MAX5039, MAX5040
... turns on, pulling the I/O voltage above the CORE voltage. At this point, the MAX5040 brings NDRV to GND and POK goes high. On power-down, when VCC drops low enough to bring VUVLO below VUVCC, SDO immediately falls, turning the I/O and CORE supplies off. Simultaneously POK falls, indicating power-dow ...
... turns on, pulling the I/O voltage above the CORE voltage. At this point, the MAX5040 brings NDRV to GND and POK goes high. On power-down, when VCC drops low enough to bring VUVLO below VUVCC, SDO immediately falls, turning the I/O and CORE supplies off. Simultaneously POK falls, indicating power-dow ...
Fundamentals for Surge protection
... electronic devices are finding their way into households. On average, an individual strike or damage from a surge voltage amounted to €800 in 2013. This is the highest level since statistics began. For non-private systems, however, the consequences of a failure are generally much more serious, such ...
... electronic devices are finding their way into households. On average, an individual strike or damage from a surge voltage amounted to €800 in 2013. This is the highest level since statistics began. For non-private systems, however, the consequences of a failure are generally much more serious, such ...
multimess
... Mains connection, setup and operation of the device must only be performed by qualified personnel. Qualified personnel as understood in the safety precautions of this manual are persons authorized to setup, ground and mark equipment, systems and wiring systems in accordance with applicable standards ...
... Mains connection, setup and operation of the device must only be performed by qualified personnel. Qualified personnel as understood in the safety precautions of this manual are persons authorized to setup, ground and mark equipment, systems and wiring systems in accordance with applicable standards ...
Alberta Interconnected Electric System Protection Standard
... of disturbances and faults on protected equipment, minimize the equipment removed from service during these conditions and at the same time allow the interconnected electric system to continue serving native Alberta load. Public safety and protection of workers in stations is also part of the protec ...
... of disturbances and faults on protected equipment, minimize the equipment removed from service during these conditions and at the same time allow the interconnected electric system to continue serving native Alberta load. Public safety and protection of workers in stations is also part of the protec ...
ASSA ABLOY Door Security Solutions
... 600 lbs. holding force Magnalock with automatic dual voltage. This model offers a built-in wire access chamber and bracket mount design for a unique and simplified method of installation. Recommended for applications where physical assault on the door is not expected, like access controlled interior ...
... 600 lbs. holding force Magnalock with automatic dual voltage. This model offers a built-in wire access chamber and bracket mount design for a unique and simplified method of installation. Recommended for applications where physical assault on the door is not expected, like access controlled interior ...
Previous Page Table of Contents Next...
... based at Peterson AFB, Colorado. The 302nd will receive 8 additional new Hercules aircraft in the coming months. ...
... based at Peterson AFB, Colorado. The 302nd will receive 8 additional new Hercules aircraft in the coming months. ...
Conduction Losses and Common Mode EMI Analysis on
... In Fig. 4, there are two Boost circuits in the BLPFC [8~9]. One can expect higher efficiency than Boost PFC with the same reason as Dual Boost PFC. And its EMI will be lower than Boost PFC, because not only the low frequency diodes D3 and D4 connect the output ground to the ac source but the symmetr ...
... In Fig. 4, there are two Boost circuits in the BLPFC [8~9]. One can expect higher efficiency than Boost PFC with the same reason as Dual Boost PFC. And its EMI will be lower than Boost PFC, because not only the low frequency diodes D3 and D4 connect the output ground to the ac source but the symmetr ...
Modeling of Eddy-Current Loss of Electrical Machines and Transformers
... proposed analytical methods on a three-phase transformer, a dc motor, and an induction motor with the results of time-stepping finiteelement analysis and experiments. We provide detailed equations for the prediction of iron losses. These equations can be directly applied in the design and control of ...
... proposed analytical methods on a three-phase transformer, a dc motor, and an induction motor with the results of time-stepping finiteelement analysis and experiments. We provide detailed equations for the prediction of iron losses. These equations can be directly applied in the design and control of ...
BL044389393
... In digital system the comparator is a very useful and basic arithmetic component. A compact, good cost benefit, high-performance ratio and LOW POWER comparator plays an important role in almost all hardware sorters. The basic function of a high-gain comparator is to determine whether an input voltag ...
... In digital system the comparator is a very useful and basic arithmetic component. A compact, good cost benefit, high-performance ratio and LOW POWER comparator plays an important role in almost all hardware sorters. The basic function of a high-gain comparator is to determine whether an input voltag ...
