JPS54117174A - Discharge lamp lighting device - Google Patents
Discharge lamp lighting deviceInfo
- Publication number
- JPS54117174A JPS54117174A JP2472878A JP2472878A JPS54117174A JP S54117174 A JPS54117174 A JP S54117174A JP 2472878 A JP2472878 A JP 2472878A JP 2472878 A JP2472878 A JP 2472878A JP S54117174 A JPS54117174 A JP S54117174A
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- lamp
- accumulated
- energy
- voltage
- 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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
PURPOSE: To provide the subject device wherein energy accumulated in the inductance element in each cycle of a power source is applied to an discharge lamp by overlapping te same on a commercial source, thereby directly lighting the lamp by the power source of low voltage.
CONSTITUTION: When a sine voltage is applied from a commercial source 1 to the discharge lamp, a rectifying voltage is generated at the output end of a diode bridge D5 through the output end of the rectifying bridge 4 and a transformer T, and applied to a switch 3, and turns the same "ON". Upon this occasion, the circuit L1 - F1 - 4 - 3 - F2 is closed, and energy is accumulated in an inductance L1, when the phase advances, a thyristor S becomes conductive after the lapse of predetermined hours by the relationship between R1 through R3, the switch 3 is turned off. As a result, the discharge lamp is lighted by a high voltage generated at both ends thereof by accumulated energy at the rectifying bridge 4. According to the device, since a preheating current flows through filaments F1 and F2 before the lighting of the lamp, the lamp is precisely lighted and damage of the electrode can be prevented.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2472878A JPS6024559B2 (en) | 1978-03-03 | 1978-03-03 | discharge lamp lighting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2472878A JPS6024559B2 (en) | 1978-03-03 | 1978-03-03 | discharge lamp lighting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54117174A true JPS54117174A (en) | 1979-09-11 |
JPS6024559B2 JPS6024559B2 (en) | 1985-06-13 |
Family
ID=12146205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2472878A Expired JPS6024559B2 (en) | 1978-03-03 | 1978-03-03 | discharge lamp lighting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6024559B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59146196A (en) * | 1984-01-20 | 1984-08-21 | 日立照明株式会社 | Device for firing discharge lamp |
-
1978
- 1978-03-03 JP JP2472878A patent/JPS6024559B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59146196A (en) * | 1984-01-20 | 1984-08-21 | 日立照明株式会社 | Device for firing discharge lamp |
Also Published As
Publication number | Publication date |
---|---|
JPS6024559B2 (en) | 1985-06-13 |
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