Transformers II

Training Center Classroom

Welcome to this installment of EE Classroom on Transformers II.

Electronics may not be simple but there are devices that are simple – and simply elegant – but which still require an understanding of the challenges they can present when integrating into a design. Transformers are such a device; a device that is “simply” a pair of inductors magnetically coupled to enable electromagnetic induction between them. From electromagnetic induction to the coefficient of coupling to the turn, voltage, and current ratio, there are plenty of points to consider when working with transformers.

In this classroom, you’ll learn how to deal with non-ideal transformers, as well as the specification and applications of RF transformers. Get to know various power factor correction topologies, techniques for improving PoE designs and the magnetic components required for PoE installations. End “class” with the basics and applications of gate drive transformer, as well as flyback power converters.

For additional transformer basics and application articles, check out our other Transformer Classroom here.

Aimee Kalnoskas

Editor in Chief, EE World Online

Transformers II Classroom sponsored by: 

RF Transformers • Current Sensing

How does current sensing work?

RF transformer fabrication

RF transformer specifications

Dealing with non-ideal transformers

Common RF transformer functions and important electrical performance specifications.

Reviews Hall effect, induction sensing and resistive shunts, and use of current sense amplifiers.

A basic theoretical framework to assist in understanding the specifications of RF transformers.

Fabrication methods to mitigate the impact of the parasitics and optimize RF transformer characteristics.


Power Factor Correction topologies

Harness PoE efficiently

Magnetics for PoE

As look at basic power factor concepts, implementing PFC , and and active PFC topologies.

How to improve the efficiency of the PD system and to boost the efficiency of the flyback converter.

Standards, cabling, and variety of magnetic components required by PoE installations.

Featured Resources:

Technical Bulletin: Forward or Flyback? Which is Better? Both!

A Guide to Flyback Transformers

Current Sense Transformers for Switched-mode Power Supplies

A Guide to Gate Drive Transformers

Gate Drive Transformers • Flybacks

Gate drive transformers specifications and applications

Transformers for ultrasonic sensing

Flyback power converters

A review several applications for ultrasonic sensing and capabilities of transformer drives.

The flyback design offers some distinct advantages along with unique idiosyncrasies.

Gate drive transformers are often a good solution for providing galvanic isolation in high-frequency applications.

Headquartered in Cary, IL, Coilcraft has been a leader in the design, manufacture and distribution of high-performance magnetic components including RF chip inductors, power magnetics and filters since 1945. In addition to the industry’s largest selection of standard, off-the-shelf components, we also design and build custom magnetics to meet your precise requirements.

With manufacturing, distribution and engineering facilities across North America, Asia, and Europe, Coilcraft provides fast service, shipping, and response times, regardless of where you are in the world. Our global footprint allows us to produce components in multiple locations to support customers around the world and dramatically outperform industry-average lead times.

Copyright © WTWH Media, LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media. Privacy Policy