CN202663486U - Power supply control circuit for television - Google Patents
Power supply control circuit for television Download PDFInfo
- Publication number
- CN202663486U CN202663486U CN 201220273503 CN201220273503U CN202663486U CN 202663486 U CN202663486 U CN 202663486U CN 201220273503 CN201220273503 CN 201220273503 CN 201220273503 U CN201220273503 U CN 201220273503U CN 202663486 U CN202663486 U CN 202663486U
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- circuit
- power supply
- television
- control circuit
- supply control
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- Expired - Fee Related
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Abstract
The utility model relates to televisions and particularly relates to a power supply control circuit for a television. The standby power output of the television is connected with filter capacitors (C1 and C2) which are in parallel connection with each other, and then connected with a power supply terminal VCC of a singlechip U1; one input terminal GP2 of the singlechip U1 is connected with the output terminal of a remote control receiving circuit; and another input terminal GP3 of the singlechip U1 is connected with a keying reception circuit through a switching passage of a switch circuit. Compared with the prior art, the power supply control circuit for the television, disclosed by the utility model, has the advantages that the structure is simple, the circuit board space occupation is little, the parameter configuration for peripheral devices is easy, and the problem of serious standby power consumption of an electronic system can be conveniently and efficiently solved.
Description
Technical field
The utility model relates to television set, particularly a kind of TV set power control circuit.
Background technology
Existing television set, its readiness control circuit generally adopt the mode of standby triode control relay break-make, realize the turning on and off of television set main power source, and then the control television set enter operation or holding state.When television set was in holding state, the start-up command of sending in order to receive remote controller or keypad realized the accurate startup of television set, needs master chip still to be in the energising operating state.
But, along with the development of digital signal (such as digital TV signal) treatment technology and popularizing of digital multimedia technology, performance as the main decoder chip of its core component has also obtained lifting at full speed, the integrated level of chip is more and more higher, all the present canot compare with the past for its processing speed and disposal ability, the several functions such as main decoder chip can compatible decoding, line by line scan, master cpu, convergent-divergent processing, when circuit structure was greatly simplified, its power consumption also increased thereupon.
Because the master cpu that television set adopts is embedded in the main decoder chip, when television set is in holding state, just cause CPU to pour into electric current to other pin of chip inevitably, cause the increase of stand-by power consumption.Simultaneously, under holding state, because all there are quiescent dissipation in switch transformer, power supply control chip etc., so, television set realizes that under holding state stand-by power consumption is very large less than the difficulty of 1W, in international and domestic today that requires environmental protection and energy saving, high power consumption has become a wretched insufficiency of high-performance TV machine.In addition, this scheme requires standby relay to have long useful life, and reliable in quality, and therefore, circuit cost is higher, and needs checking with the compatibility of Core of TV set.
The utility model content
The purpose of this utility model is to provide a kind of TV set power control circuit that reduces standby energy consumption.
The purpose of this utility model is achieved through the following channels: a kind of TV set power control circuit, and the output of TV standby power supply connects filter capacitor C1, C2 parallel with one another, meets the power end VCC of single-chip microcomputer U1 again; Described single-chip microcomputer U1 one road input GP2 connects the output of remote-control receiving circuit, and other one road input GP3 of single-chip microcomputer U1 connects the button receiving circuit by the switch ways of switching circuit.The upper pull-up circuit that connects of the input GP2 of described single-chip microcomputer U1.
Compared with prior art, a kind of TV set power control circuit of the utility model is simple in structure, takies circuit board space little, and the parameter configuration of peripheral components is easy, can solve easily and efficiently the serious problem of electronic system stand-by power consumption.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the utility model circuit diagram.
Embodiment
As shown in Figure 1, when television set enters holding state, the standby DC power supply 5V_STB of standby power output+5V in the power panel carries out exporting to after filtering is processed the power end VCC of single-chip microcomputer U1 by filter capacitor C1, C2 parallel with one another, U1 provides direct-current working volts for single-chip microcomputer, and each road power supply of other on the power panel is not opened.In described single-chip microcomputer U1, include the multichannel input/output terminal, wherein one road input GP2 connects the output of remote-control receiving circuit, receive the remote control command IR_IN that remote controller sends, pulse signal such as a sequence, and then after described remote control command I R_I N resolved, generate corresponding control signal, such as the start control signal PW_ON of control main power source connection or the pass machine control signal OFF_INV of control main power source shutoff, transfer to the switch control end of main power source by its output GP4.Other one road input GP3 of single-chip microcomputer U1 connects the button receiving circuit by the switch ways of switching circuit, the start that the reception user sends by the standby button that triggers on the keypad/standby command signal POWER_KEY.
In order to realize the accurate reception to remote control command IR_IN, can connect a pull-up circuit at the input GP2 of single-chip microcomputer U1, to improve the antijamming capability of remote signal in the circuit transmission course.
Claims (2)
1. TV set power control circuit is characterized in that: the output of TV standby power supply connects filter capacitor C1, C2 parallel with one another, meets the power end VCC of single-chip microcomputer U1 again; Described single-chip microcomputer U1 one road input GP2 connects the output of remote-control receiving circuit, and other one road input GP3 of single-chip microcomputer U1 connects the button receiving circuit by the switch ways of switching circuit.
2. a kind of TV set power control circuit as claimed in claim 1 is characterized in that: the upper pull-up circuit that connects of the input GP2 of described single-chip microcomputer U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273503 CN202663486U (en) | 2012-06-12 | 2012-06-12 | Power supply control circuit for television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273503 CN202663486U (en) | 2012-06-12 | 2012-06-12 | Power supply control circuit for television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202663486U true CN202663486U (en) | 2013-01-09 |
Family
ID=47458357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220273503 Expired - Fee Related CN202663486U (en) | 2012-06-12 | 2012-06-12 | Power supply control circuit for television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202663486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226888A (en) * | 2013-05-02 | 2013-07-31 | 四川省迪特尔电子有限公司 | Power supply electric circuit for intelligently controlled infrared remote control intelligent electricity saving standby system |
-
2012
- 2012-06-12 CN CN 201220273503 patent/CN202663486U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226888A (en) * | 2013-05-02 | 2013-07-31 | 四川省迪特尔电子有限公司 | Power supply electric circuit for intelligently controlled infrared remote control intelligent electricity saving standby system |
| CN103226888B (en) * | 2013-05-02 | 2015-08-19 | 四川省迪特尔电子有限公司 | A kind of infrared remote control intelligent energy-saving standby system power circuit of Based Intelligent Control |
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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: 20130109 Termination date: 20140612 |