NO121509B - - Google Patents

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Info

Publication number
NO121509B
NO121509B NO1511/69A NO151169A NO121509B NO 121509 B NO121509 B NO 121509B NO 1511/69 A NO1511/69 A NO 1511/69A NO 151169 A NO151169 A NO 151169A NO 121509 B NO121509 B NO 121509B
Authority
NO
Norway
Prior art keywords
lamps
transistor
constant current
lamp
base
Prior art date
Application number
NO1511/69A
Other languages
English (en)
Norwegian (no)
Inventor
L Skagerlund
Original Assignee
Bofors Ab
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 Bofors Ab filed Critical Bofors Ab
Publication of NO121509B publication Critical patent/NO121509B/no

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0017—Visual time or date indication means in which the light emitting display elements may be activated at will or are controlled in accordance with the ambient light
    • 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
    • H05B47/10—Controlling the light source
    • H05B47/155—Coordinated control of two or more light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
NO1511/69A 1968-04-18 1969-04-14 NO121509B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE5207/68A SE309327B (de) 1968-04-18 1968-04-18

Publications (1)

Publication Number Publication Date
NO121509B true NO121509B (de) 1971-03-08

Family

ID=20265928

Family Applications (1)

Application Number Title Priority Date Filing Date
NO1511/69A NO121509B (de) 1968-04-18 1969-04-14

Country Status (5)

Country Link
CH (1) CH489077A (de)
DE (1) DE1918994A1 (de)
GB (1) GB1240231A (de)
NO (1) NO121509B (de)
SE (1) SE309327B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240105C3 (de) * 1972-08-16 1983-04-07 Norddeutsche Mende Rundfunk Kg, 2800 Bremen Schaltungsanordnung für eine Leuchtanzeige mit einem thermometerskalenähnlichen Aufbau
DE3011126C2 (de) * 1980-03-22 1984-08-30 Hartmann & Braun Ag, 6000 Frankfurt Schaltungsanordnung zur Speisung mehrerer in Reihe liegender steuerbarer Anzeigeelemente
DE3605658C3 (de) * 1986-02-21 1997-12-04 Diehl Gmbh & Co Elektronisches Schaltgerät
FR2602115B1 (fr) * 1986-07-24 1988-10-28 Estival Herve Dispositif de branchement particulier de lampes a incandescence
DE3632741A1 (de) * 1986-09-26 1988-03-31 Stahl R Schaltgeraete Gmbh Explosionsgeschuetzte anzeigeeinrichtung

Also Published As

Publication number Publication date
GB1240231A (en) 1971-07-21
SE309327B (de) 1969-03-17
DE1918994A1 (de) 1969-11-06
CH489077A (de) 1970-04-15

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