JPS5084065A - - Google Patents
Info
- Publication number
- JPS5084065A JPS5084065A JP49130391A JP13039174A JPS5084065A JP S5084065 A JPS5084065 A JP S5084065A JP 49130391 A JP49130391 A JP 49130391A JP 13039174 A JP13039174 A JP 13039174A JP S5084065 A JPS5084065 A JP S5084065A
- Authority
- JP
- Japan
- 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.)
- Pending
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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US416921A US3904922A (en) | 1973-11-19 | 1973-11-19 | Lamp control and lamp switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5084065A true JPS5084065A (en) | 1975-07-07 |
Family
ID=23651847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49130391A Pending JPS5084065A (en) | 1973-11-19 | 1974-11-12 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3904922A (en) |
| JP (1) | JPS5084065A (en) |
| DE (1) | DE2442198A1 (en) |
| FR (1) | FR2251982B1 (en) |
| GB (2) | GB1487585A (en) |
| NL (1) | NL7414022A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4723098A (en) * | 1980-10-07 | 1988-02-02 | Thomas Industries, Inc. | Electronic ballast circuit for fluorescent lamps |
| US4477748A (en) * | 1980-10-07 | 1984-10-16 | Thomas Industries, Inc. | Solid state ballast |
| FI65524C (en) * | 1982-04-21 | 1984-05-10 | Helvar Oy | FOER REFRIGERATION FOER MATNING AVERAGE REQUIREMENTS FOR FLUORESCENT LAMPS |
| US4873471A (en) * | 1986-03-28 | 1989-10-10 | Thomas Industries Inc. | High frequency ballast for gaseous discharge lamps |
| DE3713312A1 (en) * | 1987-04-18 | 1989-02-02 | Manfred Prof Dipl Ing Fender | Controllable AC source for gas-discharge paths for light production and ozone production |
| US5001386B1 (en) * | 1989-12-22 | 1996-10-15 | Lutron Electronics Co | Circuit for dimming gas discharge lamps without introducing striations |
| US5118992A (en) * | 1990-04-17 | 1992-06-02 | North American Philips Corporation | Fluorescent lamp controlling arrangement |
| US5173643A (en) * | 1990-06-25 | 1992-12-22 | Lutron Electronics Co., Inc. | Circuit for dimming compact fluorescent lamps |
| US5952794A (en) * | 1997-10-02 | 1999-09-14 | Phillips Electronics North America Corportion | Method of sampling an electrical lamp parameter for detecting arc instabilities |
| US8829412B1 (en) * | 2011-04-25 | 2014-09-09 | Dgi Creations, Llc | Remote monitoring of glow tube light output including a logic unit maintaining an indication of a monitored glow tube discharge while no discharge is detected |
| US11004883B2 (en) * | 2019-04-04 | 2021-05-11 | Synaptics Incorporated | System and method for optical sensing |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3143665A (en) * | 1961-04-17 | 1964-08-04 | Rotax Ltd | Silicon control rectifier switching circuit having variable delay |
| US3328669A (en) * | 1964-09-18 | 1967-06-27 | Engelhard Hanovia Inc | Firing circuit for silicon controlled inverter circuit |
| US3341737A (en) * | 1964-10-14 | 1967-09-12 | Westinghouse Electric Corp | Constant current supply especially for fluorescent lamps |
| US3700960A (en) * | 1971-09-23 | 1972-10-24 | Gen Electric | Metal halide lamp system |
-
1973
- 1973-11-19 US US416921A patent/US3904922A/en not_active Expired - Lifetime
-
1974
- 1974-09-04 DE DE2442198A patent/DE2442198A1/en active Pending
- 1974-10-25 NL NL7414022A patent/NL7414022A/en unknown
- 1974-11-12 GB GB16926/77A patent/GB1487585A/en not_active Expired
- 1974-11-12 JP JP49130391A patent/JPS5084065A/ja active Pending
- 1974-11-12 GB GB48869/74A patent/GB1487584A/en not_active Expired
- 1974-11-19 FR FR7438049A patent/FR2251982B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1487584A (en) | 1977-10-05 |
| FR2251982A1 (en) | 1975-06-13 |
| US3904922A (en) | 1975-09-09 |
| NL7414022A (en) | 1975-01-31 |
| GB1487585A (en) | 1977-10-05 |
| DE2442198A1 (en) | 1975-05-22 |
| FR2251982B1 (en) | 1978-10-13 |