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Transmits electricity between two alternating current frequency domains
A variable-frequency transformer (VFT) is used to transmit electricity between two (asynchronous or synchronous) alternating current frequency domains
Variable-frequency transformer
Variable-frequency_transformer
Types of electrical transformer
longer path with excess capacity. A variable-frequency transformer is a specialized three-phase power transformer which allows the phase relationship
Transformer_types
Type of adjustable-speed drive
A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable
Variable-frequency_drive
Electronic device
Cascade converter Static inverter plant Variable-frequency transformer Blalock, Thomas J., "The Frequency Changer Era: Interconnecting Systems of Varying
Frequency_changer
Type of electrical transformer
The linear variable differential transformer (LVDT) – also called linear variable displacement transformer, linear variable displacement transducer, or
Linear variable differential transformer
Linear_variable_differential_transformer
Electrical transformer with rotating parts
be designed to accommodate this. Metadyne Rotary converter Variable-frequency transformer Toscani, Nicola; Brunetti, Massimo; Carmeli, Maria Stefania;
Rotary_transformer
Type of electrical transformer
rotary variable differential transformer (RVDT) is a type of electrical transformer used for measuring angular displacement. The transformer has a rotor
Rotary variable differential transformer
Rotary_variable_differential_transformer
Series of electrical grids that power the US and Canada
with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of
North American power transmission grid
North_American_power_transmission_grid
Interconnected network for delivering electricity to consumers
with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of
Electrical_grid
Regional electrical grid
current power transmission lines (DC ties), solid-state transformers or variable-frequency transformers (VFTs), which permit a controlled flow of energy while
Wide_area_synchronous_grid
Electric power transmission system
(transmission line) Submarine power cable Transmission tower Variable-frequency transformer For a more detailed derivation, see Submarine power cable § High
High-voltage_direct_current
Topics referred to by the same term
VFT, an abbreviation, may refer to: Variable frequency transformer, a type of electricity transformer Venus Flytrap, a variety of carnivorous plant Vertical
VFT
Structure enabling energy to flow between networks
of high-voltage direct-current (HVDC) projects Variable-frequency transformer Solid-state transformer "CONNECTING THE GRID: DC TIES SERVE CRITICAL ROLE"
Interconnector
Frequency used on standard electricity grid in a given area
standardization. Several factors influence the choice of frequency in an AC system. Lighting, motors, transformers, generators, and transmission lines all have characteristics
Utility_frequency
Conversion of electrical energy from one form to another
and/or frequency): Transformer Autotransformer Tap changer Ferroresonant transformer Cycloconverter Matrix converter Static frequency converter Variable-frequency
Electric_power_conversion
Algorithm for modelling sequential data
In deep learning, the transformer is a family of artificial neural network architectures based on the multi-head attention mechanism, in which text is
Transformer_(deep_learning)
Device that changes direct current (DC) to alternating current (AC)
Solid-state transformer Space vector modulation Switched-mode power supply (SMPS) Synchronverter Uninterruptible power supply Variable-frequency drive Z-source
Power_inverter
Type of loudspeaker
actual driver structure, hence the name Air Motion Transformer. While suited very well for high frequencies, the AMT can reproduce sound down to 650 Hz. Consequently
Air_Motion_Transformer
Power grid in eastern North America
with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of
Eastern_Interconnection
its main uses are in electrical laboratories and arc welding. Variable frequency transformer Arnold, Archibald (1946). The Modern Electrical Engineer, Volume
Induction_regulator
Power grid in western North America
with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of
Western_Interconnection
Piece of equipment used to weld
transformer designs are often bulky and massive because they operate at the utility mains frequency of 50 or 60 Hz. Such low frequency transformers must
Welding_power_supply
3–30 MHz range of the electromagnetic spectrum
ISSN 0018-9480. Morched, A.; Marti, L.; Ottevangers, J. (1993). "A high frequency transformer model for the EMTP". IEEE Transactions on Power Delivery. 8 (3)
High_frequency
Specialised type of power transformer
substations are connected via two 400 kV lines. Induction regulator Variable-frequency transformer Bibliography Weedy, D. (1988). Electrical Power Systems. Wiley
Quadrature_booster
Estimate of the importance of a word in a document
In information retrieval, tf–idf (term frequency–inverse document frequency, TF*IDF, TFIDF, TF–IDF, or Tf–idf) is a measure of importance of a word to
Tf–idf
Electrical machine
Three-phase electric power Traction current converter plant Variable-frequency transformer Kálmán Kandó Owen, Edward L (1996-01-01). "History". IEEE. 2: 64–66
Rotary_converter
Type of AC electric motor
reactor or auto-transformer starting, star-delta starting or, increasingly, new solid-state soft assemblies and, of course, variable frequency drives (VFDs)
Induction_motor
Electric motor
The efficiency of the DFIG is very good for the same reason. Variable-frequency transformer "Generators for wind turbines Standard slip ring generator series
Doubly_fed_electric_machine
Radio receiver with amplifier stages and a detector
windings of the transformer had a variable capacitor connected across it to make a tuned circuit. A variable capacitor (or sometimes a variable coupling coil
Tuned radio frequency receiver
Tuned_radio_frequency_receiver
Overview of and topical guide to electronics
power supply DC to AC Inverter AC to AC Cycloconverter Transformer Variable frequency transformer Voltage converter Voltage regulator Power applications
Outline_of_electronics
list of characters from The Transformers television series that aired during the debut of the American and Japanese Transformers media franchise from 1984
List of The Transformers characters
List_of_The_Transformers_characters
Form of alternating current
2π⁄3 radians). The generator frequency is typically 50 or 60 Hz, depending on the country. At the power station, transformers change the voltage from generators
Three-phase_electric_power
System designed to maintain a constant voltage
An efficient way of creating a variable-voltage, accurate output power supply is to combine a multi-tapped transformer with an adjustable linear post-regulator
Voltage_regulator
the above). Variable-frequency oscillator (VFO) Phase-locked loop frequency synthesiser Direct digital synthesis While modern frequency synthesizers
Radio_transmitter_design
Device for converting electrical power to another form
an isolated variable transformer. An Alexanderson alternator is a motor-driven, high-frequency alternator which provides radio frequency power. In the
Motor–generator
Physical characteristic of oscillating systems
force or vibration whose frequency matches a resonant frequency (or resonance frequency) of the system, defined as a frequency that generates a maximum
Resonance
List of definitions of terms and concepts used in electrical engineering and electronics
rotary transformer A transformer used to couple electric signals or power between rotating parts. rotary variable differential transformer A transformer-like
Glossary of electrical and electronics engineering
Glossary_of_electrical_and_electronics_engineering
Electrical device that converts AC to DC
called an inverter), then uses a transformer to change the voltage, and finally rectifies power back to DC. A frequency of typically several tens of kilohertz
Rectifier
Mechanical sensors, often based on human senses
Potentiometer: a variable resistance device that expresses linear or angular displacements in terms of voltage. Linear variable differential transformer: a displacement
Robotic_sensors
Frequency to which a carrier wave is shifted during transmission or reception
signal is converted to a lower IF of 480 MHz for filtering, by a variable frequency oscillator. This is sent through a 30 MHz bandpass filter, which selects
Intermediate_frequency
Adjusting input/output impedances of an electrical circuit for some purpose
are equipped with variable "match" and "tune" adjusting screws which enable the user or the system to adjust the center frequency and the level of power
Impedance_matching
Audio equalizer
around a 12AX7/ECC83 vacuum tube, while the output transformer is driven by a 12AU7/ECC82 tube. Transformer distortion and some output loading effects are
Pultec_EQP-1
Magnetic perturbation of imperfectly coupled transformers
load regulation with varying transformer load. But it can also be useful for harmonic isolation (attenuating higher frequencies) of some loads. Leakage inductance
Leakage_inductance
Passive two-terminal electrical component that stores energy in its magnetic field
a transformer, which is a fundamental component of every electric utility power grid. The efficiency of a transformer may decrease as the frequency increases
Inductor
Power grid providing power to most of Texas
with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of
Texas_Interconnection
3–30 kHz range of the electromagnetic spectrum
antennas have very narrow bandwidth and to change the transmitting frequency requires a variable inductor (variometer) to tune the antenna. The large VLF antennas
Very_low_frequency
Machine that converts electrical energy into mechanical energy
soft starters. AC motors operated at variable speeds are powered with various power inverter, variable-frequency drive or electronic commutator technologies
Electric_motor
Pictogram used to represent various electrical and electronic devices or functions
Ferrite bead (IEEE‑style) Variable inductor Trimmer variable inductor Voltage text should be placed on both sides of power transformers, such as 120V (input
Electronic_symbol
amplifier stages that are transformer-coupled rather than capacitor coupled. Both the primary and secondary coils of the transformer are tuned. This has the
Tuned_amplifier
Interpretable computational sub-graphs within artificial neural networks
Framework for Transformer Circuits introduced a linear algebra-based approach to reverse-engineering transformers. Key components of transformer circuits include:
Circuit_(neural_network)
Services to support the transmission of electric power
cancellation. Wind turbines with variable-speed generators have the potential to add synthetic inertia to the grid and assist in frequency control. CAISO tested
