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*  Direct current - Wikipedia
High-voltage direct current is used to transmit large amounts of power from remote generation sites or to interconnect ... he found that as the magnet used passed the loops of wire each half turn, it caused the flow of electricity to reverse, ... High-voltage direct current (HVDC) electric power transmission systems use DC for the bulk transmission of electrical power, in ... Because of the significant advantages of alternating current over direct current in using transformers to raise and lower ...
  https://en.wikipedia.org/wiki/Direct_current
*  Electric power transmission - Wikipedia
Assume now that a transformer converts high-voltage, low-current electricity transported by the wires into low-voltage, high- ... The power transmitted by an AC line increases as the phase angle between source end voltage and destination ends increases, but ... At the substations, transformers reduce the voltage to a lower level for distribution to commercial and residential users. This ... Loops can be "normally closed", where loss of one circuit should result in no interruption, or "normally open" where ...
  https://en.wikipedia.org/wiki/Electric_power_transmission
*  Power-system automation - Wikipedia
The instrument transformers with protective relays are used to sense the power-system voltage and current. They are physically ... The term "power system" describes the collection of devices that make up the physical systems that generate, transmit, and ... Strong electromagnetic fields caused by the high voltages and currents in power lines occur regularly in electric substations. ... Legacy telecom networks were interconnected with metallic wires, but the substation environment is characterized by a high ...
  https://en.wikipedia.org/wiki/Power-system_automation
*  Opto-isolator - Wikipedia
Both transformers and opto-isolators are effective in breaking ground loops, common in industrial and stage equipment, caused ... the absence of external bias the diode converts the energy of light into electric energy by charging its terminals to a voltage ... These sensors, wired into a Wheatstone bridge circuit, generate binary on/off output signals. At the time of their introduction ... and they cannot transmit power. Typical opto-isolators can only modulate the flow of energy already present on the output side ...
  https://en.wikipedia.org/wiki/Opto-isolator
*  Balun - Wikipedia
... voltage) to electrical current and the total power of the output. For idealized transformers, although the ratio of voltage to ... The collapsing magnetic field then induces an electric field in the secondary winding. The ratio of loops in each winding and ... In classical transformers, there are two electrically separate windings of wire coils around the transformer's core. The ... When it comes to transmitting antennas the choice of the toroid core is crucial. A rule of thumb is: the more power the bigger ...
  https://en.wikipedia.org/wiki/Balun
*  Wireless Power Now A Reality - Slashdot
... which allows power to be transmitted wirelessly. The device has already gain... ... There is nothing about the laws of physics which require a wire to transmit power, anybody viewing lightning has pretty good ... An average electric-powered model plane with, say, a 6 foot wing span, uses a 1 horsepower electric motor. I have a hard time ... The current passes over a resistor and you measure the voltage level. You run that voltage level through a band pass filter and ...
  https://science.slashdot.org/story/07/04/01/0421214/wireless-power-now-a-reality?sdsrc=nextbtmnext
*  Electricity generation - Wikipedia
... using power transformers to transmit power at high voltage and with low loss. In 1870, commercial electricity production ... It can be seen experimentally by rotating a magnet within closed loops of a conducting material (e.g. copper wire). Almost all ... For electric utilities in the electric power industry, it is the first stage in the delivery of electricity to end users, the ... Electric generators were known in simple forms from the discovery of the magnetic induction of electric current in the 1830s. ...
  https://en.wikipedia.org/wiki/Electricity_generation
*  Resonant inductive coupling - Wikipedia
Wireless electric energy transfer for experimentally powering electric automobiles and buses is a higher power application (>10 ... Therefore, the voltage gain Ar of the secondary coil with respect to the primary coil when the system is resonating, A r = k Q ... The gap between the transmit and receive coils was designed to be less than 10 cm when powered. In addition to buses the use of ... Unlike mains-wired equipment, no direct electrical connection is needed and hence equipment can be sealed to minimize the ...
  https://en.wikipedia.org/wiki/Resonant_inductive_coupling
*  Copper conductor - Wikipedia
Magnet wire or winding wire is used in windings of electric motors, transformers, inductors, generators, headphones, ... Copper: Conductors in Low Voltage Dry Type Transformers". Vt-inc.com. 2006-08-29. Archived from the original on 2012-07-08. ... This pattern has advantages to daisy chain loops. Installation tools, tips, and techniques for networked wiring systems using ... Alternatively, wireless systems are a security risk as they can transmit sensitive information to unintended users over similar ...
