CN201018698Y - Indication lamp control circuit - Google Patents
Indication lamp control circuit Download PDFInfo
- Publication number
- CN201018698Y CN201018698Y CNU2007200189837U CN200720018983U CN201018698Y CN 201018698 Y CN201018698 Y CN 201018698Y CN U2007200189837 U CNU2007200189837 U CN U2007200189837U CN 200720018983 U CN200720018983 U CN 200720018983U CN 201018698 Y CN201018698 Y CN 201018698Y
- Authority
- CN
- China
- Prior art keywords
- indicator light
- circuit
- master chip
- connects
- switching circuit
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model discloses an indicating lamp control circuit which comprises a video display device main chip and an indicating lamp current supply circuit. Wherein, the main chip comprises a display control foot which outputs homologized high/low electrical level signal. The electrical level signal is outputted based on the image display. The display control foot of the main chip is connected with a control end of the on off circuit. The culling-on switch of the on off circuit is tandem compounded in the indicating lamp current supply circuit or parallel connected with the positive and the negative electrodes of the indicating lamp. Through detecting the work or oscillation failure of the work circuit of the video display device, the indicating lamp control circuit of the utility model determines the high and low of the signal outputted by the main chip. The on and off of the indicating lamp is controlled. Two display requirements are effectively achieved after the connection of the power light to the alternating current power supply. The usage requirements of the users from different countries and districts can be fulfilled.
Description
Technical field
The utility model relates to a kind of indicator light circuit, specifically, relates to a kind of whether output image is controlled indicator light opens the circuit structure that goes out according to video display apparatus.
Background technology
At present, common television set generally all is to press mains switch to connect alternating current, and power supply indicator is bright.No matter television set has or not image, start or standby, indicator light is all lighted always.But, in different countries and regions different requirements is arranged in addition: have require mains switch to connect alternating current and television set not have image the time indicator light do not work, treat that television set display image rear indicator light is bright; After alternating current was connected in the requirement that also has, indicator light was bright during the television set standby, and television boot-strap display image rear indicator light extinguishes.Therefore, how designing a kind of indicator light control circuit, to satisfy above-mentioned requirements be problem to be solved in the utility model.
The utility model content
Goal of the invention of the present utility model is to provide a kind of novel indicator light control circuit, goes out by opening of control indicator light and realizes whether video display apparatus is had effective indication of image output.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
The utility model is in order to satisfy video display apparatus after connecting AC power, and two kinds of display requirements of power supply indicator have proposed two kinds of indicator light controlling schemes.
First kind of controlling schemes is intended to satisfy mains switch when connecting alternating current and video display apparatus and not having image, and indicator light does not work, and the designing requirement that the image to be displayed rear indicator light is lighted comprises video display apparatus master chip and indicator light current supply circuit; Wherein, in described master chip, include according to image and whether show the demonstration control pin of exporting corresponding high/low level signal, the demonstration control pin of described master chip connects the control end of a switching circuit, and the gating switch of described switching circuit is connected in the described indicator light current supply circuit.
Specifically, described switching circuit adopts a NPN type triode to realize, the base stage of described triode connects the demonstration control pin of master chip, and emitter and collector is connected in the described indicator light current supply circuit.
Wherein, the grounded emitter of described NPN type triode, collector electrode connects the negative pole of indicator light, and the positive pole of indicator light connects power supply by divider resistance.
Second kind of controlling schemes is intended to satisfy video display apparatus indicator light when connecting alternating current and being in holding state to be lighted, and the designing requirement that start display image rear indicator light extinguishes comprises video display apparatus master chip and indicator light current supply circuit; Wherein, in described master chip, include according to image and whether show the demonstration control pin of exporting corresponding high/low level signal, the demonstration control pin of described master chip connects the control end of a switching circuit, and the two ends of the gating switch of described switching circuit and the positive and negative polarities of described indicator light are in parallel.
Specifically, described switching circuit adopts a NPN type triode to realize, the base stage of described triode connects the demonstration control pin of master chip, and emitter connects the negative pole of indicator light, and collector electrode connects the positive pole of indicator light.The positive pole of described indicator light connects power supply by divider resistance, minus earth.
In the utility model, described master chip receives the operating state detection signal from row circuit in the video display apparatus, whether determines the height that it shows the control pin output level according to the row circuit working, and then realizes the control to the indicator light light on and off.
Described indicator light can adopt the LED light-emitting diode to realize.
Described switching circuit can also adopt switch elements such as relay or field effect transistor to realize.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by detecting the work or the failure of oscillation state of row circuit in the video display apparatus, determine the height of its microprocessor output signal, and then control lighting of indicator light or extinguish with this, efficiently solve the two kind display requirements of power supply indicator after connecting AC power, satisfied country variant and regional user's user demand.Indicator light control circuit of the present utility model is simple in structure, makes full use of original microprocessor in the video display apparatus and cooperates simple switching circuit can realize effective control to indicator light, and design cost is cheap, and applicability is strong.
Description of drawings
Fig. 1 is first kind of embodiment of indication lamp control circuit in the utility model;
Fig. 2 is second kind of embodiment of indication lamp control circuit in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
The utility model is for after solving video display apparatus connection AC power, two kinds of display requirements of indicator light, two kinds of novel indicator light control circuits have as depicted in figs. 1 and 2 been proposed, the high-low level signal of exporting respectively when utilizing the master chip of display device or microprocessor to be expert at circuit working or failure of oscillation is controlled lighting of indicator light or is extinguished, thereby has satisfied country variant or regional user's user demand by simple circuit configuration.
Embodiment one, and as shown in Figure 1, NA1 is the video display apparatus master chip, and+5V DC power supply VCC_+5V provide operating voltage for it.Described master chip NA1 receives the operating state detection signal of circuit voluntarily, is in running order or the failure of oscillation state is determined the height state of its demonstration control pin 31 output levels according to the row circuit.The demonstration control pin 31 of described master chip NA1 connects the control end of a switching circuit, and the gating switch of switching circuit is connected in the current supply circuit of indicator light, and conducting by the control switch circuit or cut-off state realize the effective control to the indicator light light on and off.
In the utility model, the device that described switching circuit can adopt triode, relay or metal-oxide-semiconductor etc. to have on-off action realizes that Fig. 1 has exemplified and adopted the circuit structure of NPN type triode as switch element.Wherein, behind the electrostatic discharge protective circuit that the demonstration control pin 31 of master chip NA1 passes through to be made up of resistance R A5 and capacitor C A5; connect the base stage of described NPN type triode VA1 through divider resistance RA4, the collector and emitter of described triode VA1 is connected in the current supply circuit of indicator light.Indicator light of the present utility model can adopt the light-emitting diode VDA1 of present commonplace use to realize, specifically, the anode of described light-emitting diode VDA1 is by divider resistance RA1 connection+5V DC power supply VCC_+5V, negative electrode connects the collector electrode of described NPN type triode VA1, the grounded emitter of triode VA1.
Its circuit working principle is: when video display apparatus start output image, it is in running order that master chip NA1 detects capable circuit, then shows control pin 31 output+3V high level signals by it, control triode VA1 conducting, be communicated with the indicator light current supply circuit, light-emitting diode VDA1 lights.When the row circuit quits work, no image output, master chip NA1 shows control pin 31 output low level signals by it, control triode VA1 ends, and then cuts off the current supply circuit of indicator light, and light-emitting diode VDA1 is extinguished.Indicator light does not work when having realized thus that mains switch is connected alternating current and video display apparatus and do not had image, and part countries and regions user's user demand has been satisfied in the designing requirement that the image to be displayed rear indicator light is lighted.
Circuit connection structure and Fig. 1 that described switching circuit adopts metal-oxide-semiconductor to realize are similar, and its grid connects the demonstration control pin 31 of master chip NA1, and source electrode and drain electrode are connected in the described indicator light current supply circuit.And when adopting relay to constitute switching circuit, the demonstration control pin 31 control relay coils of master chip NA1 electric and dead electricity, normal open switch is connected in the described indicator light current supply circuit.Because the foregoing circuit structure is easy to associate for a person skilled in the art, therefore, the utility model has specifically disclosed it with regard to no longer additionally increasing accompanying drawing.
Embodiment two, and as shown in Figure 2, NB1 is the video display apparatus master chip, and+5V DC power supply VCC_+5V provide operating voltage for it.The demonstration control pin 31 of described master chip NB1 connects the control end of a switching circuit, the two ends of the gating switch of switching circuit and the positive and negative polarities of indicator light are in parallel, and conducting by the control switch circuit or cut-off state realize the effective control to the indicator light light on and off.
