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Shipboard Power Systems
Shipboard Power Systems

... • Port & Stbd busses isolated from each other. • Electric Transient on one bus does not affect the other ...
Electronic transformer for a 12V halogen lamp
Electronic transformer for a 12V halogen lamp

... eventually cause them to overheat and be destroyed. However, this current will also cause the voltage across RE to increase. This causes transistor TRS to turn on, which in turn prevents the diac from triggering the circuit at the start of each cycle. RS and CS serve to delay the turn-on of the tran ...
Littelfuse Introduces Single Fuse Solution for Applications that
Littelfuse Introduces Single Fuse Solution for Applications that

... Avoids need to parallel multiple fuses or over-spec industrial-type fuses to handle high currents NUREMBERG, GERMANY, May 17, 2017 — Littelfuse, Inc., the global leader in circuit protection, today introduced a series of UL approved high current, surface mount fuses in conjunction with the Power Con ...
Smart Panel - Remap Network
Smart Panel - Remap Network

... increased power controls and intelligent disconnect upon detection of current loss. This addresses the Rapid Shutdown requirements of NEC2014 and other national norms and standards. The evaluation unit combines the required sensing and MOSFET drive circuitry for module optimization, intelligent disc ...
YU191B Datasheet
YU191B Datasheet

... the load will minimize the RF field in the vicinity of the power amplifier unit itself. FAULT PROTECTION – In addition to normal cooling flow interlock and plate over-current interlock, it is good practice to protect the tube from internal damage which could result from occasional plate arcing at hi ...
stereo turntable amplifier
stereo turntable amplifier

... harmonic distortion and probably a few other distortions we haven’t named as yet. This problem is common to almost all existing preamps. A second common fault is designing too much gain into the input equalized state to compensate for a mediocre noise figure in the following output stage with the re ...
Product Brief - Axis AV Solutions
Product Brief - Axis AV Solutions

... A Powerful and Elegant Switching Solution ...
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Microelectromechanical Devices

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DESIGN AND FABRICATION OF SINGLE PHASE INDUCTION

... brushes on the commutator [1]. Principle of operation A single phase Ac motor with transformer action coupling between the windings of the stator and rotor. The stator is of non-salient pole design and has two series-connected windings, whose axes form a 90 degrees angle. The rotor is similar in des ...
A 1.07 Tbit/s 128×128 Swizzle Network for SIMD Processors
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... O(n), where n is the number of inputs/outputs, compared to O(n(logn)) in conventional switches. Simulation results in Fig. 4 compare a conventional crossbar to XRAM with increasing dimensions, showing the XRAM is 3.3× smaller, 37% faster, and saves 75% energy per bit transfer for large networks. It ...
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04 System voltage

... Another factor to consider regarding service voltage is the voltage regulation of the utility system. Voltages defined by the utility as “distribution” should, in most cases, have adequate voltage regulation for the loads served. Voltages defined as “subtransmission” or “transmission”, however, ofte ...
WC Alexander, “Universal power converter,” US Patent
WC Alexander, “Universal power converter,” US Patent

... Soft-switching ac-link universal power converter, also called partial resonant aclink converter and ac-link buck–boost converter, was introduced. Different applications of this converter have been studied. This converter has several advantages over the other types of converters. Being universal, the ...
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APPLICATION NOTE --- AN056 Output Return Loss Of High

... frequency, high power, high efficiency power amplifier design might, initially, seem to be straight forward. Although many of the design criteria are common, high power circuits require some special considerations that may not be applicable to their small signal counterparts. Some of the performance ...
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... Power or x86 architecture cores (symmetric multiprocessing or SMP). Driving this evolution are needs for dedicated silicon to process multimedia, graphics, baseband, etc., the need to sustain growth of compute capability without power-hungry high frequency clocks, and requirements to run multiple OS ...
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... ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. ...
ADM8828 数据手册DataSheet 下载
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... The positive terminal of C1 is connected to GND via S3 during this phase and the negative terminal of C1 connects to VOUT via S4. The net result is voltage inversion at VOUT wrt GND. Charge on C1 is transferred to C2 during φ2. Capacitor C2 maintains this voltage during φ1. The charge transfer effic ...
LM6142/LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers LM6142/LM6144, 17
LM6142/LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers LM6142/LM6144, 17

... as large as 1000pF at unity gain and not oscillate. The scope photos (Figure 3 and Figure 4) above show the LM6142 driving a l000pF load. In Figure 3, the upper trace is with no capacitive load and the lower trace is with a 1000pF load. Here we are operating on ± 12V supplies with a 20 VPP pulse. Ex ...
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T - Courses

full paper - e-JST
full paper - e-JST

... Present system is a model which shows cooperative task sharing in the form of relay race of robot. There each robot has separate address ID stored in it via programming. When module has got proper information on their ID detector which is basically a group of IR receiver, Whenever ID detector receiv ...
USC_ESRDC_26May2009_Overview 2009
USC_ESRDC_26May2009_Overview 2009

... • Better, more flexible, design and simulation tools. • Easier to program (or explore control space) advanced algorithms for ship-board power ...
Evakool Indel B 31 40 50 AC/DC Compressor Portable Fridge
Evakool Indel B 31 40 50 AC/DC Compressor Portable Fridge

... Evakool Indel B 31 40 50 AC/DC Compressor Portable Fridge / Freezer – Operation Manual sodium bicarbonate dissolved in lukewarm water to clean the unit. ...
RA600-8 Specifications PDF
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C41 Audio Control Center
C41 Audio Control Center

... EXCLUSIVE MCINTOSH TONE CONTROLS. Judicious use of well-designed bass and treble controls can compensate for acoustical irregularities. The C41’s tone controls offer ±12dB adjustments with fine resolution, yet in the “flat” position are completely removed from the signal path. CONTROL DATA OUTPUTS. ...
Loadlines Made Simpl..
Loadlines Made Simpl..

... How do we calculate gain if the datasheet for the tube does not contain any plate curves? We use this formula: Voltage Gain = (gm / 1000000) * Ra * Rp / (Ra + Rp) Where gm is the transconductance figure in micro-mhos (for example 1250 as given for the 12AX7 at Va =100v). In european datasheets you m ...
Contact Voltage
Contact Voltage

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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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