• 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
08 SFT2841 connected..
08 SFT2841 connected..

... SFT2841 connected EN 2007_01.ppt ...
Using “Normally on” JFETs in Power Systems
Using “Normally on” JFETs in Power Systems

Systems-Level Trade Studies of a Dual
Systems-Level Trade Studies of a Dual

... stationkeeping. The GEO mass benefits could be increased even further with a dual-mode SPT-140 subsystem, i.e. one that is designed for optimal performance in two different modes. This paper will present the results of systems-level trade studies of a dual-mode subsystem, based on the SPT-140 subsys ...
ZXCT1008 Description Pin Assignments
ZXCT1008 Description Pin Assignments

... Where RLOAD represents any load including DC motors, a charging ...
Operational Amplifiers: Basics and Design Aspects
Operational Amplifiers: Basics and Design Aspects

... Second, the supply voltages are not always of the same value and of opposite polarity (i.e. + 5V). Instead, the max value could be +10V while the low value could be 0V (or grounded) and vice versa, similar to Example 2 above. Finally, the output signal is clipped if it spans a larger voltage range t ...
BQ24010 数据资料 dataSheet 下载
BQ24010 数据资料 dataSheet 下载

... NOT reset). Charge is resumed when the temperature returns to the normal range. ...
A+ Guide to Managing and Maintaining your PC, 6e
A+ Guide to Managing and Maintaining your PC, 6e

... – Controls the amount of current flowing through device – Degree of resistance is measured in ohms A+ Guide to Managing and Maintaining your PC, 6e ...
ADP3629 数据手册DataSheet 下载
ADP3629 数据手册DataSheet 下载

... (OCP) shutdown signal to turn off the power devices (MOSFETs or IGBTs) in case of failure of the main controller. An accurate internal reference is used for the SD comparator so that it can be used to detect OVP or OCP fault conditions. ...
SN65MLVD20xx Multipoint-LVDS Line Driver
SN65MLVD20xx Multipoint-LVDS Line Driver

WARNING! - AR - RF Microwave Instrumentation
WARNING! - AR - RF Microwave Instrumentation

... The electrical length of the circuits between the splitter and the combiner must be matched (so that the 180° out-of-phase relationship will prevail across the full bandwidth, permitting efficient combining). To achieve this, phase-matched cable assemblies and adjustable line stretchers are used. Si ...
RUR1S1560S 15 A, 600 V, Ultrafast Diode Features
RUR1S1560S 15 A, 600 V, Ultrafast Diode Features

... No Identification Needed ...
flextec™450 - Red-D
flextec™450 - Red-D

... 5.a. Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases. When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep fumes and gases away from the breathing zone. When welding with electrodes which require special ...
How to use the BTRM in Remote Enclosures
How to use the BTRM in Remote Enclosures

AP1122  1A LOW DROPOUT POSITIVE REGULATOR Description
AP1122 1A LOW DROPOUT POSITIVE REGULATOR Description

... 2. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package. 3. Line and load regulatio ...
Analog Devices Welcomes Hittite Microwave Corporation
Analog Devices Welcomes Hittite Microwave Corporation

... The HMC321LP4 & HMC321LP4E are broadband nonreflective GaAs MESFET SP8T switches in low cost leadless surface mount packages. Covering DC to 8 GHz, this switch offers high isolation and low insertion loss. This switch also includes an on board binary decoder circuit which reduces the required logic ...
RSH070P05
RSH070P05

... No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products" ...
switches - (HOCL)
switches - (HOCL)

... 5. There should not be a failure of DC supply at load bus in the event of mains failure during boost charging or float charging. This shall be ensured by suitable DC link between battery and load. 6. Soft start feature shall be provide in the charger so that when the charger is switched ON, the outp ...
POWER MTS210D  MIG - TIG - MMA WELDING MACHINE OPERATION INSTRUCTIONS
POWER MTS210D MIG - TIG - MMA WELDING MACHINE OPERATION INSTRUCTIONS

... Make sure fuse or circuit breaker is correct rating for machine. Using fuses or circuit breakers smaller than recommended will result in nuisance shut off from welder inrush currents even if welding at low amperages. On multiple voltage input welders, be sure the machine is connected as per the inst ...
TG61B - CE Niehoff Co.
TG61B - CE Niehoff Co.

... greater the battery discharge level, the lower the system volts and the higher the system amps. The volt and amp readings will change as batteries recover and become fully charged: system volts will increase to regulator setpoint and system amps will decrease to low level (depending on ...
Experiment 4 - Plasma Dynamics Lab
Experiment 4 - Plasma Dynamics Lab

... Op-amp limitations: Just like all real circuit elements, op-amps have certain limitations which prevent them from performing optimally under all conditions. The one you are most likely to encounter in this class is called saturation. An op-amp becomes saturated if it tries to put out a voltage level ...
CSE-Semaphore Plus+ Manual
CSE-Semaphore Plus+ Manual

... MAINS POWER ...
MAX3228E/MAX3228AE/MAX3229E/MAX3229AE ±15kV ESD-Protected +2.5V to +5.5V RS-232 Transceivers in UCSP and WLP
MAX3228E/MAX3228AE/MAX3229E/MAX3229AE ±15kV ESD-Protected +2.5V to +5.5V RS-232 Transceivers in UCSP and WLP

... supply current with Maxim’s AutoShutdown™ feature. They save power without changes to existing BIOS or operating systems by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitters of the connected peripherals are off. The transceivers have a proprietary low-d ...
battery back-up manual
battery back-up manual

... If within the first 12 min of the charging cycle, the battery voltage exceeds 232 V, the BCS high trip sensor will become engaged and activate the BRH relay. This will engage CR7, which will deactivate PR1, thus preventing charging until the next on cycle. With the batteries on trickle charge, the b ...
Encoder Outputs Shouldn`t Fail - Nidec
Encoder Outputs Shouldn`t Fail - Nidec

... These seals make heat as the shaft spins against them; this heat adds to the ambient heat inside the encoder, and may cause the outputs to output less current, or even shut down intermittently. Select a manufacturer that fully rates the encoder for full output at maximum speed; many models are de-ra ...
SN55LVDS33-SP 数据资料 dataSheet 下载
SN55LVDS33-SP 数据资料 dataSheet 下载

... These LVDS data line receivers offers the widest common-mode input voltage range in the industry. These receivers provide an input voltage range specification compatible with a 5-V PECL signal as well as an overall increased ground-noise tolerance. They are in industry standard footprints with integ ...
< 1 ... 196 197 198 199 200 201 202 203 204 ... 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