GB577898A - Improvements in combinations of hpmv electric discharge devices with means for operating them - Google Patents

Improvements in combinations of hpmv electric discharge devices with means for operating them

Info

Publication number
GB577898A
GB577898A GB7643A GB7643A GB577898A GB 577898 A GB577898 A GB 577898A GB 7643 A GB7643 A GB 7643A GB 7643 A GB7643 A GB 7643A GB 577898 A GB577898 A GB 577898A
Authority
GB
United Kingdom
Prior art keywords
hpmv
combinations
operating
electric discharge
discharge devices
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
GB7643A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB7643A priority Critical patent/GB577898A/en
Priority to ES173625A priority patent/ES173625A1/en
Publication of GB577898A publication Critical patent/GB577898A/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
    • H05B41/40—Controlling the intensity of light discontinuously
    • H05B41/42—Controlling the intensity of light discontinuously in two steps only

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

577,898. Supply systems for space discharge apparatus. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., and NELSON, E. H. Jan. 1, 1943, No. 76. [Class 38 (iv)] To change the power dissipated in a HPMV lamp, for example from full to half rating, an impedance is connected in parallel with the lamp, preferably with a simultaneous change in the series impedance, during the operation of the lamp. Ganged switches may be used.
GB7643A 1943-01-01 1943-01-01 Improvements in combinations of hpmv electric discharge devices with means for operating them Expired GB577898A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7643A GB577898A (en) 1943-01-01 1943-01-01 Improvements in combinations of hpmv electric discharge devices with means for operating them
ES173625A ES173625A1 (en) 1943-01-01 1946-05-18 COMBINATION OF AN ELECTRICAL DEVICE FOR DISCHARGE WITH MERCURY STEAM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7643A GB577898A (en) 1943-01-01 1943-01-01 Improvements in combinations of hpmv electric discharge devices with means for operating them

Publications (1)

Publication Number Publication Date
GB577898A true GB577898A (en) 1946-06-05

Family

ID=9697972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7643A Expired GB577898A (en) 1943-01-01 1943-01-01 Improvements in combinations of hpmv electric discharge devices with means for operating them

Country Status (2)

Country Link
ES (1) ES173625A1 (en)
GB (1) GB577898A (en)

Also Published As

Publication number Publication date
ES173625A1 (en) 1946-07-01

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