CN201937563U - Standby low-power consumption power supply switch suitable for single chip microcomputer controller - Google Patents
Standby low-power consumption power supply switch suitable for single chip microcomputer controller Download PDFInfo
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- CN201937563U CN201937563U CN2010206942761U CN201020694276U CN201937563U CN 201937563 U CN201937563 U CN 201937563U CN 2010206942761 U CN2010206942761 U CN 2010206942761U CN 201020694276 U CN201020694276 U CN 201020694276U CN 201937563 U CN201937563 U CN 201937563U
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
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Abstract
The utility model discloses a standby low-power consumption power supply switch suitable for a single chip microcomputer controller, comprising a power field effect tube Q1 and a field effect tube Q2 connected in series with the power field effect tube Q1. The standby low-power consumption power supply switch suitable for the single chip microcomputer controller is characterized in that the power field effect tube Q1 is connected with an input end and an output end respectively, and the field effect tube Q2 is connected with the single chip microcomputer controller and a ground line respectively. The switch has the beneficial effects of having extremely low standby power consumption when staying in the switching-on state as a main power supply switch can be switched on-off by the single chip microcomputer controller in a measuring instrument; and the switch has low cost, is easy and convenient to implement, has high practicality, is very reliable and effective in operation, and is extremely easy to popularize.
Description
Technical field
The utility model relates to the standby low-power dissipation power supply switch that is applicable to singlechip controller.
Background technology
Along with the use of single-chip microcomputer in battery powered portable intelligent measuring instrument, the total power switch of measuring instrument need be controlled by single-chip microcomputer, so that intellectual measuring instrument is realized shutting down to save the energy of battery limited by single-chip microcomputer, yet the power consumption of mains switch under off state will directly influence the life-span of battery, especially for a long time be in portable intelligent measuring instrument under the off-mode, usually, cause battery under storage configuration, to damage because the stand-by power consumption of switch under off-mode is too high.
Summary of the invention
The purpose of this utility model is to provide a kind of standby low-power dissipation power supply switch that is applicable to singlechip controller.
The purpose of this utility model is achieved through the following technical solutions: the standby low-power dissipation power supply switch that is applicable to singlechip controller, comprise power field effect pipe Q1 and the field effect transistor Q2 that connects with power field effect pipe Q1, described power field effect pipe Q1 is connected with input and output respectively, and field effect transistor Q2 is connected with singlechip controller and ground wire respectively.
Power field effect pipe Q1 is parallel with resistance R 1, and field effect transistor Q2 is parallel with resistance R 2.
Field effect transistor Q2 is in series with diode D1, and diode D1 is in series with resistance R 3, and resistance R 3 is connected with singlechip controller.
Be applicable to the standby low-power dissipation power supply switch of singlechip controller, also comprise actuating switch SW1, and the end of actuating switch SW1 is connected with input, and the other end of actuating switch SW1 is connected with resistance R 2.
Described resistance R 2 is parallel with cutoff switch SW2.
Power field effect pipe Q1 makes the main switch of power supply, and when the grid of power field effect pipe Q1 was in ground level, power field effect pipe Q1 was in conducting state, and switch is in on-state; When the grid of power field effect pipe Q1 was in the input power level, power field effect pipe Q1 was in cut-off state, and switch is in off state.Q2 makes level conversion with field effect transistor, so that the ground level of exporting when singlechip controller sends shutdown command makes the grid of power field effect pipe Q1 be in the input power level, switch enters off state.After singlechip controller quit work, resistance R 2 made field effect transistor Q2 grid remain on ground level, thereby switch remains on off state.
During holding state, by pressing conducting button SW1, the grid of field effect transistor Q2 is in the input power level, field effect transistor Q2 is in conducting state, thereby the grid of power field effect pipe Q1 is in ground level, and power field effect pipe Q1 is in conducting state, and switch is in on-state; Singlechip controller so startup work, singlechip controller makes power field effect pipe Q1 be in conducting state by singlechip controller out-put supply level, thus switch keeping is opened state.
When needing shutdown, pressing and making field effect transistor Q2 grid by button SW2 or singlechip controller output ground level is ground level, field effect transistor Q2 enters cut-off state, the grid of power field effect pipe Q1 is in the input power level because of the biasing of resistance R, the grid of power field effect pipe Q1 is in the input power level, and switch enters off state.
When the described standby low-power dissipation power supply switch that is applicable to singlechip controller is in off state, power field effect pipe Q1 and level conversion field effect transistor Q2 all are in cut-off state, thereby the shutoff leakage current of two field effect transistor only arranged from the electric current that input flows through, select the power field effect pipe Q1 and the level conversion field effect transistor Q2 of low current leakage for use, thereby stand-by power consumption is extremely low.
To sum up, the beneficial effects of the utility model are: the standby low-power dissipation power supply switch of singlechip controller that is applicable to of the present utility model can turn-off operation to total power switch by the singlechip controller in the measuring instrument, and the stand-by power consumption when switch is in off state is extremely low.The utility model cost is very low, and is simple and easy to do, practical, and operation is very reliable, effective, very easily promotes.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but execution mode of the present utility model is not limited thereto.
Embodiment one
As shown in Figure 1, be applicable to the standby low-power dissipation power supply switch of singlechip controller, comprise power field effect pipe Q1 and the field effect transistor Q2 that connects with power field effect pipe Q1, described power field effect pipe Q1 is connected with input and output respectively, and field effect transistor Q2 is connected with singlechip controller and ground wire respectively.
