INTRODUCTION A voltmeter finds its importance wherever voltage is to be measured. A voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit. General purpose analog voltmeters may have an accuracy of a few per cent of full scale‚ and are used with voltages from a fraction of a volt to several thousand volts. Digital voltmeters give a numerical
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format. The time and date can be changed at any Time using the keypad. The Real Time Clock as well as countdown timer is displayed on LCD display. We can set the reminders on events or alarm at a particular time and date. We can use the LED array for larger display. COMPONENT USED 1. AT89S52 Microcontroller 2. IC DS1307 3. LCD 4. Keypad SOFTWARE USED 1. KEIL µVISSION3 2. PRO 51 DESCRIPTION OF 8051 When we have to learn about a new computer we
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Alcohol breathalyzer circuit using 8051 microcontroller. Three digit display 1 of 9 http://www.circuitstoday.com/breathalyzer-circuit-using-8051 Home Forums Datasheets Lab Manual Testing Components Buy Project Kits Custom Search admin June - 5 - 2013 0 Comments Alcohol Breathalyzer circuit using 8051 microcontroller (AT89S51). This article is about a breathalyzer circuit using 8051 microcontroller which outputs the blood alcohol content (BAC) from the breath. The BAC is displayed in percentage
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converter. It is a 10-bit ADC which uses the in-built reference voltage level of 2.5V. Software Implementation: The programming required‚ reading the input signal from the ADC pin and then to display the voltage on the alphanumeric LCD‚ is done using Bascom-AVR. Though the features of an actual oscilloscope have been compromised upon but the essence of its hardware has been conserved by implementing a voltage reading device. CHAPTER-1 INTRODUCTION The oscilloscope is one of the
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ncontAUTOMATIC POWER FACTOR CORRECTION BY MICROCONTROLLER 8051 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Bachelor of Technology in Electrical Engineering By SATYASURANJEET BEHERA SIBASIS MOHAPATRA MONALISA BISOI Department of Electrical Engineering National Institute of Technology Rourkela 2007 AUTOMATIC POWER FACTOR CORRECTION BY MICROCONTROLLER 8051 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Bachelor of
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How voltmeter and ammeter work Measuring Voltage Measuring the voltage between two points of an electrical current can be done with an instrument called a voltmeter. One type of voltmeter is a direct-current voltmeter. When taking a voltage reading the instrument is placed across the portion of the circuit that is to be measured. Direct-Current Voltmeter The direct-current voltmeter has a horseshoe shaped magnet‚ with a semicircular piece of soft iron attached to each end of the magnet. The iron
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Power Electron..vol.11‚No.2‚Mar.2003.pp 311-317 * J.G. Cho‚J.W.Won‚H.S. Lee ‚ “Reduced conduction loss zero-voltage-transition power factor correction converter with low cost”‚ IEEE Trans Industrial Electron..vol.45‚no3‚Jun. 2000‚pp395-400. * “The 8051 Microcontroller and Embedded Systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi 13.Appendix DATA SHEET OF MICROCONTROOLER 89c51
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Construction Digital Voltmeter Raj K. Gorkhali A voltmeter finds its importance wherever voltage is to be measured. Here we present an easyto-build and accurate digital voltmeter that has been designed as a panel meter and can be used in DC power supplies panels or where it is necessary to have an accurate indication of the voltage. Circuit description The circuit uses an analogue-todigital converter ICL7107 made by INTERSIL. Fig. 1 shows the pin detail of IC L7107. This IC incorporates in
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Intel’s 8051 Micro controller Basics What are Micro controller’s ? Why the name Micro controller ? Basically used for control actions.It is used to control the operation of machine using fixed program that is stored in ROM/EPROM and that does not change over the life time. What is MCS 51 ? Why to study 8051 ? August 28‚ 2008 Y.H.Dandawate 2 August 28‚ 2008 Y.H.Dandawate 3 Features of 8051 8 bit ALU. 16 bit PC and DPTR. 8 bit stack pointer and 8 bit PSW. 4K internal ROM 128 bytes of Internal
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CONSTRUCTION HARSH KUMAR A voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog to digital converter. Voltmeters are made in a wide range of styles. Instruments permanently mounted in a panel are used to monitor generators or other fixed apparatus. Portable
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