63-7062 - Variable Frequency Drive (VFD)
... Modern manufacturing techniques, using new technology Micro-Controllers, Digital Signal Processors, Application Specific Integrated Circuits (ASIC) and other highly integrated devices, have substantially reduced the VFD component count. Typically, VFD component counts have dropped from several thous ...
... Modern manufacturing techniques, using new technology Micro-Controllers, Digital Signal Processors, Application Specific Integrated Circuits (ASIC) and other highly integrated devices, have substantially reduced the VFD component count. Typically, VFD component counts have dropped from several thous ...
Novel Full Bridge Topologies for VRM Applications
... switching loss which limits the switching frequency of Buck; making it difficult to design a Buck based VRM that can achieve high efficiency at a high switching frequency. In this thesis three new non-isolated full bridge topologies will be introduced to solve the aforementioned problems of Buck. On ...
... switching loss which limits the switching frequency of Buck; making it difficult to design a Buck based VRM that can achieve high efficiency at a high switching frequency. In this thesis three new non-isolated full bridge topologies will be introduced to solve the aforementioned problems of Buck. On ...
Category 4
... the Utility electric system that is both safe and reliable. This document has been filed with the Michigan Public Service Commission (MPSC) and complies with rules established for the interconnection of parallel generation to the Utility electric system in the MPSC Order in Case No. U-15787. The ter ...
... the Utility electric system that is both safe and reliable. This document has been filed with the Michigan Public Service Commission (MPSC) and complies with rules established for the interconnection of parallel generation to the Utility electric system in the MPSC Order in Case No. U-15787. The ter ...
What is Plasma
... RF power couples through the wafer like a capacitor On-average, the wafer is biased negative (attracts ions) ...
... RF power couples through the wafer like a capacitor On-average, the wafer is biased negative (attracts ions) ...
Owner`s Manual
... change from indicating status information to OFF. Press the CHARGE switch once. One of the four LEDs will blink rapidly, indicating the existing battery type selection. Press the CHARGE switch again to change the battery type. Continue to press until the desired battery type is selected. If the CHAR ...
... change from indicating status information to OFF. Press the CHARGE switch once. One of the four LEDs will blink rapidly, indicating the existing battery type selection. Press the CHARGE switch again to change the battery type. Continue to press until the desired battery type is selected. If the CHAR ...
1.01 summary
... STATIC UNINTERRUPTIBLE POWER SUPPLY GUIDE SPECIFICATION Eaton 93PM 20-120 kW UL 924 Emergency Lighting and Power UPS PART 1 - GENERAL ...
... STATIC UNINTERRUPTIBLE POWER SUPPLY GUIDE SPECIFICATION Eaton 93PM 20-120 kW UL 924 Emergency Lighting and Power UPS PART 1 - GENERAL ...
Ground Fault Circuit Interrupters
... Figure 2 is similar to Figure 1, except that the core is not being used to develop a voltage in the secondary. In this case, the hot conductor passes around the iron core to the load and then the current is returned via the neutral conductor, which is also wrapped around the iron core. The primary, ...
... Figure 2 is similar to Figure 1, except that the core is not being used to develop a voltage in the secondary. In this case, the hot conductor passes around the iron core to the load and then the current is returned via the neutral conductor, which is also wrapped around the iron core. The primary, ...
The Diode
... A semiconductor diode's current–voltage characteristic, or I–V curve, is related to the transport of carriers through the so-called depletion layer or depletion region that exists at the p-n junction between differing semiconductors. When a p-n junction is first created, conduction band (mobile) el ...
... A semiconductor diode's current–voltage characteristic, or I–V curve, is related to the transport of carriers through the so-called depletion layer or depletion region that exists at the p-n junction between differing semiconductors. When a p-n junction is first created, conduction band (mobile) el ...
MP-5400 Series Electronic Positive Positioning Hydraulic Actuator
... 1. Install all two-way valves so that they close against the flow. An arrow on the valve body ...
... 1. Install all two-way valves so that they close against the flow. An arrow on the valve body ...
