• 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
MUR8100E, RURP8100 8 A, 1000 V Ultrafast Diodes
MUR8100E, RURP8100 8 A, 1000 V Ultrafast Diodes

... Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild’s quality standards for handing and storage and provide access to Fairchild’s ...
Minimizing Distortion in Operational Transconductance Amplifiers
Minimizing Distortion in Operational Transconductance Amplifiers

... Since Io is linearly related to Iabc , one solution would be to apply the input signal to the control port at Iabc . Unfortunately, the input signal must be applied to Vi since it is bipolar. If the control port Iabc could accept both positive and negative currents, then it could be used for the sig ...
MPU4 FIELD SERVICE MANUAL
MPU4 FIELD SERVICE MANUAL

... If the TEST switch is depressed a second time or the refill key is turned the triac drives (payout devices, lockouts, and refill meter) will be pulsed once and in sequence. This also applies to the 12V meters, but in addition any problems in sensing the meters will be displayed on the alphanumeric d ...
P84454
P84454

... If this appliance is required to produce a distinctive three-pulse Temporal Pattern Fire Alarm Evacuation Signal (for total evacuation) in accordance with NFPA 72, the appliance must be used with a fire alarm control unit that can generate the temporal pattern signal. Refer to manufacturer’s instal ...
Standard single purpose processors
Standard single purpose processors

... Stepper motors obviously abound in embedded systems with moving parts, such as disk drivers, printers, photocopy and fax machines. A stepper motor has four coils. To rotate the motor one step, we pass current through one or two of the coils. Stepper motor comes with four inputs corresponding to the ...
Cap-Free NMOS 400-mA Low-Dropout Regulators With Reverse
Cap-Free NMOS 400-mA Low-Dropout Regulators With Reverse

... element in a voltage-follower configuration. This topology is stable using output capacitors with low ESR and allows operation without a capacitor. It also provides high reverse blockage (low reverse current) and ground-pin current that is nearly constant over all values of output current. The TPS73 ...
features htrs series digital encapsulated repeat cycle time delay
features htrs series digital encapsulated repeat cycle time delay

Reference Materials - Jefferson Electric
Reference Materials - Jefferson Electric

... The transformer should be connected only as described on the nameplate or the wiring diagram inside the wiring compartment cover, or as otherwise specifically authorized. Transformers without terminal boards, usually the smaller size transformers, provide leads for connections. IMPORTANT: Any unused ...
LTC1569-7 - Linear Technology
LTC1569-7 - Linear Technology

... For dual supply operation, connect Pin␣ 3 to a high quality DC ground. A ground plane should be used. A poor ground will increase DC offset, clock feedthrough, noise and distortion. ...
IS31AP2110
IS31AP2110

... IS31AP2110 provides parallel BTL (Mono) application, and it can deliver 40W into 4 loudspeaker within 0.11% THD+N. The adjustable power limit function allows user to set a voltage rail lower than half of 3.3V to limit the amount of current through the speaker. Output DC detection prevents speaker d ...
FJPF2145 ESBC Rated NPN Power Transistor ™
FJPF2145 ESBC Rated NPN Power Transistor ™

... applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from ...
AL5811 Description Pin Assignments
AL5811 Description Pin Assignments

electromagnetic interference of high
electromagnetic interference of high

... electric field intensity reaches the critical value of the conductors, which is sufficient to give rise to incomplete self-discharge, which is limited to a narrow layer around the conductors. This discharge is called corona. Manifestation of the corona is weakly luminescent layer, which leads the pa ...


... PEMFCs are the most popular type of Fuel Cells (F Cs) and traditionally use hydrogen as the fuel. One FC problem is its relative slow dynamics caused by the time constant of the hydrogen and oxygen supply systems that can be in the range of several seconds. In this sense, supercapacitors (SCs) respo ...
Aalborg Universitet Generation Systems With Battery Energy Storage
Aalborg Universitet Generation Systems With Battery Energy Storage

... Mode III: Vdc_ref= Vdc_n=200V. In this mode, the system operates with connection to AC grid through bi-directional DC/AC converters. The DC bus voltage is regulated by the DC/AC converters through inversion, which means the generated PV power is greater than the local load demands. The modular DC/DC ...
ES-ALT-xxx-3-SW_B1
ES-ALT-xxx-3-SW_B1

... c. The equipment shall provide Sequence On / Simultaneous Off control. 1) The equipment shall turn on one load when the Lead switch closes and two loads when the Lag switch closes. 2) The equipment shall turn off both loads when all three switch inputs are open. d. The equipment shall include an adj ...
final thesis surena neshvad - ORBilu
final thesis surena neshvad - ORBilu

Technical Notes Noise Filters
Technical Notes Noise Filters

... EMI filter are high in reality, however, voltages higher than the rated voltage of the EMI filter may be used without causing any trouble. In fact, the rated voltages of filter components are often higher, in which case the filter can handle actual voltages that exceed its ratins. In the case of som ...
RSDA-660-75-100 Datasheet
RSDA-660-75-100 Datasheet

... solid state circuitry, including consistency of operation and a typically longer usable lifetime. This is possible because the SSR has no moving parts to wear out or arcing contacts to deteriorate, which are primary causes of failure of an electromechanical relay. When properly applied, an SSR will ...
The Secret Life of XY Monitors
The Secret Life of XY Monitors

... The Control Grid (called G1) is operated with a negative bias with respect to the Cathode (typically around 50V.) and acts to repel the electrons coming from the Cathode. The reason for doing this is that the Screen Grid (G2) is operated at a voltage that is higher than the Cathode (typically severa ...
P84719
P84719

... If this appliance is required to produce a distinctive three-pulse Temporal Pattern Fire Alarm Evacuation Signal (for total evacuation) in accordance with NFPA 72, the appliance must be used with a fire alarm control unit that can generate the temporal pattern signal. Refer to manufacturer’s install ...
FJAFS1720 ESBC Rated NPN Power Transistor ™
FJAFS1720 ESBC Rated NPN Power Transistor ™

... not prone to static dv/dt failures. The power switch is manufactured using a dedicated high-voltage bipolar process and is packaged in a highvoltage TO-3PF package. ...
motor control centers
motor control centers

... Motor control centers shall be of metal-clad, free floor-standing dead-front type, totally enclosed with one or more vertical sections. Arrangement and construction shall be as indicated on Drawings and as specified. Design, construction, and testing shall comply with requirements of latest CEC, UL ...
AP3105NA/NV/NL/NR Description Pin Assignments
AP3105NA/NV/NL/NR Description Pin Assignments

... application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of s ...
motor control centers
motor control centers

< 1 ... 243 244 245 246 247 248 249 250 251 ... 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