Ancillary_services
Test used in electrical engineering
separated by driving the transformer from a variable frequency source since the hysteresis loss varies linearly with supply frequency and the eddy current
Open-circuit_test
Equipment used in induction heating
system can be absent the power unit (power inverter) the work head (transformer) and the heating coil (inductor) Induction heating is a non contact method
Induction_heater
Integral transform and linear operator
integral that takes a function, u(t) of a real variable and produces another function of a real variable H(u)(t). The Hilbert transform is given by the
Hilbert_transform
Assembly to control a series of electric motors from one location
motor control center can also include push buttons, indicator lights, variable-frequency drives, programmable logic controllers, and metering equipment. It
Motor_control_center
Electronic device that converts or regulates electric energy and supplies it to a load
off at a high frequency by electronic switching circuitry, thus producing an AC current that will pass through a high-frequency transformer or inductor
Power_supply
Electrical device that uses batteries to prevent any interruption of power flow
UPS but with the addition of a multi-tap variable-voltage autotransformer. This is a special type of transformer that can add or subtract powered coils
Uninterruptible_power_supply
Electrical circuit with equal-length transmission lines
Richards' transformation and a new frequency variable. Richards' transformation transforms the angular frequency variable, ω, according to, ω → tan ( k
Commensurate_line_circuit
American radio receiver manufacturer (1921–1956)
the RF amplifier stage via an audio-frequency transformer, allowing that tube to also function as an audio-frequency amplifier. This technique, known as
Crosley_Radio_(1921–1956)
Simple radio receiver circuit for AM reception
and secondary were tuned to the frequency of the station. The two circuits interacted to form a resonant transformer. Reducing the coupling between the
Crystal_radio
Electrical conversion hardware
both positive and negative supply rails). Variable bench power supplies exist both as linear (transformer first) and switched-mode power supply (full-bridge
Regulated_power_supply
Electronic circuit
voltage Vb across the transformer primary. The magnetizing current Im of the transformer is Im = Vprimary×t/Lp; here t (time) is a variable that starts at 0
Blocking_oscillator
Electronic circuit
input. Although the Clapp circuit is used as a variable frequency oscillator (VFO) by making C0 a variable capacitor, Vackář states that the Clapp oscillator
Clapp_oscillator
Audio equipment Audio filter Audio frequency Audio noise reduction Audio signal processing Audion tube Austin transformer Automatic gain control Automatic
Index of electrical engineering articles
Index_of_electrical_engineering_articles
Electrical resonant transformer circuit
current power systems, so he understood transformers and resonance. In 1888 he decided that high frequencies were the most promising field for research
History_of_the_Tesla_coil
Instrument to measure radio frequency circuits
instrument that measures the resonant frequency of nearby unconnected radio frequency tuned circuits. It is a variable-frequency oscillator that circulates a small-amplitude
Grid_dip_oscillator
Electrical cable with concentric conductors
isolating transformer or blocking capacitor can be used to couple a coaxial cable to equipment, where it is desirable to pass radio-frequency signals but
Coaxial_cable
Model for magnetic circuits
network analysis. The gyrator is the complement of the transformer; whereas in a transformer, a voltage on one port will transform to a proportional
Gyrator–capacitor_model
Magnetic core on which the windings of electric transformers and inductors are formed
its comparatively low losses at high frequencies, ferrite is extensively used for the cores of RF transformers and inductors in applications such as
Ferrite_core
Systems to distribute electricity
at frequencies independent of the power system frequency. Depending on how the poles are fed, alternating current generators can produce a variable number
Electric_power_system
Property of electrical conductors
the circuit, determine the shape of the frequency response curve. The advantage of the double tuned transformer is that it can have a wider bandwidth than
Inductance
Two-port non-reciprocal network element
fifth linear element after the resistor, capacitor, inductor and ideal transformer. Unlike the four conventional elements, the gyrator is non-reciprocal
Gyrator
Electric motor driven by an AC electrical input
as a variable resistor that allows changing the motor's slip rate. In certain high-power variable-speed wound rotor drives, the slip-frequency energy
AC_motor
Electrical power device
phase and the frequency. [citation needed] Rotary phase converter Variable frequency drive Scott-T transformer "3-Phase Converter Transformer Archived 2019-09-17
Phase_converter
Variable transformers used in control systems
synchro (also known as selsyn and by other brand names) is, in effect, a transformer whose primary-to-secondary coupling may be varied by physically changing
Synchro
Polarity-switching electronic circuit
ratio. However, this method can only be used with high frequency signals. The design of the transformer is also very important, as the leakage inductance should
H-bridge
Type of audible sound
electromagnetic forces. Some examples of this noise include the mains hum, hum of transformers, the whine of some rotating electric machines, or the buzz of fluorescent
Electromagnetically induced acoustic noise
Electromagnetically_induced_acoustic_noise
Type of radio receiver
2011-01-17. Scheer, F.H. (December 1935). "Notes on Intermediate-Frequency Transformer Design". Proceedings of the IRE. 23 (12): 1483–1491. Bibcode:1935PIRE
Superheterodyne_receiver
Type of loudspeaker
dome, inverse dome or horn-type) that is designed to produce high audio frequencies, typically from 2,000 to 20,000 Hz. The name is derived from the high
Tweeter
Discrete device in an electronic system
electrical charge through current: Inductor, coil, choke Variable inductor Saturable inductor Transformer Magnetic amplifier (toroid) ferrite impedances, beads
Electronic_component
Transfer of electrical energy through a usually-insulating boundary
within the core of a power transformer; another circuit may couple to the transformer and receive some leaked energy at the frequency of the electric mains
Leakage_(electronics)
Sinusoidal wave whose frequency is an integer multiple
and also variable-speed drives. Electric motors do not normally contribute significantly to harmonic generation. Both motors and transformers will however
Harmonics_(electrical_power)
Electrical grounding for safety or function
requirements on variable frequency drives and switched-mode power supplies which often have substantial filters passing high frequency noise to the ground
Earthing_system
Electronic device/component that increases the strength of a signal
amplifier is most often used in selective radio-frequency circuits. Transformer coupled amplifier, using a transformer to match impedances or to decouple parts
Amplifier
Set of marks along a ruler such that no two pairs of marks are the same distance apart
information theory and error correction, radio frequency selection and antenna placement, as well as current transformers. A set of integers A = { a 1 , a 2 ,
Golomb_ruler
Device to limit the current in lamps
oil in many ballasts to provide cooling and electrical isolation (see Transformer oil). An electronic ballast uses solid state electronic circuitry to
Electrical_ballast
Acoustic sensing method
for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low (infrasonic) to extremely high
Sonar
Any analogy between electrical and mechanical systems, used for modelling
with a transformer. On the other hand, a transducer converting non-analogous power conjugate variables cannot be represented by a transformer. The two-port
Mechanical–electrical analogies
Mechanical–electrical_analogies
grounded resonant transformer with a wire antenna which transmitted power across the room to another resonant transformer tuned to the frequency of the transmitter
History_of_radio_receivers
Ratio of active power to apparent power
current losses generally increase as the square of the frequency, lowering the transformer's efficiency, dissipating additional heat, and reducing its
Power_factor
AC power converter using transformer tap switching
field-tested under a variety of conditions—nominally as a variable-speed constant-frequency (VSCF) power source for military aircraft—and ornate computer
Tap_converter
Telecommunications device
the small SWR variation with frequency is not a major problem. It should be added that many ferrite based transformers perform a balanced to unbalanced
Antenna_tuner
Study of speech signals and the processing methods of these signals
interactions. The development of Transformer-based models, like Google's BERT (Bidirectional Encoder Representations from Transformers) and OpenAI's GPT (Generative
Speech_processing
Electromagnetic device
of producing radio frequencies above approximately 200 kHz. Other core materials, such as ferrite cores and oil-filled transformers, would have to be developed
Magnetic_amplifier
Miniature adjustable component
seen or adjusted by the device's user. Trimmers can be variable resistors (potentiometers), variable capacitors, or trimmable inductors. They are common
Trimmer_(electronics)
rangefinder Laser surface velocimeter LIDAR Linear encoder Linear variable differential transformer (LVDT) Liquid capacitive inclinometers Odometer Photoelectric
List_of_sensors
Standard current and voltage settings for most high-speed rail
(via transformer) to 3 kV DC (via phase-controlled rectifier with thyristor) to a maximum 2,300 V three-phase AC (via a variable voltage, variable frequency
25 kV AC railway electrification
25_kV_AC_railway_electrification
Impedance matching circuit element
electronics. In high frequency horns, the L Pad is seen by the crossover, not the amp. L pads may not necessarily use continuously variable rheostats, but instead
L_pad
Concept in electromechanical engineering
analogous to transformer turns ratio in the impedance analogy. A mechanical advantage greater than unity is analogous to a step-up transformer and less than
Impedance_analogy
High-frequency AC generator for radio transmission
induce a radio-frequency voltage in a second set of coils on the stator. The RF collector coils are all interconnected by an output transformer, whose secondary
Alexanderson_alternator
VARIABLE FREQUENCY-TRANSFORMER
VARIABLE FREQUENCY-TRANSFORMER
Boy/Male
Anglo, British, English
Variable
Girl/Female
Tamil
Valuable
Boy/Male
Greek
Amiable.
