Timer-based switching circuit synchronization in an electrical dimmer

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United States of America Patent

PATENT NO 8664886
APP PUB NO 20130162168A1
SERIAL NO

13334760

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Abstract

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Timer-based switching circuit synchronization in an electrical dimmer is provided. The energizing of a switching circuit in a dimmer is synchronized with an AC wave to facilitate providing by the dimmer electrical power to a load. The synchronizing includes starting a timer having a predetermined timeout, responsive to receipt of a zero-crossing signal. Responsive to receipt of a subsequent zero-crossing signal prior to reaching the timeout, the timer is restarted, and responsive to expiration of the timeout, a switching circuit is energized at a predetermined firing angle with respect to the zero-crossing signal to supply electrical power to the load.

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Patent Owner(s)

  • LEVITON MANUFACTURING CO., INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ostrovsky, Michael Brooklyn, US 73 1086

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