Spangler Prototype

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Power Factor Corrected | APEC 1991 | IAS 1991 PFC Techniques | APEC 1992 Boston
PCIM 2002 Chicago | PCIM 2002 Chicago Slides
Power Metering Fundamentals March 2011
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Spangler Prototype, Inc. (SPI)

Power Electronics Engineering Design Services

Section of Power Factor SchematicInductor and Transformer Design
Electronic Ballast: Flourescent Lamp and LED
Automotive Power Supplies: Engine and Body Modules
Single Phase Power Factor Correction Solutions

Spangler Prototype, Inc. (SPI)

Spangler Prototype, Inc. (SPI) has been providing solutions since 1980 in Bolingbrook, Illinois. We take pride in ourselves for providing prompt and economical design services covering a wide range of solutions from electronic flourescent lamp ballasts to inductor and transformer design. Now located in Elgin, Illinois, Spangler Prototype continues to serve, both, national and international interests.

Power Factor Corrected This section discusses the subject of power factor correction and its importance in the field of power conversion. Present industry techniques are discussed, and by combining portions of these methods, a new circuit is created that provides power factor correction at 90% or greater. A multiple-output blocking oscillator and a P.W.M. were built to prove the theory with test results given.

EMIThis section presents methods and results to solve line conducted electromagnetic interference (EMI) for low wattage universal ac line input switching power supplies. The EMI noise reduction is shown for each technique. Techniques include the use of a common mode input coupled inductor, and X ac line capacitor, hot-to-cold ground Y capacitor, schottky rectifiers, and the use of ferrite beads.

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