Title:
A METHOD AND APPARATUS FOR CONTROLLING A LOAD
Document Type and Number:
WIPO Patent Application WO/2016/046814
Kind Code:
A3
Abstract:
A method and apparatus for switching AC power to a lamp (or other load) via a two terminal switch device. The switch device comprises a first electrically controlled switch, such as a triac or relay, and a second electrically controlled resistance or switch connected in series to the first switch. A diode is connected in parallel to the second switch. When the first switch is open, only a leakage current is flowing through the switch device, supplied to an AC/DC converter for producing a low DC voltage to the switch device logic and other low-voltage circuits and for charging a capacitor. When the first switch is closed, the second switch is controlled to be conductive for allowing powering the lamp from the AC power. During part of a positive half-cycle of the AC voltage, a closed loop regulates a DC voltage over the second switch terminals for providing a low DC voltage for charging a capacitor. At least during a negative half-cycle of the AC voltage, the low DC voltage is provided from the capacitor.
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JPH0685356 | Description: Step-down lighting device |
Inventors:
ZIV AMICHAI (IL)
Application Number:
PCT/IL2015/050946
Publication Date:
May 12, 2016
Filing Date:
September 20, 2015
Export Citation:
Assignee:
SWITCHBEE LTD (IL)
International Classes:
H05B39/02; H05B39/04
Foreign References:
US6867558B2 | 2005-03-15 | |||
US20110193495A1 | 2011-08-11 | |||
US20110279053A1 | 2011-11-17 | |||
US20140167912A1 | 2014-06-19 | |||
US20120044350A1 | 2012-02-23 | |||
US20020011923A1 | 2002-01-31 | |||
US20140125230A1 | 2014-05-08 |
Other References:
See also references of EP 3198999A4
Attorney, Agent or Firm:
SHEM TOV, Dorit (02 Ramat-Gan, IL)
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