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IEC-61968-2-DTR2
IEC-61968-2-DTR2

... intra-application integration, of the various distributed software application systems supporting the management of utility electrical distribution networks. Intra -application integration is aimed at programs in the same application system, usually communicatin g with each other using middleware th ...
microK manual
microK manual

... The microsKanner multiplexer can be connected to your microK Precision Thermometry Bridge to increase the number of input channels. Each multiplexer has 10 input channels and up to 9 microsKanners can be connected to a microK, providing you with up to 92 measurement/reference channels for each micro ...
IGBT Driver Calculation
IGBT Driver Calculation

... SEMIKRON reserves the right to make changes without further notice herein to improve reliability, function or design. Information furnished in this document is believed to be accurate and reliable. However, no representation or warranty is given and no liability is assumed with respect to the accura ...
H044023944
H044023944

... properly so that the customers can get undisturbed supply. Over current relay coordination can be done with utmost accuracy and tolerance using the MiPower software. MiPower software is very interactive and has user friendly windows based power system analysis package. Load flow studies and short ci ...
issue - IET Electrical
issue - IET Electrical

... IEE Wiring Matters is a quarterly publication from the Institution of Engineering and Technology (IET). The IET is not as a body responsible for the opinions expressed. ©2007: The Institution of Engineering and Technology. All rights reserved. No part of this publication may be reproduced, stored in ...
Controls Training Course
Controls Training Course

...  Explain how the development of the triac has made HVACR controls more versatile.  Explain the difference between a triac and a SCR.  Describe how a triac is Agated on and off.  Explain how and why triacs can be used on resistive and inductive loads.  Describe the operation of three-phase triac ...
Application Information
Application Information

IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)



Student Biographies
Student Biographies

... It is common to express the amplitude of the sine-wave signal in terms of its root-meansquare (rms) value, which is its peak value divided by the square root of two. Thus the rms value of the sinusoid on the previous page is Va divided by the square root of two.  For example a 120V wall ac power su ...
LT1993-2
LT1993-2

... The LT®1993-2 is a low distortion, low noise Differential Amplifier/ADC driver for use in applications from DC to 800MHz. The LT1993-2 has been designed for ease of use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-end ...
PLD Application Guide - Portable PA
PLD Application Guide - Portable PA

... Unfortunately, electronic power supplies—even the heavy line-frequency (non switch-mode) ones that are colloquially called “linear”—are actually highly nonlinear. As the use of electronic devices increases and resistive appliances such as incandescent lighting decreases, this nonlinearity presents a ...
Aalborg Universitet Harmonic Mitigation in Kilowatt-Scale Single-Phase Inverters
Aalborg Universitet Harmonic Mitigation in Kilowatt-Scale Single-Phase Inverters

TRUEPOWER COMBI MANUAL REV
TRUEPOWER COMBI MANUAL REV

... pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordanc ...
BDTIC
BDTIC

... The parameters listed in the datasheet are values that describe the characteristics of the module as detailed as possible. With this information, the designer should be able to compare devices from different suppliers to each other. Furthermore, the information should be sufficient to figure out the ...
HOW TO SPECIFY THE OPTIMUM NON-GAPPED LINE ARRESTERS (NGLA)
HOW TO SPECIFY THE OPTIMUM NON-GAPPED LINE ARRESTERS (NGLA)

MICROWAVE MONOLITHIC POWER AMPLIFIER DESIGN
MICROWAVE MONOLITHIC POWER AMPLIFIER DESIGN

... an analysis of the specifications that define the circuit. Depending on the intended application, a given MMIC PA may be described by a long and varied list of specifications. Most power amplifiers, however, do have some key performance parameters in common. An example specification for a microwave ...
AN11045 Next generation of NXP low VCEsat transistors: improved
AN11045 Next generation of NXP low VCEsat transistors: improved

... L1 shows a triangle shape if we assume a load condition where the converter runs in the so-called continuous mode. This means that the current through the inductor never goes AN11045 ...
Data Sheet
Data Sheet

MAX16055 - Maxim Part Number Search
MAX16055 - Maxim Part Number Search

... (µP) supervisory circuit monitors up to six system-supply voltages and asserts a single reset when any one supply voltage drops below its preset threshold. The device significantly reduces system size and component count while improving reliability compared to multiple ICs or discrete components. A ...
MAX3264
MAX3264

REVIEW OF UNCOUPLED, COUPLED INDUCTOR AND RCN
REVIEW OF UNCOUPLED, COUPLED INDUCTOR AND RCN

... The two phase interleaved boost converter consists of two identical boost converters connected in parallel and controlled by the interleaved method which has the same switching frequency and phase shift. It is used to eliminate reverse-recovery losses of the boost rectifier by operating the two boos ...
DS-100C I-V CURVE TRACER User Manual
DS-100C I-V CURVE TRACER User Manual

... Allow the tracer approximately 10 seconds to initialize. Then pressYes to retry as indicated on the error dialog box. Other errors occur if the PV array voltage is too high or if it is zero or negative. Simply follow the IVPC directions given when the error occurs. Most errors happen as soon as you ...
1.5-Gbps LVDS/LVPECL/CML-to
1.5-Gbps LVDS/LVPECL/CML-to

... Figure 24. Low-Voltage Positive Emitter-Coupled Logic (LVPECL) ...
Quickie® Pulse™ Service Manual
Quickie® Pulse™ Service Manual

... this reason, EMI from handheld devices is of special concern. A person using one of these devices can bring high levels of EM energy very close to a power chair without the user’s knowledge. Immunity level The level of EM is measured in volts per metre (V/m). Every power wheelchair can resist EMI up ...
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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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