The document describes an experiment to design and test a function generator using the IC 8038 chip. The aim is to observe output waveforms and measure output frequency. The IC 8038 can generate triangular, square, sine, pulse and saw tooth waveforms and allows control of frequency, duty cycle, and distortion. The operation is based on charging and discharging a capacitor using current generators. The circuit produces waveforms from 20Hz to 20kHz. The procedure involves making connections, powering on, observing waveforms on an oscilloscope, and noting readings. Observations of the sine, triangular, and square wave outputs both theoretically and practically are to be recorded.

1. KCES’s COEIT, Jalgaon
Department of Electronics and Telecommunication
Subject In-Charge: Asst. Prof. C. S. Thombre (EXTC)
Aim:- Design and test function generator using IC 8038.
a. observe output waveforms
b. measure output frequency
Apparatus: Kit, CRO, CRO probes, connecting wires etc
Theory:
The ICL8038 is a function generator chip (diagram shown below), able of generating triangular, square,
sine, pulse and saw tooth waveforms. From these sinusoidal, square & triangular wave forms can be made
simultaneously. There is the option to control the parameters like frequency, duty cycle and distortion of
these functions.
Diagram: function generator IC 8038
ACADEMIC YEAR: 20 - 20 SEMISTER: I / II
Name of student
Grade
Roll No Date of Performance
Class Date of Completion
Subject
Experiment No Signature

2. KCES’s COEIT, Jalgaon
Department of Electronics and Telecommunication
Subject In-Charge: Asst. Prof. C. S. Thombre (EXTC)
The operation of IC8038 is based upon charging and discharging of a grounded capacitor whose charging
and discharging rates are controlled by current generators IA and IB respectively. This is the best function
generator circuit for a beginner to start with and is of course a must on the work bench of an electronics
hobbyist. The circuit here is designed to produce waveforms from 20Hz to 2o kHz. The ICL 8038 has to be
operated from a dual power supply.
Procedure:-
1. Make the connection as shown in fig..
2. Switch on the power supply.
3. Connect the CRO at output terminal of kit.
4. Observe the waveform on CRO.Vary the pot & get perfect sine wave.
5. Then note down the readings of this waveforms & draw on the graph paper.
Observations:-
Output Theoretically Practically
Sine wave Vop=0.2Vcc= Vop
Ton
Toff
Triangular wave Vop=0.3Vcc= Vop
Ton
Toff
Square wave Vop=Vcc= Vop
Ton
Toff
Conclusion:-