Novel Instruments

Objectives:

Op-Amp characteristics i.e., Input offset voltage, slew rate, common mode rejection ratio (CMRR), Band width, Input bias current can be observed. Op-Amp linear applications i.e., voltage follower, Inverting amplifier, Non-inverting amplifier, variable voltage gain amplifier, Adder, substractor, Differential amplifier, Integrator, Differentiator can be observed. Op-Amp Non linear applications comparator, sine wave generator, square wave generator, Triangular wave generator can be observed. The other applications of Op-Amp can also be observed on this board.

Specifications :

Built in fixed DC supplies of 1V, 2V, 3V, +15V,-15V @ 250 mA.
Variable regulated power supply of 0-5V @ 250mA.
Four Op-Amps provided on board by using LM 324 IC, and a single Op-Amp using 741 IC.
Different values of capacitors and resistors, diodes to construct different circuits provided on board.
One 10kΩ potentiometer is provided on board.

Objectives:

To observe the sine, square and triangle wave outputs by using an operational amplifier.
With built in fixed power supplies of +15V, -15V @ 250mA.

Objectives:

To observe the frequency response of Band Pass filter that permits a range of medium frequencies to pass through while rejecting frequencies above and below this medium. To calculate 'Q' of this band pass filter.

Specifications :

Built in fixed power supplies +15V, -15V @ 250mA. Different values of capacitors, resistors and one 10kΩ potentiometer is provided to observe different responses of the filters.

Objectives:

To study the stop band of wide band filter which rejects a range of certain frequencies while allowing frequencies above and below this range to pass through with little or no attenuation.

Specifications :

Built in fixed power supplies +15V, -15V @ 250mA.
TL 084 IC is used as Op-amp.
Different values of resistors and capacitors are provided to vary the output frequencies.

Objectives:

To determine the range frequency of an RC phase - shift oscillator. To construct RC phase shift oscillator using Op-amp and to compare the phase shift networks and feed back voltages in this oscillator.

Specifications :

Built in fixed power supplies +12V, -12V @ 250mA.
741 IC is used as Op-amp.
Different values of capacitors are provided to vary the output frequencies.

Objectives:

To construct Schmitt trigger using Op-Amp and to observe that this produces a rectangular wave output from any type of input. And also to observe that any increase in amplitude of input has an effect on the width of the output wave form.

Specifications :

Built in fixed power supplies of +12V, -12V @ 250mA.
IC 741 and IC 555 are used.
Different values of resistors and capacitors are used to vary the output frequencies.

Objectives:

To observe the gain and frequency response and to calculate the cut-off frequency of a high pass filter using Op-Amp.

Specifications :

Built in fixed power supplies of +15V, -15V @ 250mA.
Additional Op-Amp is provided for external use.
Different values of resistors, capacitors and one 10KW potentiometer provided to vary the output waveforms.

Objectives:

To observe the gain and frequency response and to calculate the cut-off frequency of low pass filter using Op-Amp.

Specifications :

Built in fixed power supplies of +15V, -15V @ 250mA.
Additonal Op-Amp is provided for external use.
Different values of resistors, capacitors and one 10kΩ potentiometer provided to observe different output waveforms.

Objectives:

To construct a wein bridge oscillator and to determine the resistor ratio required to develop the correct degenerative feed back.

Specifications :

Built in fixed power supplies of +15V, -15V @ 250mA.
Additional Op-Amp is provided for external use.
Different values of resistors, capacitors and one 10kΩ potentiometer provided to vary different output frequencies.