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   Transformers, Isolation

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.
AC Transformer
Acme Electric Corporation
Actown Transformers
Advanced Components Industries, Inc.
Advanced Magnetic Components
Agere Systems
AlfaMag Electronics LLC
All Shore Industries Inc.
Allen Avionics, Inc.
Allied Components International
Alpha-Core, Inc.
Altran Corp.
Amecon, Inc.
American Magnetics
American Power Conversion
Amveco Magnetics Inc
Andover, Incorporated
APX Technologies Inc.
ATC-Frost Magnetics / Standex Electronics
Avel Lindberg Inc.
AYA Instruments, Inc.
B & K Precision Corp.
Badger Transformer Comp. Inc.
Basler Electric
BC Systems, Inc.
Bel Fuse Inc.
Berkshire Transformer
Beta Transformer Technology Corp.
Bey Electronics Corp.
BH Electronics, Inc.
Bicron Electronics
Bomag USA, LLC
Bourns, Inc.
Bridgeport Magnetics/Tortran Inc.
C & C Jetronic
Cabur Srl
Central Technologies
CET Technology
Charles Industries, Ltd
Clare Inc.
Cletronics Inc.
Coast Magnetics
CoEv, Inc.
Coil Specialty Company
Coilcraft
Communication Coil Inc.
Controlled Power Company
Cooper Electronic Technologies/Cooper Bussmann
Corona Magnetics, Inc.
Cramer Coil & Transformer Co., Inc.
CSE Manufactory Co., Ltd.
CTM Magnetics
Custom Bobbin Windings
Custom Coils Inc.
Custom Magnetics Inc.
CyberResearch, Inc.
Datatronic Distribution, Inc.
DCA, Inc.
Deltona Transformer Corp.
DeYoung Mfg., Inc.
Drivecon Corp.
Dynage/Power & Magnetics
Dynapower Corporation
E. D. & D.
EAG Electronics
Eastland Electronics
Eichhoff Electronics, Inc.
EK Magnetics
Electro Assemblies Corp.
Electro Technik Industries
Electro-Metrics
Electro-Numerics Inc.
Electromech, Inc.
Electronetics
Electronic Specialists Inc.
Elytone Electronics Co., Ltd.
Endicott Coil Company, Inc.
ENI
Ensign Corp.
EPCO Products Inc.
ERA Elektrotechnik GmbH
Excel Electric Corporation
FCI Semiconductor
Flex-Core Division
Flux A/S
Forest Electric Company
Foster Transformer Company
Freed Transformer Company, Inc.
FRIWO-EMC, Inc.
Gavagan Electronics
GCi Technologies
General Linear Systems, Inc.
Gettysburg Transformer Corp.
Glen Magnetics Inc.
GlobTek, Inc
Gowanda Electronics Corp.
Grand Transformer, Inc.
HALO Electronics, Inc.
Hammond Manufacturing Company
Hammond Power Solutions Inc.
Hammond Power Solutions Inc.
Hipotronics Inc.
Hisonic, Inc.
Hitran Corp.
I-TECH CORP.
Ice Components, Inc
IET Labs, Inc.
Inductive Technologies
Integrity Technology Corporation
Interpower Corporation
ISL Products International Limited
James Electronics
Jefferson Electric, Inc.
Jensen Transformers, Inc.
Jerome Industries Corp.
JM Transformer Company, Inc.
Kappa Technologies, Inc.
Kaschke U.S.A. Inc.
Keytronics, Inc.
KGS Electronics, Inc.
Kuhlman Electric Corporation
L/C Magnetics
Lenco Electronics, Inc.
Lepco/Leonard Electric Products
Mag-Con Engineering, Inc.
Magnelab
Magnetic Circuit Elements
Magnetic Design Labs
Magnetic Windings Co., Inc.
Magnetico, Inc.
Magnetics & Controls, Inc.
Magnetika, Inc
Magnetran Inc.
Mainstar Industries Limited
Manby Park Westropp Ltd
Marvel Electric Corp.
MCI Transformer Corp.
Micron Industries Corporation
Microtran Manufacturing Division
Midcom, Inc.
Mingstar Electronic Corp.
Mini-Circuits
Minntronix, Inc
Mitchell Electronics Corp.
MTE Corp.
Multicomp/ZMAN Magnetics
Myers Power Products, Inc.
Neeltran, Inc.
Nicollet Technologies Corp.
North Atlantic Industries
North Hills Signal Processing
Northlake Engineering, Inc.
On-Line Power Inc
Pacific Transformer Corp
Para-Line Transformer Company, Inc.
Payton America
PC Transformer Corp.
PCA Electronics Inc.
Peter Parts Electronics
Peter W Dahl Co Inc
Phenix Technologies, Inc.
Pico Electronics, Inc.
Plastic Capacitors, Inc.
PLITRON Manufacturing, Inc.
Polara Engineering Inc.
Power Magnetics
Power Paragon
PowerPax UK Limited
Powertronix Corp.
Powervar
PowerVolt, Inc.
Precision Components, Inc.
Precision Electronics
Precision Inc
Prem Magnetics, Inc.
Premier Devices, Inc.
Products Unlimited
Proxim Wireless Networks
Pulse Specialty Components
Pulse, A Technitrol Company
Quail Electronics, Inc.
Quality Transformer Corp.
Raycom Electronics, Inc.
RCD Components, Inc.
Renco Electronics, Inc.
RFE International, Inc.
RFI Corp.
Rhombus Industries
Ross Engineering Corp.
SAE Power, Inc.
Schott Magnetics
Schumacher Electric Corp.
Scientific Conversion, Inc.
Sencore, Inc.
Shogyo Int'l Corp.
Sigma Electronics Inc
Signal Transformer
Sola Hevi-Duty
Solar Electronics Company
South American Development Corp.
Sprague-Goodman Electronics, Inc.
Stancor
Standard Magnetic Corp.
Standex Electronics Inc.
Sum R Transformers
Sutton Designs, Inc.
Tabtronics Incorporated
Taehwatrans Co., Ltd.
Tamura Corp of America
Tamura Corp. of America
The Winatic Corp.
Thomas Magnetix
Thordarson Inc.
Thordarson Meissner Incorporated
Todd Systems, Inc.
Toko America, Inc.
Toroid Corporation of Maryland
Toroid Technologies, Inc.
Torotel Products Inc.
Tranex Inc
Trans-Coil, Inc
TransERA Electronics Inc.
Transformer Engineering Corp.
Transpower Technologies, Inc
Transtek Magnetics
Triad Magnetics (formerly Magnetek)
TT electronics BI Technologies
TTE, Incorporated
V & F Transformer Corp.
Ventronics, Inc.
Vishay Intertechnology
Vitec Electronics Corp.
West Coast Magnetics
Wilco Corporation
YCL Electronics Corp. Ltd
Zambre Company, Inc.
Zixel, Ltd.
ZMAN Magnetics
Fix & Prog. Sinewave Oscillators - Frequency Devices

 

Books
Electric Machinery and Transformers (The Oxford Series in Electrical and Computer Engineering)
Bhag S. Guru and Huseyin R. Hiziroglu

Excerpt - page 203: "... the applied voltage to the primary. In this case, the transformer is called a step-up transformer. ... transformer is usually called an isolation transformer . An isolation transformer can be utilized for direct ..."
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Transformers and Motors
George Shultz

Excerpt - page 10: "... tuned by changing the inductance of the coil. Purpose General-purpose transformers are usually dry-type transformers 600 ... step-up or stepdown a voltage. Isolation transformers are used to isolate the ground system of the ..."
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Handbook of Transformer Design and Applications
William M. Flanagan

Excerpt - page 27: "... loss, and the core loss determine the efficiency of the transformer. RL n2 FIG. 2.2 Equivalent ... the case in a high-voltage isolation transformer. The load impedance may be reactive. In those cases ..."
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Magnetic Core Selection for Transformers and Inductors (Electrical and Computer Engineering)
Colonel Wm. T. McLyman

Excerpt - page 4: "... for the sake of simplicity, that the core of an isolation transformer has but two windings in the window area (Wa): a ..."
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Practical Transformer Handbook: for Electronics, Radio and Communications Engineers
Irving Gottlieb

Excerpt - page 35: "... Specialized transformer devices 35 This isolation also manifests itself in load voltage regulation. Much of the ..."
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Isolation transformers for utility interactive photovoltaic systems
Edward C Kern

Power Transformers (Power Engineering)
John Winders

Excerpt - page 16: "... also cause equipment to overheat and produce voltage distortion. The isolation of third harmonics is an important design consideration in transformers. Techniques to accomplish this are covered in later chapters. 1.10 ..."
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Electronic Transformers and Circuits, 3E
Reuben Lee, Leo Wilson, and Charles E. Carter

Excerpt - page 2: "... compared to the electric generators in a power utility system. Transformers are needed in electronic apparatus to provide the various levels of voltage required for proper system operation, to provide electrical isolation between parts of the system which operate at different potentials, ..."
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Electrical Transformer Handbook (Practical Handbooks For Electrical Professionals, Volume 1)
R. W. Hurst, Paul Pillitteri, Dhiru Patel, and Steve Kovacevic

Transformer Engineering (Power Engineering, 25)
S.V. Kulkarni and S.A. Khaparde

J & P Transformer Book, Twelfth Edition
Martin Heathcote

Power Electronics Converter Harmonics: Multipulse Methods for Clean Power
Derek A. Paice

Excerpt - page 70: "... be helpful in some cases. This occurs when the double-wound transformer isolation features are required for circuit topology, but the cost and ..."
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Power Electronics Design Handbook: Low-Power Components and Applications (EDN Series for Design Engineers)
Nihal Kularatna

Excerpt - page 262: "... Mode Simple Voltage Mode Peak Current (150 W) 2A 9A Transformer Isolation Not Possible Easy Rectifier Needs Fast Moderate Vmax on power ..."
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Fundamentals of Linear Electronics
James Cox

Excerpt - page 39: "... DC side of the circuit without shorting any circuit components. Isolation Transformer FIGURE 2-8 Bridge circuit with isolation transformer If a bridge ..."
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Understanding Audio: Getting the Most Out of Your Project or Professional Recording Studio
Daniel M. Thompson

Excerpt - page 169: "... Ground loops between racks can be prevented by using input isolation transformers between all racks and console inputs. This type of input ..."
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High Reliability Magnetic Devices (Electrical Engineering & Electronics, 115)
Colonel Wm. T. McLyman

Excerpt - page 2: "... (P0), is of greatest interest to the user. To the transformer designer it is the apparent ... simplicity, the core of an isolation transformer has only two windings in the window area, (Wa), ..."
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The Art of Electronics
Paul Horowitz and Winfield Hill

Excerpt - page 462: "... circuits powered directly from the ac power lines. Currently available isolation amplifiers use one of three methods: 1. Transformer isolation of a high- frequency carrier signal, which is either ..."
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Understanding, Building, and Using Baluns and Ununs
Jerry Sevick

Excerpt - page 4: "... Thus, Guanella's basic building block can be considered a 1:1 isolation transformer! In reviewing the Balun operation, the voltage drop is 1/2 ..."
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Sound Reinforcement Handbook
Gary D. Davis and Ralph Jones

Excerpt - page 184: "... Output Cable subject to very Input r---------1high noise environ- ~---------1 TRANSFORMER (Ref. Fig. 11-13) 1 ment ... main console also JE-MB-C needs isolation ISOLATION transformer, use TRANSFORMER self-contained phantom supply at mic. MAIN ..."
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Mechanical and Electrical Equipment for Buildings, 10th Edition
Benjamin Stein, John S. Reynolds, Walter T. Grondzik, and Alison G. Kwok

Excerpt - page 1214: "... noise fil- tering and surge suppression by use of an isolation transformer, ground noise filters, and categoryA and e surge suppression (see ..."
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Modern Hydronic Heating for Residential and Light Commercial Buildings, 2E
Siegenthaler

Excerpt - page 286: "... 24-VAC power for the thermostat circuits is generated by the transformer in the relay center. When ... powered by an external transformer. Isolation relay is powered up when any one or more of ..."
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Medical Instrumentation: Application and Design
John G. Webster

