CA2255641A1 - Series connected light string with filament shunting - Google Patents

Series connected light string with filament shunting

Info

Publication number
CA2255641A1
CA2255641A1 CA002255641A CA2255641A CA2255641A1 CA 2255641 A1 CA2255641 A1 CA 2255641A1 CA 002255641 A CA002255641 A CA 002255641A CA 2255641 A CA2255641 A CA 2255641A CA 2255641 A1 CA2255641 A1 CA 2255641A1
Authority
CA
Canada
Prior art keywords
series connected
light string
connected light
string
shunt
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.)
Granted
Application number
CA002255641A
Other languages
French (fr)
Other versions
CA2255641C (en
Inventor
John L. Janning
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2255641A1 publication Critical patent/CA2255641A1/en
Application granted granted Critical
Publication of CA2255641C publication Critical patent/CA2255641C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/10—Circuits providing for substitution of the light source in case of its failure
    • H05B39/105—Circuits providing for substitution of the light source in case of its failure with a spare lamp in the circuit, and a possibility of shunting a failed lamp
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/23—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in series

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A string of series connected incandescent bulbs (12-21) in which substantially all of the bulb filaments in the set are individually provided with a shunt element (31) which is inoperative during the normal operation of the set and is operative to provide the shunt only when an increase in the voltage across the shunt element exceeded a predetermined value, whereby continued flow of rated current continues to flow through said string even though a plurality of bulbs are missing from their respective sockets.
CA002255641A 1996-05-28 1997-02-03 Series connected light string with filament shunting Expired - Fee Related CA2255641C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US65397996A 1996-05-28 1996-05-28
US08/653,979 1996-05-28
PCT/US1997/001831 WO1997046055A1 (en) 1996-05-28 1997-02-03 Series connected light string with filament shunting

Publications (2)

Publication Number Publication Date
CA2255641A1 true CA2255641A1 (en) 1997-12-04
CA2255641C CA2255641C (en) 2002-06-25

Family

ID=24623040

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002255641A Expired - Fee Related CA2255641C (en) 1996-05-28 1997-02-03 Series connected light string with filament shunting

Country Status (7)

Country Link
JP (1) JPH11509974A (en)
CN (1) CN1220076A (en)
CA (1) CA2255641C (en)
DE (2) DE19781744T1 (en)
GB (1) GB2327307B (en)
HK (1) HK1017226A1 (en)
WO (1) WO1997046055A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597125B2 (en) 2001-05-17 2003-07-22 Jlj, Inc. Voltage regulated light string
US7178961B2 (en) 1995-06-26 2007-02-20 Jlj, Inc. Voltage regulated light string
US6084357A (en) * 1998-04-10 2000-07-04 Janning; John L. Series connected light string with filament shunting
DE19843330C2 (en) * 1998-09-22 2003-10-16 Diehl Stiftung & Co Cabin lighting
US7564666B2 (en) * 2006-05-02 2009-07-21 Semiconductor Components Industries, L.L.C. Shunt protection circuit and method therefor
TWI338105B (en) * 2006-10-02 2011-03-01 Ventur Res And Dev Corp Light string of leds
US8247999B2 (en) * 2008-01-22 2012-08-21 Alcatel Lucent Time division multiplexing a DC-to-DC voltage converter
GB2509099A (en) * 2012-12-20 2014-06-25 Accuric Ltd LED driver circuit

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1024495A (en) * 1910-10-26 1912-04-30 Edgar Booth Electric-lighting system.
US2072337A (en) * 1936-05-05 1937-03-02 Nofade Electric Corp Safety lighting circuit
FR884370A (en) * 1942-03-17 1943-08-11 Improvements in the supply of electrical devices
US2760120A (en) * 1955-10-26 1956-08-21 New York Merchandise Co Inc Lighting system for christmas trees
CH427021A (en) * 1964-07-03 1966-12-31 Danfoss As Device for compensating for the failure of a series resistor when connected in series, in particular when lighting a Christmas tree
US3639805A (en) * 1970-05-25 1972-02-01 Gen Motors Corp Series lamp safeguard circuit
US3912966A (en) * 1973-04-30 1975-10-14 Gen Electric Incandescent lamp series string having protection against voltage surges
US4450382A (en) * 1982-06-21 1984-05-22 The United States Of America As Represented By The Secretary Of The Army D.C. Lamp burn-out protection
US4682079A (en) * 1984-10-04 1987-07-21 Hallmark Cards, Inc. Light string ornament circuitry
US4727449A (en) * 1986-10-01 1988-02-23 Chiu Technical Corporation Filament bypass circuit
US5006724A (en) * 1989-03-20 1991-04-09 Liu Ching Chung Control device for light sets
FR2663183B1 (en) * 1990-06-07 1997-04-11 Fd Eclairage Architectural LOW VOLTAGE LAMP SUPPLY CIRCUIT ARRANGED IN SERIES.
JP3251583B2 (en) * 1991-02-27 2002-01-28 ロシュ ダイアグノスティックス コーポレーション How to communicate with microcomputer controlled instruments
US5539317A (en) * 1994-11-07 1996-07-23 Jlj, Inc. Circuit tester for Christmas tree light sets

Also Published As

Publication number Publication date
GB2327307A (en) 1999-01-20
DE19781744T1 (en) 1999-05-12
GB2327307B (en) 2000-02-16
CN1220076A (en) 1999-06-16
DE19781744B4 (en) 2006-03-02
WO1997046055A1 (en) 1997-12-04
GB9823170D0 (en) 1998-12-16
JPH11509974A (en) 1999-08-31
CA2255641C (en) 2002-06-25
HK1017226A1 (en) 1999-11-12

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed