CN102291873B - Indicating lamp control circuit of television - Google Patents
Indicating lamp control circuit of television Download PDFInfo
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- CN102291873B CN102291873B CN201110103682.5A CN201110103682A CN102291873B CN 102291873 B CN102291873 B CN 102291873B CN 201110103682 A CN201110103682 A CN 201110103682A CN 102291873 B CN102291873 B CN 102291873B
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Abstract
The invention discloses a kind of indicating lamp control circuit of television, the technical problem that solve is to meet multi-functional demonstration and reduce television set complete machine cost. Power supply of the present invention is connected to indicating lamp control circuit, and described indicating lamp control circuit is divided into three tunnels, and the first resistance of the first via connects respectively the positive pole of the first light emitting diode and the colelctor electrode of triode; The 3rd resistance on the second tunnel connects the positive pole of the first diode; The 4th resistance of Third Road connects the positive pole of the second diode; The negative pole of described the first diode and the second diode connects respectively the positive pole of the second light emitting diode, connects the base stage of triode, the grounded emitter of described triode through the second resistance; The negative pole of described the first light emitting diode and the second light emitting diode is through the 5th resistance eutral grounding. The present invention compared with prior art, is switched by three kinds of states of indicating lamp control circuit control television indicator light, and circuit is realized simple and reliable, has also saved material when having saved system resource, has reduced television set complete machine cost.
Description
Technical field
The present invention relates to the control circuit of a kind of control circuit of television set, particularly a kind of television indicator light.
Background technology
At present the LED light of television set generally adopts bi-colour LED design, in order to instruction start (green),Standby (redness) two states; But along with the increase of functions of television set, only indicate two states notCan meet the demand that functions of television set or state are indicated, as: certain state after start needs green lightFlicker. For realizing this indicator lamp display mode, prior art adopts two control lines to control respectively twoThe on and off of dual-colored LED lamp, so just need two control lines of two I/O, the television set not only taking systemSystem resource, and complete machine has increased cost.
Summary of the invention
The object of this invention is to provide a kind of indicating lamp control circuit of television, the technical problem that solve is fullThe multi-functional demonstration of foot also reduces television set complete machine cost.
The present invention is by the following technical solutions: a kind of indicating lamp control circuit of television, comprises power supply and instructionLamp control circuit, described power supply is connected to indicating lamp control circuit, and described indicating lamp control circuit is divided into three tunnels,The first resistance of the first via connects respectively the positive pole of the first light emitting diode and the colelctor electrode of triode; The second tunnelThe 3rd resistance connect the positive pole of the first diode; The 4th resistance of Third Road connects the positive pole of the second diode; InstituteThe negative pole of stating the first diode and the second diode connects respectively the positive pole of the second light emitting diode, through the second resistanceConnect the base stage of triode, the grounded emitter of described triode; Described the first light emitting diode and second luminousThe negative pole of diode is through the 5th resistance eutral grounding.
Power supply of the present invention is: start, standby all keep power supply A line power supply, standby does not have, starts shootingSome B line power supplys, are subject to the C line power supply of television set microprocessor control.
A line of the present invention, B line and C line are 3.3V-12V, and the resistance value of the first resistance is 1K-10K EuropeNurse, the resistance value of the second resistance is 470-4.7K ohm, the resistance value of the 3rd resistance is 4.7K-100K ohm,The resistance value of the 4th resistance is 470-4.7K ohm, and the resistance value of the 5th resistance is 0-1K ohm.
A line of the present invention, B line and C line are 5V, and the resistance value of the first resistance is 2K ohm, the second electricityThe resistance value of resistance is 1K ohm, and the resistance value of the 3rd resistance is 10K ohm, and the resistance value of the 4th resistance is1K ohm, the resistance value of the 5th resistance is 0 ohm, triode adopts 2SC1815, the first diode and theTwo diodes adopt 1N4148, and the first light emitting diode and the second light emitting diode are multiple tubeHFT505M-RG。
The present invention compared with prior art, by three kinds of shapes of indicating lamp control circuit control television indicator lightState is switched, and circuit is realized simple and reliable, has also saved material when having saved system resource, has reduced electricityDepending on machine complete machine cost.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, indicating lamp control circuit of television of the present invention, by power supply and indicating lamp control circuitComposition, power supply is divided into: the A line power supply that start, standby often have, the B line electricity that standby does not have, starts shooting and often haveSource, is subject to the C line power supply of television set microprocessor control. Described indicating lamp control circuit Wei San road, the first viaThe first resistance R 1 connect respectively the positive pole of the first light emitting diode R and the colelctor electrode of triode V1; SecondThe 3rd resistance R 3 on road connects the positive pole of the first diode VD1; The 4th resistance R 4 of Third Road connects the two or two utmost pointThe positive pole of pipe VD2; The negative pole of described the first diode VD1 and the second diode VD2 connects respectively secondThe positive pole of optical diode G, connect the base stage of triode V1 through the second resistance R 2, described triode V1 sends outEmitter grounding; The negative pole of described the first light emitting diode R and the second light emitting diode G is through the 5th resistance R 5Ground connection.
Light emitting diode of the present invention is red, the green dichromatic LED of common cathode, the first diode VD1With the second diode VD2 be general-purpose diode, triode V1 is common triode, the first resistance R 1,Two resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4 are current-limiting resistances.
The first resistance R 1 of the present invention is for regulating the electric current of the first red light emitting diode R, the second resistanceR2 is triode V1 base stage current limliting, and the 3rd resistance R 3, the 4th resistance R 4 are for regulating green secondThe anode voltage of optical diode G and electric current.
The first resistance R 1 of the present invention connects A line, all keeps the standby power of power supply during for start, standby, theThree resistance R 3 connect B line, have the power supply of power supply for starting shooting, and the 4th resistance R 4 connects C line, for being subject to television setThe power supply of microprocessor control.
When TV standby, only have A line Power supply, the first light emitting diode R sends out a warning; After start, BLine Power supply, in the time that the power supply of C line is not powered, selects suitable the first resistance R 2, the second resistance R 3 to hinderValue, the anode voltage that can make the second green light emitting diode G lower than this light emitting diode conducting voltage andHigher than triode V1 saturation conduction voltage, now the first red light emitting diode, green second luminous twoUtmost point pipe is not luminous; In the time that C line is powered, select the 4th suitable resistance R 4 resistances, can make green theThe anode voltage of two light emitting diode G is higher than this light emitting diode conducting voltage, and now second of green is luminousDiode G is luminous.
The resistance value of the first resistance R 1 is generally 1K-10K ohm, and the resistance value of the second resistance R 2 is generally470-4.7K ohm, the resistance value of the 3rd resistance R 3 is generally 4.7K-100K ohm, the 4th resistance R 4Resistance value is generally 470-4.7K ohm, and the resistance value of the 5th resistance R 5 is generally 0-1K ohm, A lineDuring for start, standby, all keep the standby power of power supply to be generally 3.3V-12V, B line has power supply for starting shootingPower supply be generally 3.3V-12V, C line be subject to television set microprocessor MSD6E48 control power supply generalFor 3.3V-12V.
The resistance value of embodiment 1, the first resistance R 1 is 2K ohm, and the resistance value of the second resistance R 2 is 1KOhm, the resistance value of the 3rd resistance R 3 is 10K ohm, the resistance value of the 4th resistance R 4 is 1K ohm,The resistance value of the 5th resistance R 5 is 0 ohm, and triode V1 adopts 2SC1815, the first diode VD1Adopt 1N4148 with the second diode VD2, the first light emitting diode R and the second light emitting diode G adoptMultiple tube HFT505M-RG, A line all keeps the standby 5V power supply of power supply, B line while being start, standbyHave the 5V power supply of power supply for starting shooting, C line is the 5V electricity that controlled by television set microprocessor MSD6E48Source.
The break-make of an I/O controller control C line power supply for the processor of television set of the present invention, canWhen red, green light or green light flicker while realizing start; Three kinds of states having realized television indicator light switch,Circuit is realized simple and reliable, has saved system resource; Also can be by the 3rd resistance R 3, the 4th resistance R 4,One diode VD1, the second diode VD2 are put on the mainboard of television set, and miscellaneous part is put into LED UnitUpper, so also can save a core connecting line, save material cost.
