This document contains the table of contents for a technical report that discusses capacitors, LEDs, potentiometers, and relays over 5 chapters. Chapter 2 provides details on the history, theory of operation, energy storage, DC and AC circuit behavior, parallel plate model, ideal behavior, and equivalent circuit of capacitors. Similarly, chapters 3, 4, and 5 examine the history, technology, uses, construction, applications of LEDs, potentiometers, and relays respectively.

1. CONTENTS
Page No.
Certificate (i)
Candidate’s Declaration (ii)
Acknowledgement (iii)
Abstract (1)
Chapter 1 INTRODUCTION (2-3)
1.1 Basic design elements (2)
Chapter 2 CAPACITOR (4-13)
2.1 Capacitor (4)
2.2 History (5)
2.3 Theory of operation (6)
2.4 Energy Storage (7)
2.5 Current Voltage Relation (7)
2.6 Dc circuit (8)
2.7 Ac circuit (9)
2.8 Parallel plate model (10)
2.9 Capacitor on ideal behavior (11)
2.10 Break down voltage (11)
2.11 Equivalent circuit (12)
Chapter 3 LED (14-20)
3.1 History (14)
3.2 Practical use (16)
3.3 Technology (18)

2. 3.4 Ultraviolet and blue LED (19)
3.5 White light (20)
Chapter 4 Potentiometer (21-24)
4.1 Construction (21)
4.2 Linear taper potentiometer (22)
4.3 Membrane potentiometer (23)
4.4 Potentiometer applications (24)
Chapter 5 Relay (25-31)
5.1 Basic design and operation (25)
5.2 Types (27)
5.3 Application (31)
CONCLUSION (32)
REFERENCES (33)
Appendix A: List of Figures (34)