TW200719763A - Power indicator driving circuit - Google Patents
Power indicator driving circuitInfo
- Publication number
- TW200719763A TW200719763A TW094138811A TW94138811A TW200719763A TW 200719763 A TW200719763 A TW 200719763A TW 094138811 A TW094138811 A TW 094138811A TW 94138811 A TW94138811 A TW 94138811A TW 200719763 A TW200719763 A TW 200719763A
- Authority
- TW
- Taiwan
- Prior art keywords
- transistor
- branch circuit
- led
- signal
- load resistor
- Prior art date
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A power indicator driving circuit includes an LED (light-emitting diode), a first load resistor, a second load resistor, a first branch circuit, and a second branch circuit. The LED (light-emitting diode) indicates a power management state of a computer. The first load resistor is connected between a cathode of the LED and a power source. The second load resistor is connected between an anode of the LED and the power source. The first branch circuit is controlled by a first signal and a second signal. The first branch circuit is connected between the cathode of the LED and a ground. The first branch circuit includes a first transistor and a second transistor. The first transistor is connected to the second transistor in series. The second branch circuit is controlled by the second signal and a third signal. The second branch circuit is connected between the anode of the LED and the ground. The second branch circuit includes a third transistor and a forth transistor. The third transistor is connected to the forth transistor in series.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94138811A TWI324497B (en) | 2005-11-04 | 2005-11-04 | Power indicator driving circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94138811A TWI324497B (en) | 2005-11-04 | 2005-11-04 | Power indicator driving circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200719763A true TW200719763A (en) | 2007-05-16 |
TWI324497B TWI324497B (en) | 2010-05-01 |
Family
ID=45074175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94138811A TWI324497B (en) | 2005-11-04 | 2005-11-04 | Power indicator driving circuit |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI324497B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI680692B (en) * | 2018-09-21 | 2019-12-21 | 魔力歐生技有限公司 | Switch control device with an asymmetrical current |
-
2005
- 2005-11-04 TW TW94138811A patent/TWI324497B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI680692B (en) * | 2018-09-21 | 2019-12-21 | 魔力歐生技有限公司 | Switch control device with an asymmetrical current |
Also Published As
Publication number | Publication date |
---|---|
TWI324497B (en) | 2010-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN201188301Y (en) | LED display module capable of extending arbitrarily | |
ATE515177T1 (en) | LED CIRCUIT, ARRANGEMENT AND DEVICE | |
TW200636657A (en) | Driving circuit for current programmed organic light-emitting diode displays | |
EP1636857A4 (en) | Bypass diode for photovoltaic cells | |
TW200731183A (en) | Semiconductor device, and display device and electronic equipment each having the same | |
CL2010000706U1 (en) | Luminescent device based on a luminescent diode (LED), which includes a base with a stop, a LED module mounted in the base connection section, and at least one control circuit coupled within the base and to an electrical connection with the led module | |
TW200702824A (en) | LED assembly and module | |
TR201903696T4 (en) | Intelligent LED traffic signal detecting light efficiency loss. | |
TW200802873A (en) | Thermally stable semiconductor power device | |
WO2013089659A3 (en) | Solid state lighting devices providing visible alert signals in general illumination applications and related methods of operation | |
TW200712644A (en) | Back-light module | |
TW200729136A (en) | Illumination device | |
AU2010262280A1 (en) | Dimmer luminaire | |
WO2009078166A1 (en) | Active matrix type display device | |
TW200719763A (en) | Power indicator driving circuit | |
MX2008008416A (en) | Interconnected arrangement of individual modules having at least one light-emitting diode chip. | |
US20120139526A1 (en) | Voltage detection circuit | |
TW200723560A (en) | Light-emitting semiconductor device with open-bypass function | |
TW200725078A (en) | Backlight module and driving circuit module thereof | |
TW200705052A (en) | Illuminating device and liquid crystal display | |
CN203413439U (en) | LED (light emitting diode) lamp strip | |
CN201803169U (en) | Light-emitting diode (LED) illuminator | |
CN203523102U (en) | Convenient and practical LED lamp | |
CN103152924A (en) | Light-emitting diode (LED) energy-saving circuit | |
TW200944051A (en) | Light-emitting diode light source module and application thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |