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Embedded Solutions Through Targeted Power Conditioning
Embedded Solutions Through Targeted Power Conditioning

... © 2009 Electric Power Research Institute, Inc. All rights reserved. ...
Lightning and Surge Protection – Technical Note
Lightning and Surge Protection – Technical Note

... induced surges. SolarEdge recommends using external surge protection devices on the communication lines in sites with the following two properties: 1. The distance between devices is more than 10 m/33 ft 2. There is a risk of induced surges NOTE If the cables run in metal-grounded conduits, using an ...
Practical application of FACTS devices
Practical application of FACTS devices

Evaluating Critical VFD Cable Parameters
Evaluating Critical VFD Cable Parameters

Low-power LVDS for digital readout circuits
Low-power LVDS for digital readout circuits

... Slew rate of the differential output signal measured at room temperature for a gigabit-per-second rate of data input is 6.4E+9 V/ns which is approximately twenty times above the IEEE standard. Differential output signal has a 500 mV peak to peak swing and it swings around 600 mV the common mode volt ...
Report on Production testing September 04
Report on Production testing September 04

... • Production Testing Completed 8/25/04 – Production Test cuts very stringent – Will want to rerun after sorting to pick up additional good chips • Expect about 30+% of “Bad” chips to pass on a second pass ...
All-dielectric photonic-assisted radio front-end - jalali
All-dielectric photonic-assisted radio front-end - jalali

... for the electro– optic crystal is the position inside the DRA where the maximum RF field enhancement occurs. One of the objectives of finite-element simulations is to identify this location, which in turn depends on the resonant mode of the DRA. The design reported here takes advantage of the TM011þ ...
QUALITROL-IRIS POWER IS THE WORLD’S LARGEST PROVIDER OF MONITORING AND
QUALITROL-IRIS POWER IS THE WORLD’S LARGEST PROVIDER OF MONITORING AND

... each rotor slot. Any change in the ampere-turns within a coil due to shorted turns produces a change in the leakage flux. To measure the leakage flux, a flux probe sensor is permanently installed on the stator. During machine operation, the flux from each passing slot will induce a voltage in the fl ...
Leakage Current Modeling in PD SOI Circuits
Leakage Current Modeling in PD SOI Circuits

... Consider the inverter illustrated in Fig. 1, The floating body terminal of the nfet is capacitive coupled to its drain, source and gate terminals. Any variations in nfet source, drain and gate voltages also changes the body terminal voltage which in turn affects its device threshold voltage and the ...
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PE83513 - Peregrine Semiconductor
PE83513 - Peregrine Semiconductor

... the device input (pin 2) is connected via J1 and a 50Ω transmission line. A series capacitor (C3) provides the necessary DC block for the device input. It is important to note that the value of this capacitance will impact the performance of the device. A value of 1000pF was found to be optimal for ...
Leakage Power Reduction
Leakage Power Reduction

... Subthreshold leakage power will increase at a very rapid rate due to its strong dependence on the Vth Subthreshold leakage power will be comparable to the switching power in the 60–65 nm node ...
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... the gigabit Ethernet controllers ranges from 2 to 3W per port, depending on the link speed [3][4]. Power saving in gigabit Ethernet controllers has been commonly achieved by transitioning to more advanced semiconductor process technologies, (e.g., using 65nm and 45nm technology nodes) and/or by util ...
A Novel Approach of Position Estimation, PFC based Buck
A Novel Approach of Position Estimation, PFC based Buck

... are the most widely used because they naturally behave as voltage sources as required by many industrial applications, such as adjustable speed drives (ASDs), which are the most popular application of inverters. Similarly, these topologies can be found as current source inverters (CSIs), where the i ...
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is the DC-grid voltage.

... In order to allow standardization, not all voltage levels are possible. In reality the standardized voltages of 326 VDC, 230 VDC, 120 VDC, 48 VDC, 24 VDC, 12 VDC and finally 6 VDC can be taken into consideration. Many electronic appliances use a DC voltage which is obtained by rectifying the 230 VAC ...
Media Conversion Media Conversion
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... Twisted pair cables use two wires to carry data in one direction, and two wires to carry data in the reverse direction. Older generation Ethernet data ports can normally be configured by a push button or slide switch to allow them to transmit data on one pair, and receive on the other pair (MDI mode ...
Virtual Classroom Course Description Integrated Drives Control over an EtherNet/IP™ Network
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... network topology and relevant components, configure controllers and axes, and add Kinetix® 6500 and PowerFlex® 755 drives for control over an EtherNet/IP network (also known as CIP™ motion). This course will also show you how to start up the network, run hookup tests, autotune axes, and test axes wi ...
Portable Three-Phase Meter Site Source Analyzer
Portable Three-Phase Meter Site Source Analyzer

... or distorted, both types of waveforms are solely under the user’s control, and the test parameters can be repeated in the field or back at the shop. Using the RW-3X, the meter can be completely tested and analyzed for a wide range of repeatable test ...
ZIKA OWNER`S MANUAL  I-200c Premium/ I-250c
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MAGX-001214-250L00 GaN on SiC HEMT Pulsed Power Transistor Production V1
MAGX-001214-250L00 GaN on SiC HEMT Pulsed Power Transistor Production V1

... Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. Commitment to produce in volume is not guaranteed. ...
MAX1553 Evaluation Kit - Part Number Search
MAX1553 Evaluation Kit - Part Number Search

... Evaluating the MAX1553 Shutdown To place the part in low-power shutdown mode, short pins 1-2 of JU2. For normal operation, short pins 2-3 of JU2. Controlling LED Intensity LED intensity can be controlled using the BRT1 input. BRT1 can be used either as an analog or digital input. When using BRT1, re ...
B23011017
B23011017

... The increase of nonlinear loads due to the proliferation of electronic equipment causes power quality in the powersystem to deteriorate. Harmonic current drawn from a supply by the nonlinear load results in the distortion of the supply voltage waveform at the point of common coupling (PCC) due to th ...
AN5084, Hardware Design Guidelines for S12ZVL
AN5084, Hardware Design Guidelines for S12ZVL

... EMC performance. The MC9S12ZVL-Family delivers an optimized solution with the integration of several key system components into a single device, optimizing system architecture and achieving significant space savings. The MC9S12ZVLFamily delivers all the advantages and efficiencies of a 16-bit MCU wh ...
Aalborg Universitet Three-Phase Unbalanced Load Flow Tool for Distribution Networks
Aalborg Universitet Three-Phase Unbalanced Load Flow Tool for Distribution Networks

... among the phases, even though power flow is balanced along a distribution line. For this reason, unbalanced threephase load flow solution will require accurate modeling of distribution lines for the steady-state voltage analysis. Additionally, in reality, loads and distributed generators are usually ...
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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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