CA1013840A - Lamp failure detection system - Google Patents

Lamp failure detection system

Info

Publication number
CA1013840A
CA1013840A CA143,678A CA143678A CA1013840A CA 1013840 A CA1013840 A CA 1013840A CA 143678 A CA143678 A CA 143678A CA 1013840 A CA1013840 A CA 1013840A
Authority
CA
Canada
Prior art keywords
detection system
failure detection
lamp failure
lamp
failure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA143,678A
Other versions
CA143678S (en
Inventor
Donald F. Wright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Canada Inc
Original Assignee
Westinghouse Canada Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Canada Inc filed Critical Westinghouse Canada Inc
Priority to CA143,678A priority Critical patent/CA1013840A/en
Application granted granted Critical
Publication of CA1013840A publication Critical patent/CA1013840A/en
Expired legal-status Critical Current

Links

CA143,678A 1972-06-02 1972-06-02 Lamp failure detection system Expired CA1013840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA143,678A CA1013840A (en) 1972-06-02 1972-06-02 Lamp failure detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA143,678A CA1013840A (en) 1972-06-02 1972-06-02 Lamp failure detection system

Publications (1)

Publication Number Publication Date
CA1013840A true CA1013840A (en) 1977-07-12

Family

ID=4093436

Family Applications (1)

Application Number Title Priority Date Filing Date
CA143,678A Expired CA1013840A (en) 1972-06-02 1972-06-02 Lamp failure detection system

Country Status (1)

Country Link
CA (1) CA1013840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8482213B1 (en) 2009-06-29 2013-07-09 Panasonic Corporation Electronic ballast with pulse detection circuit for lamp end of life and output short protection
US8947020B1 (en) 2011-11-17 2015-02-03 Universal Lighting Technologies, Inc. End of life control for parallel lamp ballast

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8482213B1 (en) 2009-06-29 2013-07-09 Panasonic Corporation Electronic ballast with pulse detection circuit for lamp end of life and output short protection
US8947020B1 (en) 2011-11-17 2015-02-03 Universal Lighting Technologies, Inc. End of life control for parallel lamp ballast

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