FR2472902B1 - - Google Patents
Info
- Publication number
- FR2472902B1 FR2472902B1 FR8027501A FR8027501A FR2472902B1 FR 2472902 B1 FR2472902 B1 FR 2472902B1 FR 8027501 A FR8027501 A FR 8027501A FR 8027501 A FR8027501 A FR 8027501A FR 2472902 B1 FR2472902 B1 FR 2472902B1
- Authority
- FR
- France
- 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
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
- H05B41/46—Circuits providing for substitution in case of failure of the lamp
-
- 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
- H05B35/00—Electric light sources using a combination of different types of light generation
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10769879A | 1979-12-27 | 1979-12-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2472902A1 FR2472902A1 (fr) | 1981-07-03 |
FR2472902B1 true FR2472902B1 (fr) | 1985-04-05 |
Family
ID=22317981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8027501A Granted FR2472902A1 (fr) | 1979-12-27 | 1980-12-24 | Dispositif d'eclairage a lampe a arc a niveaux d'eclairement haut et bas |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS56116297A (fr) |
DE (1) | DE3048890A1 (fr) |
FR (1) | FR2472902A1 (fr) |
GB (1) | GB2066596B (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4495446A (en) * | 1982-12-27 | 1985-01-22 | General Electric Company | Lighting unit with improved control sequence |
US4471268A (en) * | 1982-12-27 | 1984-09-11 | General Electric Company | Lighting unit having power supply with improved switching means |
NL8205026A (nl) * | 1982-12-29 | 1984-07-16 | Philips Nv | Inrichting voorzien van een met tenminste twee inwendige elektroden uitgeruste metaaldampontladingsbuis. |
US4763044A (en) * | 1986-01-23 | 1988-08-09 | Hubbell Incorporated | Start, hot restart and operating lamp circuit |
AU587100B2 (en) * | 1986-01-23 | 1989-08-03 | Hubbell Incorporated | Start, hot restart and operating lamp circuit |
US5866993A (en) * | 1996-11-14 | 1999-02-02 | Pacific Scientific Company | Three-way dimming ballast circuit with passive power factor correction |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527982A (en) * | 1968-07-31 | 1970-09-08 | Gen Electric | Discharge lamp ballasting |
US4151445A (en) * | 1978-02-15 | 1979-04-24 | General Electric Company | Instant light lamp control circuit |
-
1980
- 1980-12-10 GB GB8039638A patent/GB2066596B/en not_active Expired
- 1980-12-23 DE DE19803048890 patent/DE3048890A1/de not_active Withdrawn
- 1980-12-24 FR FR8027501A patent/FR2472902A1/fr active Granted
- 1980-12-25 JP JP18297080A patent/JPS56116297A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS56116297A (en) | 1981-09-11 |
FR2472902A1 (fr) | 1981-07-03 |
DE3048890A1 (de) | 1981-09-10 |
GB2066596B (en) | 1984-02-29 |
GB2066596A (en) | 1981-07-08 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |