JPS6410599A - Stabilizer for discharge lamp - Google Patents
Stabilizer for discharge lampInfo
- Publication number
- JPS6410599A JPS6410599A JP16231487A JP16231487A JPS6410599A JP S6410599 A JPS6410599 A JP S6410599A JP 16231487 A JP16231487 A JP 16231487A JP 16231487 A JP16231487 A JP 16231487A JP S6410599 A JPS6410599 A JP S6410599A
- Authority
- JP
- Japan
- Prior art keywords
- frequency number
- control
- timing
- circuit
- becomes
- 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
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
PURPOSE:To simplify a circuit by composing a stabilizing circuit of a serial resonance circuit in such a structure that semiconductor switch control frequency numbers of the circuit are switched between two modes so as to perform preheating of a fluorescent lamp at the time of a high frequency number and lighting at the time of a low frequency number. CONSTITUTION:If a DC source voltage (a) and a control input signal (b) of 'H' are inputted to a DC source E and a control signal terminal 16 respectively, a semiconductor switch 24 becomes 'on' by the signal (b), and a timing resistance 23 gets o be in parallel with a timing resistance 22. A generation frequency F0 for control output is set based on a combined resistance value of these and a timing capacity 21. Next if the signal (b) becomes 'L', then the switch 24 becomes 'off', and a generation frequency number f1 for control output is set based on the resistance 22 and the timing capacity 21. For preheating, the semiconductor control switch is activated at the operating frequency number of f0, and preheating current goes through a current rectifier 13 and the filament of a fluorescent lamp 1 to a starting capacitor 14 to preheat the filament. If the operation frequency number is changed into F1, and if it gets close to a resonance frequency number, high voltages at both ends of the starting capacitor 14 gets a lamp 1 on.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16231487A JPS6410599A (en) | 1987-07-01 | 1987-07-01 | Stabilizer for discharge lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16231487A JPS6410599A (en) | 1987-07-01 | 1987-07-01 | Stabilizer for discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6410599A true JPS6410599A (en) | 1989-01-13 |
Family
ID=15752166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16231487A Pending JPS6410599A (en) | 1987-07-01 | 1987-07-01 | Stabilizer for discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6410599A (en) |
-
1987
- 1987-07-01 JP JP16231487A patent/JPS6410599A/en active Pending
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