Electricity

Control schemes to regulate the output voltage of ac-dc converters

Theory: For signal phase half wave converter, average output voltage of converter can be calculated as V0 = (v2v/p)*(1+cos??a)? For 0<a<p The speed of dc motors changes with the load torque. To maintain a constant speed, the armature (and or field) voltage should be varied continuously by varying the delay angle of ac-dc converters. In …

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The Difference Types of Semiconductors

Semiconductors play a dynamic character in nearly every arena of modern integrated circuit technology, and they enable the manufacturing of everything from receivers to computers and microprocessors. The most significant applications for semiconductor materials comprises their use in the creation of transistors, which are solid-state electronic devices that form the derivation for a vast array …

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Simulation of Current-Voltage (I-V) and Power-Voltage (P-V) Characteristics

Abstract: This paper simulates the mathematical model of the PV (photovoltaic) module based on the MATLAB script file with all the parameters are involved. Modeling this device environmental factors such as irradiation and temperature needs as input variables. The output of the PV module varies depending on the environmental factors. Any changes in the entries …

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Electricity and Electrical Resistivity

Electrical resistivity is a fundamental property that quantifies how strongly a given material opposes. Resistivity is measured by ohmsO. Electrons often encounter semi or non-conductive materials which causes resistance. A low resistivity indicates a material that readily allows the flow of electric current. Electrical conductivity itself is the movement of electrically charged particles. Often in …

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Voltge controlled crystal oscillator (VCXO)

A voltge controlled crystal oscillator (VCXO) is an electronic oscillator whose frequency of oscillation is controlled by the externally applied input voltage. The applied voltage determines the instantaneous frequency of oscillation. The basic circuit of VCXO comprises of a standard crystal oscillator along with an electronic means of tuning the frequency, generally achieved by the …

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Literature Review on WEDM

Last some decades studies shows that rapid research has been done on WEDM in terms of improving performance measures, optimizing the process parameters, monitoring and controlling the sparking process, simplifying the wire design and manufacture, improving the sparking efficiency by different researchers. The desired work done is further discussed in the upcoming paragraphs. Azmir azhari …

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Electrical Energy in Our World

Electrical energy is a traded commodity that is critical component of the daily life of consumers. There is an increasing demand for continuous access to power as consumers are increasingly critical of disturbance free power supply. Electrical disturbances occur at everything from planned to unplanned events on the power and transmission network. In many cases, …

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Electric gardens festival 2018

The second installment of Sydney’s electro bash festival descended again in the lush surrounds of Sydney’s Centennial Parklands, an idyllic location and arguably one of the best inner-city festival sites in New South Wales, featuring formal gardens, ponds, grand avenues, statues, heritage buildings, sporting fields and a diverse flora and fauna that make it an …

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The Business Opportunities within the Dubai Electricity and Water Authority (DEWA) Strategy

Introduction Dubai Electricity and Water Authority (DEWA), is a utility company based in Dubai city and mandated by the government of Dubai t provides water and electricity services to the people of Dubai. Since its inception in 1992, DEWA has grown to become an effective provider of water and electricity services to 500,000 and 600,000 …

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What is An Action Potential?

An action potential is an electrical impulse that begins at the axon hillock (trigger zone), propagates away from the soma, and moves down the axon, synaptic knob, and synapse. The action potential is triggered by a depolarization of the neuron from -70mV to -55mV. This depolarization occurs when the neuron receives either repeated stimuli or …

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Control Of Electricity Stability Parameters And Real-Time Mitigation Of Associated Environmental Concerns In A Renewable Energy Distributed Generation Scenario

In the primitive years of electricity utilization, electricity systems were configured to supply power very close to the point of use. As time progressed, centralized large scale power generation was developed and became dominant, facilitated by technological advancement, the advantage of economies of scale, and government regulations which support centralized power. Since, by nature, technology …

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Submarine Nuclear Power Station

Electricity! One of the most successful discoveries of all time which is utmost responsible for making our lives so luxurious. Today when we look around our daily life we find that our lives are orbiting around electrically operated devices. From bulbs to big machines, we are always surrounded by numerous electrical devise. The invention of …

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Tunable RF filters applications

Tunable RF filters are commonly used in various lab environments for testing many frequency bands that include WiFi, UHF, PMR, Tetra, PCS and LTE. Tunable notch filters or band-rejection filters are an excellent solution for band selection or frequency discrimination with high attenuation greater than 50 dB. This allows you to achieve excellent noise, harmonic …

