5 Volt DC Power Supply Rakibul Hassan Department of EEE‚ Ahsanullah University of Science and Technology (AUST)‚ Dhaka‚ Bangladesh. E-mail: rakib_h@y7mail.com Key Words Transformer‚ Rectifier‚ Pulsating DC‚ Ripple voltage‚ Filter‚ Zener diode. Abstract: |Serial No.|Component Details |Specification |Quantity | |1. |Transformer |220V/12V |1 piece | |2. |p-n junction diode |1N4007 |4 piece
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completion of the project. i INDEX ACKNOWLEDGEMENT INDEX LIST OF FIGURES LIST OF TABLES i ii iv v 1-INTRODUCTION 1.1 1.2 Introduction Scope 1 1 2-PROJECT PORTRAYAL 2.1 General Block Diagram and its Description 2.1.1 Transformer 2.1.2 Rectifier 2.1.3 Smoothing 2.1.4 Regulator Component List Schematic of Variable Power Supply Working of the Circuit 2 2 2 2 3 3 4 5 2.2 2.3 2.4 3-HARDWARE PORTRAYAL 3.1 3.2 3.3 Transformer Diode Capacitor 3.3.1 Electrolyte Capacitor 3.3.2 Unpolarised
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Chapter 1 1. An ideal voltage source has 5. A real current source has a. Zero internal resistance b. Infinite internal resistance c. A load-dependent voltage d. A load-dependent current a. Zero internal resistance b. Infinite internal resistance c. A small internal resistance d. A large internal resistance 2. A real voltage source has 6. If a load resistance is 1 kohm‚ a stiff current source has a resistance of a. Zero internal resistance b. Infinite internal resistance c. A small internal
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horsepower induction motors of the Permanent split / capacitor-start‚ Shaded pole construction‚ used in direct drive fans‚ HAVC (Heating‚ Ventilating‚ and Air Conditioning) systems and Refrigerators. Many applications employ the use of an SCR (silicon-controlled rectifier) speed controller on a single or 3-speed motors and this is not the most efficient technology‚ as they are fundamentally fixed-speed and also due to acoustical considerations‚ the fan motor is usually adjusted to operate at considerably
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Connecting a batter to the two ends of a diode 8. What is the maximum reverse-biased voltage that a diode can withstand called? a. Reverse breakdown voltage b. Avalanche voltage c. Peak inverse voltage (PIV) d. Depletion voltage 9. What does a rectifier circuit do? a. Rectifies audio signal for amplification b. Rectifies DC voltage to pure AC sine wave c. Converts AC into pulsating DC d. Uses 0.7 V to overcome distortion 10. What output voltage value does a 7805 IC regulator chip provide? a. -5V
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rays will be interrupted and the relay will be de-energized. Music will be played again normally. This project uses regulated 12V‚ 750mA power supply. 7812 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/18V step down transformer. POWER SUPPLY The power supplies are designed to convert high voltage AC mains electricity to
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Advantages 46 8. Applications 47 9. Conclusion 48 10. Reference 49 Chapter 1 INTRODUCTION As we have seen many types of remote controls like Infra-red controlled‚ RF controlled‚ DTMF controlled etc. The present model is also intended to control devices using GSM technology i.e. just by sending code (containing numerical numbers) to the appliance/devices status. So the present project model can be used in the substations
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Outline of the Course • Fundamentals of Control Systems • Introduction to Microprocessor-Based Control • Operational Amplifiers & Signal Conditioning • Switches‚ Relays & Power-Control Semiconductors • Mechanical Systems • Sensors • Electrical Machines • Electric‚ Hydraulic & Pneumatic • Feedback Control Principles • Relay Logic‚ PLCs & Motion Controllers • Basics of Modern Control Theories Dr. Kadir ERKAN Introduction to Control Systems 3 First Lecture : Fundamentals of Control Systems
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Electronic component ------------------------------------------------- ------------------------------------------------- Various components | An electronic component is a basic electronic element usually packaged in a discrete form with two or more connecting leads or metallic pads. Components are intended to be connected together‚ usually by soldering to a printed circuit board‚ to create an electronic circuit with a particular function (for example an amplifier‚ radio receiver‚ or oscillator)
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ELECTROMAGNETIC BRAKING SYSTEM A PROJECT REPORT Abstract The Project is based on one of the modern braking technologies‚ with the introduction of ABS (Anti-lock Braking System)‚ Brake-by-wire technology‚ electronic brake force distribution (EBD)‚ traction control system‚ emergency brake assist‚ or electronic stability control (ESC). The braking technology has reached a new peak. In this project electricity is applied to the coil at the time of braking. This develops a magnetic field around it and
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