TW200718285A - A control circuit and a controller for a light-emitting unit - Google Patents
A control circuit and a controller for a light-emitting unitInfo
- Publication number
- TW200718285A TW200718285A TW094136421A TW94136421A TW200718285A TW 200718285 A TW200718285 A TW 200718285A TW 094136421 A TW094136421 A TW 094136421A TW 94136421 A TW94136421 A TW 94136421A TW 200718285 A TW200718285 A TW 200718285A
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- emitting unit
- unit
- current
- controller
- Prior art date
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A control circuit and a controller for a light-emitting unit are proposed. The control circuit includes an energy-storing unit connected in series with the light-emitting unit; a discharging unit connected in parallel with the energy-storing unit and the light-emitting unit; a switch connected in series with the energy-storing unit and the light-emitting unit; and a current-sense unit connected in series with the switch. The current-sense unit generates a current-sense signal in response to the operation current of the light-emitting unit. In response to the current-sense signal, the controller is connected to the current-sense unit and the switch to generate a control signal for controlling the switch. Therefore, the brightness of the light-emitting unit can be properly regulated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94136421A TWI308034B (en) | 2005-10-18 | 2005-10-18 | A control circuit and a controller for a light-emitting unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94136421A TWI308034B (en) | 2005-10-18 | 2005-10-18 | A control circuit and a controller for a light-emitting unit |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200718285A true TW200718285A (en) | 2007-05-01 |
TWI308034B TWI308034B (en) | 2009-03-21 |
Family
ID=45071738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94136421A TWI308034B (en) | 2005-10-18 | 2005-10-18 | A control circuit and a controller for a light-emitting unit |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI308034B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI394485B (en) * | 2008-06-18 | 2013-04-21 | Ite Tech Inc | Light-emitting device driving circuit and method thereof |
TWI398187B (en) * | 2009-06-30 | 2013-06-01 | Hon Hai Prec Ind Co Ltd | Controlling circuit for led |
-
2005
- 2005-10-18 TW TW94136421A patent/TWI308034B/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI394485B (en) * | 2008-06-18 | 2013-04-21 | Ite Tech Inc | Light-emitting device driving circuit and method thereof |
TWI398187B (en) * | 2009-06-30 | 2013-06-01 | Hon Hai Prec Ind Co Ltd | Controlling circuit for led |
Also Published As
Publication number | Publication date |
---|---|
TWI308034B (en) | 2009-03-21 |
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