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FR995874A - Improvements made to electric lamp circuits - Google Patents

Improvements made to electric lamp circuits

Info

Publication number
FR995874A
FR995874A FR995874DA FR995874A FR 995874 A FR995874 A FR 995874A FR 995874D A FR995874D A FR 995874DA FR 995874 A FR995874 A FR 995874A
Authority
FR
France
Prior art keywords
improvements made
electric lamp
lamp circuits
circuits
electric
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
Other languages
French (fr)
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.)
EMI Group Ltd
Original Assignee
Thorn Electrical Industries Ltd
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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Application granted granted Critical
Publication of FR995874A publication Critical patent/FR995874A/en
Expired 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/391—Controlling the intensity of light continuously using saturable magnetic devices
FR995874D 1948-09-22 1949-09-20 Improvements made to electric lamp circuits Expired FR995874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB995874X 1948-09-22

Publications (1)

Publication Number Publication Date
FR995874A true FR995874A (en) 1951-12-10

Family

ID=10867304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR995874D Expired FR995874A (en) 1948-09-22 1949-09-20 Improvements made to electric lamp circuits

Country Status (1)

Country Link
FR (1) FR995874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426382A1 (en) * 1978-05-17 1979-12-14 Lesens Entr Elect L Discharge lamp stability circuit - has series inductance shunted by switch and is fed from auto-transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426382A1 (en) * 1978-05-17 1979-12-14 Lesens Entr Elect L Discharge lamp stability circuit - has series inductance shunted by switch and is fed from auto-transformer

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