CN204216866U - A kind of reset circuit and electronic equipment - Google Patents
A kind of reset circuit and electronic equipment Download PDFInfo
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- CN204216866U CN204216866U CN201420749431.3U CN201420749431U CN204216866U CN 204216866 U CN204216866 U CN 204216866U CN 201420749431 U CN201420749431 U CN 201420749431U CN 204216866 U CN204216866 U CN 204216866U
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- switching tube
- power supply
- reset circuit
- resistance
- reset
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Abstract
The utility model embodiment provides a kind of reset circuit and electronic equipment, relates to resetting technique field, is powered by cutting system, makes all electric elements power down in electronic equipment realize resetting.This reset circuit comprises power supply adaptor, and the output of described power supply adaptor is used for output system supply power voltage, and described reset circuit also comprises: power supply, the first switching tube, the first resistance, reset switch; The source electrode of described first switching tube is connected with described power supply, and the drain electrode of described first switching tube is connected with the input of described power supply adaptor, and the grid of described first switching tube is connected with one end of described first resistance, the other end ground connection of described first resistance; One end of described reset switch is connected with the source electrode of described first switching tube, and the other end of described reset switch is connected with the grid of described first switching tube.
Description
Technical field
The present invention relates to resetting technique field, particularly relate to a kind of reset circuit and electronic equipment.
Background technology
Along with the development of electronic equipment, in order to reduce direct control to electronic equipment and control, general employing remote controller carries out far distance controlled to electronic equipment, therefore, remote controller is also gradually towards intelligent development, and better handling and better interaction effect becomes the target that intelligent remote controller is pursued.
At present, the electric elements such as Master control chip, Keyboard management chip, wireless transmission chip, transducer, coupling capacitance are generally comprised in intelligent remote controller.When there is the situation crashing or do not have to respond in remote manipulator system, generally need to carry out reset operation, and current existing technical scheme resets mainly for Master control chip, so, when other electric elements beyond Master control chip go wrong, the method only resetted to Master control chip cannot solve other electric elements institute produced problem.
Summary of the invention
Embodiments of the invention provide a kind of reset circuit and electronic equipment, are powered by cutting system, make all electric elements power down in electronic equipment realize resetting.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, embodiments provides a kind of reset circuit, comprises power supply adaptor, and the output of described power supply adaptor is used for output system supply power voltage, and described reset circuit also comprises: power supply, the first switching tube, the first resistance, reset switch;
The source electrode of described first switching tube is connected with described power supply, and the drain electrode of described first switching tube is connected with the input of described power supply adaptor, and the grid of described first switching tube is connected with one end of described first resistance, the other end ground connection of described first resistance; One end of described reset switch is connected with the source electrode of described first switching tube, and the other end of described reset switch is connected with the grid of described first switching tube.
Second aspect, embodiments provides a kind of electronic equipment, comprises the reset circuit described in above-mentioned first aspect.
A kind of reset circuit that the embodiment of the present invention provides and electronic equipment, the source electrode of the first switching tube of this reset circuit is connected with power supply, the drain electrode of the first switching tube is connected with the input of power supply adaptor, the grid of the first switching tube is connected with one end of the first resistance, the other end ground connection of the first resistance; One end of reset switch is connected with the source electrode of the first switching tube, and the other end of reset switch is connected with the grid of the first switching tube; The output output system supply power voltage of power supply adaptor.Like this, when carrying out reset operation and pressing reset switch, voltage difference between the source electrode of the first switching tube and grid is 0, do not meet the condition of the first switching tube conducting, therefore, first switching tube turns off, the shutoff of the first switching tube makes the power down of system power supply voltage, namely have switched the power supply to whole system, compared with prior art, solve and only reset for Master control chip, and to the problem that other electric elements cannot reset, and the reset circuit that the embodiment of the present invention provides, can when resetting, cut off the power supply of whole system, to make in electronic equipment all electric elements can power down, realize resetting.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of a kind of reset circuit that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the another kind of reset circuit that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of the another kind of reset circuit that Fig. 3 provides for the embodiment of the present invention;
A kind of concrete reset circuit schematic diagram that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of reset circuit, as described in Figure 1, this reset circuit comprises: power supply 2, first switching tube 3, first resistance 5, reset switch 4 and power supply adaptor 1.
