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App Notes


This section contains useful application notes to assist engineers better understand various applications of ferrite for EMI suppression, use of transformers, inductors, chokes, etc.

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How to choose Iron Powder, Sendust, Koolmu, High Flux and MPP Cores as output inductor and chokes
A short summary on How to Choose what types of powder cores with distributed air gaps to use in designing power inductors and chokes.

Understanding Properties of Magnetics, Inductors and Transformers
This describes some basic information about the properties of magnetics and how inductor and transformer work.
A short summary.

Application Notes for 50/60Hz CT-Series Current Transformers
A short summary on current transformers and how to use Coil Winding Specialist Inc's CT Series Current Transformers.

Reference Designs of Switch Mode Power Supplies using TOPSWITCH and TINYSWITCH
This section shows 8 different designs using Power Integration's TOPSWITCH and TINYSWITCH. These designs consist of a 1.3W ( 7.5Vo), 1.5W (9.0Vo), 3.6W (5.2Vo), 5W ( 5.0Vo), 15W (7.5Vo), 30W (15Vo), 13.55Vo and a 5 outputs circuits.

Advances in Power Sources
This article, written by K Kit Sum, gives a historical briefs on the advances in power supplies. It lists hundreds of references and sources for anyone who needed more information in the field of power supplies. A must read for students doing research on power supplies.

Understanding EMC Standards and Filter Specifications
This describes the EMC regulations and standards mainly for products sold to European countries as the EMC rules are strictly enforced in Europe.

Types of Surface Mount Inductors
Describes the various types of surface mount inductors - shielded from RFI/EMc radiations, unshielded types for lower cost, high current types, etc.

Types of Tape Wound Toroidal Cores
Describes types of tape wound cores and lamination transformers

What is a Transmission Line Transformer
Transmission line transformers are high frequency impedance matching devices over a wide freqeuncy range - typically 1 to 50 Mhz range at power rating of up to 10 kW. Designed by Dr. Jerry Sevick.

Cross referencing and multi-sources

Flat Transformers - Application Notes
Examples of using the flat matrix transformers

Selected Articles on Power Electronics by our technical staffs
Need Power Inductors? CWS delivers the finest in surface mount inductors and standard inductors, power transformers, Common Mode Chokes, Ceramic Chip Inductors and Wire Wound Chip Inductors. CWS can supply all of your filtering needs as well, including EMI Filters, RFI Filters, LC Filter Inductors, and Common Mode Filters. From Transmission Line Transformers to power transformers, CWS is the source to call!

Disclaimer: Coil Winding Specialist, Inc., its affiliates, agents, and employees acting on behalf of Coil Winding Specialist, Inc. (collectively, “CWS”) disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. CWS reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice. CWS also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice. CWS highly recommends customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions. Customers using or selling CWS products for use in other than recommended applications do so entirely at their own risk and agree to fully indemnify CWS from any damages arising or resulting from such use or sale.


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Copyright © 2008, Coil Winding Specialist, Inc
Updated Jan, 2008