Pulse Digital Circuits

Pulse Digital Circuits -
RC PHASE SHIFT OSCILLATOR:NI-025

Objectives: To determine the range frequency of an RC phase shift oscillator.
Specifications :
Built in fixed power supply of +12V @ 250mA.
Different values of capacitors are provided on board to vary the output frequency.
Each element of RC network shifts the phase by 600.
WEIN BRIDGE OSCILLATOR:NI-026
Objectives: To determine the range frequency of wein bridge oscillator.

Specifications :
Built in fixed power supply of +12V @ 250 mA.
Different values of capacitors are provided on board to vary the output frequency.
HARTLEY OSCILLATOR:NI-027

Objectives: To determine the range frequency of hartley oscillator.

Specifications :
Built in fixed power supply of +12V @ 250mA.
Different values of capacitors are provided on board to vary the output frequency.
COLPITTS OSCILLATOR:NI-028
Objectives: To determine the range frequency of Colpitts Oscillator.

Specifications :
Built in fixed power supply of +12V @ 250mA.
Different values of capacitors are provided to vary the output frequency.
UJT RELAXATION OSCILLATOR:NI-029
Objectives: To determine the peak voltage (VP) and valley voltage (VV) of a relaxation oscillator and to observe the output frequency.

Specifications :
Built in fixed power supply of +12V @ 250mA.
Built in variable power supply of 0-12V @ 250 mA.
Different values of resistors and capacitors to vary the output frequency.
VOLTAGE CONTROLLED OSCILLATOR USING 566 IC:NI-0185

Objectives: To construct voltage controlled oscillator and to verify the frequency variations in accordance with input voltage.
To observe the applications of VCO 566 IC as a +ve and -ve pulse generator.

Specifications :
Built in fixed power supply of +12V @ 250mA.
VCO applications in ramp generation can be performed with these circuit.
Different values of resistors and capacitors are provided to vary the control voltage and output frequency.
CLIPPING AND CLAMPING CIRCUITS:NI-037
Objectives: To observe that the reference voltage is used to control the clipping and clamping levels of output of the given input wave.

Specifications :
Two variable power supplies of 0-10V @ 250mA.
SCHMITT TRIGGER USING TRANSISTORS:NI-076

Objectives: To observe that Schmitt trigger produces a rectangular wave output from a sine input. And to observe that any increase in amplitude of input sine wave has an effect on the width of the output wave form.

Specifications :
Built in fixed power supply +12V @ 250mA.
TRANSISTOR AS A SWITCH:NI-078
Objectives: To study the switching characteristics of a transistor rise time, fall time, on/off time, delay time.

Specifications :
Built in fixed power supply +12V @ 250mA.
LED is given to observe on/off conditions.
ASTABLE MULTIVIBRATOR USING 555 IC:NI–1004
Objectives: To observe that astable multivibrator is free running square wave generator.

Specifications :
Built in fixed power supply +12V @ 250mA.
Different values of resistors and capacitors given to vary the output waveform.
One external 555 configuration with IC is given on board.
    
MONOSTABLE MULTIVIBRATOR USING 555 IC:NI-1019
Objectives: To observe that monostable is a one-shot multi-vibrator and is triggered by a sharp pulse, obtained by differentiating a square wave and also to observe that it produces one output pulse for each input pulse.

Specifications :
Built in fixed power suplies +12V @ 250mA.
Different values of resistors, capacitors and one 10KW Potentiometer provided to vary the output frequencies.
MONOSTABLE MULTIVIBRATOR USING TRANSISTORS:NI–1008

Objectives: To observe that monostable is a one-shot multivibrator and is trigged by sharp pulse, obtained by differentiating a square-wave. And to observe that it produces one output pulse for each input pulse.
With Built in fixed power supplies of +12V, -12V @ 250 mA.
» BISTABLE MULTIVIBRATORS USING TRANSISTORS:NI-1009

Objectives: To observe that bistable is a flip-flop and it is stable either in 'I' or 'O' state, till it is triggered into the other state. And it can also be used as divide-by-two counter.
With Built in fixed power supplies of +12V, -12V @ 250mA.
    
BOOTSTRAP SWEEP GENERATOR CIRCUIT:NI-1010
Objectives:, To construct boot strap voltage sweep generator and to calculate delay time, sweep time and also to observe the output frequency.
With Built in fixed power supplies of +12V @ 250mA.
ASTABLE MULTIVIBRATORS USING TRANSISTORS:NI-1015
Objectives: To observe that astable multivibrator is a free running square wave generator.

Specifications :
Built in a fixed power supply of +12V @ 250mA.
Different capacitors are provided to vary output frequency.
MULTIVIBRATORS (Three in One):NI-030
Objectives: The purpose of this experiment is to observe the operation and characteristics of the astable multivibrator, monostable multivibrator and bistable multivibrator using transistors.

Specifications :
Fixed DC regulated power supply +12V @ 250mA.
Output states can be observed by LED's provided on board.
Two NPN transistors are used.
CRYSTAL OSCILLATOR:NI-1080
Objectives: To study the working of crystal oscillator.

Specifications :
Built in fixed power supply of +5V.
Piezoelectric crystal is provided on board.
OPERATIONAL AMPLIFIER TRAINER:NI-1070

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.
    
FUNCTION GENERATOR USING OP-AMP:NI–1002
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.
ACTIVE BANDPASS FILTER USING OP-AMP:NI–1036
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.
ACTIVE BAND-REJECT FILTER (Wide band):NI–1082

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.
PHASE SHIFT OSCILLATOR USING OP-AMP:NI–1086
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.
SCHMITT TRIGGER USING 555 IC AND OP-AMP:NI-1084

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.
HIGH PASS FILTER USING OP_AMP:NI–1034
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.
LOW PASS FILTER USING OP_AMP:NI–1035
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.
WEIN BRIDGE OSCILLATOR USING OP-AMP:NI–1043

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.