ABSTRACT
Halogen lamps are prone to burn-out owing to their low cold current. The rapid heating inside the lamp melts the thin filament and cuts the lamp life short. The circuit described here enhances the life of the halogen lamp by allowing soft turn-on of the lamp.
When switch S1 is pressed, capacitor C1 charges via resistors R1 and R2, causing MOSFET T1 to conduct. It acts like a normal switch as long as the load (bulb B1) does not draw too much current. Resistor R4 limits the current through the load and also monitors the current flowing through MOSFET T1. The voltage drop across resistor R4 increases as the current through MOSFET T1 increases.
TABLE OF CONTENTS
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
1.2 AIM OF THE PROJECT
1.3 OBJECTIVE OF THE PROJECT
1.4 SIGNIFICANCE OF THE PROJECT
1.5 PURPOSE OF THE PROJECT
1.6 APPLICATION OF THE PROJECT
1.7 ADVANTAGES OF THE PROJECT
1.8 PROBLEM/LIMITATION OF THE PROJECT
1.9 PROJECT ORGANISATION
CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 REVIEW OF RELATED STUDIES
2.2 REVIEW OF RELATED TERMS
CHAPTER THREE
3.0 CONSTRUCTION METHODOLOGY
3.1 SYSTEM CIRCUIT DIAGRAM
3.2 SYSTEM OPERATION
3.3 CIRCUIT DESCRIPTION
3.4 SYSTEM CIRCUIT DIAGRAM
3.5 CIRCUIT OPERATION
3.6 IMPORTANCE AND FUNCTION OF THE MAJOR COMPONENTS USED IN THIS CIRCUIT
3.7 POWER SUPPLY UNIT
CHAPTER FOUR
RESULT ANALYSIS
4.0 CONSTRUCTION PROCEDURE AND TESTING
4.1 CASING AND PACKAGING
4.2 ASSEMBLING OF SECTIONS
4.3 TESTING
4.4.1 PRE-IMPLEMENTATION TESTING
4.4.2 POST-IMPLEMENTATION TESTING
4.5 RESULT
4.6 COST ANALYSIS
4.7 PROBLEM ENCOUNTERED
CHAPTER FIVE
5.1 CONCLUSION
5.2 RECOMMENDATION
5.3 REFERENCES
If the voltage at R4 reaches 0.65V, transistor T2 conducts and MOSFET T1 stops conducting. As a result, the lamp stops glowing. Capacitor C1 will hold charge when S1 is switched off. The discharge path for that residual charge is through diode D1 and resistor R5. So the soft turn-on functions correctly any time the bulb is turned on.
Assemble the circuit on a general-purpose PCB and enclose in a small plastic box. Use a heat-sink for mounting the MOSFET in order to dissipate the heat. Current-limiting resistor R4 protects the battery in case the output is short-circuited or the lamp draws more current than specified. Connect the bulb through two external wires having high-current-rating gauge.
Design And Construction Of A Halogen Lamp Saver For Bikes. (n.d.). UniTopics. https://www.unitopics.com/project/material/design-and-construction-of-a-halogen-lamp-saver-for-bikes/
“Design And Construction Of A Halogen Lamp Saver For Bikes.” UniTopics, https://www.unitopics.com/project/material/design-and-construction-of-a-halogen-lamp-saver-for-bikes/. Accessed 20 September 2024.
“Design And Construction Of A Halogen Lamp Saver For Bikes.” UniTopics, Accessed September 20, 2024. https://www.unitopics.com/project/material/design-and-construction-of-a-halogen-lamp-saver-for-bikes/
Here’s a typical structure for Design And Construction Of A Halogen Lamp Saver For Bikes research projects:
- The title page of Design And Construction Of A Halogen Lamp Saver For Bikes should include the project title, your name, institution, and date.
- The abstract of Design And Construction Of A Halogen Lamp Saver For Bikes should be a summary of around 150-250 words and should highlight the main objectives, methods, results, and conclusions.
- The introduction of Design And Construction Of A Halogen Lamp Saver For Bikes should provide the background information, outline the research problem, and state the objectives and significance of the study.
- Review existing research related to Design And Construction Of A Halogen Lamp Saver For Bikes, identifying gaps the study aims to fill.
- The methodology section of Design And Construction Of A Halogen Lamp Saver For Bikes should describe the research design, data collection methods, and analytical techniques used.
- Present the findings of the Design And Construction Of A Halogen Lamp Saver For Bikes research study using tables, charts, and graphs to illustrate key points.
- Interpret Design And Construction Of A Halogen Lamp Saver For Bikes results, discussing their implications, limitations, and potential areas for future research.
- Summarize the main findings of the Design And Construction Of A Halogen Lamp Saver For Bikes study and restate its significance.
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