OP-AMP

The ideal OP-AMP circuit shown in the Figure produces output voltage V_o = x when the Switch, S, is open. Which of the options represents the output voltage when S is closed?

Consider the circuit shown in the Figure with $V_i = 3$ V and $V_{CC} = 12$ V. Assume $V_{BE} = 0.7$ V and $\beta_{dc} = 99$ for the BJT. Which of the following options is the corr...

A circuit using an ideal OP-AMP is shown in the Figure. Which of the following options gives the correct value of the current Iₓ?

Consider an ideal OP-AMP circuit as shown in the Figure. The resistances $R_1 = R_2 = R_3 = R_4 = 50 \text{ k}\Omega$. The magnitude of the closed loop gain is ______. (rounded off...

The opamps in the circuit shown are ideal, but have saturation voltages of ±10 V. Assume that the initial inductor current is 0 A. The input voltage (Vi) is a triangular signal wit...

The $\frac{V_{OUT}}{V_{IN}}$ of the circuit shown below is

The circuit in the figure employs positive Feedback and is intended to generate sinusoidal oscillation. If at a frequency f$$_0$$, B(f)= $${{\Delta {V_f}(f)} \over {{V_0}(f)}} = {1...

An Amplifier using an Op-Amp with a Slew-Rate SR = V/$$\mu $$sec, has a gain of 40 dB. If this amplifier has to faith fully amplify sinsoidal signals from dc to 20 KHz. Without int...

The ideal Op-Amp has the following characteristics.

The most commonly used Amplifier in sample and hold circuit is

The first dominant pole encountered in the frequency response of a compensated op-amp is approximately at

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

An op-Amp is used as a zero-crossing detector. If maximum output available from the Op-Amp is $$ \pm 12\,\,{V_{p - p}}$$ and the slew rate of the Op-Amp is 12 $$V/\mu $$ sec then t...

The frequency compensation is used in OP-Amps to increase its___________

Two non-inverting amplifiers, one having a unity gain and other having a gain of twenty, are made using identical operational gain amplifier, the amplifier with gain twenty has