invention uses a combination of resistances and capacitance to limit the level of AC leakage current present in the metal body of electric appliances. The output of current limiting circuit is then fed to a Bridge rectifier which converts AC into DC. Then DC output of Bridge rectifier is used to drive the audio-visual alarm circuit‚ connected in parallel. Audio alarm circuit uses a buzzer while visual alarm circuit uses a light emitting diode (LED) connected in series with current limiting resistance
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Laboratory Handbook Stage 1 Semester 2 ENG1030M Electronics Applications Project Electronic Applications (ENG1030M) Module overview This laboratory based single module (100 hours total) consists of one 3 hour session per week and has 3 main parts. Each part involves practical and written work‚ these are shown below in chronological order. You should be advised that that the lab sessions use up 36 hours and therefore you will be expected to use the remaining 64 hours in background work
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SYNCMTR1 Synchronous Motor Characteristics Copyright 2004 Kilowatt Classroom‚ LLC. Synchronous Motors are three-phase AC motors which run at synchronous speed‚ without slip. (In an induction motor the rotor must have some “slip”. The rotor speed must be less than‚ or lag behind‚ that of the rotating stator flux in order for current to be induced into the rotor. If an induction motor rotor were to achieve synchronous speed‚ no lines of force would cut through the rotor‚ so no current would
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Wireless Power Transmission for Solar Power Satellite T.S. Hasarmani Department of Electrical Engineering‚ Bharati Vidyapeeth University’s College of Engineering‚ Pune 411043 santosh_hasarmani@rediffmail.com __________________________________________________________________________________________ Abstract --A great concern has been voiced in recent years over the extensive use of energy‚ the limited supply of resources‚ and the pollution of the environment from the use of present energy
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Guess Paper – 2009 Class – XII Subject –Chemistry : Solid State (Q.1) The appearance of colour in solid alkali metal halides is generally due to: ( 1 mark ) (a) Frenkel defect(b) Interstitial positions(c) F-centres(d) Schottky effect (Q.2) Schottky defects in crystal is observed when ( 1 mark ) (a) unequal number of cations and anions aremissing from the lattice(b) equal number of cations and anions are missing from the lattice(c) an ion leaves its normal siteand occupies an interstitial
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British Journal of Science 1 September 2011‚ Vol. 1 (2) © 2011 British Journals ISSN 2047-3745 Development of a GSM Based Household Power Management System Ganiyu R. A.‚ Arulogun O. T.‚ Adetunji A. B. and Okediran O. O. Department of Computer Science and Engineering‚ Ladoke Akintola University of Technology‚ P.M.B 4000‚ Ogbomoso‚ Nigeria. ABSTRACT Household power management system provides a means of controlling home appliances remotely using mobile phone. In this paper‚ we mainly focus on
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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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wheat stone bridge. (16)Derive an expression for the magnetic induction at a point on the equatorial line of a bar magnet. (17)Discuss Bohr’s theory of the spectrum of hydrogen atom. (18)What is rectification? Explain the working of a Full wave rectifier. Section – C III Long answer4 questions 2×8 = 16 M (i) Answer any two questions (ii) Each question carries ‘eight’ marks (19) Define Snell’s law. Using a neat labeled diagram derive an expression for the refractive index of the material
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TABLE OF CONTENTS CHAPTER ONE: INTRODUCTION 1. Introduction 2. Methodology 3. Scope of Work 4. Aims of the GSM Electronic Notice Board 5. Objectives of the GSM Home Appliance Control Device CHAPTER TWO: THEORETICAL BACKGROUND AND LITERATURE REVIEW 2.0 Theoretical Background 2.1 GSM Architecture 2.2 Technical Details 2.3 Main Cellular Standards 2.4 GSM Frequencies 2.5 Network Structure 2.6 Subscriber Identity Module (SIM) 2.7 Literature
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CIRCUIT IDEAS REMOTE-CONTROLLED FAN REGULATOR Dr C.H. VITHALANI sing this circuit‚ you can change the speed of the fan from your couch or bed. Infrared receiver module TSOP1738 is used to receive the infrared signal transmitted by remote control. The circuit is powered by regulated 9V. The AC mains is stepped down by transformer X1 to deliver a secondary output of 12V-0-12V. The transformer output is rectified by full-wave rectifier comprising diodes D1 and D2‚ filtered by capacitor C9 and regulated
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