usefulness of the PIC microcontroller in power control field. Keywords-Automatic voltage regulator (AVR); microcontroller; autotransformer; phase control; triac I. PIC INTRODUCTION The automatic voltage regulator or AVR‚ as the name implies‚ is a device intended to regulate voltage automatically: that is to take a varying voltage level and turn it into a constant voltage level [4]. Automatic voltage regulators are widely used in electrical power field to obtain the stability and good
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What factors allowed America to win the war for independence? American achievement in the War of Independence was essentially the aftereffect of the contention growing into a worldwide battle that the British did not have any desire to battle. The inclusion of the French‚ Spanish and in the long run the Dutch put Britain in a powerless position from which both the legislators and the military started to scrutinize the benefit of battling in America. These questions were expanded when it turned out
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complete control and claimed divine power. When Caesar Augustus took over the bureaucracy lost all its power and the emperor gained that power. The other empire is the Gupta of India which was a not very centralized government but had a emperor that claimed divine power. The Gupta also did not have a very large bureaucracy like the Romans. The Roman Empire and the Gupta Empire both had a emperor at the center with a small bureaucracy‚ but the Gupta gave some power to their local officials. The Romans
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World War II it was an era of simplicity and desperation the general population had housing crisis‚ food shortage and raw material shortages etc. Political Influences On a global political stand point there was a uniting of ideas and governments; what we know today as the United Nations (UN). One of the main ideas which the UN has grown up around is ‘The individual possess rights simply by virtue of being Human’ (The Universal Declaration of human rights); which was adopted by the general assembly
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did not successfully integrate western imperial ideals into their traditional culture‚ so they were unable to resist. There were numerous aspects that influenced the west’s victory over China such as: allowing the west to do as they pleased‚ unfair treaties‚ and uprisings/rebellions. The treaty of Nanjing end the first opium war in 1842‚ but was founded on British terms. The British imposed on Chinese sovereignty and opened up five trade routes. The Great Powers were exhibiting their superiority over
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Imperial Presidency 2 examples from 19th century - Lincoln suspended Habeas Corpus - Jefferson bought Louisiana‚ wasn’t his Constitutional right - Jackson breaks up national bank into many "pet banks" - Jackson forced out Cherokee Indians even after Supreme Court decided on Indian side: "Supreme Court has made their decision; now let them enforce it." 4 examples from 20th century - FDR declared neutrality but sold Destroyers to Britain (Lend Lease) - Truman ceased a steel
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In the mid-1800s‚ New Zealand and Britain were two very different countries. While Britain was a flourishing country with big cities‚ tall buildings‚ a steadily growing population and civilised enough to have organised people into classes‚ in New Zealand the Maori had only settled three-hundred years earlier‚ the land was heavily forested‚ there was no major cities or towns and there was no money – only trade. Although Britain was much more developed than New Zealand‚ it was becoming overcrowded
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i AUTOMATIC POWER FACTOR CORRECTION ROSLINA BINTI MOHD RAZAK UNIVERSITI TEKNIKAL MALAYSIA MELAKA ii “I hereby declare that I have read this project report and in my opinion this project report is sufficient in terms of scope and quality for awarding the degree of Bachelor of Electrical Engineering (Industrial Power)” Signature: .......................................................................... Name of Supervisor: En. Azhar Bin Ahmad Date: 8 May 2009 ………………………………………
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Laboratory 1: Power Factor Correction Figure 1 Power Factor Correction Note: The ammeters & Voltmeters read PEAK values‚ but the Wattmeter reads true rms power. This circuit is available on StudyNet as pfcor.sch‚ for use with TinaPlus in D411/D421. This lab consist of two sessions Session 1: Preparation (2 Hours). This is an open lab session where you will need to fill up the preparation answer sheet Session 2: Lab experiment (2 Hours). This is a supervised session where you will
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called the power factor angle and the cosine of this angle is called the power factor. Power factor may be defined also as the ratio of the real power to the apparent power whose value lies between 0 and 1 and it is dimensionless quantity. Figure 2 Shows the Power Triangle Voltage (V) θ Current ( I) Apparent power (S) Reactive Power (Q) θ Real Power (P) Figure2. Power Triangle Figure1. A typical vector diagram for ACvoltage and current It has been observed that the power is very
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