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A
transformer is a device that transfers electrical energy from one
circuit to another through inductively coupled conductors — the
transformer's coils or "windings". Except for air-core transformers,
the conductors are commonly wound around a single iron-rich core,
or around separate but magnetically-coupled cores. A varying current
in the first or "primary" winding creates a varying magnetic field
in the core (or cores) of the transformer. This varying magnetic
field induces a varying electromotive force (EMF) or "voltage" in
the "secondary" winding. This effect is called mutual induction.
-Wikipedia
Transformers Manufacturers &
Service
Transformer Design Books
The Audio Note™ Transformer Design Philosophy
| enjoythemusic.com/magazine/manufacture/0105
From Enjoy the
Music.com, by By Andy Grove And Peter Qvortrup.
Audio Transformers | jensentransformers.com/an/Audio
Transformers Chapter.pdf
By Bill Whitlock, from Jensen Transformers,
Inc.
Audio Transformers | shure.com/support/technotes/app-transform.html
From Shure Incorporated.
Audio Transformers Magnetic Shielding | sescom.com/audio/transfor_mag_shield.html
From SESCOM, Inc.
Construction And Use of Broadband Transformers
| oselectronics.com/downloads/Broadband Transformers.pdf
From
Ocean State Electronics.
Current-Sense Transformer Application Design Guidelines
| datatronics.com/pdf/current_sense_article.pdf
By Ariel General,
Datatronic Distribution Inc.
Current Transformer Design and Theory | coilwinder.com/current_transformer_design_and_theory.htm
From Coil Winders.
Current Transformers: How to Specify Them |
mt.schneider-electric.be/Main/CT/ct194UK.pdf
From Schneider Electric.
Current Transformers: Specification Errors and Solutions
| mt.schneider-electric.be/Main/CT/ct195UK.pdf
From Schneider
Electric.
Design Parameters for Low-Distortion and Power Transformers
TT/PR Cores | epcos.com/inf/80/ds/e0000005.pdf
Siemens
Matsushita Components.
Dimming Dual Lamp Parallel Configuration with Balance
Transformer | irf.com/technical-info/appnotes/an-1039.pdf
Application note from International Rectifier Corp, by T. Ribarich,
R. Marenche.
Electrical Power Transformer & Inductor Design
| smps.us/magnetics.html
A guide to power transformers and inductors.
Theory, free design software, calculators, tutorials, guides, online
handbook and other resources.
Electronic Transformer Applications | irf.com/technical-info/appnotes/an-1069.pdf
Application note from International Rectifier Corp, by Peter Green.
Everything You Wanted to Know About Wideband, Low-Frequency
Transformers | edn.com/article/CA54575.html?1=1
From
EDN, by Richard Kurzrok.
Field Adjustment of Current Transformer Ratio
| crmagnetics.com/pdf/ancrct-1.pdf
Application sheet from CR
Magnetics, Inc.
Finding and Fixing Hum | psaudio.com/ps/how-to/finding-and-fixing-hum
From PS Audio.
Flyback Transformer Design for MAX1856 SLIC Power Supplies
| maxim-ic.com/appnotes.cfm/appnote_number/1166
Application note
from Maxim Integrated Products.
Flyback Transformer Design for the IRIS40xx Series
| irf.com/technical-info/appnotes/an-1024.pdf
Application note
from International Rectifier Corp.
How RF Transformers Work | minicircuits.com/pages/pdfs/howxfmerwork.pdf
Application note from Mini-Circuits.
How to Calculate Transformer Related Noise Figure
| jensen-transformers.com/as/as040.pdf
From Jensen Transformers,
Inc.
How to Design a Transformer with Fractional Turns
| focus.ti.com/lit/ml/slup200/slup200.pdf
By Lloyd H. Dixon,
Jr.
How do we Design a Rectifier Safety Transformer for Feed
to Voltage Controllers of 5Vdc,1Adc and 2x12Vdc,0.1Adc With RC-Load
in Accordance With IEC 61558? | rale.ch/aspnet_client/Examles/CAL0005e/CAL0005E.pdf
From Rale Engineering.
