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paper
paper

... As shown in Fig. 4, allowing for adjustable termination means that part of the termination impedance is determined by the transistor on-resistance, Ron. We need to find this value to reliably interpret measurements and can determine it by assuming that that the local variation in the passive compone ...
Principles and Applications of Electronic Devices and Circuits Unit
Principles and Applications of Electronic Devices and Circuits Unit

High-voltage Thyristors for HVDC and Other Applications
High-voltage Thyristors for HVDC and Other Applications

... and more important, because of their cost effective performance. Existing MV drive products range between 2.3 and 7.2 kV, tending to higher voltages of up to 15 kV. The main drives are mostly built with IGBT modules in inverters with two or more levels. For high-end voltage and power systems, Press ...
this PDF file - European Scientific Journal
this PDF file - European Scientific Journal

... technology scaling. Thus, while the state-of-the-art pipelined ADCs has exceeded 100MS/S (mega-samples-per-second) in CMOS technology [2-4]. The commonly achieved resolution is still bound within the range of 8-12 Effective-Number-of-Bits (ENOBs) due to the limitations set by component mismatches an ...
Design procedures for small synchronous generators with interior
Design procedures for small synchronous generators with interior

BM6209FS - ROHM Semiconductor
BM6209FS - ROHM Semiconductor

... Pulse width duty is controlled during PWM switching in order to ensure the operation of internal power transistor. The controller doesn’t output pulse of less than TMIN (0.8µs minimum). Dead time is forcibly provided to prevent external power transistors to turn-on simultaneously in upper and lower ...
MAX4376/MAX4377/MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain General Description
MAX4376/MAX4377/MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain General Description

... To measure lower currents more accurately, use a high value for RSENSE. The high value develops a higher sense voltage that reduces offset voltage errors of the internal op amp. In applications monitoring very high currents, RSENSE must be able to dissipate the I2R losses. If the resistor’s rated po ...
Harmonic Filter Bank Tuning - Northeast Power Systems, Inc.
Harmonic Filter Bank Tuning - Northeast Power Systems, Inc.

... bank is usually the best choice. A partially tuned bank offers less risk and is typically less costly than a tuned filter bank. Tuned Filters (Tuning between 4.8 and 5.0) If harmonic filters are being considered only for the purpose of reducing the harmonic distortion to acceptable limits, then a tu ...
50-mA, 24-V, 3.2-μA Supply Current Low
50-mA, 24-V, 3.2-μA Supply Current Low

... voltage, low-power operation, and miniaturized packaging. The devices, which operate over an input range of 2.5 V to 24 V, are stable with any capacitor greater than or equal to 0.47 μF. The low dropout voltage and low quiescent current allow operation at extremely low power levels. Therefore, the d ...
MTP1N60E Power MOSFET 1 Amp, 600 Volts
MTP1N60E Power MOSFET 1 Amp, 600 Volts

DC-AC Inverters - Samlex America
DC-AC Inverters - Samlex America

... Although your power inverter has the capacity to provide power output (excess current) equal to approximately two times its rated wattage capacity for a very brief period, it is designed to operate equipment and appliances with start up load wattage ratings no higher than its own maximum continuous ...
Description  AP67-FWLC-C6LA Transceiver Pluggable OC-24 WDM-PON OLT SFP Transceiver with Fiber Pigtail
Description AP67-FWLC-C6LA Transceiver Pluggable OC-24 WDM-PON OLT SFP Transceiver with Fiber Pigtail

... Note 1: Tx_Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pul ...
Three Phase Transformers
Three Phase Transformers

... As can be seen, primary taps at 120-V and 208-V are available using terminals H2-H3 and H4 respectively. In commercial applications, 120-V is a common voltage level. This is typically obtained by splitting a 240-V winding. Alternatively, 120-V can be obtained from the line-toneutral voltage of a 208 ...
BD6072HFN
BD6072HFN

... BD6072HFN is a fixed frequency PWM current mode DC/DC converter, and adopts synchronous rectification architecture (Refer to the Block Diagram of p.3). As for the inputs of the PWM comparator as the feature of the PWM current mode, one is overlapped with error components from the error amplifier, an ...
VFC320 - Texas Instruments
VFC320 - Texas Instruments

CA3162 Datasheet
CA3162 Datasheet

... All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes ...
CA3162
CA3162

Audio Alto
Audio Alto

Zeng-etal-IEEE-TOIE-2015-Analysis-and-control-of
Zeng-etal-IEEE-TOIE-2015-Analysis-and-control-of

... the MMC, affecting the capacitor voltage in the sub-modules (SM) and the energy variation in each arm, but it does not affect the ac side current (differential-mode current). Many control strategies have been developed such as circulating current control [15-18] and energy-based modeling control [19 ...
CN-0270:完整的4 mA至20 mA HART解决方案
CN-0270:完整的4 mA至20 mA HART解决方案

... and in a wide range of standoff and breakdown voltage ratings. Size the TVS with the lowest breakdown voltage possible while not conducting in the functional range of the current output. It is recommended that all remotely connected nodes be protected. In many process control applications, it is nec ...
BM6209FS
BM6209FS

CDR with loop filter
CDR with loop filter

Roll-ur-Own Crowbar OV Module.
Roll-ur-Own Crowbar OV Module.

... Although you may never need the protections Z-24 offers, I don’t recommend you go flying without it. It is EASY to prevent battery dump damage to the alternator by controlling sequence of operation for the switches. [a] Battery master is the first switch to come on before cranking the engine and it ...
NCP120 - 150mA, Very Low Dropout Bias Rail CMOS Voltage
NCP120 - 150mA, Very Low Dropout Bias Rail CMOS Voltage

... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marki ...
TEMPUS: VOLTAGE AND FREQUENCY DROOP CONTROL 1
TEMPUS: VOLTAGE AND FREQUENCY DROOP CONTROL 1

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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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