ULTRA FAST ACTING ELECTRONIC CIRCUIT BREAKER SUBMITTED BY EDGEFX TEAM
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.
BLOCK DIAGRAM
HARD WARE EQUIPMENTS POWER SUPPLY BLOCK MICROCONTROLLER (AT89S52/AT89C51) RELAY LCD MOSFET LM358 POT (10K) 1N4007 LED RESISTORS & CAPACITORS
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.
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 11.0592MHZ • 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
PIN DIAGRAM OF AT89S52
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.
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+
MOSFET Metal–Oxide–Semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) MOSFET is a device used for amplifying or switching electronic Signals
MOSFET as a switch & P- Type , N-Type MOSFET
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
RELAY IT IS A ELECTRO MAGNETIC SWITCH USED TO CONTROL THE ELECTRICAL DEVICES COPPER CORE MAGNETIC FLUX PLAYS MAIN ROLE HERE
BIBILOGRAPHY The 8051 Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education. ATMEL 89S52 Data Sheets. www.atmel.com www.beyondlogic.org www.wikipedia.org www.howstuffworks.com www.alldatasheets.com
BIBILOGRAPHY The 8051 Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education. ATMEL 89S52 Data Sheets. www.atmel.com www.beyondlogic.org www.wikipedia.org www.howstuffworks.com www.alldatasheets.com
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