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Aalborg Universitet Hierarchical Control for Voltage Harmonics Compensation in Multi-Area Microgrids
Aalborg Universitet Hierarchical Control for Voltage Harmonics Compensation in Multi-Area Microgrids

... OMBINATION of Distributed Generators (DGs), energy storages and loads in a small-scale grid is called Microgrid. Microgrids may operate as connected to main grid (grid-connected) or isolated from that (islanded). DGs are usually connected to microgrids by power electronic interface converters. To re ...
Shrink wrapping machines [Wrapping machines]
Shrink wrapping machines [Wrapping machines]

... Harmonics can be avoided by installing an external "reactor". To decrease "harmonics", we recommend to install DC reactors in all our inverter models. (NOTE: 100V input models require AC reactors.) ...
1969 , Volume , Issue June-1969
1969 , Volume , Issue June-1969

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Lecture 37: CMOS Digital Logic Inverter.
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... 2. The static power dissipation is nearly zero (a fraction of a W) in both states. The dynamic power dissipation is not zero as the gates are changing states. 3. Low output resistance in either state: low resistance to ground in the “low” output state, and low resistance to VDD in the “high” state. ...
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Presentation - International Spacewire Conference 2008

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CBC early test report - Mark Raymond

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... off after a TON delay. The device then stays off for a period, TOFF, that is 32 times the TON delay. The device then begins pulsing on and off at the TON /(TON+TOFF) duty cycle of 3%. This drastically reduces the power dissipation during short circuit such that heat sinking, if at all required, must ...
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... 2) Power on Electronics Board power supplies: VddOD, Vsub, board supplies, clock rails supplies (not parallel clock rails). 3) Enable low voltage power supplies to CABAC. 4) Set clock rail DACs (and power on parallel clock rails) so that for each type of clock either the low clock rail or the high c ...
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... position to produce a high potential which may Referring to the drawing, there is shown an be recti?ed and supplied to the anode of the 20 output power tube I which applies current to the cathode ray tube. When the same transformer horizontal de?ecting coils 2, 3 of the cathode ray is employed in bo ...
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... EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for i ...
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... low/high level offset. • Histograms of D.C. input for low/high levels • Histograms of dynamic step input on even/odd channels • Sinewave input to get frequency spectrum • Sinewave input to get DNL, and maximum INL ...
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... reactance of the transmission line and forces the transmission voltage and current to be in phase (a good thing). This process is called “line compensation.” The inductive reactance of a transmission line is proportional to both frequency and line length, and for long ac lines the inductive reactan ...
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HMC590LP5 数据资料DataSheet下载

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GE Controls | Installation Guide | Centralized Lighting Control Panel

... These instructions do not cover all details or variations in equipment nor do they provide for every possible contingency that may be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise that are not covered for the ...
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... required to detect the insertion and removal of a monitor and automatically connect the graphics controller when a monitor is detected. A switched 5V output provides up to 55mA to the VGA port in addition to normal VGA signals. The MAX14984 features a single active-low enable input to control two 5V ...
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... at every zero crossing of phase a supply voltage. The sampling can also be performed at a quarter-cycle depending up on the symmetry of the dc link voltage wave form. The drawback of this conventional controller is that its transient response is slow, especially for fast changing loads. Also, the de ...
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R25400 - Zeftronics

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Motorola MC145436A - Telephone Tribute

Specifying de-rating factors.
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... This screen is used to define all factors to be applied to the luminaire. ...
< 1 ... 1172 1173 1174 1175 1176 1177 1178 1179 1180 ... 2646 >

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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