How Should One Design a Low Inrush Current Universal
Control Transformer For 800VA Continuous Output Power as Per IEC
61558? | rale.ch/aspnet_client/Examles/CAL0007e/CAL0007E.html
From Rale Engineering.
How Transformers, Chokes and Inductors Work, and Properties
of Magnetics | coilws.com/magneticandhow.html
From Coilws.com,
Inc.
Ideal Transformers Aid in Balanced-Line Analysis
| edn.com/article/CA63744.html?1=1
From EDN, by Alan Victor.
Inductor & Flyback Transformer Design |
focus.ti.com/lit/ml/slup127/slup127.pdf
From Texas Instruments
Incorporated.
Inside Transformers | du.edu/~jcalvert/tech/transfor.htm
How a transformer works, and how to design them. Dissection of a
transformer, University of Denver.
Isolation Transformer Passes Millihertz Signals
| edn.com/archives/1994/080494/16di3.htm
From EDN, by George
Kassabian.
Midcom's Tips for Transformer Modeling | midcom-inc.com/Tech/pdf/tn82.pdf
From Midcom, Inc., by Dave LeVasseur.
Model a Nonideal Transformer in Spice | edn.com/article/CA46932.html?1=1
From EDN, by Vittorio Ricchiuti.
Optimization of a Flyback Transformer Winding Considering
Two-Dimensional Field Effects, Cost And Loss | thayer.dartmouth.edu/other/inductor/papers/sfdcl.pdf
From Dartmouth College, by Charles R. Sullivan and Tarek Abdallah.
Output Transformer Design and Winding | geofex.com/Article_Folders/xformer_des/xformer.htm
By R.G. Keen.
Parasitic Capacitance Effects in Step-up Transformer
Design | linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1042,C1031,C1061,P1266,D4131
From Linear Technology.
Power Transformer Design | focus.ti.com/lit/ml/slup126/slup126.pdf
From Texas Instruments Incorporated.
Power Transformer Specification Formulae | premmagnetics.com/powerspec.html
From Prem Magnetics, Inc.
Project Thor Design Guidelines | elisanet.fi/dncmrc/thorguid.htm
Within this project a Tesla resonance transformer is analyzed, designed
and built for study and research.
Pulse Transformers | rhombus-ind.com/app-note/circuit.pdf
Application note from Rhombus Industries Inc.
RF Balun Transformers | macom.com/Application
Notes/pdf/m565.pdf
Application note from M/A-COM.
RF Transformers | minicircuits.com/pages/pdfs/tran14-2.pdf
Application note from Mini-Circuits.
Soft Magnetic Materials for Audio Transformers: History,
Production, and Applications | sowter.co.uk/pdf/GAVS.pdf
By G.A.V. Sowter.
Suppression of Powerline Noise
with Isolation Transformers | blackmagic.com/ses/bruceg/EMC/isolatrans.html
By Bruce C. Gabrielson and Mark J. Reimold.
TOPSwitch® Flyback Transformer Construction Guide
| powerint.com/PDFFiles/an18.pdf
Application note from Power
Integrations, Inc.
Transformer Design Consideration for off-line Flyback
Converters using Fairchild Power Switch (FPSTM) | fairchildsemi.com/an/AN/AN-4140.pdf
Application note from Fairchild Semiconductor Corporation.
Transformer Design Philosophies | lundahl.se/pdfs/papers/design_philosophies.pdf
From Lundahl Transformers.
Transformer Designs Keep Pace With DC/DC Converter Technology
| electronicproducts.com/ShowPage.asp?SECTION=3700&PRIMID=&FileName=CANDD.apr2004.HTML
From Electronic Products, by Rob Hill.
Transformer Facts | toroid.com/custom_transformers/technical_bulletin_1.htm
Application Notes on Rectifier Transformers from Toroid Corporation
of Maryland.
Transformer Impedance Measurements | ridleyengineering.com/imped.htm
From Ridley Engineering, Inc.
Transformer Measurements | home.earthlink.net/~jimlux/hv/xfmrmeas.htm
By Jim Lux.
Transformer Polarization | rhombus-ind.com/app-note/degauss.pdf
Application note from Rhombus Industries Inc.
Winding Arrangements of Output Transformers
| lundahl.se/pdfs/papers/outp_typ.pdf
From Lundahl Transformers.
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