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III. UPQC - Academic Science,International Journal of Computer
III. UPQC - Academic Science,International Journal of Computer

... Where Isc is maximum short circuit current at PCC and IL is maximum load current at PCC. For study purpose, few medical loads and few miscellaneous loads were taken for measurement of electrical parameters like, % voltage THD, % current THD, current in each phase, Vrms. The analysis of the system hi ...
Battery-Charger Load Switch Approximates An Ideal Diode
Battery-Charger Load Switch Approximates An Ideal Diode

... Most rechargeable battery-powered systems include a switch that connects the load either to the battery or to a source of charging power. This switch allows a system with a depleted battery to operate immediately when plugged in, running on adapter power while the battery is charging. The simplest a ...
Magnetism and its uses
Magnetism and its uses

... resistance to electron flow and thus electricity moving through the conductor is lost as heat. Also as the temperature rises, the resistance rises and more current is lost. A material that has no electrical resistance is called a superconductor. • In 1911 scientists discovered that some materials wh ...
This is a preliminary list of courses for the study year 2016/2017
This is a preliminary list of courses for the study year 2016/2017

... EEP504 Microprocessors - based Automation Systems (graduate) 3.00 CP (4.5 ECTS) The course has been composed for any student who has elementary knowledge in the field of electrical engineering and programming and wish to gain basic practical skills of utilization of microcontrollers MSP430. The cour ...
ZXTP2006E6 20V PNP LOW SAT MEDIUM POWER TRANSISTOR IN SOT23-6 SUMMARY BV
ZXTP2006E6 20V PNP LOW SAT MEDIUM POWER TRANSISTOR IN SOT23-6 SUMMARY BV

... Fax: (49) 89 45 49 49 49 [email protected] ...
Design a simple DC power supply
Design a simple DC power supply

Circuits
Circuits

... □ The unit for work is the Joule (J) which is equivalent to Newton-meter □ 1 J = 1N m = 1 Kg m2 / s2 □ Energy □ Things have energy if they are able to do work. A human body has energy; so does a tank of gas and a falling stone. □ Energy is the capacity to do work. □ Energy exists in a variety of for ...
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STEVAL-ISA006V1

Faculty of Power and Electrical Engineering
Faculty of Power and Electrical Engineering

Electromancer Homework Exercise 1
Electromancer Homework Exercise 1

... _______ or is removed, there will still be a complete circuit for the ________ to flow through. This means that all bulbs receive an _______ share of the current and so the bulbs are equally as ________. ...
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7782 AMPLIFIER AE Techron

... f Over 4,000 watts peak output; 2858 watts rms into a 2 ohm load f 40 mSec pulses of up to 150 amperes peak into a 1 ohm load f Can be connected (up to four units) in series or parallel with other 7782 amplifiers. f Utilizes Bi-LevelTM Smart Power supply, able to generate both high voltage & high cu ...
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Understanding Power Quality - Meralco Corporate Partners
Understanding Power Quality - Meralco Corporate Partners

... voltages divided by the average of the three-phase voltages, usually expressed in percent ...
University of Bejaia 2nd year Technology Lecture two: Electric circuit
University of Bejaia 2nd year Technology Lecture two: Electric circuit

5 instruments in 1
5 instruments in 1

... • Measurement and recording of over 300 electric energy quality parameters acc. to EN 50160 standard. • Operation in 3 or 4-wire, 3-phase, balanced or unbalanced power networks. • Analysis of current and voltage harmonics up to the 51 st. • Configurable archives of actual values and event recording. ...
Improved Reset / Power Down Alarm Circuit
Improved Reset / Power Down Alarm Circuit

Investigating the Effects of Grid Equivalent Circuit at a Point of
Investigating the Effects of Grid Equivalent Circuit at a Point of

... Increasing amounts of distributed generation, specifically renewables such as solar and wind, are presenting distribution systems with a variety of problems. One of those problems is voltage variation in the system. Distribution systems supply power to loads that depend on a steady voltage, therefor ...
Film capacitors - PowerFactor Correction - MMI7000
Film capacitors - PowerFactor Correction - MMI7000

... rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether an EPCOS product with the properties described in the product specificatio ...
Glossary
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... locating Oncor facilities in the field and on maps. The number of complete cycles per second of a wave in alternating current. The standard measurement unit of frequency is hertz (Hz). The U.S. transmission standard is 60 cycles per second. ...
Low voltage fast-switching NPN power transistor
Low voltage fast-switching NPN power transistor

... Electrical characteristics (curves) ...
ICL7106/7107
ICL7106/7107

... liquid crystal display (LCD) and includes a multiplexed backplane drive, the ICL7107 will directly drive an instrument size light emitting diode (LED) display. The ICL7106 and ICL7107 bring together a combination of high accuracy, versatility, and true economy. True differential inputs and reference ...
Electrical and Electronics Engineering Department
Electrical and Electronics Engineering Department

130 years of history for electricity transmission
130 years of history for electricity transmission

... double beams, concrete bases and insulators mounted on bolt hooks on cables fixed on oak crossbars. Wires (those that are normally called “electrical wires”) used to be four and were made of copper (2 single-phase circuits). Until then, only many different types of experiments had been carried out, ...
vp-12124 24 volt dc switching power supply
vp-12124 24 volt dc switching power supply

... Volts +/-2% over the rated range of input voltages and output loads. A greater than 12 Amp load on power up will cause the power supply to current limit. Short circuit protection is provided. Over voltage is provided to limit the output voltage to approximately 28 Volts should a failure occur within ...
110V/0W = ∞A! P = VI
110V/0W = ∞A! P = VI

< 1 ... 1908 1909 1910 1911 1912 1913 1914 1915 1916 ... 2014 >

Alternating current



Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).
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