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AN2063 - STMicroelectronics
AN2063 - STMicroelectronics

... the low minimum operation current with the typical value of 150 A. This feature is quite useful, because the biasing resistor can be removed without any voltage regulation performance loss. With this device, the power losses can be saved on the biasing resistor with typical value of 5-8 mW. The TL43 ...
Dynamic Performance of the Interline Unified Power Flow Controller
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... variable amplitude and phase angle, which is added to the AC transmission line by the series connected boosting transformer. The inverter output voltage injected in series with the line can be used for direct voltage control, series compensation, phase shifting, and their combinations. This voltage ...
2016 China International Conference on Electricity Distribution
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... PLC is a communication protocol that uses electrical wiring to simultaneously carry both data and electric power transmission or electric power distribution. With the development of science and technology, the application fields of PLC technology will not be limited to the production and operation o ...
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FlexSEA-Execute: Advanced Motion Controller for Wearable Robotic

... cables, connectors, and application-specific integrated circuits (ASICs). They add to the cost, volume and complexity of the system. RS-485 is often associated with old technology [17] but its simplicity, low cost, robustness and speed (theoretically up to 100Mbps; 4Mbps achievable in our applicatio ...
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... Hence, the space inside a power electronic module can be used more efficiently adding to the target set for the power density criteria. To achieve the current carrying capability wanted in this project, the paralleling of two dies per device within each switch became mandatory and so using a total ...
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... system. According to type of situation that confronts the planner in laying out the distribution system the urban distribution, system presents many challenges to the planner. The urban distribution system has loop-based layout as it requires much higher reliability to be inbuilt in the design itsel ...
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Power over Ethernet



Power over Ethernet or PoE describes any of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras. Unlike standards such as Universal Serial Bus which also power devices over the data cables, PoE allows long cable lengths. Power may be carried on the same conductors as the data, or it may be carried on dedicated conductors in the same cable.There are several common techniques for transmitting power over Ethernet cabling. Two of them have been standardized by IEEE 802.3. Since only two of the four pairs are needed for 10BASE-T or 100BASE-TX, power may be transmitted on the unused conductors of a cable. In the IEEE standards, this is referred to as Alternative B. Power may also be transmitted on the data conductors by applying a common-mode voltage to each pair. Because twisted-pair Ethernet uses differential signalling, this does not interfere with data transmission. The common mode voltage is easily extracted using the center tap of the standard Ethernet pulse transformer. This is similar to the phantom power technique commonly used for powering audio microphones. In the IEEE standards, this is referred to as Alternative A.In addition to standardizing existing practice for spare-pair and common-mode data pair power transmission, the IEEE PoE standards provide for signalling between the power sourcing equipment (PSE) and powered device (PD). This signaling allows the presence of a conformant device to be detected by the power source, and allows the device and source to negotiate the amount of power required or available. Up to a 25.5 watts is available for a device.
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