  https://en.wikipedia.org/wiki/Copper_conductor
*  Ground (electricity) - Wikipedia
In single-wire earth return (SWER) AC electrical distribution systems, costs are saved by using just a single high voltage ... Jensen Transformers. Bill Whitlock, 2005. Understanding, Finding, & Eliminating Ground Loops In Audio & Video Systems. Archived ... An electric current was sequentially applied by the sender through the various wires representing each digit of a message; at ... Some types of transmitting antenna systems in the VLF, LF, MF and lower SW range must have a good ground to operate efficiently ...
  https://en.wikipedia.org/wiki/Ground_(electricity)
*  Ground loop (electricity) - Wikipedia
... from nearby transformers, electric motors, or just adjacent power wiring, will induce currents in the loop by induction. Since ... In digital systems, which commonly transmit data serially (RS232, RS485, USB, Firewire, DVI, HDMI etc) the signal voltage is ... Ground loops are a major cause of noise, hum, and interference in audio, video, and computer systems. Wiring practices that ... which are connected through the building utility ground wire. This is the ground loop. In the vicinity of electric power wiring ...
  https://en.wikipedia.org/wiki/Ground_loop_(electricity)
*  1911 Encyclopædia Britannica/Dynamo - Wikisource, the free online library
... and with the above star connexion the voltage between the outer pair of wires a and c is √2, or 1.414 times the voltage between ... Alternators and Transformers (London, 1893); Id., Electric Transmission of Energy (London, 1894); Id., Dynamo Construction; ... and whatever the actual end-connexions of the wires, the wires may be imagined to be joined together into a system of loops ... 42), the three transmitting wires may be connected to the junctions of the coils (by means of collecting rings if the armature ...
  https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Dynamo
*  HEARING THROUGH WIRES
The sounds were clearly heard 'in the nerves' with a very small applied voltage. Sounds were being deliberately transmitted ... Spoken sounds were reproduced as a vibrating electric current in the charged line which can be sensed and 'heard' in the ... A great variety of loops, coils, soft-iron bars, and iron horseshoes appear in Meucci s successive designs. These latter models ... He developed ferrites, with which he constructed true audio transformers and loudspeaking transceivers. He invented marine ...
  http://johnbedini.net/john34/meucci.html
*  Utility pole - Wikipedia
... and include transformers to step the voltage down from the primary voltage to the lower secondary voltage used by the customer ... Power is transmitted using the three-phase system, with three wires, or phases, labeled "A", "B", and "C". Subtransmission ... supports for traffic lights and overhead electric trolley wires, and cellular network antennas. They can also carry fixtures ... In the UK, boots fitted with steel loops that go around the pole (known as "Scandinavian Climbers") are also used for climbing ...
  https://en.wikipedia.org/wiki/Utility_pole
*  Single-phase generator - Wikipedia
... continuously alternating voltage. Single-phase generators can be used to generate power in single-phase electric power systems ... We can add more rectangular loops to the armature as seen on the picture on the right. The additional loops at the armature arm ... The power was transmitted through 4.2 kilometres (2.6 mi) cables to power an identical motor at the mill. The plant was the ... As the 4 coils are wired in series and their outputs are "in phase", the AC output of this single-phase generator will have 4 ...
  https://en.wikipedia.org/wiki/Single-phase_generator
*  Optical fiber - Wikipedia
Modulation of the light source to transmit a signal also slightly widens the frequency band of the transmitted light. This has ... than wire cables. Fibers are used instead of metal wires because signals travel along them with less loss; in addition, fibers ... In 1981, General Electric produced fused quartz ingots that could be drawn into strands 25 miles (40 km) long. Initially high- ... Extrinsic sensors can be used in the same way to measure the internal temperature of electrical transformers, where the extreme ...
  https://en.wikipedia.org/wiki/Optical_fiber
*  Sam's Laser FAQ - Carbon Dioxide Lasers
There are separate control loops for voltage and current: *Voltage control: An auxiliary winding on the HV transformer feeds a ... I suppose the electric field from the beam exceeded the breakdown voltage of the atmosphere and resulted in a bit of ionization ... There are three wires going to the CO2 laser tube, one to the middle one on each end. There are a pair of Eimac 8163/3-400Zs ... The transformers are 18 kV, drop across the tube is 5 kV starting and 8.8 kV at max current. The total tube current is 85 mA ...
