TW200740299A - Driving circuit for discharge tube and its control method - Google Patents
Driving circuit for discharge tube and its control methodInfo
- Publication number
- TW200740299A TW200740299A TW096102667A TW96102667A TW200740299A TW 200740299 A TW200740299 A TW 200740299A TW 096102667 A TW096102667 A TW 096102667A TW 96102667 A TW96102667 A TW 96102667A TW 200740299 A TW200740299 A TW 200740299A
- Authority
- TW
- Taiwan
- Prior art keywords
- discharge tube
- driving
- driving circuit
- control method
- resonance current
- Prior art date
Links
Abstract
To provide a discharge tube driving circuit capable of automatically adjusting to a driving frequency generating power-factor improving effect, and its control method. The discharge tube driving circuit includes a step-up transformer (1) having a tank circuit to generate a resonance current resonating with a parasitic capacitance of a discharge tube (4), and the control method of the discharge tube driving circuit for driving at least the driving tube comprises a step of detecting a phase of the resonance current and generates a detection signal corresponding to the phase of this resonance current, and a step of adjusting the detection signal and a calculation value corresponding to the frequency of the drive signal for driving a primary winding (11) of the step-up transformer (1). Further, it comprises a step of synthesizing waveform of the drive signal by adding and subtracting a counter value to the calculation value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW096102667A TW200740299A (en) | 2006-01-26 | 2007-01-24 | Driving circuit for discharge tube and its control method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW95103093 | 2006-01-26 | ||
TW096102667A TW200740299A (en) | 2006-01-26 | 2007-01-24 | Driving circuit for discharge tube and its control method |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200740299A true TW200740299A (en) | 2007-10-16 |
TWI348332B TWI348332B (en) | 2011-09-01 |
Family
ID=38455231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW096102667A TW200740299A (en) | 2006-01-26 | 2007-01-24 | Driving circuit for discharge tube and its control method |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2007200891A (en) |
TW (1) | TW200740299A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI457036B (en) * | 2010-06-04 | 2014-10-11 | Opulent Electronics Internat Pte Ltd | Device and method for driving leds |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8072163B2 (en) * | 2009-10-21 | 2011-12-06 | General Electric Company | Knowledge-based driver apparatus for high lumen maintenance and end-of-life adaptation |
-
2007
- 2007-01-24 TW TW096102667A patent/TW200740299A/en not_active IP Right Cessation
- 2007-01-25 JP JP2007014683A patent/JP2007200891A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI457036B (en) * | 2010-06-04 | 2014-10-11 | Opulent Electronics Internat Pte Ltd | Device and method for driving leds |
Also Published As
Publication number | Publication date |
---|---|
TWI348332B (en) | 2011-09-01 |
JP2007200891A (en) | 2007-08-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |