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fc-72 series fire alarm system
fc-72 series fire alarm system

... Any fire alarm system may fail for a variety of reasons: Smoke detectors may not sense fire where smoke cannot reach the detectors such as in chimneys, in walls, on roofs, or on the other side of closed doors. Smoke detectors also may not sense a fire on another level or floor of a building. A secon ...
T.C. Neugebauer and D.J. Perreault, “Parasitic Capacitance Cancellation in Filter Inductors,” IEEE Transactions on Power Electronics , Vol. 21, No. 1, January 2006, pp. 282-288.
T.C. Neugebauer and D.J. Perreault, “Parasitic Capacitance Cancellation in Filter Inductors,” IEEE Transactions on Power Electronics , Vol. 21, No. 1, January 2006, pp. 282-288.

... of other filtering and balancing techniques that have been explored in the past. The topology of the filter network that is created [e.g., Fig. 3(b)] is identical to coupled inductor filter structures that have been used widely for everything from notch-filtering [11], [12] to “zero ripple” filters ...
COMMITTEE DRAFT OIML/CD4
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... In the absence of an updated OIML Recommendation, the electricity meters are presently tested against IEC standards or national or regional standards. A revised OIML Recommendation could be accepted in most parts of the world, therefore reducing costs for manufacturers, nations and consumers. Althou ...
LAPP IPMC Mezzanine LAPP Intelligent Platform Management Controller Mezzanine Version V1.5
LAPP IPMC Mezzanine LAPP Intelligent Platform Management Controller Mezzanine Version V1.5

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... typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular product with the properties described in ...
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... many factors, including equipment failure or defects, environmental conditions, and improper handling or use. It is the user’s responsibility to exercise common prudence and navigational judgements. This radar unit should not be relied upon as a substitute for such prudence and judgement. ...
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... The UC Berkeley Electrical Safety Program must be applied to every individual piece of equipment, research / experimental apparatus or facility that has electrical energy as a source of power and/or utility distribution in compliance with Cal/OSHA code, California Electrical Code, California Buildin ...
Submersible Sewage Pump
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BME 311: BIOMEDICAL INSTRUMENTATION I Lecturer: Ali Işın
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... • Needed for safety! Isolates the patient from high voltages and currents to prevent electric shock by introducing a specific barrier between passage of current from the power line to the patient. • Can be done by using light (photo emitter and photo detector) or a transformer (set of inductors that ...
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Professional Analogue Multi-meter

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... An Inductive and Capacitive Integrated Couper and Its LCL Compensation Circuit Design for Wireless Power Transfer Fei Lu, Hua Zhang, Heath Hofmann and Chris Mi Design Procedure of Optimum Self-Inductances of Magnetic Pads in Inductive Power Transfer (IPT) for Electric Vehicles Minhyuck Kang, Jongeun ...
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... This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for electrical current to reduce the risk of electrical shock. This product is equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug must be plugg ...
MATERIAL SPECIFICATION FOR FLOODLIGHT LUMINAIRES
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... Documents as the Owner invokes them. Invoking a particular appendix does not obligate an Owner to use all available appendices. Only invoked appendices form part of the Contract Documents. The decision to use any appendix is determined by an Owner after considering their contract requirements and th ...
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... The IC64-16 is intended to provide position, shape and intensity readout of high-energy ion beams, nominally proton beams in the energy range 30 to 350 MeV. The beams pass through the chamber with minimal scattering and energy loss. The IC64-16 will typically form a part of a complete beam dosimetry ...
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... The voltage levels and short circuit currents at the 480 V system buses and equipment are affected by several changes being performed for the EPU and Auxiliary Feed Water (AFW) modifications. In addition to the isolated phase bus (IPB) cooling and transformer cooling modifications, the additional ke ...
Axxium™ Pro UPS
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... the UPS has sufficient redundant capacity. Battery modules may also be hot swapped for maintenance. Power control circuitry in the cabinet senses problems in power modules, and automatically transfers control to redundant modules. All power modules share the load requirements equally. For example, t ...
Submersible Pumps Solar Pumps
Submersible Pumps Solar Pumps

... High Efficiency, Low Cost, Great Features The SQ series pump features a permanent magnet motor controlled by an electronic frequency converter developed by Grundfos. It starts slowly, without surge so it can be run on a much smaller inverter or generator than a conventional AC submersible pump. This ...
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Short Circuits Volume 1 by Jaycar Electronics

Aalborg Universitet Converters
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... A large inductance in the L filter is required to limit the high-frequency switching ripple, which results in a bulky and expensive passive filter. However, the low ripple condition leads to a very high efficiency, similar to 50/60 Hz utility transformers. The drawbacks are very high cost and excess ...
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ME371, MT371 ME372, MT372

...  Make good contact with current conductors irrespective of their design and material  Do not damage conductors • Voltage terminals:  Internal and/or external connection  A sliding bridge (for simple separation of a voltage part from a current part) ...
Guidelines for the Evaluation of Underground Storage
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... A very similar guidance document was first developed by the State of Mississippi in 2002 and has been adopted and successfully used by several states. This guidance is intended to create consistency with those state programs. Evaluation of CP systems to ensure they are functioning as intended has pr ...
< 1 ... 73 74 75 76 77 78 79 80 81 ... 1974 >

Mains electricity



Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.
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