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Terms and Abbreviations
Terms and Abbreviations

... Analog signal - A signal that attains an infinite number of different amplitude levels. AO - Analog Output Apparent Power - The power value obtained by multiplying the current by the voltage (P = I X E). 9. Axial dimension - This term is used for the measurement of the coupler distance during the ge ...
Operation and Maintenance Manual
Operation and Maintenance Manual

VTVSxxASMF Series TVS Diodes Safeguard Portable Electronics
VTVSxxASMF Series TVS Diodes Safeguard Portable Electronics

... Portable Electronics with 400 W Surge Capability in Compact SMF Package Product Benefits: ...
CS51021A, CS51022A, CS51023A, CS51024A
CS51021A, CS51022A, CS51023A, CS51024A

... The CS51021A/2A/3A/4A Fixed Frequency PWM Current Mode Controller family provides all necessary features required for AC−DC or DC−DC primary side control. Several features are included eliminating the additional components needed to implement them externally. In addition to low startup current (75 m ...
Craft Port™ Tiny RS-232 Transceiver for Portable Applications  ADM101E
Craft Port™ Tiny RS-232 Transceiver for Portable Applications ADM101E

A Comparison of Generator Excitation Systems
A Comparison of Generator Excitation Systems

... being applied (shown in Figure 8). This method prevents zero-crossings from dictating a single event or notch from impacting the amount of excitation by constantly pulsing and adjusting the duty cycle. The power input waveform is only used for excitation output and is filtered and rectified to a DC ...
Lab 0: Introduction to Lab Equipment and Components Introduction
Lab 0: Introduction to Lab Equipment and Components Introduction

... Potentiometer Used as a variable resistor and voltage divider Capacitor Used to block DC voltage and also to filter out high frequency signals and noises Among the components above, the potentiometer may be new to many of you. The potentiometer is a three-terminal device with two terminals connected ...
An Improved Current Mode Logic Latch
An Improved Current Mode Logic Latch

... and low power”, Chinese Journal of Electronics, Vol.21, No.1, ...
Chapter 6: Analog Electrical Devices
Chapter 6: Analog Electrical Devices

... resistor made of a length of wire wound around an appropriate insulating support. „ The point labeled A represents a sliding contact, which makes an electrical connection with the resistor R at any point along its length. „ The resistance between point A and point B in the circuit is a linear functi ...
IJE-10 - CSC Journals
IJE-10 - CSC Journals

... where i is the winding current, B is the magnetic field density, l1 & l2 are the length and width of the coil and N is the number of turns per winding. Since torque is linearly proportional with both winding current and winding turn length & width, different geometrical dimensions will give differen ...
Programmable AC Current Transducer
Programmable AC Current Transducer

Slide 1
Slide 1

Modeling electric drivetrains (as covered in class)
Modeling electric drivetrains (as covered in class)

... The schematic details the armature circuit model for the pmdc motor, coupled to motor inertia and losses. The back-emf voltage is vm , and ωm is motor shaft speed. A model will be described to study factors that influence deviation from ideal behavior (i.e., instantaneous wheel speed control, no sli ...
foreign voltage guide by country
foreign voltage guide by country

Compact Power meter for cost savings through Energy monitoring
Compact Power meter for cost savings through Energy monitoring

... Power and the power factor for each phase are shown Not only the total power and power factor are shown but also the breakdown related to each phase ...
SC900 Manual
SC900 Manual

... The drive is capable of direct line operation. All units are fully isolated and do not require external isolation transformers. Also, the inrush current on the connection to the line is internally limited to a safe level for the drive. There are no voltage selection or ranging switches required to o ...
8 Bit Digital-to-Analog Converter
8 Bit Digital-to-Analog Converter

Energy in sensor nets - University of Delaware
Energy in sensor nets - University of Delaware

... • Efficient recharging – Some techniques, e.g. solar, can only generate very low current, but over a very long time. – However, batteries require fairly high current to charge… ...
Document
Document

... hard drive.  Remove the drive bay cover first. Then set the CD-ROM jumper to master since it will be connected to the secondary IDE channel.  Slide the drive into the bay from the front, making sure that it is flush with the front panel, and screw it in place.  In some computer cases, particularl ...
G046033742
G046033742

... shaped to be nearly sinusoidal. However, due to the PWM operation of the D-STATCOM, higher-order harmonic components were inevitably experienced. At t ≥ 0.5 s when the RL load switched, the source current that was previously lagged the voltage at the point of coupling connection in case1 was resumed ...
Autotransformers - ELHAND Transformatory
Autotransformers - ELHAND Transformatory

... is similar to the start-up with the star-triangle switch. However, in case of an autotransformer voltage may be freely lowered for the time of the motor start-up, so that the current taken from the network does not exceed the set value. If necessary, the start-up autotransformers are manufactured wi ...
Transducer
Transducer

XTR111 Demonstration Fixture
XTR111 Demonstration Fixture

... obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the speci ...
DEHRADUN INSTITUTE OF TECHNOLOGY Assignment:-3  DEPARTMENT OF ELECTRICAL ENGINEERING
DEHRADUN INSTITUTE OF TECHNOLOGY Assignment:-3 DEPARTMENT OF ELECTRICAL ENGINEERING

... (EA1210: Transformer) ...
Introduction To Current Source Power Units
Introduction To Current Source Power Units

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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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