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B.4 Running Rail - to - Earth Resistance Test - Working Group
B.4 Running Rail - to - Earth Resistance Test - Working Group

... This standard provides field test and acceptance criteria for equipment once it is assembled and integrated as a complete traction power substation. Where there are field testing requirements for certain components addressed in other applicable standards, these standards are referenced in the approp ...
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X9520 - Intersil

... Converter (GBIC) applications. The combination of the X9520 fucntionality lowers system cost, increases reliability, and reduces board space requirements using Intersil’s unique XBGA™ packaging. Two high resolution DCPs allow for the “set-and-forget” adjustment of Laser Driver IC parameters such as ...
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Power Equipment and Engineering Standards
Power Equipment and Engineering Standards

... ordinances imposed by law. Detail engineering for Qwest sites shall meet all of the above references, as well as Qwest Standard Configuration Documents. The origin of this Technical Publication 77385 was in 1996. Prior to that point, power requirements for USWEST were contained in Module C of Techni ...
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... possible and that it has a specification of ±0.1% tolerance and ±50 ppm temperature drift or better. The 12-pF crystal, if used, should also be placed as close to the XCK1 (pin 34) and XCK2 (pin 33) pins as possible. The layout of the PCB around these pins and components is also an additional contri ...
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... ordinances imposed by law. Detail engineering for Qwest sites shall meet all of the above references, as well as Qwest Standard Configuration Documents. The origin of this Technical Publication 77385 was in 1996. Prior to that point, power requirements for USWEST were contained in Module C of Techni ...
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... Secondary Power Supply. Supply voltage must be held between 1.3V and 3.7V for proper operation. This pin can be connected to a primary cell, such as a lithium coin cell. Additionally, this pin can be connected to a rechargeable cell or a super cap when used in conjunction with the trickle-charge fea ...
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... charge controller available for standalone power supplies. It is the industry standard, field-proven way to assume complete control of your batterybased system. Dingo's highlysophisticated, adjustable regulation software is installed in tens of thousands of systems worldwide and charges at five sele ...
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... to ground voltage. To determine if a line-to-line 3-phase voltage exceeds the rating of this multimeter, multiply the rated line-to-ground voltage by 1.732 (the square root of 3). For example, if the rated line-to-ground voltage is 300 volts, the line-to-line voltage is 300 × 1.732 = 519.6 V AC. War ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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