Lcf Meter 72541j

APPROVAL SHEET

This is to certify that we have supervised the preparation of and read the thesis paper prepared by Edgardo C. Bedrijo Jr., Mario C. Borromeo Jr., Jestoni V. Imperial, Genel S. Pornillos entitled Improved Digital Inductance, Capacitance, and Frequency Meter and that the said paper has been submitted for final examination by the Oral Examination Committee.

ENGR. EDGARDO N. MARTINEZ JR. Academe Adviser

As of the Oral Examination Committee, we certify that we have examined this paper and hereby recommend that it be accepted as fulfilment of the thesis requirement for the Degree Bachelor of Science in Electronics Engineering. ____________________________ ENGR. SHEILDON GO 1

_______________________________ ENGR. Ma. ESPER G. CERVANTES 2

____________________________________ ENGR. JAMES FRANCIS B. AGUILAR Committee Chair This thesis paper is hereby approved and accepted by the College of Engineering and Architecture as fulfillment of the thesis requirement for the Degree Bachelor of Science in Electronics Engineering.

Leon B. Palmiano IV Dean, Engineering and Architecture

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ACKNOWLEDGEMENT The researchers extend their deepest gratitude and sincerest appreciation to the following person who in one way or another contributed in the completion of their project: Engr. Edgardo N. Martinez Jr., Adviser, who had been with them from beginning until end of the project, for his continual guidance and that pushed the researcher to give their best; Sir Emmanuel Ventura, EE lab coordinator, and Julip Cesar Vega, EE lab Student Assistant, for lending the components needed and allowing them to use laboratory equipment; ECE mentors for their important inputs in this project; Engr. James Francis Aguilar, Engr. Roy Tipones, Engr. Maria Esper Cervantes, Engr. Francis German Nano, Engr. Sheildon Go, ists, for their comments and suggestions that improved this study; Tyrone, Carina, Jeffrey, Jomerey, Jonathan, Arjay, and Jett, their classmates, for their unending and belief to the researchers; Their countless friends for the inspiration and boost that gave the authors strength to continue; Their beloved families, for their unconditional love, moral and financial that motivated the authors to strive for excellence; and above all, to the Lord Almighty for His blessings and guidance.

Ed, Mario, Genel, & Ton 3

ABSTRACT

This study constructed a device that measures the inductance, capacitance, and frequency of a specific component and circuit. It has a measurement range of 100uH to 1H for inductance, 560pF to 100uF for capacitance, and up to 1 MHz for frequency measurement. It measures less than five percentage error of the component’s value. This study aimed to lessen the time to find and calculate the value of inductors, capacitors, and frequency of a circuit. The device is based on the LCF Meter made by Aguilar (et al.) of BS ECE batch 2006 of this university and aimed to improve it. This can also be a good alternative to expensive commercially available LCF meters. The study focused on measuring non-polarized capacitor such as film, mylar, and ceramic capacitors and different kinds of inductor such as resistor type and power inductors. It also measures frequency of sine, triangular and square waves. After several tests, the device showed accuracy and reliability on measuring inductance, capacitance, and frequency on each specific range. As compared to the LCF Meter made by Aguilar (et al.), this device is more reliable and has a higher measurement range. As compared to the commercially available LCF meters, this device is cheaper. This device can now be a good and reliable alternative as a LCF meter. The use and functionality of the device can compete to commercially available LCF Meters.

Keyword: LCF Meter

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TABLE OF CONTENTS

TITLE PAGE.............................................................................................................................. APPROVAL SHEET................................................................................................................. ACKNOWLEDGEMENT........................................................................................................ ABSTRACT............................................................................................................................. TABLE OF CONTENTS.......................................................................................................... LIST OF TABLES................................................................................................................... LIST OF FIGURES................................................................................................................ I. INTRODUCTION................................................................................................................. II. REVIEW LITERATURE..................................................................................................... Related Literature....................................................................................................... Related Studies........................................................................................................... III. IMPROVED DIGITAL LCF METER................................................................................ Abstract...................................................................................................................... Introduction................................................................................................................ Methodology............................................................................................................

Conceptual Framework........................................................................................ Design Discussion............................................................................................... Software Design................................................................................................... Circuit Design...................................................................................................... Data Gathering..................................................................................................... Analysis and Interpretation.................................................................................. Reliability of the Results..................................................................................... IV. CONCLUSION................................................................................................................. V. RECOMMENDATION..................................................................................................... REFERENCES........................................................................................................................ 5

APPENDIX.............................................................................................................................. A. Source Code........................................................................................................ B. Schematic Circuit................................................................................................ C. Physical Layout.................................................................................................. D. Bill of Materials................................................................................................. E. Data sheets.......................................................................................................... F. Grading Sheets.................................................................................................... G. Curriculum Vitae.................................................................................................

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LIST OF TABLES TABLE 3.1 Inductance Measurement of Digital LCF Meter by Aguilar (et.al) vs.Improved Digital LCF Meter.............................................................................................. TABLE 3.2 Capacitance Measurement of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter................................................................................................... TABLE 3.3 Frequency Measurements on Sine Waves of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter....................................................................................... TABLE 3.4 Frequency Measurements on Triangular Waves of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter..................................................................... TABLE 3.5 Frequency Measurements on Square Waves of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter................................................................................

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LIST OF FIGURES FIGURE 3.1 Phases of Water Flow Method............................................................................ FIGURE 3.2 Conceptual framework....................................................................................... FIGURE 3.3 Block Diagram of the Project............................................................................. FIGURE 3.4 Software Workflow............................................................................................ FIGURE 3.5 Power Supply Circuit......................................................................................... FIGURE 3.6 Colpitts Oscillator.............................................................................................. FIGURE 3.7 Comparator Circuit............................................................................................. FIGURE 3.8 Microcontroller Circuit...................................................................................... FIGURE 3.9 Alphanumeric LCD............................................................................................ FIGURE 3.10 Inductance Measurement of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter................................................................................................... FIGURE 3.11 Capacitance Measurements of Digital LCF Meter by Aguilar (et.al) vs. Improved Digital LCF Meter................................................................................................... FIGURE 3.12 Frequency Measurements on Sine Waves of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter.................................................................................. FIGURE 3.13 Frequency Measurements on Triangular Waves of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter..................................................................... FIGURE 3.14 Frequency Measurements on Square Waves of Digital LCF Meter by Aguilar (et al.) vs. Improved Digital LCF Meter .................................................................... FIGURE 3.15 Cost of Different LCF Meter............................................................................

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