  http://repairfaq.org/sam/laserco2.htm
*  Patent US20090289584 - Ultra-compact, high-performance motor controller and method of using same - Google Patents
Every day modern consumers and workers are aided by dozens of electric motors, which convert electric current and voltage into ... These devices transmit position information through signal wires 172 and 174. The motor 152 uses the following signals are used ... it is further contemplated that smaller profile voltage conversion options include: charge pump; different shape transformers ( ... The single point connection 402 eliminates current loops within the layers. The positive bus node plane 414 is connected to the ...
  http://www.google.com/patents/US20090289584?dq=6,455,937
*  Welcome to BAHUVIDA LIMITED's Official Blog: Electric Power Transmission
... the universal system used transformers to step-up voltage from generators to high-voltage transmission lines, and then to step- ... Single-wire earth return (SWER) or single wire ground return is a single-wire transmission line for supplying single-phase ... The power transmitted by an AC line increases as the phase angle between source end voltage and destination ends increases, but ... Subtransmission circuits are usually arranged in loops so that a single line failure does not cut off service to a large number ...
  http://bahuvida.blogspot.com/2014/05/electric-power-transmission.html
*  Transformer - Wikipedia
Transformers are used to increase (or step-up) voltage before transmitting electrical energy over long distances through wires ... Section 6 Transformers, etc, pp. 547-644.. *. Kothari, D.P.; Nagrath, I.J. (2010). Electric Machines (4th ed.). Tata McGraw- ... Knowlton 1949, §2-67 Steinmetz' Formula; §4.279 Hysteris Loops, p.323 *^ EE-Reviewonline.com. "Steinmetz's Formula for Magnetic ... Low voltage (LV) bushing connects LV coil to LV grid 13. Low voltage current transformers . 14. Bushing voltage-transformer for ...
  https://en.wikipedia.org/wiki/Transformer
*  Inductor - Wikipedia
... so the electric field between neighboring turns stores charge on the wire, so the coil acts as if it has a capacitor in ... Its current-voltage relation is obtained by exchanging current and voltage in the inductor equations and replacing L with the ... the changing magnetic field can induce circulating loops of electric current in the conductive metal core. The energy in these ... allowing a great saving in weight from the use of smaller transformers.. Transformers enable switched-mode power supplies that ...
  https://en.wikipedia.org/wiki/Inductor
*  Hydro-Québec's electricity transmission system - Wikipedia
Each 735 kV line is capable of transmitting 2,000 MW of electric power at a distance of over 1,000 kilometres (620 miles) and ... The conductors then forwarded this current to sensitive electrical transformers, which require a certain voltage amplitude and ... and wire connections to repair the ones disabled by the storm in the electrical transmission and electric power distribution ... where the lines form loops encompassing part of the Saint Lawrence River and the south shore. The loops are also connected to ...
  https://en.wikipedia.org/wiki/Hydro-Qu%C3%A9bec's_electricity_transmission_system
*  IEER Reports: Nuclear Power Deception
The electricity from a large-scale generating station is transmitted at high voltage (to minimize transmission losses) to the ... Finally, there are extensive networks of wires and transformers that distribute electricity to consumers at the voltages they ... A General Electric vice-president later stated that "If we couldn't get orders out of the utility industry, with every tick of ... To prevent leakage of sodium-24 into the environment, sodium-cooled reactors are designed with two liquid sodium loops. The ...
  https://www.ieer.org/reports/npdz.html
*  ENVIRONMENTAL ENGINEERING
Iterations and Subprograms: Concept of loops, example of loops in C using for, while and do-while. Optionally continue may be ... Project Shop: Extrusion of soft metals, Plastic coating of copper wires, Plastic moulding.. Paper Code: ETME-159 L P C ... Transformers. Construction and Working principles and phaser diagrams of Single-phase Transformer, Emf equation, Equivalent ... To measure the frequency of a sine-wave voltage obtain from signal generator and to obtain lissajous pattern on the CRO screen ...
  http://ipu.ac.in/syllabus/affiliated/syllbtechee.htm