Choosing Core for Flyback Transformer and Choke Designs
Aug 1, 2003
Soft magnetic materials - materials that can easily be magnetized - come in many forms. For switchmode power supply flyback transformers and chokes, we would consider gapped ferrites, Iron powder, Permalloy powder, High Flux Powder, Fe-Si-Al Powder and similar....
SMT Power Inductors: Packing More Performance into Tiny Packages
Jul 1, 2003
Compact, powerful, and easy to work with, SMT magnetics are becoming a mainstay in power supplies of all kinds. This special report uncovers latest developments on this front as developers wring more performance from a miniature package....
Guide to Selecting Inductors for Switching Regulators
Jul 1, 2003
Selecting an off-the-shelf inductor with correct inductance value for a switching regulator is no simple process. Here's a guide that simplifies this process....
Designing Flyback Transformer for Discontinuous Mode
Apr 1, 2003
Why have an air gap? This column illustrates an example of the function of an air gap in a ferrite core for the design of a flyback transformer for discontinuous mode of operation....
Multi-Chambered Planar Magnetics Blends Inductors and Transformers
Apr 1, 2003
New planar construction alternatives for blending various power magnetic components of switchmode power processing circuits and systems are based on the use of core designs with multiple winding areas and core sections, providing common flux paths for transformer and inductor operations....
Low-Temp Co-Fired Magnetic Tape Yields High Benefits
Jan 1, 2003
Low-temperature co-fired ceramic (LTCC) ferrite combined with screen printable silver conductor and low permeability dielectric produce small, low power, low profile transformers - with no wire or discrete core....
Why Have an Air Gap?
Dec 1, 2002
What exactly is the function of the air gap? When asked this question, most engineers respond, It prevents core saturation. Although this may be true in certain cases, it's not true in general....
CAD/CAE Software Aids Converter Design
Jul 1, 2002
Before the availability of computer-aided engineering software designed to run on PCs, engineers had little choice but to simplify assumptions for ballpark estimates of system performance. As a result, magnetic circuit analogies were used in place of true field analysis, and frequency response methods were used to evaluate stability in place of actual transient analysis....
Inductor Core Technology Shrinking Power Supplies
Jul 1, 2002
Washer-shaped toroids meet the inductor requirements for compact power supplies - low height, low core cost, single-piece core assembly, good heat dissapation, no bobbin, and good shielding....
Exploring Current Transformer Applications
Jun 1, 2002
For a variety of applications, using current transformers is an efficient way to sense current with minimum insertion loss....
