TWO-WIRE DIMMER SWITCH WITH IMPROVED ZERO CROSS DETECTION
A two-wire lighting control device including a controllably conductive device (508), a signal generation circuit (522), and a filter circuit (526). The controllably conductive device receives an AC line voltage and supplies a phase-control signal to a load by being conductive for a first duration of...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
16.11.2022
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Subjects | |
Online Access | Get full text |
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Abstract | A two-wire lighting control device including a controllably conductive device (508), a signal generation circuit (522), and a filter circuit (526). The controllably conductive device receives an AC line voltage and supplies a phase-control signal to a load by being conductive for a first duration of time and non-conductive for a second duration of time within a half-cycle of the AC line voltage. The signal generation circuit generates a non-zero-magnitude signal. And, the filter circuit receives a signal from the controllably conductive device during the first duration of time and the non-zero-magnitude signal from the signal generation circuit during the second duration of time. The non-zero-magnitude signal is adapted to fill-in or complement the signal from the controllably conductive device, so that any delay variation as a function of the firing angle of the controllably conductive device through the filter circuit is mitigated by the presence of the non-zero-magnitude signal. |
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AbstractList | A two-wire lighting control device including a controllably conductive device (508), a signal generation circuit (522), and a filter circuit (526). The controllably conductive device receives an AC line voltage and supplies a phase-control signal to a load by being conductive for a first duration of time and non-conductive for a second duration of time within a half-cycle of the AC line voltage. The signal generation circuit generates a non-zero-magnitude signal. And, the filter circuit receives a signal from the controllably conductive device during the first duration of time and the non-zero-magnitude signal from the signal generation circuit during the second duration of time. The non-zero-magnitude signal is adapted to fill-in or complement the signal from the controllably conductive device, so that any delay variation as a function of the firing angle of the controllably conductive device through the filter circuit is mitigated by the presence of the non-zero-magnitude signal. |
Author | ZOTTER, William YANG, Bingrui KITE, Henry |
Author_xml | – fullname: KITE, Henry – fullname: ZOTTER, William – fullname: YANG, Bingrui |
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DocumentTitleAlternate | COMMUTATEUR GRADATEUR À DEUX FILS PRÉSENTANT UNE MEILLEURE DÉTECTION DU PASSAGE PAR ZÉRO ZWEIDRAHT-DIMMERSCHALTER MIT VERBESSERTEM NULLDURCHGANGSDETEKTOR |
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Notes | Application Number: EP20220163519 |
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Snippet | A two-wire lighting control device including a controllably conductive device (508), a signal generation circuit (522), and a filter circuit (526). The... |
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SubjectTerms | ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY |
Title | TWO-WIRE DIMMER SWITCH WITH IMPROVED ZERO CROSS DETECTION |
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