Technical Papers

A Novel 10KW 2-U Three-Phase Unity Power Factor Rectifier Module using Schott Helical Wound Technology
This paper describes the use of Schott 33299 Helical Wound Technology Input Inductor based on HWT™ Series 193, datasheets available at

Date Posted: 11/6/2001

Improved PFC Boost Choke using a Quasi-Planar Winding Configuration
A novel approach to boost inductor design using a quasi-planar winding configuration consisting of a helical wound flat copper coil to develop high ampere-turn capability for use in high current power factor correction boost circuits is presented. By comparing this approach with four other commonly used boost choke configurations, the advantage of this approach is demonstrated.

Date Posted: 9/1/2000

xDSL Tutorial
With the rapid growth of xDSL technology many people feel confused by what exactly “xDSL technology” means. Adding to the confusion, there are a swarm of acronyms and jargon. The intend of this paper is to alleviate some of the uncertainty by explaining what the terms mean and to give resources on where to find more information. Technical information and the applicable standards have been included where appropriate.

Date Posted: 8/1/2000

A New Planar Output inductor for High Current, Low Voltage, DC-DC Converters
A new, low profile, low loss, high power density output inductor, made utilizing high frequency low loss ferrite and an extremely low loss planar winding configuration for use in high current, low voltage DC-DC converters is presented. The key parameters of the output inductor that affect the total performance of the DC-DC Converter are characterized in this paper.

Date Posted: 8/1/2000


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