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Thyristor – a Type of Diode

Thyristor is a type of diode that allows current to flow if and only if a control voltage is applied to its gate terminal. This kind of diode has three electrodes namely anode, cathode and gate. Thyristors have different working principle depending on its classification. Generally, the thyristor is switched off and no current flows …

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Electricity in the World

Electricity is the greatest gift of science to mankind. We have reached a point of our civilization when electricity is used for all purposes. Electricity is a source of energy. It is produced by a battery or a coil of wires or by dynamo machine. It is produced in thermal station and also in hydro-project. …

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Numerical Analysis and Measurement of Electric-field Strength inside GTEM cell at GSM frequencies

Abstract— A miniaturized Gigahertz Transverse Electromagnetic (GTEM) Cell is designed and fabricated to generate uniform electric (E-) field, essential for studying the RF exposure effect on tissue equivalent liquids at Global System for Mobile (GSM) Communication frequencies (914MHz and 2.10GHz). The simulation procedure is discussed and its results are compared with measurement data. The E-field …

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Lithium-ion Battery

Global lithium-ion battery market is projected to cross more than US$ 40 Billion by the end of year 2024. As we discuss about Lithium-ion batteries, it is a favored source of portable electronics. A lot of research and development is doing by the Battery manufacturer companies to reduce size, weight as well as cost of …

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DIELECTRIC POLARIZATION

The process of producing electric dipoles, which are oriented along the field direction, is called polarization in dielectric. Dielectric polarization is also the displacement of charged particles under the action of the external electric field. Hence it is useful is making circuits, capacitors etc. VARIOUS POLARIZATION PROCESSES: Ionic polarization. Orientational polarization. Electronic polarization. Interfacial/ Space …

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General description of an aircraft electrical system

An Aircraft Electrical System is a self contained network of components that generate, transmit, distribute, utilize and store electrical energy. General Description An electrical system is an integratal and essential component of all but the most simplistic of aircraft designs. The electical system capacity and complexity varies tremendously between a light, piston powered, single engine …

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Over Voltage Prediction System For Long Cable Issue Using Artificial Intelligence

Introduction Electricity is a backbone of our existence in today’s world. It’s quite hard to imagine a world without electricity in the modern times. We are dependent on it for a major part of our day to day activities. However, electricity does not exist in the natural form and also cannot be stored in usefully …

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Oxford ever ringing bell?

Located in a corridor close to the foyer of the Clarendon Laboratory at the University of Oxford, England, the Oxford Electric Bell or Clarendon Dry Pile is an experimental electric bell which has run continuously ever since when it was set up in 1840. It was “one of the first pieces” from a collection of …

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Electricity Prices: Empirical Analysis of Turkey Electricity Market after reforms

ABSTRACT Forecasting electricity demand is very important for all producers and distributors. Liberalization trends affect electricity markets as well and reforms encourage new firms to enter the markets. This causes to rapid technological improvement and increase renewable types energy resources usage to produce electricity . However, using renewable energy resources can cause to an increase …

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Electric Gardens Festival

Damian Gelle and Anton Marmot met in London in the ’90s over a mutual love of music and enjoying the hedonistic spoils the capital has to offer. They decided to go into business dabbling in event promotion and all things electronic until 2004 when they had their “eureka” moment. What London needed was an electronic …

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Evaluation of Rodney King’s And the New York Blackout Dispute

Rodney King’s case & New York blackout essay There are many incidents that occurred in the United States, which led to disastrous consequences. The Rodney King’s case and the New York blackout in 1977 are two incidents that have had catastrophic consequences. There are also many things everyone can learn from reading or experiencing these …

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LED Light Bars

Why do we choose LED Light Bars? A Led lights are a short either long bunch of huge-brightness Led lights. They give a luminous, extensive and forcing pole of light ahead, behind or to the side. They feed a powerful profit for dark driving or when fluorescent trails, rest areas or work areas. Different types …

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Energy Storage Impacts On Australian Electricity Networks

Introduction In these fast moving world renewable energy sources and storages plays crucial role to meet future end users requirement, in order to reach Australia’s commitment to reducing levels of greenhouse gas generation. However, there is uncertainty around these developments. To reach future generation requirements engineers were to take forefront step for establish renewable energy …

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