In a series regulated power supply circuit, the voltage gain A_v of the ‘pass’ transistor satisfies the condition:

One input terminal of high gain comparator circuit is connected to ground and a sinusoidal voltage is applied to the other input. The output of comparator will be

In a shunt-shunt negative feedback Amplifier, as compared to the basic Amplifier,

In a differential Amplifier, CMRR can be improved by using an increased