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## PLIC (Revision) ### SAQ's 1. **Define CMRR (Common-mode rejection ratio)** It is defined as the ratio of differential-mode gain to common-mode gain. $CMRR = \frac{|A_d|}{|A_c|}$ 2. **Define VSWR** It is defined as circuit power supply rejection which is expressed as the ratio of output noise by...

## PLIC (Revision) ### SAQ's 1. **Define CMRR (Common-mode rejection ratio)** It is defined as the ratio of differential-mode gain to common-mode gain. $CMRR = \frac{|A_d|}{|A_c|}$ 2. **Define VSWR** It is defined as circuit power supply rejection which is expressed as the ratio of output noise by input noise. 3. **What is multivibrator and its applications?** Multi-vibrator is an electronic device which is used to generate multiple frequencies. It is commonly used in timing circuits, delay circuits, oscillators etc. 4. **Define inverting and non-inverting Op-amp** Inverting Op-amp produces output signal which is out of phase when compared with input signal and non-inverting Op-amp which produces output which is in phase with input. Ideal characteristics of Op-amp: * Zero input current, infinite input impedance, infinite gain.