIFIERS :

Comparators, sample & hold circuits, Logarithmic amplifier, anti-log amplifier,

logarithmic multiplier, waveform generators , Miller & Bootstrap sweep generators,

regenerative comparator (Schmitt Trigger), multivibrators, ADC.