controlling of AC lamp dimmer through mobile phone pdf

This report is a minor project report, title"CONTROLLING OF AC LAMP DIMMER THROUGH MOBILE PHONE".The project aims in designing a system which is capable of controlling the lamp dimming operation through Mobile phone using DTMF technology. The controlling device of the whole system is a Microcontroller. DTMF decoder to which Lamp is connected is interfaced to the Microcontroller. The users need to call the mobile phone present in the system which will be in auto answer mode. When the call got lifted, the user need to press the predefined intensity keys assigned to control the lamp dimming operation of AC lamp.

HERE IN THIS REPORT YOU WILL GET:

1. Introduction
2. Block Diagram of Regulated Power Supply
 2.1 Circuit Diagram
 2.2 Block Diagram & Circuit Diagram
3. Coding In Microcontroller Chip
4. Working
5. Snapshots of Projects
6. Components Requirements in Projects
7. Circuit Components Descriptions
 7.1 Power Supply Unit
 7.1.1 Transformer
 7.1.1.1 Application
 7.1.2 Rectifier Stage
 7.1.3 Filter Stage
 7.1.4 Voltage Regulation
 7.2 Dtmf
 7.2.1 Dtmf Decoder Mt8870 IC
 7.2.1.1 Internal Block Diagram
 7.2.1.2 Description
 7.2.1.3 Features
 7.2.1.4 Application
 7.3 Microcontroller
  7.3.1 Introduction to Microcontroller (AT89S52)
 7.3.2 Features
 7.3.3 Pin Diagram
 7.3.4 Pin Description
 7.3.5 Block Diagram
 7.3.6 Special Function Registers
 7.3.7 Interrupts
 7.3.7.1 Timer Flag Interrupts
  7.3.7.2 Serial Port Interrupts
 7.3.7.3 External Interrupts
 7.3.8 Reset
 7.3.9 Interrupts Control
 7.3.9.1 Interrupts Enable/Disable
 7.3.9.2 Interrupt Priority
 7.3.9.3 Software Generated Interrupts
 7.3.10 Program Counter and Data Pointer
 7.3.11 A & B CPU Resisters
 7.3.12 Flag and the Program Status Word (PSW)
 7.3.13 Internal Ram and Rom
 7.3.14 Stack and Stack Pointer
 7.3.15 Modes of Operations
 7.3.15.1 Idle Mode
 7.3.15.2 Power Mode
 7.3.15.3 Addressing Mode
 7.3.16 Absolute Maximum Rating
 7.4 Crystal Oscillator
 7.5 Capacitor
 7.6 Resistor
 7.7 Diode
 7.8 Relays
 7.8.1 Operation
 7.9 Transistor
8. Advantages, Disadvantages & Applications
9. Result
10. Conclusion
11. References 

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