JPS6484599A - Discharge light lighting device - Google Patents
Discharge light lighting deviceInfo
- Publication number
- JPS6484599A JPS6484599A JP24209287A JP24209287A JPS6484599A JP S6484599 A JPS6484599 A JP S6484599A JP 24209287 A JP24209287 A JP 24209287A JP 24209287 A JP24209287 A JP 24209287A JP S6484599 A JPS6484599 A JP S6484599A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- lamp
- light controlling
- stepwise
- impedance
- 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.)
- Pending
Links
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
PURPOSE:To prevent occurrence of moving stripes by serially connecting a circuit where light controlling impedance, stepwise light controlling switch and a circuit for setting tube current asymmetric are parallely connected, to a discharge lamp, in the case when the lamp is lighted with high frequency power with restless section. CONSTITUTION:When a discharge lamp 2 is lighted by operating a high frequency conversion circuit 1 with a fully smoothened power supply Vs, to the output side of a circuit 1, a circuit for setting tube current asymmetric composed of a stepwise light controlling impedance L1, stepwise light controlling switch S1, resistor R and diode D is parallely connected, while connected serially to the lamp 2. In the case of stepwise operation, the switch S1 is opened, and the impedance L1 is inserted as well as the circuit 3 is inserted in serial to the lamp. It is thus possible to prevent occurrence of stripes by supplying asymmetrical current to the lamp 2 at stepwise light controlling operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24209287A JPS6484599A (en) | 1987-09-26 | 1987-09-26 | Discharge light lighting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24209287A JPS6484599A (en) | 1987-09-26 | 1987-09-26 | Discharge light lighting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6484599A true JPS6484599A (en) | 1989-03-29 |
Family
ID=17084178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24209287A Pending JPS6484599A (en) | 1987-09-26 | 1987-09-26 | Discharge light lighting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6484599A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04220521A (en) * | 1990-03-12 | 1992-08-11 | Westinghouse Electric Corp <We> | Computation controlling apparatus for sensor data |
-
1987
- 1987-09-26 JP JP24209287A patent/JPS6484599A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04220521A (en) * | 1990-03-12 | 1992-08-11 | Westinghouse Electric Corp <We> | Computation controlling apparatus for sensor data |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES8102765A1 (en) | Fixed frequency, variable duty cycle, square wave dimmer for high intensity gaseous discharge lamp | |
DE60120563D1 (en) | CIRCUIT ARRANGEMENT FOR A LED LIGHTING MODULE | |
US4135115A (en) | Wattage reducing device for fluorescent fixtures | |
EP0265237A3 (en) | Control gear for high intensity gas discharge lighting | |
JPS5586063A (en) | Discharge lamp | |
CA2008041A1 (en) | Low voltage direct current (dc) powered fluorescent lamp | |
JPS6484599A (en) | Discharge light lighting device | |
AU6060794A (en) | Discharge lamp dimmer | |
AU4031489A (en) | A circuit for starting and operating a gas discharge lamp | |
ATE212173T1 (en) | CIRCUIT ARRANGEMENT | |
JPS6484596A (en) | Lighting device for discharge lamp | |
DE69809240D1 (en) | CONTROL DEVICE - AND CIRCUIT FOR LAMPS FOR HIGH FREQUENCY | |
JPS6444992A (en) | Discharged lamp lighting circuit | |
JPS6414899A (en) | Electric current adjusting method for electric-discharge lamp | |
DE59104073D1 (en) | AC ballast for electric discharge lamps. | |
JPS6484598A (en) | Discharge lamp lighting device | |
JPS5493875A (en) | Discharge lamp lighting apparatus | |
JPS52146978A (en) | Fluorescent lamp switch | |
TW349319B (en) | Apparatus for lighting a discharge lamp | |
FR2383576A1 (en) | Starter and supply circuit for fluorescent tubes - has series resonant circuit using current limiting choke for starting and variable resistance for light control | |
JPS5481684A (en) | Dimmer for high voltage discharge lamp | |
JPS52118976A (en) | Adjusting and lighting device for discharge lamp | |
JPS5667158A (en) | Illuminator | |
JPS52118974A (en) | Adjusting and lighting device for discharge lamp | |
JPS5657251A (en) | Electric-discharge lamp |