Wherein, the source electrode of the first switching tube 3 is connected with power supply 2, and the drain electrode of the first switching tube 3 is connected with the input of power supply adaptor 1, and the grid of the first switching tube 3 is connected with one end of the first resistance 5, the other end ground connection of the first resistance 5; One end of reset switch 4 is connected with the source electrode of the first switching tube 3, and the other end of reset switch 4 is connected with the grid of the first switching tube 3; The output output system supply power voltage of power supply adaptor 1.
Like this, when carrying out reset operation, when pressing reset switch 4, namely when reset switch 4 closes, voltage difference between the source electrode of the first switching tube 3 and grid is 0, does not meet the condition of the first switching tube 3 conducting, therefore, first switching tube 3 turns off, the drain electrode Non voltage output of the first switching tube 3, causes the power down of system power supply voltage, that is, when pressing reset switch 4, cut off the power supply of whole system; Compared with prior art, solve and only reset for Master control chip, and to the problem that other electric elements cannot reset, and the reset circuit that the embodiment of the present invention provides, can when resetting, cut off the power supply of whole system, to make in electronic equipment all electric elements can power down, realize resetting.
Further, as shown in Figure 2, on the basis of the reset circuit shown in Fig. 1, this reset circuit also comprises: second switch pipe 6.
Wherein, the grid of second switch pipe 6 is connected with the grid of the first switching tube 3, and the drain electrode of second switch pipe 6 is connected with the output of power supply adaptor 1, the source ground of second switch pipe 6.
When pressing reset switch 4, when namely reset switch 4 closes, between the grid of second switch pipe 6 and source electrode, there is voltage difference, second switch pipe 6 conducting under the condition meeting the conducting of second switch pipe; Due to before resetting, system power supply voltage is that each electric elements in electronic equipment are powered, certain coupling capacitance can be produced, when system power failure, the electric charge that coupling capacitance is deposited can not discharge immediately, so, a period of time is needed to the level making each electric elements carry out resetting from the power down of system power supply voltage, now, second switch pipe 6 provides bleed-off circuit for giving system power supply voltage, to accelerate the power down process of system power supply voltage, the electric charge that release coupling capacitance is deposited, shortens resetting time.
Further, as shown in Figure 3, this reset circuit also comprises: the second resistance 7; One end of second resistance 7 is connected with the output of power supply adaptor 1, and the other end of the second resistance 7 unit is connected with the drain electrode of second switch pipe 6.Wherein, the second resistance 7, for when system power supply voltage is released, plays the effect of current-limiting protection.
Further, as shown in Figure 3, this reset circuit also comprises: the 3rd resistance 8; One end of 3rd resistance 8 is connected with the grid of the first switching tube 3, and the other end of the 3rd resistance 8 is connected with the grid of second switch pipe 6.Wherein, the 3rd resistance 8 is for isolating the first switching tube 3 and second switch pipe 6.
Further, as shown in Figure 3, this reset circuit also comprises: magnetic bead 9; One end of magnetic bead 9 is connected with power supply 2, and the other end of magnetic bead 9 is connected with the source electrode of the first switching tube 3.Wherein, magnetic bead 9 is for suppressing high-frequency noise or spike interference.
Wherein, first switching tube described above can be PMOS (Positive channel MetalOxide Semiconductor, P-type mos) manage or triode, described second switch pipe can be NMOS (Negative channel Metal Oxide Semiconductor, N-type metal-oxide semiconductor (MOS)) pipe or triode.
Concrete, as shown in Figure 4, the embodiment of the present invention for the first switching tube 3 be PMOS (representing with V1), second switch pipe 6 is NMOS tube (representing with V2), the first resistance 5 comprises resistance R1, the second resistance 7 comprises resistance R2, the 3rd resistance 8 comprises resistance R3 and is described.Wherein, power supply 2 represents with VBAT, and the voltage after the first switching tube 3 represents with VBAT_OUT, and the system power supply voltage VDD that VBAT_OUT exports after power supply 2 adapter represents, reset switch 4 represents with S1, and power supply adaptor 1 represents with Adapter.
When the systems are operating normally, reset switch S1 does not press, voltage difference is had between the grid of switching tube V1 and source electrode, meet the turn-on condition of switching tube V1, switching tube V1 conducting, now, the drain electrode output voltage VBAT_OUT of switching tube V1, to provide normal system power supply voltage VDD, whole electronic equipment also normally works.Meanwhile, the voltage difference between the grid of switching tube V2 and source electrode is 0, does not meet the turn-on condition of switching tube V2, and switching tube V2 turns off.