Equally, the device that described switching circuit can also adopt triode, relay or metal-oxide-semiconductor etc. to have on-off action realizes that Fig. 2 has exemplified and adopted the circuit structure of NPN type triode as switch element.Wherein, behind the electrostatic discharge protective circuit that the demonstration control pin 31 of master chip NB1 passes through to be made up of resistance R B5 and capacitor C B3; connect the base stage of described NPN type triode VB1 through divider resistance RB4, the collector and emitter of described triode VB1 is connected in parallel on the positive and negative polarities of indicator light.Indicator light of the present utility model can adopt the light-emitting diode VDB1 of present commonplace use to realize, specifically, the anode of described light-emitting diode VDB1 connects the collector electrode of triode VB1, and by divider resistance RB1 connection+5V DC power supply VCC_+5V, negative electrode connects the emitter of described NPN type triode VB1, ground connection on the other hand on the one hand.
Its circuit working principle is: when video display apparatus start output image, it is in running order that master chip NB1 detects capable circuit, then shows control pin 31 output+3V high level signals by it, control triode VB1 conducting.Because it is luminous during greater than 2V that the characteristic of light-emitting diode VDB1 is a both positive and negative polarity pressure reduction, extinguish when being lower than 2V, and during NPN type triode VB1 conducting, the voltage between its collector electrode and the emitter is lower than 0.5V, therefore, the light-emitting diode VDB1 of this moment does not work.When the row circuit quits work, when video display apparatus does not have image output, master chip NB1 shows control pin 31 output low level signals by it, control triode VB1 ends, at this moment, triode VB1 is inoperative for light-emitting diode VDB1, and the indicator light current supply circuit normally is communicated with, DC power supply VCC_+5V makes light-emitting diode VDB1 conducting luminous for light-emitting diode VDB1 provides operating voltage.Realized that thus video display apparatus indicator light when connecting alternating current and being in holding state lights, other a part of countries and regions user's user demand has been satisfied in the designing requirement that start display image rear indicator light extinguishes.
Equally, described switching circuit is if adopt metal-oxide-semiconductor to realize that then circuit connection structure and Fig. 2 are similar, and its grid connects the demonstration control pin 31 of master chip NB1, and source electrode and drain electrode are connected in parallel on the two ends of described light-emitting diode VDB1.And when adopting relay to constitute switching circuit, the demonstration control pin 31 control relay coils of master chip NB1 electric and dead electricity, normal open switch is connected in parallel on the two ends of described light-emitting diode VDB1.Because the foregoing circuit structure is easy to also for a person skilled in the art expect that therefore, the utility model has specifically disclosed it with regard to no longer additionally increasing accompanying drawing.
Indicator light control circuit of the present utility model is simple in structure, utilize the original master chip of video display apparatus or microprocessor and indicator light circuit, increase a spot of electronic device again, realized promptly that by two kinds of different connected modes two kinds of indicator light show control, with low cost, less to original design circuit change, satisfied the customer requirement in country variant and area.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. indicator light control circuit, comprise video display apparatus master chip and indicator light current supply circuit, it is characterized in that: in described master chip, include according to image and whether show the demonstration control pin of exporting corresponding high/low level signal, the demonstration control pin of described master chip connects the control end of a switching circuit, and the gating switch of described switching circuit is connected in the described indicator light current supply circuit.
2. indicator light control circuit according to claim 1 is characterized in that: described switching circuit is a NPN type triode, and the base stage of described triode connects the demonstration control pin of master chip, and emitter and collector is connected in the described indicator light current supply circuit.
3. indicator light control circuit according to claim 2 is characterized in that: the grounded emitter of described NPN type triode, and collector electrode connects the negative pole of indicator light, and the positive pole of indicator light connects power supply by divider resistance.
4. according to claim 1 or 2 or 3 described indicator light control circuits, it is characterized in that: described master chip receives the operating state detection signal from row circuit in the video display apparatus, whether determines it to show the height of control pin output level according to the row circuit working.
5. indicator light control circuit according to claim 1 is characterized in that: described switching circuit is relay or field effect transistor.
6. indicator light control circuit, comprise video display apparatus master chip and indicator light current supply circuit, it is characterized in that: in described master chip, include according to image and whether show the demonstration control pin of exporting corresponding high/low level signal, the demonstration control pin of described master chip connects the control end of a switching circuit, and the two ends of the gating switch of described switching circuit and the positive and negative polarities of described indicator light are in parallel.
7. indicator light control circuit according to claim 6, it is characterized in that: described switching circuit is a NPN type triode, the base stage of described triode connects the demonstration control pin of master chip, and emitter connects the negative pole of indicator light, and collector electrode connects the positive pole of indicator light.
8. indicator light control circuit according to claim 7 is characterized in that: the positive pole of described indicator light connects power supply by divider resistance, minus earth.
