16 6. FULL-WAVE RECTIFIER 26 7. FET CHARACTERISTICS 31 8. h-PARAMETERS OF CE CONFIGURATION 36 9. TRANSISTOR CE AMPLIFIER 43 10. COMMON COLLECTOR AMPLIFIER 48 11. RC COUPLED AMPLIFIER 53 12. COMMON SOURCE FET AMPLIFIER 58 13. WEIN BRIDGE OSCILLATOR 63 14. RC PHASE SHIFT OSCILLATOR 66 15. CURRENT-SERIES FEEDBACK AMPLIFIER 71 16. VOLTAGE-SERTES FEEDBACK AMPLIFIER 77 17. HARTLEY OSCILLATOR 83 18. COLPITT’S OSCILLATOR 87 19. SILICON-CONTROLLED RECTIFIER(SCR) CHARACTERISTICS
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overloading. Firstly the power supply is built‚ a 240v-15v AC transformer is used‚ the 15v section of the transformer is solder to the vero board and a bridge rectifier is fixed to the wires on the board‚ the filtering capacitor (1000uf) is connected to DC output of the rectifier‚ then a voltage regulator (LM7812) is connected to the output of the rectifier‚ this steps completes the power supply so the parallel port cable is soldered to the board and the opto-isolator are placed carefully on the board and
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Power Supply: AC Step Down Transformer Bridge Rectifier Filter Regulator Regulated Output DC Block Diagram Description for Power Supply: Definitions: It is an electronics unit‚ which is used to give regulated power to any electronics system. Block Diagram Description: 1. Transformer : This block consists of step down transformer for our required ratings. 2. Rectifier : This block consists of diode based rectifier circuit. 3. Filter Circuit : This block consists
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end of this topic you will be able to; describe‚ by drawing a graph‚ the effect of a capacitor on the output waveform from a rectifier; know that the size of the ripple voltage is dependent on the method of rectification‚ the values of capacitance and load resistance; describe‚ by drawing graphs‚ the effect of loading on the output waveform of a smoothed rectifier. Capacitive smoothing. In our work on power supplies so far we have determined how to calculate the peak value of the output
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MINISTRY OF SCIENCE AND TECHNOLOGY DEPARTMENT OF TECHNOLOGY AND VOCATIONAL EDUCATION TECHNOLOGICAL UNIVERSITY‚ MAWLAMYINE DEPARTMENT OF ELECTRONIC ENGINEERING PROJECT REPORT ON REGULATED DUAL VOLTAGE DC POWER SUPPLY Supervisor: U Thein Min Wai ABSTRACT The regulated power supply converts the standard 220 volts‚ 50 or 60 Hz AC available at wall outlets into a constants DC voltage. It is one of the most common electronics circuits that we can find. The DC voltage produce
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engineers dealing with three-phase ac–dc converters. A classified list of around 450 research articles on IPQCs is also appended for a quick reference. Index Terms—Harmonic reduction‚ improved power quality‚ power-factor correction‚ switch-mode rectifiers‚ three-phase ac–dc converters. I. INTRODUCTION T HREE-PHASE ac–dc conversion of electric power is widely employed in adjustable-speeds drive (ASDs)‚ uninterruptible power supplies (UPSs)‚ HVdc systems‚ and utility interfaces with nonconventional
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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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versions is shown above. Transformer T1 is a 230V primary‚ 12V secondary‚ 500mA step down transformer. D1 is a 1A bridge which performs the job of rectification. Capacitor C1 filters the rectifier output and C2 is the AC by-pass capacitor. IC1 (7809) is a 9V fixed positive voltage regulator. The output of the rectifier+filter section is
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CONTENTS 1. INTRODUCTION 2. DESIGN PRINCIPLE 3. CIRCUIT DESCRIPTION a. Power supply b. Under voltage/over voltage detector c. NOR Gate (OR and NOT gate) d. Bi-stable / Latch e. Relay driver f. Buzzer Driver 4. FUTURE EXPANSION 5. CONCLUSION INTRODUCTION The protection system is one o the important aspect on which major manufacturers is concentrating. The companies like L&T‚ SIMENS etc. The protection system not only provides durability
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charger light‚ cell phone battery charger etc. It’s nothing but a AC to DC converter. Keywords: 5V DC power supply‚ rectifier‚ diode‚ filter‚ capacitor‚ zener diode‚ voltage regulator‚ signal‚ waveshape. 1. Introduction I’m designing a 5V DC power supply. Here I’m basically designing a AC to DC converter. To convert the AC to DC‚ I’m using components like full wave bridge rectifier‚ filter & a voltage regulator. To get the constant 5V I use 1N4733A zener diode. The block diagram of this project
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