When system exception needs to carry out reset operation, press reset switch S1, the voltage difference between the grid of switching tube V1 and source electrode is 0, does not meet the turn-on condition of switching tube V1, and switching tube V1 turns off, VBAT_OUT power down, and then causes VDD power down; Meanwhile, have voltage difference between the grid of switching tube V2 and source electrode, meet the turn-on condition of switching tube V2, switching tube V2 conducting, VDD forms discharge loop by resistance R2, switching tube V2.
By foregoing description, when carrying out reset operation, press reset switch S1, switching tube V1 can Switching power VBAT to the power supply of system, make all electric elements power down in electronic equipment; Meanwhile, switching tube V2 is used for providing bleed-off circuit to VDD, to accelerate the power down process of VDD, shortens resetting time, system has been resetted fast, to enter replay phase.
Further, the embodiment of the present invention additionally provides a kind of electronic equipment, and this electronic equipment comprises arbitrary reset circuit described above.
It should be noted that, each first resistance, the second resistance, the 3rd resistance can be that the combination of one or more device realizes above, namely above-mentioned first resistance can comprise at least one resistance to any one in the 3rd resistance, when comprising at least two resistance, described at least two resistance can be in parallel, also can be series connection, and the size of described resistance can be fixing, also can be change.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a reset circuit, comprises power supply adaptor, and the output of described power supply adaptor is used for output system supply power voltage, and it is characterized in that, described reset circuit also comprises: power supply, the first switching tube, the first resistance, reset switch;
The source electrode of described first switching tube is connected with described power supply, and the drain electrode of described first switching tube is connected with the input of described power supply adaptor, and the grid of described first switching tube is connected with one end of described first resistance, the other end ground connection of described first resistance; One end of described reset switch is connected with the source electrode of described first switching tube, and the other end of described reset switch is connected with the grid of described first switching tube.
2. reset circuit according to claim 1, is characterized in that, described reset circuit also comprises: second switch pipe;
The grid of described second switch pipe is connected with the grid of described first switching tube, and the drain electrode of described second switch pipe is connected with the output of described power supply adaptor, the source ground of described second switch pipe.
3. reset circuit according to claim 2, is characterized in that, described reset circuit also comprises: the second resistance;
One end of described second resistance is connected with the output of described power supply adaptor, and the other end of described second resistance unit is connected with the drain electrode of described second switch pipe.
4. the reset circuit according to Claims 2 or 3, is characterized in that, described reset circuit also comprises: the 3rd resistance;
One end of described 3rd resistance is connected with the grid of described first switching tube, and the other end of described 3rd resistance is connected with the grid of described second switch pipe.
5. the reset circuit according to any one of claim 1-3, is characterized in that, described reset circuit also comprises: magnetic bead;
One end of described magnetic bead is connected with described power supply, and the other end of described magnetic bead is connected with the source electrode of described first switching tube.
6. reset circuit according to claim 1, is characterized in that, described first switching tube is PMOS or triode.
7. reset circuit according to claim 2, is characterized in that, described second switch pipe is NMOS tube or triode.
8. an electronic equipment, is characterized in that, comprises the reset circuit described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749431.3U CN204216866U (en) | 2014-12-02 | 2014-12-02 | A kind of reset circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749431.3U CN204216866U (en) | 2014-12-02 | 2014-12-02 | A kind of reset circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216866U true CN204216866U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420749431.3U Expired - Fee Related CN204216866U (en) | 2014-12-02 | 2014-12-02 | A kind of reset circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216866U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227163A (en) * | 2015-08-28 | 2016-01-06 | 青岛海信电器股份有限公司 | Reset circuit and remote controller |
| CN106094808A (en) * | 2016-08-15 | 2016-11-09 | 威胜集团有限公司 | Controller reset circuit and the measuring instrument made with this circuit |
| CN113793491A (en) * | 2021-10-12 | 2021-12-14 | 惠州市博实结科技有限公司 | Key control circuit and remote controller |
-
2014
- 2014-12-02 CN CN201420749431.3U patent/CN204216866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227163A (en) * | 2015-08-28 | 2016-01-06 | 青岛海信电器股份有限公司 | Reset circuit and remote controller |
| CN106094808A (en) * | 2016-08-15 | 2016-11-09 | 威胜集团有限公司 | Controller reset circuit and the measuring instrument made with this circuit |
| CN113793491A (en) * | 2021-10-12 | 2021-12-14 | 惠州市博实结科技有限公司 | Key control circuit and remote controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160726 Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Qingdao Hisense Electric Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: Qingdao Hisense Xinxin Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20191202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |