1. ULTRA FAST ACTING ELECTRONIC CIRCUIT BREAKER
SUBMITTED BY
EDGEFX TEAM

2. ABSTRACT
The outline of the project is to shut down the power supply when it is overloaded.
Electronic circuit breaker is based on the voltage drop across a series element typically a low value resistor or a CT (current Transformer).
The unit is extremely fast and overcomes the drawback of the thermal type.

3. BLOCK DIAGRAM

4. HARD WARE EQUIPMENTS POWER SUPPLY BLOCK
MICROCONTROLLER (AT89S52/AT89C51)
RELAY
LCD
MOSFET
LM358
POT (10K)
1N4007
LED
RESISTORS & CAPACITORS

6. EMBEDDED SYSTEMS Definition for :- EMBEDDED SYSTEMS
A combination of hardware and software which together
form a component of a larger machine.
An example of an embedded system is a microprocessor that
controls an automobile engine.
An embedded system is designed to run on its own without
human intervention, and may be required to respond to
events in real time.

7. AT89S52 MICRO CONTROLLER Compatible with MCS®-51 Products
• 8K Bytes of In-System Programmable (ISP) Flash Memory
• 4.0V to 5.5V Operating Range
Crystal Frequency MHZ
• Three-level Program Memory Lock
• 256 x 8-bit Internal RAM
• 32 Programmable I/O Lines
• Three 16-bit Timer/Counters
• Eight Interrupt Sources
• Full Duplex UART Serial Channel
• Watchdog Timer
AT89S52

8. PIN DIAGRAM OF AT89S52

9. LM 358 ( COMPARATOR ) Internally frequency compensated for unity gain.
Large dc voltage gain: 100 Db.
Wide bandwidth (unity gain): 1 MHz (temperature compensated)
Wide power supply range:
Single supply: 3V to 32V
or dual supplies: ±1.5V to ±16V
Very low supply current drain (500 µA)-essentially independent of supply voltage.
Low input offset voltage: 2 mV
Input common-mode voltage range includes ground.
Differential input voltage range equal to the power supply voltage.

10. LM 358 PIN DIAGRAM 1 - Output 1 2 - Inverting input
3 - Non-inverting input
4 – VCC-
5 - Non-inverting input 2
6 - Inverting input 2
7 - Output 2
8 – VCC+

11. MOSFET
Metal–Oxide–Semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET)
MOSFET is a device used for amplifying or switching electronic Signals

12. MOSFET as a switch & P- Type , N-Type MOSFET

13. BC547 The BC547 transistor is an NPN Epitaxial Silicon Transistor.
The BC547 transistor is a general-purpose transistor in small plastic packages.
It is used in general-purpose switching and amplification BC847/BC547 series 45 V, 100 mA NPN general-purpose transistors.
Whenever base is high, then current starts flowing through base and emitter and after that only current will pass from collector to emitter

14. RELAY IT IS A ELECTRO MAGNETIC SWITCH
USED TO CONTROL THE ELECTRICAL DEVICES
COPPER CORE MAGNETIC FLUX PLAYS MAIN ROLE HERE

15. BIBILOGRAPHY
The Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education.
ATMEL 89S52 Data Sheets.

16. BIBILOGRAPHY
The Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education.
ATMEL 89S52 Data Sheets.

17. THANK ‘Q’