Teledyne Technologies Incorporated

Teledyne Reynolds, Inc.

Victor Chen

George Panagotacos

Jeff Gucyski

A passive power factor correction (PFC) circuit is disclosed. It converts an AC input voltage into at least one DC output voltage. A diode bridge and a diode pair rectify the AC input voltage and provide first and second rectified voltages, respectively. A resistor applies the second rectified voltage to a first capacitor that stores the first voltage. A diode applies the first voltage to an inductor. The inductor applies the first rectified voltage to an output capacitor that stores the DC output voltage. The passive PFC circuit is intended to expand commonly used full-wave bridge rectifier and following storage capacitor. It can replace an input circuit, including low pass filter, in many applications even if improved power factor is not required. The passive PFC specifically targets size of the inductor while avoiding any switching, and maintaining power factor that challenges active PFC circuits. Early prototypes reached power factor of 0.99 while driving a 100 W load.

Passive power factor correction incorporating AC/DC conversion

An aircraft light source includes a first substrate having an array of electromagnetic energy emitters connected in series and configured to radiate electromagnetic energy at one or more than one predetermined wavelength. The first substrate is configured to connect to a second substrate and is configured to electrically couple to the array of electromagnetic energy emitters to an aircraft electrical power system. The aircraft light source includes a housing having a cylindrical portion and a base portion. The cylindrical portion is configured to couple to a lens and to receive the array of electromagnetic energy emitters. The base portion is adapted and configured to electrically couple to an electric socket suitable for an incandescent filament lamp in an aircraft illumination system.

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Marina Del Ray, CA, United States of America

Victor Chen