Two-wire dimmer with improved zero-cross detention

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11540365
APP PUB NO 20210282238A1
SERIAL NO

17215332

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Abstract

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A lighting device, such as a two-wire lighting control device, may include a controllably conductive device and a control circuit. The controllably conductive device may supply an AC line voltage to a load in response to a dive signal such that the controllable conductive device is non-conductive for a first duration of time and conductive for a second duration of time within a half-cycle of the AC line voltage. The control circuit may receive a signal from the controllably conductive device that represents a voltage developed across the controllable conductive device during the first duration of time. The control circuit may generate a sine-wave-shaped signal that complements the voltage developed across the controllably conductive device during the second duration of time. The control circuit may also filter the signal from the controllably conductive device during the first duration of time and the sine-wave-shaped signal during the second duration of time.

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Patent Owner(s)

  • LUTRON TECHNOLOGY COMPANY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kite, Henry Cambridge, GB 6 44
Yang, Bingrui Cupertino, US 24 330
Zotter, William Coopersburg, US 18 109

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