Claims (1)
1. an indicating lamp control circuit of television, comprise power supply and indicating lamp control circuit, described power supply is connected to indicating lamp control circuit, it is characterized in that: described indicating lamp control circuit is divided into three tunnels, one end of first resistance (R1) of the first via connects respectively the positive pole of the first light emitting diode (R) and the colelctor electrode of triode (V1); The positive pole of one termination the first diode (VD1) of the 3rd resistance (R3) on the second tunnel; The positive pole of one termination the second diode (VD2) of the 4th resistance (R4) of Third Road; The negative pole of described the first diode (VD1) and the second diode (VD2) connects respectively the positive pole of the second light emitting diode (G), connects the base stage of triode (V1), the grounded emitter of described triode (V1) through the second resistance (R2); The negative pole of described the first light emitting diode (R) and the second light emitting diode (G) is through the 5th resistance (R5) ground connection;
Described power supply is: start, standby all keep the A line power supply of power supply, standby do not power, start shooting power supply B line power supply, be subject to the C line power supply of television set microprocessor control, A line, B line, C line power supply connect respectively the other end of the 4th resistance (R4) of the 3rd resistance (R3), the Third Road on the first resistance (R1), second tunnel of the first via;
Described A line, B line and C line are 3.3V-12V, the resistance value of the first resistance (R1) is 1K-10K ohm, the resistance value of the second resistance (R2) is 470-4.7K ohm, the resistance value of the 3rd resistance (R3) is 4.7K-100K ohm, the resistance value of the 4th resistance (R4) is 470-4.7K ohm, and the resistance value of the 5th resistance (R5) is 0-1K ohm;
Triode (V1) adopts 2SC1815, the first diode (VD1) and the second diode (VD2) adopt 1N4148, and the first light emitting diode (R) and the second light emitting diode (G) are multiple tube HFT505M-RG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110103682.5A CN102291873B (en) | 2011-04-25 | 2011-04-25 | Indicating lamp control circuit of television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110103682.5A CN102291873B (en) | 2011-04-25 | 2011-04-25 | Indicating lamp control circuit of television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102291873A CN102291873A (en) | 2011-12-21 |
| CN102291873B true CN102291873B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110103682.5A Expired - Fee Related CN102291873B (en) | 2011-04-25 | 2011-04-25 | Indicating lamp control circuit of television |
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| Country | Link |
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| CN (1) | CN102291873B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3231257A4 (en) * | 2014-12-10 | 2018-08-22 | Thomson Licensing | Indicator circuit and apparatus using the same |
| CN108377424A (en) * | 2018-02-10 | 2018-08-07 | 深圳创维－Rgb电子有限公司 | Television backlight operated control method, device and computer readable storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582294Y (en) * | 2002-10-22 | 2003-10-22 | 海尔集团公司 | TV set having light for indicating conditions |
| CN201781660U (en) * | 2010-07-07 | 2011-03-30 | 深圳Tcl新技术有限公司 | Television indicator light driver circuit |
-
2011
- 2011-04-25 CN CN201110103682.5A patent/CN102291873B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582294Y (en) * | 2002-10-22 | 2003-10-22 | 海尔集团公司 | TV set having light for indicating conditions |
| CN201781660U (en) * | 2010-07-07 | 2011-03-30 | 深圳Tcl新技术有限公司 | Television indicator light driver circuit |
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| Publication number | Publication date |
|---|---|
| CN102291873A (en) | 2011-12-21 |
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Effective date of registration: 20191211 Address after: 239000 No. 999, Central Avenue, Chuzhou, Anhui Co-patentee after: Shenzhen Xiaojia Technology Co.,Ltd. Patentee after: ANHUI KONKA ELECTRONICS Co.,Ltd. Co-patentee after: KONKA GROUP Co.,Ltd. Address before: 528000 15-24 / F, Kangjia R & D building, No. 28, Keji South 12th Road, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Co-patentee before: ANHUI KONKA ELECTRONICS Co.,Ltd. Patentee before: KONKA GROUP Co.,Ltd. Co-patentee before: Shenzhen Xiaojia Technology Co.,Ltd. Effective date of registration: 20191211 Address after: 528000 15-24 / F, Kangjia R & D building, No. 28, Keji South 12th Road, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Co-patentee after: ANHUI KONKA ELECTRONICS Co.,Ltd. Patentee after: KONKA GROUP Co.,Ltd. Co-patentee after: Shenzhen Xiaojia Technology Co.,Ltd. Address before: 518053 overseas Chinese town, Shenzhen, Guangdong, Nanshan District Patentee before: KONKA GROUP Co.,Ltd. |
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Granted publication date: 20160504 Termination date: 20210425 |
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| CF01 | Termination of patent right due to non-payment of annual fee |