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Fix & Prog. Sinewave Oscillators - Frequency Devices

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   Transformers, High Frequency

A transformer is an electrical device that transfers energy from one circuit to another by magnetic coupling with no moving parts. A transformer comprises two or more coupled windings, or a single tapped winding and, in most cases, a magnetic core to concentrate magnetic flux. An alternating current in one winding creates a time-varying magnetic flux in the core, which induces a voltage in the other windings. Transformers are used to convert between high and low voltages, to change impedance, and to provide electrical isolation between circuits.



Bronze Partners
3S Industries, Co., Inc.
AAC Inc
Abbott Technologies, Inc.
AlfaMag Electronics LLC
Allied Components International
Altran Corp.
American Magnetics
American Toppower
Anoma North America Corporation
API Delevan Inc.
APX Technologies Inc.
ATC-Frost Magnetics / Standex Electronics
Beta Transformer Technology Corp.
Bey Electronics Corp.
BH Electronics, Inc.
Bicron Electronics
Bomag USA, LLC
Bridgeport Magnetics/Tortran Inc.
C & C Jetronic
Central Technologies
Coil Specialty Company
Coin Electronics.Co.,Ltd
Communication Coil Inc.
Cramer Coil & Transformer Co., Inc.
CTM Magnetics
Custom Magnetics Inc.
Datatronic Distribution, Inc.
DCA, Inc.
DeYoung Mfg., Inc.
DT Magnetics
Dynage/Power & Magnetics
EAG Electronics
EK Magnetics
Electrocube, Inc.
Electromech, Inc.
EPCO Products Inc.
Freed Transformer Company, Inc.
Frontier Electronics
GCi Technologies
Glen Magnetics Inc.
GMW Associates
HALO Electronics, Inc.
Hatch Transformers Inc
Hisonic, Inc.
Honeywell Inc., Amorphous Metals
I-TECH CORP.
Inductive Technologies
Industrial Test Equipment Company
Integrity Technology Corporation
Kappa Technologies, Inc.
Keytronics, Inc.
Lenco Electronics, Inc.
M/A-COM Tyco Electronics
Mag-Con Engineering, Inc.
Magnelab
Magnetic Circuit Elements
Magnetico, Inc.
Magnetika, Inc
Mainstar Industries Limited
MCI Transformer Corp.
Mingstar Electronic Corp.
Mini-Circuits
Minntronix, Inc
Neeltran, Inc.
North Hills Signal Processing
Pearson Electronics, Inc.
Pico Electronics, Inc.
Power Magnetics
Power Paragon
PowerPax UK Limited
Powertronix Corp.
PowerVolt, Inc.
Precision Electronics
Precision Inc
Prem Magnetics, Inc.
Pulse, A Technitrol Company
Quality Transformer Corp.
RCD Components, Inc.
Renco Electronics, Inc.
RFI Corp.
Scientific Conversion, Inc.
Shogyo Int'l Corp.
Sigma Electronics Inc
Signal Transformer
Sprague-Goodman Electronics, Inc.
Standex Electronics Inc.
Tabtronics Incorporated
Thordarson Inc.
Thordarson Meissner Incorporated
Tranex Inc
Transtek Magnetics
Triad Magnetics (formerly Magnetek)
TT electronics BI Technologies
Vitec Electronics Corp.
VOGT Electronic of NA, Inc.
West Coast Magnetics
Wirebenders, Inc.
World Power Components
XFMRS Inc
Zixel, Ltd.
ZMAN Magnetics
Fixed and programmable amplifiers - Frequency Devices

 

Books
High Reliability Magnetic Devices (Electrical Engineering & Electronics, 115)
Colonel Wm. T. McLyman

Excerpt - page 34: "... and very low core loss making it suitable for designing high frequency aerospace transformers and mag-amps. The Vitroperm 500F is an iron based material ..."
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Practical Transformer Handbook: for Electronics, Radio and Communications Engineers
Irving Gottlieb

Excerpt - page 22: "... the conductors . Proximity effect also asserts itself in the high frequency transformers used in regulated power suppies, inverters and converters. There can ..."
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Evaluation of a multi-Kw, high frequency transformer for space applications (SuDoc NAS 1.15:106657)
Mary Ellen Roth

Design methods for high frequency transformers
Allen M Hadley

Winding Design for High-frequency Transformers
G. Dubois

Transformer and Inductor Design Handbook, Third Edition (Electrical and Computer Engineering)
Colonel Wm. T. McLyman

Excerpt - page 50: "... transformer is the largest component in the design. When designing high frequency transformers, the design equations relate to a very small transformer. When ..."
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Inductors and Transformers For Power Electronics
Alex Van den Bossche and Vencislav Cekov Valchev

Excerpt - page 86: "... where the winding area is not filled.  low frequency approximation designs (d < 1.6 ... good approach to reduce the transformer losses is to use interleaved ... the inside winding.  high frequency transformers, single layer winding designs do perform better than ..."
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An Introduction to Radio Frequency Engineering
Christopher Coleman

Excerpt - page 45: "... A toroidal inductor can be turned into a very effective high frequency transformer by adding an additional winding, as shown in Figure 2.25 ..."
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Magnetic Core Selection for Transformers and Inductors (Electrical and Computer Engineering)
Colonel Wm. T. McLyman

Excerpt - page 106: "... the C-core section in column 15. As this is a high-frequency transformer, the window area W, should be at least a factor ..."
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Electronic Transformers and Circuits, 3E
Reuben Lee, Leo Wilson, and Charles E. Carter

Excerpt - page 7: "... time over which the flux change takes place. At low frequencies, the flux changes over a ... so it is that low-frequency transformers are characterized by the use of a large number of turns, whereas high-frequency transformers have but few turns. If the flux 0 did ..."
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Rfid Handbook: Radio-Frequency Identification Fundamentals and Applications
Klaus Finkenzeller and Rachel Waddington

Excerpt - page 43: "... transponder coil and reader coil corresponds with that of a transformer. The reader represents the primary winding and the transponder coil represents the secondary winding of a transformer. A high frequency alternating current in the primary winding generates a high frequency ..."
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Wound component test takes a new turn: Can your transformer tester meet today's high-frequency requirements? (Component Test).: An article from: EE-Evaluation Engineering
Tom Lecklider

High Frequency and Microwave Engineering
Ed da Silva

Excerpt - page 81: "... argue that an open circuit does not exist at radio frequencies because any unterminated TX line has stray capacitance associated with an open circuit. We will ignore this stray capacitance temporarily because, for our frequencies of operation, its reactance is extremely high. ..."
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Final report for high power, high voltage, audio frequency transformer design manual,: Covering the period July 1, 1962 through August 31, 1964
J. G Howe

Noise in High-Frequency Circuits and Oscillators
Burkhard Schiek, Heinz-J&#252;rgen Siweris, and Ilona Rolfes

Electromagnetics Explained: A Handbook for Wireless/ RF, EMC, and High-Speed Electronics, Part of the EDN Series for Design Engineers (EDN Series for Design Engineers)
Ron Schmitt

Excerpt - page 149: "... inductors are not the only components that change behavior at high frequency. All components have parasitic behavior. Transformers are basically coupled inductors, and are the most complicated of ..."
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Handbook of Transformer Design and Applications
William M. Flanagan

Excerpt - page 49: "... in Eq. (4.8) to obtain the total insertion loss. 4.3 HIGH-FREQUENCY RESPONSE The high-frequency response of wideband transformers is usually analyzed by means of the simplified circuits of ..."
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Analog Circuit Design: Scalable Analog Circuit Design, High-Speed D/A Converters, RF Power Amplifiers
Johan H. Huijsing, Michiel Steyaert, and Arthur H.M. van Roermund

Excerpt - page 166: "... INL and DNL characteristics for the 12-bit DAC prototype 5.4 Frequency Domain Performance The frequency domain ... of the DAC to a high frequency spectrum analyser by means of a wide-band transformer. 0 1000 2000 3000 4000 DAC Input coda ..."
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Power Electronics and Variable Frequency Drives: Technology and Applications
Bimal K. Bose

Excerpt - page 81: "... pulse width modulated (PWM) choppers [6-9] in various configurations or high-frequency-link DC-to-DC converters in more specialized mobile applications [10, 11] where; transformer isolation is required and high power density is a necessity. ..."
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Electromagnetic Transients in Power Systems (High-Voltage Power Transmission, 1) (High-Voltage Power Transmission Series)
Pritindra Chowdhuri

Excerpt - page 265: "... However, if the applied voltage is oscillatory and contains a frequency which coincides with one of ... has caused field failures of transformers [13,5-10]. Switching surges are generally ... the fundamental natural frequencies of high-voltage transformers seem to coincide with the oscillations of some of ..."
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High Voltage Engineering Fundamentals
E. Kuffel, W S Zaengl, and J. Kuffel

Excerpt - page 23: "... remains nearly constant and has a phase shift between input (high-frequency power supply) and output (termination). The transformers, therefore, are not used to increase the a.c. voltage. It ..."
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Electrician's Technical Reference: Variable Frequency Drives
Robert Carrow

Excerpt - page 26: "... autotransformer is often less expensive than a full-isolation or voltage-matching transformer. This is the case when ... and destroying components. Also, some high-frequency AC is blocked in an inductor, thus utilizing the isolation ..."
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Radio Frequency Circuit Design
W. Alan Davis and Krishna Agarwal

Excerpt - page 106: "... The leakage inductance together with the interwire capacitances limits the high- frequency response. The transmission line transformer avoids these frequency limitations. 6.2 IDEAL TRANSMISSION LINE TRANSFORMERS It ..."
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Transformer Engineering (Power Engineering, 25)
S.V. Kulkarni and S.A. Khaparde

Excerpt - page 4: "... effective and fast drying (moisture removal) and cleaning - Low frequency heating for the drying process of distribution transformers - Pressurized chambers for windings ... accurate sizing of windings - High frequency brazing for joints in the windings and connections Accessories: ..."
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Switching Phenomena in High-voltage Circuit Breakers (Electrical and Computer Engineering)
Nakanishi

Excerpt - page 28: "... Configurations 1-3 are for a power station circuit breaker. A high natural frequency TRV appears for them. Number 4 is the case of it transformer bank circuit breaker, and again a high natural frequency TRV ..."
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High-Frequency Analog Integrated Circuit Design (Wiley Series in Microwave and Optical Engineering)
Ravender Goyal

High Frequency Techniques: An Introduction to RF and Microwave Engineering
Joseph F. White

Practical Spectroscopy of High-Frequency Discharges (Physics of Atoms and Molecules)
S.A. Kazantsev, Vyacheslav I. Khutorshchikov, Günter H. Guthöhrlein, and Laurentius Windholz

Transmission Lines and Communication Networks: An Introduction to Transmission Lines, High-frequency and High-speed Pulse Characteristics and Applications
Richard E. Matick

Very High Frequency (VHF) ESR/EPR (Biological Magnetic Resonance)
Oleg Grinberg and Lawrence J. Berliner

High-Frequency Plasma Heating (Translation Series)
A. G. Litvak

High Linearity RF Amplifier Design
Peter B. Kenington

Excerpt - page 150: "... 150 High Linearity RF Amplifier Design frequency shaping. The 8852 impedances are then transformed by the input and output transformers to the required 5052 impedance of the cable. The achieved ..."
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High Frequency and Microwave Circuit Design
Charles Nelson

High-frequency Bipolar Transistors
Michael Reisch

High Frequency Continuous Time Filters in Digital CMOS
Shanthi Pavan and Yannis Tsividis

Practical Radio Frequency Test and Measurement: A Technician's Handbook
Joseph Carr

Excerpt - page 26: "... given application, then this form of splitter/combiner is ideally suited. Transformer Combiner/Splitter Figure 2.9 shows a ... discussion will concentrate on the high frequency shortwave bands, as those are the easiest forms of combiner/splitter ..."
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