JPS6482493A - Lighting device for discharge lamp - Google Patents
Lighting device for discharge lampInfo
- Publication number
- JPS6482493A JPS6482493A JP24034387A JP24034387A JPS6482493A JP S6482493 A JPS6482493 A JP S6482493A JP 24034387 A JP24034387 A JP 24034387A JP 24034387 A JP24034387 A JP 24034387A JP S6482493 A JPS6482493 A JP S6482493A
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- turn
- output
- duty
- inverter
- 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.)
- Granted
Links
Abstract
PURPOSE:To turn on or off and dim a discharge lamp by changing the output of an inverter in response to the duty of the PWM signal to dim or turn on the discharge lamp and stopping the switching signal output of a driving device to turn off the discharge lamp when the PWM signal is a continuous signal. CONSTITUTION:The switching frequency of switching devices 2 and 3 of an inverter 1 is changed in response to the duty of the PWM signal to change the output of the inverter 1 and dim and turn on a discharge lamp 7. When the PWM signal is continuous, i.e., the on duty is nearly 100%, the switching signal output of a driving device 8 is stopped to stop the output of the switching signal, and the inverter 1 is made inoperative to turn off the discharge lamp 7. The discharge lamp can be thereby turned on or off and dimmed by changing the duty of the PWM signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62240343A JP2803080B2 (en) | 1987-09-25 | 1987-09-25 | Discharge lamp lighting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62240343A JP2803080B2 (en) | 1987-09-25 | 1987-09-25 | Discharge lamp lighting device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29730696A Division JP3029015B2 (en) | 1996-10-19 | 1996-10-19 | Discharge lamp lighting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6482493A true JPS6482493A (en) | 1989-03-28 |
JP2803080B2 JP2803080B2 (en) | 1998-09-24 |
Family
ID=17058073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62240343A Expired - Lifetime JP2803080B2 (en) | 1987-09-25 | 1987-09-25 | Discharge lamp lighting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2803080B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03156895A (en) * | 1989-10-12 | 1991-07-04 | Honeywell Inc | Fluorescent lamp dimmer |
KR100320235B1 (en) * | 1999-09-28 | 2002-01-10 | 이원종 | Method for Softstop control in electronic stabilizer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5683801U (en) * | 1979-11-29 | 1981-07-06 | ||
JPS6139497A (en) * | 1984-07-31 | 1986-02-25 | 東芝ライテック株式会社 | Discharge lamp dimming system |
-
1987
- 1987-09-25 JP JP62240343A patent/JP2803080B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5683801U (en) * | 1979-11-29 | 1981-07-06 | ||
JPS6139497A (en) * | 1984-07-31 | 1986-02-25 | 東芝ライテック株式会社 | Discharge lamp dimming system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03156895A (en) * | 1989-10-12 | 1991-07-04 | Honeywell Inc | Fluorescent lamp dimmer |
KR100320235B1 (en) * | 1999-09-28 | 2002-01-10 | 이원종 | Method for Softstop control in electronic stabilizer |
Also Published As
Publication number | Publication date |
---|---|
JP2803080B2 (en) | 1998-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080717 Year of fee payment: 10 |