CA1071294A - Automatic energy control lighting system with automatically variable dc source - Google Patents

Automatic energy control lighting system with automatically variable dc source

Info

Publication number
CA1071294A
CA1071294A CA248,934A CA248934A CA1071294A CA 1071294 A CA1071294 A CA 1071294A CA 248934 A CA248934 A CA 248934A CA 1071294 A CA1071294 A CA 1071294A
Authority
CA
Canada
Prior art keywords
voltage
output
amplifier
resistor
signal
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
CA248,934A
Other languages
English (en)
French (fr)
Inventor
Eric L. H. Nuver
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.)
Esquire Inc
Original Assignee
Esquire Inc
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 Esquire Inc filed Critical Esquire Inc
Application granted granted Critical
Publication of CA1071294A publication Critical patent/CA1071294A/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
    • H05B41/392—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

  • Circuit Arrangement For Electric Light Sources In General (AREA)
CA248,934A 1975-05-27 1976-03-26 Automatic energy control lighting system with automatically variable dc source Expired CA1071294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58127075A 1975-05-27 1975-05-27

Publications (1)

Publication Number Publication Date
CA1071294A true CA1071294A (en) 1980-02-05

Family

ID=24324529

Family Applications (1)

Application Number Title Priority Date Filing Date
CA248,934A Expired CA1071294A (en) 1975-05-27 1976-03-26 Automatic energy control lighting system with automatically variable dc source

Country Status (9)

Country Link
AU (1) AU504533B2 (de)
BE (1) BE841405A (de)
BR (1) BR7602759A (de)
CA (1) CA1071294A (de)
DE (1) DE2622392A1 (de)
ES (1) ES448493A1 (de)
FR (1) FR2313837A1 (de)
GB (1) GB1522533A (de)
IT (1) IT1073959B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1177111A (en) * 1982-02-17 1984-10-30 Carl Schweer Lamp dimmer
AT376781B (de) * 1982-04-16 1984-12-27 Zumtobel Ag Stromsparende arbeitsplatzleuchte
US4721890A (en) * 1982-06-18 1988-01-26 Eg&G, Inc. Power supply circuit for an alkali vapor spectral lamp
JPS60120337A (ja) * 1983-12-05 1985-06-27 Sanpack:Kk ビデオ等の撮影用光源
NO158389C (no) * 1985-03-04 1988-08-31 Sintef Anordning for styring av belysningsarmatur.
FR2604540B1 (fr) * 1986-09-30 1989-07-07 Develop Prod Electro Et Dispositif d'alimentation electrique d'une source lumineuse utilisant des lampes a halogene

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1410742A (fr) * 1964-10-07 1965-09-10 Philips Nv Dispositif pour commander l'éclairage dans un espace obscur
US3361931A (en) * 1965-01-11 1968-01-02 Mc Graw Edison Co Photocontrol device for gaseous discharge lamps
US3681654A (en) * 1971-02-18 1972-08-01 Wagner Electric Corp Light-regulating power supply circuit for gaseous discharge lamp

Also Published As

Publication number Publication date
FR2313837A1 (fr) 1976-12-31
DE2622392A1 (de) 1976-12-09
IT1073959B (it) 1985-04-17
BE841405A (fr) 1976-09-01
BR7602759A (pt) 1977-11-16
AU1324576A (en) 1977-10-27
ES448493A1 (es) 1977-07-01
GB1522533A (en) 1978-08-23
FR2313837B1 (de) 1980-09-05
AU504533B2 (en) 1979-10-18

Similar Documents

Publication Publication Date Title
US4009387A (en) Automatic energy control lighting system with automatically variable dc source
CA1265841A (en) Slow acting photo lamp control
US5194782A (en) Dimmer for fluorescent lamp
US5404080A (en) Lamp brightness control circuit with ambient light compensation
US4346331A (en) Feedback control system for applying AC power to ballasted lamps
US4902958A (en) Incandescent light regulation and intensity controller
EP0753986B1 (de) Einrichtung für den optimierten Einsatz von Entladungslampen
EP0447136B1 (de) Automatische Beleuchtungssteuerungsmethode
US7608807B2 (en) Closed loop daylight harvesting light control system having auto-calibration
US6353291B1 (en) Electroluminescent lamp controller
US3416032A (en) Lamp dimming circuit
CA1117611A (en) Tight tolerance zero crossing detector circuit
CN103874285A (zh) 用于led调光器的自适应保持电流控制
US4347461A (en) Incident illumination responsive light control
JPH0323928B2 (de)
EP0418253A4 (en) Regulating a.c. power controller and method
CA1071294A (en) Automatic energy control lighting system with automatically variable dc source
US4117453A (en) Vehicle headlamp control circuits
US4437043A (en) Lighting control for high intensity discharge lamp
EP0053896A1 (de) Helligkeitsregeleinrichtung
US6969955B2 (en) Method and apparatus for dimming control of electronic ballasts
US8466631B1 (en) Lamp driver with triac dimmer compensation
US4320326A (en) Electronic device for controlling the brightness of an electric gas discharge lamp without an incandescent cathode
GB2095930A (en) Constant power ballast
US4219761A (en) Incandescent lamp dimmer providing control voltage IES square law compliance correction

Legal Events

Date Code Title Description
MKEX Expiry