• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
General Description Features
General Description Features

Evaluates: MAX8758 MAX8758 Evaluation Kit General Description Features
Evaluates: MAX8758 MAX8758 Evaluation Kit General Description Features

Evaluate:  MAX1365–MAX1368 MAX1366 Evaluation Kit/Evaluation System General Description Features
Evaluate: MAX1365–MAX1368 MAX1366 Evaluation Kit/Evaluation System General Description Features

Lecture 7: RF front-end design LNA mixer
Lecture 7: RF front-end design LNA mixer

Physics 15b Lab 2: Current, Ohm`s Law
Physics 15b Lab 2: Current, Ohm`s Law

... 6. Consider a device with a voltage dependent resistance such that R= 1010 Ohms if the potential difference across the device is less than 0.6 V, and R=0.01 Ohms if the voltage is more than 0.6 V. Let the voltage difference across the device be V=2 Cos[wt]. Plot the voltage across the device as a fu ...
EE 3724 Introduction
EE 3724 Introduction

... Read the voltage from the potentiometer via the PIC A/D, write this digital value to the DAC. The DAC output voltage should match the potentiometer voltage. V 0.2 ...
Introduction to Power System Protection
Introduction to Power System Protection

... half cycle! ...
PAM2845
PAM2845

... The PAM2845 employs a current-mode step-up converter that drives six parallel strings of LEDs connected in multiple series. This built-in string current-control circuit achieves ±1% typical current matching between strings, which ensures even brightness for all LEDs. Separate feedback loops limit th ...
a new principle of digital fractional frequency synthesizer
a new principle of digital fractional frequency synthesizer

... A new design technique of the frequency synthesizer has been presented in this paper. The presented digital frequency synthesizer was patented in the Czech Republic. Schemes for direct and indirect synthesizers were shown and basic equations and block diagram were also described. The digital freque ...
Implementation Of Low Power 3-Bit Flash ADC Using
Implementation Of Low Power 3-Bit Flash ADC Using

... Tunable DG-MOSFET is presented. In DGMOSFET the gates surrounding the conducting channel ensure that a better control over the channel can be applied, which reduces the leakage currents, the drain induced barrier lowering (DIBL) effects, short channel effects and various other defaults of convention ...
Device Functions Numbers
Device Functions Numbers

... controls the intermittent energizing or acceleration of equipment typically at low speeds for synchronizing or positioning ...
Frequently asked questions about phase detectors
Frequently asked questions about phase detectors

INDUCTION MOTOR (squirrel cage)
INDUCTION MOTOR (squirrel cage)

... The harmonics in the mmf can be further reduced by increasing the number of slots: e.g. winding of a phase are placed in 12 slots: ...
INDUCTION MOTOR (squirrel cage)
INDUCTION MOTOR (squirrel cage)

... The harmonics in the mmf can be further reduced by increasing the number of slots: e.g. winding of a phase are placed in 12 slots: ...
CU900 SERIES Submittal Sheet
CU900 SERIES Submittal Sheet

... u Steel plate fin elements are copper brazed to low watt density, steel-sheathed tubular heating elements. (80/20 NiCh resistance wire). Element is finished with aluminized paint for corrosion resistance. Fins and elements are arranged in a uniform grid pattern and fit closely into the discharge ar ...
Phototriac
Phototriac

... Vishay has a wide range of phototriacs which span the gamut in terms of performance, features, and cost. Vishay’s phototriacs vary, in terms of break-down voltage, power rating, and a parameter which is most important when designing with phototriacs and TRIACs in general, dV/dt. Most of the applicat ...


Option Panel
Option Panel

underground cable fault distance locator
underground cable fault distance locator

MAX504/MAX515 5V, Low-Power, Voltage-Output, Serial 10-Bit DACs _______________General Description
MAX504/MAX515 5V, Low-Power, Voltage-Output, Serial 10-Bit DACs _______________General Description

... The MAX504/MAX515 use an “inverted” R-2R ladder network with a single-supply CMOS op amp to convert 10-bit digital data to analog voltage levels (see Functional Diagram). The term “inverted” describes the ladder network because the REFIN pin in current-output DACs is the summing junction, or virtual ...
MC34671, High Input Voltage 600mA Charger for Single-cell
MC34671, High Input Voltage 600mA Charger for Single-cell

TDA8947J 4-channel audio amplifier
TDA8947J 4-channel audio amplifier

... pin compatible with the TDA8944AJ and TDA8946AJ. The TDA8947J contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip. This gives maximum output power for all supply voltages and load conditions with no unnecessary audio holes. Almost any supply ...
A1304
A1304

... to the offset that can be produced at the output of the Hall sensor IC. This makes it difficult to process the signal while maintaining an accurate, reliable output over the specified operating temperature and voltage ranges. Chopper stabilization is a unique approach used to minimize Hall offset on ...
workbook_m_g_answers..
workbook_m_g_answers..

TGS2351-SM 数据资料DataSheet下载
TGS2351-SM 数据资料DataSheet下载

... The information contained herein is believed to be reliable. TriQuint makes no warranties regarding the information contained herein. TriQuint assumes no responsibility or liability whatsoever for any of the information contained herein. TriQuint assumes no responsibility or liability whatsoever for ...
< 1 ... 276 277 278 279 280 281 282 283 284 ... 1315 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report