Power field effect pipe Q1 is parallel with resistance R 1, and field effect transistor Q2 is parallel with resistance R 2.
Field effect transistor Q2 is in series with diode D1, and diode D1 is in series with resistance R 3, and resistance R 3 is connected with singlechip controller.
Be applicable to the standby low-power dissipation power supply switch of singlechip controller, also comprise actuating switch SW1, and the end of actuating switch SW1 is connected with input, and the other end of actuating switch SW1 is connected with resistance R 2.
Described resistance R 2 is parallel with cutoff switch SW2.
Input is connected with battery in the intellectual measuring instrument, and output is connected with circuit board in the intellectual measuring instrument, and singlechip controller is connected with pin in the intellectual measuring instrument.
The actuating switch SW1 that pushes button, the grid of field effect transistor Q2 is in the input power level, and field effect transistor Q2 is in conducting state, thereby the grid of power field effect pipe Q1 is in ground level, and power field effect pipe Q1 is in conducting state, and switch is in on-state; Singlechip controller so startup work, singlechip controller out-put supply level makes power field effect pipe Q1 be in conducting state, thus switch keeping is opened state.
Pressing cutoff switch SW2 or singlechip controller output ground level, to make field effect transistor Q2 grid be ground level, field effect transistor Q2 enters cut-off state, the grid of power field effect pipe Q1 is in the input power level because of the biasing of resistance R 1, the grid of power field effect pipe Q1 is in the input power level, and switch enters off state.
Just can better realize the utility model as mentioned above.
Claims (5)
1. be applicable to the standby low-power dissipation power supply switch of singlechip controller, comprise power field effect pipe Q1 and the field effect transistor Q2 that connects with power field effect pipe Q1, it is characterized in that, described power field effect pipe Q1 is connected with input and output respectively, and field effect transistor Q2 is connected with singlechip controller and ground wire respectively.
2. the standby low-power dissipation power supply switch that is applicable to singlechip controller according to claim 1 is characterized in that described field effect transistor Q2 is in series with diode D1, and diode D1 is in series with resistance R 3, and resistance R 3 is connected with singlechip controller.
3. the standby low-power dissipation power supply switch that is applicable to singlechip controller according to claim 1 is characterized in that described power field effect pipe Q1 is parallel with resistance R 1, and field effect transistor Q2 is parallel with resistance R 2.
4. the standby low-power dissipation power supply switch that is applicable to singlechip controller according to claim 3 is characterized in that, also comprises actuating switch SW1, and the end of actuating switch SW1 is connected with input, and the other end of actuating switch SW1 is connected with resistance R 2.
5. according to claim 3 or the 4 described standby low-power dissipation power supply switches that are applicable to singlechip controller, it is characterized in that described resistance R 2 is parallel with cutoff switch SW2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206942761U CN201937563U (en) | 2010-12-31 | 2010-12-31 | Standby low-power consumption power supply switch suitable for single chip microcomputer controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206942761U CN201937563U (en) | 2010-12-31 | 2010-12-31 | Standby low-power consumption power supply switch suitable for single chip microcomputer controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937563U true CN201937563U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206942761U Expired - Fee Related CN201937563U (en) | 2010-12-31 | 2010-12-31 | Standby low-power consumption power supply switch suitable for single chip microcomputer controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN201937563U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799130A (en) * | 2012-07-26 | 2012-11-28 | 西安电子科技大学 | Low voltage and low power mains switch and control method |
| CN102929163A (en) * | 2012-10-26 | 2013-02-13 | 中国兵器工业集团第二一四研究所苏州研发中心 | Power supply electronic switch circuit capable of being automatically controlled and completely powering off |
| CN103402196A (en) * | 2013-07-31 | 2013-11-20 | 浙江金之路信息科技有限公司 | Improved WLAN (Wireless Local Area Network) accurate location device and method |
| CN105003253A (en) * | 2015-08-18 | 2015-10-28 | 重庆六合物联网有限公司 | Wireless inclinometer device with accurate angle measurement function |
-
2010
- 2010-12-31 CN CN2010206942761U patent/CN201937563U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799130A (en) * | 2012-07-26 | 2012-11-28 | 西安电子科技大学 | Low voltage and low power mains switch and control method |
| CN102799130B (en) * | 2012-07-26 | 2015-01-21 | 西安电子科技大学 | Low voltage and low power mains switch and control method |
| CN102929163A (en) * | 2012-10-26 | 2013-02-13 | 中国兵器工业集团第二一四研究所苏州研发中心 | Power supply electronic switch circuit capable of being automatically controlled and completely powering off |
| CN102929163B (en) * | 2012-10-26 | 2015-07-15 | 中国兵器工业集团第二一四研究所苏州研发中心 | Power supply electronic switch circuit capable of being automatically controlled and completely powering off |
| CN103402196A (en) * | 2013-07-31 | 2013-11-20 | 浙江金之路信息科技有限公司 | Improved WLAN (Wireless Local Area Network) accurate location device and method |
| CN105003253A (en) * | 2015-08-18 | 2015-10-28 | 重庆六合物联网有限公司 | Wireless inclinometer device with accurate angle measurement function |
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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: 20110817 Termination date: 20111231 |