Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2008-06-24
2011-10-25
Choi, Jacob Y (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S276000
Reexamination Certificate
active
08044606
ABSTRACT:
A power supply for supplying power to a lamp with functions of dimming, over-current protection, over-voltage protection, arcing protection, and low-temperature start-up is provided. When frequency of the output current exceeds a predetermined value, the power supply is turned off to accomplish a dimming goal and extend lifetime of the lamp. When abnormal statuses such as open-circuited status, short-circuited status, or arcing status occur, a surge current induced by the abnormal statuses may be eliminated to prevent the power supply from being damaged. A high-frequency current detection circuit is configured to detect whether a current supplied to the high-voltage load is a high-frequency current to prevent damage to the electronic elements in the high-voltage load. A current adjusting circuit is configured to adjust an alternating current outputted to a lamp set in response to an environment temperature to supply an adequate alternating current at a low temperature for starting the lamp set.
REFERENCES:
patent: 7339329 (2008-03-01), Makimura et al.
patent: 7619368 (2009-11-01), Lu
patent: 7633776 (2009-12-01), Usui
patent: 7808191 (2010-10-01), Wu
patent: 2005/0023995 (2005-02-01), Ohnishi et al.
patent: 2005243343 (2005-09-01), None
First Office Action, mailed Jul. 13, 2011, received in counterpart Chinese Application No. 200710162322.6, 6 pgs.
English translation of First Office Action, mailed Jul. 13, 2011, received in counterpart Chinese Application No. 200710162322.6, 8 pgs.
English translation of abstract of JP 2005243343A, 1 pg.
Chang Shih-Hsien
Hsieh Ming-Chih
Huang Yao-Tien
Lee Hong-Chih
Choi Jacob Y
Colandreo, Esq. Brian J.
Delta Electronics , Inc.
Holland & Knight LLP
Placker, Esq. Jeffrey T.
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