IT1313814B1 - AUTOMATIC DEVICE FOR ADJUSTING THE LIGHT INTENSITY - Google Patents

AUTOMATIC DEVICE FOR ADJUSTING THE LIGHT INTENSITY

Info

Publication number
IT1313814B1
IT1313814B1 IT1999MI002292A ITMI992292A IT1313814B1 IT 1313814 B1 IT1313814 B1 IT 1313814B1 IT 1999MI002292 A IT1999MI002292 A IT 1999MI002292A IT MI992292 A ITMI992292 A IT MI992292A IT 1313814 B1 IT1313814 B1 IT 1313814B1
Authority
IT
Italy
Prior art keywords
adjusting
light intensity
automatic device
automatic
intensity
Prior art date
Application number
IT1999MI002292A
Other languages
Italian (it)
Inventor
Gian Pietro Beghelli
Original Assignee
Beghelli Spa
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 Beghelli Spa filed Critical Beghelli Spa
Priority to IT1999MI002292A priority Critical patent/IT1313814B1/en
Publication of ITMI992292A0 publication Critical patent/ITMI992292A0/en
Priority to EP00203774A priority patent/EP1098553A3/en
Priority to PL343587A priority patent/PL198777B1/en
Priority to CZ20004043A priority patent/CZ302222B6/en
Publication of ITMI992292A1 publication Critical patent/ITMI992292A1/en
Application granted granted Critical
Publication of IT1313814B1 publication Critical patent/IT1313814B1/en

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
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3924—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by phase control, e.g. using a triac
    • 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
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3922—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations and measurement of the incident light

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Eye Examination Apparatus (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Endoscopes (AREA)
IT1999MI002292A 1999-11-03 1999-11-03 AUTOMATIC DEVICE FOR ADJUSTING THE LIGHT INTENSITY IT1313814B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT1999MI002292A IT1313814B1 (en) 1999-11-03 1999-11-03 AUTOMATIC DEVICE FOR ADJUSTING THE LIGHT INTENSITY
EP00203774A EP1098553A3 (en) 1999-11-03 2000-10-30 Automatic lighting intensity regulating device
PL343587A PL198777B1 (en) 1999-11-03 2000-10-30 Method of and apparatus for controlling luminous flux intensity
CZ20004043A CZ302222B6 (en) 1999-11-03 2000-10-31 Automatic lighting intensity regulating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1999MI002292A IT1313814B1 (en) 1999-11-03 1999-11-03 AUTOMATIC DEVICE FOR ADJUSTING THE LIGHT INTENSITY

Publications (3)

Publication Number Publication Date
ITMI992292A0 ITMI992292A0 (en) 1999-11-03
ITMI992292A1 ITMI992292A1 (en) 2001-05-03
IT1313814B1 true IT1313814B1 (en) 2002-09-23

Family

ID=11383887

Family Applications (1)

Application Number Title Priority Date Filing Date
IT1999MI002292A IT1313814B1 (en) 1999-11-03 1999-11-03 AUTOMATIC DEVICE FOR ADJUSTING THE LIGHT INTENSITY

Country Status (4)

Country Link
EP (1) EP1098553A3 (en)
CZ (1) CZ302222B6 (en)
IT (1) IT1313814B1 (en)
PL (1) PL198777B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414493A (en) * 1981-10-06 1983-11-08 Thomas Industries Inc. Light dimmer for solid state ballast
GB8829844D0 (en) * 1988-12-21 1989-02-15 Yazdanian Sirous Control of fluorescent lights etc
US5404080A (en) * 1989-09-21 1995-04-04 Etta Industries, Inc. Lamp brightness control circuit with ambient light compensation
DE4123187A1 (en) * 1991-07-12 1993-01-14 Tridonic Bauelemente CONTROL UNIT FOR THE PULSE OPERATION OF GAS DISCHARGE LAMPS
DE4441140A1 (en) * 1994-11-18 1996-05-30 Hilite Lighting And Electronic Dimming circuit for fluorescent lamps

Also Published As

Publication number Publication date
ITMI992292A1 (en) 2001-05-03
PL198777B1 (en) 2008-07-31
EP1098553A3 (en) 2004-06-09
CZ20004043A3 (en) 2001-12-12
CZ302222B6 (en) 2010-12-29
EP1098553A2 (en) 2001-05-09
ITMI992292A0 (en) 1999-11-03
PL343587A1 (en) 2001-05-07

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