Linear ICs and Applications

Explain the multiplier circuit with schematic symbol.

Write a short notes on voltage controlled oscillator.

Write a short notes on voltage controlled oscillator.

Explain the operating principles of phase locked loop with relevant diagram.

Explain the 555 Timer circuit used as astable multivibrator with relevant waveforms.

Calculate the resistances of  for the LM217 voltage regulator to produce an output voltage of 9 V. .

Explain the operation of the 723 integrated circuit voltage regulator contains a reference voltage sources  an error amplifier a series pass transistor  and a current limiting transistor.

Explain the following terms Ripple rejection briefly.

Explain the following terms Load regulation.

Explain the following terms such as Line regulation.

Design a first order high pass active filter circuit to have a cut off frequency of 5 kHz. Use an LM108 op amp and estimate the highest frequency can be passed.

Explain the operation of the first order active low pass filter circuit with frequency response characteristics using operational amplifier.

Explain the operation of the Astable multivibrator circuit using operational amplifier with relevant waveforms.

Using a BIFET op-amp with a supply of 12V, design a wein bridge oscillator to have and O/P frequency of 15 kHz.

Explain the operation of the phase-shift oscillator circuit with relevant waveforms.

What is CMRR in an operational amplifier? A 741 op-amp is used in a non inverting amplifier with a voltage gain of 50. Calculate the typical output voltage that would result from a common mode input with a peak level of 100 mV.

Design a non saturating precision half wave rectifier, which produce a 2 V peak output from a sinewave input with a peak value of 0.5 V and frequency of 1 MHz. Use a bipolar op-amp with a supply voltage of 15V.

Explain the instrumentation amplifier with differential input/output which accepts a differential input voltage and amplifies it to produce a differential output using op amps.

Explain the 'current amplifier' circuit using operational amplifier.

Explain the 'circuit stability precautions' for the operational amplifier using the manufacturer's recommended compensating components.

Explain the 'circuit stability precautions' for the operational amplifier using the manufacturer's recommended compensating components.

Explain briefly about input impedance modification  technique of frequency compensation with circuit diagram

Calculate the maximum peak value of sine wave output voltage that can be produced by the amplifier part  equation and the op-amp is a 741 and fa is 8 kHz.

Determine the maximum peak value of the sinusoidal output voltage that will allow the 741 voltage followed circuit to operate at the 800 kHz unity-gain cut off frequency.

Calculate the slew rate limited cut off frequency for a voltage follower circuit using a 741 op-amp if the peak of sinewave output is to be 5V.

Explain about capacitor coupled voltage follower using a single polarity supply, with circuit diagram.

The inverting designed  is to be capacitor coupled and to have a signal frequency range of 10 Hz to 1 KHz. If the load resistance is  Calculate the required capacitor values.

Explain about the High input impedance capacitor Coupled voltage follower circuit, with relevant equations.

Design an inverting amplifier using a 741 op-amp. The voltage gain is to be 50 and the output voltage amplitude is to be 2.5 V.

Design a non-inverting direct coupled amplifier using a bipolar op amp. Write the circuit diagram.