• 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
TPS6212x 15-V, 75-mA Highly Efficient Buck
TPS6212x 15-V, 75-mA Highly Efficient Buck

... The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications. With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency ...
Current Sensing Chip Resistors
Current Sensing Chip Resistors

Foil Heaters
Foil Heaters

... FH: Prefix for foil heater. 3: Width of heater from which side the lead comes out. 6: Length of heater. 50W: Voltage. 120V: Voltage. SF1-12: Lead type and length. SF11A: Terminal if required. A: Construction of heater (specify A, B or C). 4: The number of passes of element inside the foil (generally ...
Pumps - Grundfos
Pumps - Grundfos

Optimization of LDMOS Transistor in Power Amplifiers for Communication Systems
Optimization of LDMOS Transistor in Power Amplifiers for Communication Systems

DP0150ADJ / DP0150BDJ Features Mechanical Data
DP0150ADJ / DP0150BDJ Features Mechanical Data

... Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use o ...
b. notes E283C2
b. notes E283C2

to this file: /ucq_series
to this file: /ucq_series

... (1) All models are tested and specified with external 1||10 µF ceramic/tantalum output capacitors no external input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test equipment and may not be required to achieve specified performance in your applicat ...
Subthreshold FinFET for Low Power Circuit Operation: A Study of
Subthreshold FinFET for Low Power Circuit Operation: A Study of

... devices such as cellular phones and PDAs, for example require extremely low power consumption [1], [6]. It is for such applications that subthreshold operation of circuits provides highly reduced power consumption in return for a speed penalty. Subthreshold circuits are the most effective to achieve ...
DATA  SHEET UDA1334ATS Low power audio DAC with PLL
DATA SHEET UDA1334ATS Low power audio DAC with PLL

... The UDA1334ATS has an internal Power-on reset circuit (see Fig.3) which resets the test control block. The reset time (see Fig.4) is determined by an external capacitor which is connected between pin Vref(DAC) and ground. The reset time should be at least 1 μs for Vref(DAC) < 1.25 V. When VDDA is sw ...
- Connect Innovate UK
- Connect Innovate UK

... - grounding is a complex issue and there are many different approaches to designing grounding in an electrical power distribution system: depending on factors such as the actual voltages involved and the general system lay-out, DC power grids may be ungrounded, high-resistance grounded, or low-resis ...
LinAire Test Panels LTS-525/A TEST SET FOR THE
LinAire Test Panels LTS-525/A TEST SET FOR THE

DS1181L 20MHz to 134MHz Spread-Spectrum Clock Modulator for LCD Panels General Description
DS1181L 20MHz to 134MHz Spread-Spectrum Clock Modulator for LCD Panels General Description

... 20MHz to 134MHz and delivers a spread-spectrum modulated output clock signal. The PLL modulates, or dithers, the output clock about the center input frequency at a pin-selectable magnitude, allowing direct EMI control and optimization. In addition, through an enable pin the dithering can be enabled ...
High Voltage Power Capacitors Three
High Voltage Power Capacitors Three

... has a separate internal fuse. In addition, each capacitor is provided with an internal discharge resistor. All capacitors have low losses, and are constructed to be light in weight. The high voltage power capacitors comply with most national and international capacitor standards. ...
NA-277 277V to 120V Step Down Transformer
NA-277 277V to 120V Step Down Transformer

... Steps 277 volts line voltage down to 120 volts. Attaches to knockout on first fixture's junction box in a circuit and is 300VA, 150VA or 50VA rated. NA-277 is a UL Recognized component. To calculate usable load, de-rated by 25%. ...
High Power Flyback Controller with Primary
High Power Flyback Controller with Primary

... Open Frame SMPS for Industrial, Printer, White Goods, LCD Monitors Energy Efficient AC-DC Supplies for Nominal Power 10-W to 65-W, (with up to 200% transient peak power) ...
Chapter 19 Analog Input/Output Expansion Board
Chapter 19 Analog Input/Output Expansion Board

X20(c)BR9300 - Multiway Control System
X20(c)BR9300 - Multiway Control System

... X20 bus receiver, X2X Link, supply for X2X Link and internal I/O supply, X20 locking plates (left and right) X20AC0SL1/ X20AC0SR1 included X20 bus receiver, coated, X2X Link, supply for X2X Link and internal I/O supply, X20 locking plates (left and right) X20AC0SL1/ X20AC0SR1 included ...
1 - North American SynchroPhasor Initiative
1 - North American SynchroPhasor Initiative

... This white paper intends to provide information on and be a resource for such PMU placement issues, using recently developed PMU placement documents from various power grid operators and from applications described in technical papers.1 This white paper offers some guidelines for designers and users ...
Crate PSU Stress Analysis
Crate PSU Stress Analysis

Temperature sensors and voltage references implemented in CMOS
Temperature sensors and voltage references implemented in CMOS

... circuit are used as in bandgap references. The main difference between both types of circuits is that, in bandgap references, is added to the base-emitter voltage the PTAT voltage , in order to compensate for its temperature coefficient, is while in temperature sensors, the base-emitter voltage in o ...
eC-test-mate - Eurocircuits
eC-test-mate - Eurocircuits

... The eC-test-mate is a family of portable devices for production testing of printed circuit boards (PCBs). The devices (Test Heads) are controlled by a command language on a PC to which they are connected via USB. Each Test Head type provides a fixed number of functions. By combining multiple Test He ...
Design of Power and Delay Efficient 32 Bit X 32 Bit Multi
Design of Power and Delay Efficient 32 Bit X 32 Bit Multi

ADC0831,ADC0832,ADC0834,ADC0838
ADC0831,ADC0832,ADC0834,ADC0838

OPAx22x High Precision, Low Noise
OPAx22x High Precision, Low Noise

... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absol ...
< 1 ... 213 214 215 216 217 218 219 220 221 ... 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