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Introduction:

Abstract

The cathode ray Oscilloscope plays a very important role in the laboratories, for instance it is used to measure frequency and voltage of a signal it is equally used for study current fluctuation in electric power supply the cathode ray oscilloscope is made up of three major part, they are the cathode ray tube, which is the major integral part A the Oscilloscope also the other important[1 parts of the Oscilloscope is the power supply unit and the vertical as well as horizontal amplifier. Some of the cathode ray oscillioscope are calibrated manually while some are already calibrated by the manufacturers. The subpart of the oscilloscope which include Cathode Ray Tube (CRT) is made of three (3) major parts namely the electron gun which produces electron before acceleration and the second sub part of the instrument in the deflecting plates which helps to deflect the electron towards the screen where it is seen. This cathode Ray Oscilloscope works in the principle that the signal to be displayed is amplified by the vertical amplifier and applied to the vertical deflection plates of the CRT, a portion of the signal in the vertical amplifier is applied to the sweep trigger as a triggering signal. Then the sweep trigger generates a pulse coincident with a selected point in the cycle of the triggering signal. This pulse turns on the sweep generator. Initiating the saw-tooth wave form.

Table of Content

Title Page i

Certification ii

Dedication iii

Acknowledge iv

Abstract. v

Table of Contents vi



CHAPTER ONE

1.0 Introduction 1

1.1 The Background Review of the Cathode Ray Oscilloscope 1

1.2 Limitations of the Study 7

1.3 Objective of the study 8

1.4 Definition of Terms 8



CHAPTER TWO

2.1 Mode of operation of Cathode Ray Oscilloscope 9

2.2 Scheme Diagram of CRO 10

2.3 The Parts of Cathode Ray Oscilloscope (CRO) 10

2.4 Schematic Diagram of Cathode Ray Tube 11

2.4.1 The pars of Cathode Ray (CRT) 12

2.4.2 Vertical Amplifier 13

2.4.3 Delay Line 14

2.4.4 The Power Supply Section 15

2.4.5 Time Base Generator 15

2.4.6 Horizontal Sweep Section 15



CHAPTER THREE

3.0 Calibration and setting up of cathode Ray

Oscillioscope 17

3.1 Setting of Cathode Ray Oscilloscope 17

3.2 The Summary for setting up CRO 23

3.3 Calibration of Cathode Ray Oscilloscope 24



CHAPTER FOUR

4.0 Application of Cathode Ray Oscilloscope in

Laboratory 25

4.1 CRO as a voltmeter 25

4.2 Frequency Measurement with CRO 29

4.3 Measurement of Voltage and Time Period 30





CHAPTER FIVE

5.0 Summary, Conclusion and Recommendation 32

5.1 Summary 32

5.2 Conclusion 33

5.3 Recommendation 34

REFERENCES 35

Introduction

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