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DISCOTHEQUE LIGHT STROBOSCOPIC FLASHER

DISCOTHEQUE LIGHT STROBOSCOPIC FLASHER. SUBMITTED BY EDGEFX TEAM. ABSTRACT. Stroboscopic lighting effects for discotheques are achieved by conventional White Light Emitting Diode (LED) replacing the discharge lamps for higher efficiency and low cost

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DISCOTHEQUE LIGHT STROBOSCOPIC FLASHER

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  1. DISCOTHEQUE LIGHT STROBOSCOPIC FLASHER SUBMITTED BY EDGEFX TEAM

  2. ABSTRACT • Stroboscopic lighting effects for discotheques are achieved by conventional White Light Emitting Diode (LED) replacing the discharge lamps for higher efficiency and low cost • microcontroller is engaged to provide such effect being driven by a MOSFET for a cluster of LEDs.

  3. BLOCK DIAGRAM

  4. HARD WARE EQUIPMENTS • POWER SUPPLY BLOCK • MICROCONTROLLER (AT89S52/AT89C51) • LED • PWM • MOSFET • BC547 • 1N4007 • RESISTORS & CAPACITORS

  5. 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.

  6. EMBEDDED SYSTEMS

  7. MICRO CONTROLLER AT89S52 • 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

  8. PIN DIAGRAM OF AT89S52

  9. PWM • The PWM switching frequency has to be much faster than what would affect the load, which is to say the device that uses the power. • The term duty cycle describes the proportion of on time to the regular interval or period of time; • a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.

  10. PWM APPLICATIONS • Telecommunications • Power delivery • Voltage regulation • Audio effects and amplification.

  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. 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

  15. 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

  16. THANK ‘Q’

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