9. according to claim 6 or 7 or 8 described indicator light control circuits, it is characterized in that: described master chip receives the operating state detection signal from row circuit in the video display apparatus, whether determines it to show the height of control pin output level according to the row circuit working.
10. indicator light control circuit according to claim 6 is characterized in that: described switching circuit is relay or field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200189837U CN201018698Y (en) | 2007-03-01 | 2007-03-01 | Indication lamp control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200189837U CN201018698Y (en) | 2007-03-01 | 2007-03-01 | Indication lamp control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201018698Y true CN201018698Y (en) | 2008-02-06 |
Family
ID=39059200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200189837U Expired - Fee Related CN201018698Y (en) | 2007-03-01 | 2007-03-01 | Indication lamp control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201018698Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159010A (en) * | 2011-03-28 | 2011-08-17 | 上海华为技术有限公司 | Device and method for controlling indicator lights |
| CN103312951A (en) * | 2013-05-09 | 2013-09-18 | 苏州泽佑科技有限公司 | Carved image processing chip |
| CN105657940A (en) * | 2014-12-02 | 2016-06-08 | 施耐德电器工业公司 | Control system of electrical load |
| CN107006098A (en) * | 2014-12-10 | 2017-08-01 | 汤姆逊许可公司 | Indicator circuit and the device using the indicator circuit |
| CN107730879A (en) * | 2017-11-07 | 2018-02-23 | 汕头市鼎安电子科技有限公司 | A kind of zebra informant's row drive circuit of indicator to be linked by traffic lights |
| CN109152175A (en) * | 2014-11-27 | 2019-01-04 | 株式会社小糸制作所 | Lamp circuit and lamp system |
-
2007
- 2007-03-01 CN CNU2007200189837U patent/CN201018698Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159010A (en) * | 2011-03-28 | 2011-08-17 | 上海华为技术有限公司 | Device and method for controlling indicator lights |
| CN103312951A (en) * | 2013-05-09 | 2013-09-18 | 苏州泽佑科技有限公司 | Carved image processing chip |
| CN109152175A (en) * | 2014-11-27 | 2019-01-04 | 株式会社小糸制作所 | Lamp circuit and lamp system |
| CN105657940A (en) * | 2014-12-02 | 2016-06-08 | 施耐德电器工业公司 | Control system of electrical load |
| CN107006098A (en) * | 2014-12-10 | 2017-08-01 | 汤姆逊许可公司 | Indicator circuit and the device using the indicator circuit |
| CN107730879A (en) * | 2017-11-07 | 2018-02-23 | 汕头市鼎安电子科技有限公司 | A kind of zebra informant's row drive circuit of indicator to be linked by traffic lights |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201018698Y (en) | Indication lamp control circuit | |
| CN109152184A (en) | lamp control device and lighting system | |
| CN106981784B (en) | Energy-saving zero-power standby computer socket circuit | |
| CN203104871U (en) | Intelligently controlled DALI (digital addressable lighting interface) dimming control device | |
| CN207166829U (en) | A kind of control circuit and electric equipment of electric equipment indicator lamp | |
| CN210536989U (en) | LED drive circuit with little night-light function | |
| CN208369555U (en) | Skeleton symbol wall list firewire touch switch circuit | |
| CN203352860U (en) | Intelligent identification power supply during power grid blackout or artificial-switching power-off | |
| CN104535939B (en) | A kind of electronic product with NFC function | |
| CN108768374B (en) | Simple wall single-live-wire touch switch circuit | |
| CN200990080Y (en) | Electric source indicating lamp control circuit | |
| CN2665990Y (en) | Power supply socket with delayed-breaking-off function | |
| CN201536195U (en) | Energy-saving socket for home appliances in standby state | |
| CN103281821A (en) | Intelligent identification power supply during power grid blackout or artificial-switching power-off | |
| CN112698604A (en) | Low standby control circuit | |
| CN209545950U (en) | LED drive circuit and LED lamp | |
| CN208890476U (en) | A kind of pair delays the signal switch boards powered on | |
| CN209419968U (en) | Lamp control device and lighting system | |
| CN207665239U (en) | A kind of LED illumination regulated power supply | |
| CN220043716U (en) | Lamp control circuit and emergency lamp | |
| US20090237919A1 (en) | Illuminating device | |
| CN207460542U (en) | A kind of LED light of quick implementation pattern switching | |
| CN220823323U (en) | Touch intelligent lamp based on low-voltage protection | |
| CN212784882U (en) | Power supply switching circuit for emergency lighting lamp | |
| US20240204559A1 (en) | Emergency lamp control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20110301 |