Excerpt - page 647: "... the source and reference of the common-mode signal across the isolation barrier to the output common. ... the design of isolation amplifiers: transformer isolation, optical isolation, and capacitive isolation. The transformer approach illustrated ..."
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Power Electronics: Converters, Applications, and Design
Ned Mohan, Tore M. Undeland, and William P. Robbins

Excerpt - page 155: "... 6-9 is supplying a do load of 1 kW. A 1.5-kVA-isolation transformer with a source-side voltage rating of 120 V at 60 ..."
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Tab Electronics Guide to Understanding Electricity and Electronics
G. Randy Slone

Excerpt - page 294: "... Fig. 9-7, TI and T2 are any two "identical" power transformers, with appropriate ratings for the ... two such transformers for the isolation circuit, the primary of TI would be connected to the ..."
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Project Arcade: Build Your Own Arcade Machine
John St. Clair

Excerpt - page 279: "... on in the chapter. Used by permission of Happ Controls. Isolation transformers An isolation transformer is a component that sits between the ..."
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The 12-Volt Bible for Boats
Miner K. Brotherton and Edwin R. Sherman

Excerpt - page 134: "... the shore-power inlet receptacle. A second method of achieving galvanic isolation on board incorporates a 1:1 transformer (an isolation transformer) into the AC circuitry. The trouble with ..."
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Sailboat Electrics Simplified
Don Casey

Excerpt - Index: "... drop in, 46 transfer switch, 157 troubleshooting, 130-32 wet, 81 transformer, isolation, 149 windlass, current demands of, 10, See also battery cables, ..."
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Fundamentals of Power Electronics (Second Edition)
Robert W. Erickson and Dragan Maksimovic

Excerpt - page 7: "... to drive lamps that light the display. A charger with transformer isolation converts the ac line voltage into dc to charge the ..."
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GROL Plus: General Radiotelephone Operator License Plus Radar Endorsement
Gordon West, Fred Maia, and Gerald Luecke

Excerpt - page 393: "... RADAR TECHNIQUES 8 ANSWER C: The 1-kilovolt input to the transformer and the isolation of the rectifier should tell you this is a high-voltage ..."
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Serial Port Complete
Jan Axelson and Jan Axelson

Excerpt - Index: "... 243 topology, network 223-225 tpin (Basic Stamp) 106 transceiver 197 transformer, for isolation 148, 151 transmission line 206 TransmitCommChar 85 transmitter See driver ..."
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Audel Electrician's Pocket Manual
Paul Rosenberg

Excerpt - page 164: "... 164 Electrical Power Distribution Isolation Transformers Isolation transformers (as shown in Fig. 7-22) electrically isolate computer equipment ..."
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How Things Work: The Physics of Everyday Life
Louis A. Bloomfield

Excerpt - page 364: "... up the bulb. This simple device is known as an isolation transformer. When you plug its primary coil into an AC outlet, ..."
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Clinical Anesthesiology
G. Edward Morgan, Maged S. Mikhail, and Michael J. Murray

Excerpt - Index: "... venous air embolism monitoring and, 575 in mitral regurgitation, 412 Transformer, isolation, protection from electrical shock and, 15, 22, 22f, 23f, 24f ..."
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Biomedical Instrumentation: Technology and Applications
R. S. Khandpur

Excerpt - page 123: "... also suitable for use with a thermocouple. 4.3.5 Isolation Amplifiers Isolation amplifiers are commonly used for ... design of isolation amplifiers: (i) transformer isolation, (ii) optical isolation, (iii) capacitive isolation. The transformer approach ..."
See more references to Transformers, Isolation in this book.
Op Amp Applications Handbook (Analog Devices Series)
Walt Jung

Excerpt - page 162: "... the only issues to be considered in the choice of isolation systems. Operating power is of ... must be provided. Systems using transformer isolation can easily use a transformer (either the signal transformer ..."
See more references to Transformers, Isolation in this book.
Principles of Avionics, Third Edition
Albert Helfrick

Excerpt - page 285: "... from electromagnetic fields is a function of system balance. The transformer connects directly to the bus through a stub. Even with the transformer, isolation resistors and stubs aid in isolating user equipment from the ..."
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