Boy/Male
Hawaiian
Valuable.
Girl/Female
Gujarati, Hindu, Indian
Valuable
Boy/Male
Arabic, Indian, Muslim
Valuable
Male
Danish
, amiable.
Boy/Male
Arabic, Bengali, Hindu, Indian, Kannada, Marathi, Muslim, Telugu
Valuable
Surname or Lastname
English
English : from the feminine personal name Mirabel, equated in medieval records with Latin mirabilis ‘marvellous’, ‘wonderful’ (in the sense ‘extraordinary’).
Boy/Male
Hindu, Indian
Valuable
Surname or Lastname
English (also frequent in Wales)
English (also frequent in Wales) : patronymic from the personal name Watkin.
Male
Danish
, amiable.
Girl/Female
Indian
Valuable
Girl/Female
Armenian
Valuable.
Girl/Female
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Valuable
Boy/Male
Hindu
Amiable
Boy/Male
Vietnamese
Valuable.
Boy/Male
Hindi
Valuable.
Girl/Female
Christian & English(British/American/Australian)
Amiable
Boy/Male
Tamil
Amiable
VARIABLE FREQUENCY-TRANSFORMER
VARIABLE FREQUENCY-TRANSFORMER
Boy/Male
Indian, Telugu
Peaceful
Girl/Female
Tamil
Triambika | தà¯à®°à®¿à®‚பிகா
Goddess Parvati
Girl/Female
Latin American
Wandering. From the Greek Odysseus.
Girl/Female
British, English, Finnish, French, Latin
Valley; Usually with a Stream; Strong
Girl/Female
Australian, French, Greek
People's Victory; Female Version of Nicholas
Boy/Male
Hindu, Indian
One who Controls or Organize Something
Boy/Male
Arabic, Muslim, Pashtun
Laborious
Boy/Male
Hindu, Indian, Tamil
Youthful; Another Name for God Murugan
Girl/Female
Australian, Japanese
Of Faith
Girl/Female
Tamil
Ragavarshini | ரகவாரà¯à®·à¯€à®¨à¯€
One who showers ragas
VARIABLE FREQUENCY-TRANSFORMER
VARIABLE FREQUENCY-TRANSFORMER
VARIABLE FREQUENCY-TRANSFORMER
VARIABLE FREQUENCY-TRANSFORMER
VARIABLE FREQUENCY-TRANSFORMER
a.
Arable; tillable.
n.
Arable land; plow land.
n.
Frequency; abundance.
a.
Liable to undergo a judicial examination; properly coming under the cognizance of a court; as, a cause may be triable before one court which is not triable in another.
n.
Infrequency.
a.
Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.
adv.
In a variable manner.
n.
Frequency.
a.
Worthy; estimable; deserving esteem; as, a valuable friend; a valuable companion.
v. t.
To represent by parable.
a.
Invariable.
a.
Friendly; kindly; sweet; gracious; as, an amiable temper or mood; amiable ideas.
n.
Often to be met with; happening at short intervals; often repeated or occurring; as, frequent visits.
a.
Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.
adv.
At frequent or short intervals; many times; often; repeatedly; commonly.
n.
An invariable quantity; a constant.
n.
A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x2 - y2 = R2, x and y are variables.
n.
The condition of returning frequently; occurrence often repeated; common occurence; as, the frequency of crimes; the frequency of miracles.
a.
Having value or worth; possessing qualities which are useful and esteemed; precious; costly; as, a valuable horse; valuable land; a valuable cargo.
n.
That which is variable; that which varies, or is subject to change.