Power engineering
Power engineering, also called power systems engineering, is a subfield of energy engineering that deals with the generation, transmission, distribution and utilization of electric power and the electrical devices connected to such systems including generators, motors and transformers. Although much of the field is concerned with the problems of three-phase AC power – the standard for large-scale power transmission and distribution across the modern world – a significant fraction of the field is concerned with the conversion between AC and DC power and the development of specialized power systems such as those used in aircraft or for electric railway networks. It was a subfield of electrical engineering before the emergence of energy engineering.Electricity became a subject of scientific interest in the late 17th century with the work of William Gilbert. Over the next two centuries a number of important discoveries were made including the incandescent light bulb and the voltaic pile. Probably the greatest discovery with respect to power engineering came from Michael Faraday who in 1831 discovered that a change in magnetic flux induces an electromotive force in a loop of wire—a principle known as electromagnetic induction that helps explain how generators and transformers work.In 1881 two electricians built the world's first power station at Godalming in England. The station employed two waterwheels to produce an alternating current that was used to supply seven Siemens arc lamps at 250 volts and thirty-four incandescent lamps at 40 volts. However supply was intermittent and in 1882 Thomas Edison and his company, The Edison Electric Light Company, developed the first steam-powered electric power station on Pearl Street in New York City. The Pearl Street Station consisted of several generators and initially powered around 3,000 lamps for 59 customers. The power station used direct current and operated at a single voltage. Since the direct current power could not be easily transformed to the higher voltages necessary to minimise power loss during transmission, the possible distance between the generators and load was limited to around half-a-mile (800 m).That same year in London Lucien Gaulard and John Dixon Gibbs demonstrated the first transformer suitable for use in a real power system. The practical value of Gaulard and Gibbs' transformer was demonstrated in 1884 at Turin where the transformer was used to light up forty kilometres (25 miles) of railway from a single alternating current generator. Despite the success of the system, the pair made some fundamental mistakes. Perhaps the most serious was connecting the primaries of the transformers in series so that switching one lamp on or off would affect other lamps further down the line. Following the demonstration George Westinghouse, an American entrepreneur, imported a number of the transformers along with a Siemens generator and set his engineers to experimenting with them in the hopes of improving them for use in a commercial power system.One of Westinghouse's engineers, William Stanley, recognised the problem with connecting transformers in series as opposed to parallel and also realised that making the iron core of a transformer a fully enclosed loop would improve the voltage regulation of the secondary winding. Using this knowledge he built a much improved alternating current power system at Great Barrington, Massachusetts in 1886. In 1885 the Italian physicist and electrical engineer Galileo Ferraris demonstrated an induction motor and in 1887 and 1888 the Serbian-American engineer Nikola Tesla filed a range of patents related to power systems including one for a practical two-phase induction motor which Westinghouse licensed for his AC system.By 1890 the power industry had flourished and power companies had built thousands of power systems (both direct and alternating current) in the United States and Europe – these networks were effectively dedicated to providing electric lighting. During this time a fierce rivalry in the US known as the ""War of Currents"" emerged between Edison and Westinghouse over which form of transmission (direct or alternating current) was superior. In 1891, Westinghouse installed the first major power system that was designed to drive an electric motor and not just provide electric lighting. The installation powered a 100 horsepower (75 kW) synchronous motor at Telluride, Colorado with the motor being started by a Tesla induction motor. On the other side of the Atlantic, Oskar von Miller built a 20 kV 176 km three-phase transmission line from Lauffen am Neckar to Frankfurt am Main for the Electrical Engineering Exhibition in Frankfurt. In 1895, after a protracted decision-making process, the Adams No. 1 generating station at Niagara Falls began transmitting three-phase alternating current power to Buffalo at 11 kV. Following completion of the Niagara Falls project, new power systems increasingly chose alternating current as opposed to direct current for electrical transmission.Although the 1880s and 1890s were seminal decades in the field, developments in power engineering continued throughout the 20th and 21st century. In 1936 the first commercial high-voltage direct current (HVDC) line using mercury-arc valves was built between Schenectady and Mechanicville, New York. HVDC had previously been achieved by installing direct current generators in series (a system known as the Thury system) although this suffered from serious reliability issues. In 1957 Siemens demonstrated the first solid-state rectifier (solid-state rectifiers are now the standard for HVDC systems) however it was not until the early 1970s that this technology was used in commercial power systems. In 1959 Westinghouse demonstrated the first circuit breaker that used SF6 as the interrupting medium. SF6 is a far superior dielectric to air and, in recent times, its use has been extended to produce far more compact switching equipment (known as switchgear) and transformers. Many important developments also came from extending innovations in the ICT field to the power engineering field. For example, the development of computers meant load flow studies could be run more efficiently allowing for much better planning of power systems. Advances in information technology and telecommunication also allowed for much better remote control of the power system's switchgear and generators.