CN202856706U - Electronic switch - Google Patents
Electronic switch Download PDFInfo
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- CN202856706U CN202856706U CN 201220569035 CN201220569035U CN202856706U CN 202856706 U CN202856706 U CN 202856706U CN 201220569035 CN201220569035 CN 201220569035 CN 201220569035 U CN201220569035 U CN 201220569035U CN 202856706 U CN202856706 U CN 202856706U
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- effect transistor
- field effect
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- 230000005669 field effect Effects 0.000 claims abstract description 41
- 230000005611 electricity Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides an electronic switch. The electronic switch comprises a P-channel field effect transistor Q1, a battery, a resistor R1, an N-channel field effect transistor Q2, a diode D2, a diode D3 and a switch S1. The source of the P-channel field effect transistor Q1 is connected with the positive electrode VCC of the battery, the drain of the P-channel field effect transistor Q1 is used as the output end for supplying power to main circuits, such as a CPU, etc., the resistor R1 is connected across the source of the P-channel field effect transistor Q1 and the gate of the P-channel field effect transistor Q1, the gate of the P-channel field effect transistor Q1 is connected onto the drain of the N-channel field effect transistor Q2 and the positive electrode of the diode D2 at the same time, the gate of the N-channel field effect transistor Q2 is connected to one control port of the CPU, the source of the N-channel field effect transistor Q2 is grounded, the negative electrode of the diode D2 is connected with the negative electrode of the diode D3, the negative electrode of the diode D2 is connected with one end of the button switch S1 at the same time, the other end of the switch S1 is grounded, the positive electrode of the diode D3 is connected with the drain of the P-channel field effect transistor Q1 through the resistor R2, and the positive electrode of the diode D3 is connected with the other control port of the CPU at the same time. According to the electronic switch, only a few commonly-used discrete devices are needed, and advantages of simple circuit, complete switch-off and low cost can be realized.
Description
Technical field
The utility model relates to a kind of electronic switching circuit, belongs to automation field.
Background technology
Traditional electronic switch generally adopts logic chip to build, or adopts the Enable Pin of controlling the voltage regulation of electric power sources chip as mains switch.Traditional exemplary electronic switch is as shown in Figure 1:
Its operation principle is: after S1 presses, and the T1 conducting, the EN end of IC1 is high level, the IC1 conducting, vout is output as the power supply of CU main circuit, after the CPU work, P1.1 is set to low level, and after S1 unclamped, T1 is conducting still, at this moment, S1 can by the P1.2 input of CPU, use as common key-press, and can be judged by CPU the state of S1, as required P1.1 is set to high level, realizes the power remove function.
The shortcoming of above circuit is:
1, circuit is complicated, adopted IC1 with the pressure regulation chip of enable port as switch control chip, cost is higher.
2, have no progeny in the IC1 pass, IC1 generally works under standby mode, and in battery powered portable equipment, this standby mode power consumption is not allowed to ignore yet, and will shorten the battery stand-by time, and it is not very desirable that the sort circuit battery turn-offs effect.
3, this circuit closes at IC1 and has no progeny, R1, R4 circuit are not turn-offed, and P1.1 and P1.2 directly are connected on cpu port, there is certain leakage current, more seriously, at P1.1 and P1.2 electricity arranged first, and the moment that powers on behind the CPU1, occur easily " latch-up ", cause P1.1 and P1.2 port even cpu chip to damage, have design defect.
Summary of the invention
For above-mentioned weak point of the prior art, the purpose of this utility model provides the electronic switch that a kind of circuit is simple, with low cost, the long while of battery stand-by time can also avoid " latch-up " to occur.
To achieve these goals, the utility model provides following technical scheme: a kind of electronic switch, comprise P-channel field-effect transistor (PEFT) pipe Q1, battery, resistance R 1, N channel field-effect pipe Q2, diode D2, diode D3, switch S 1, described P-channel field-effect transistor (PEFT) pipe Q1 source electrode meets anode VCC, P-channel field-effect transistor (PEFT) pipe Q1 drain electrode is powered as main circuits such as being output as CPU, resistance R 1 is connected across between the source electrode and grid of P-channel field-effect transistor (PEFT) pipe Q1, the grid of P-channel field-effect transistor (PEFT) pipe Q1 is connected to the drain electrode of N channel field-effect pipe Q2 and the positive pole of diode D2 simultaneously, the grid of N channel field-effect pipe Q2 is connected to port of control of CPU, the source ground of N channel field-effect pipe Q2, the negative pole of diode D2 links to each other with the negative pole of diode D3, the negative pole of diode D2 connects the end of push-button switch S1 simultaneously, the other end ground connection of switch S 1, the positive pole of diode D3 links to each other with the drain electrode of P-channel field-effect transistor (PEFT) pipe Q1 by resistance R 2, and the anodal of diode D3 links to each other with another control port of CPU simultaneously.
Can find out that by above scheme this Novel electronic switching circuit will be simplified traditional circuit, reduce circuit cost, it is more thorough that switch is turn-offed, to prolong the battery stand-by time, and partial circuit also can not occur simultaneously and not have power cutoff, and the situation that causes " latch-up " to occur.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is conditional electronic switching circuit figure;
Fig. 2 is circuit diagram of the present utility model.
Embodiment
Further describe the utility model below in conjunction with specific embodiment and accompanying drawing.
As shown in Figure 2, as a kind of embodiment of the present utility model, this electronic switch comprises P-channel field-effect transistor (PEFT) pipe Q1, battery, resistance R 1, N channel field-effect pipe Q2, diode D2, diode D3, switch S 1, described P-channel field-effect transistor (PEFT) pipe Q1 source electrode meets anode VCC, P-channel field-effect transistor (PEFT) pipe Q1 drain electrode is powered as main circuits such as being output as CPU, resistance R 1 is connected across between the source electrode and grid of P-channel field-effect transistor (PEFT) pipe Q1, the grid of P-channel field-effect transistor (PEFT) pipe Q1 is connected to the drain electrode of N channel field-effect pipe Q2 and the positive pole of diode D2 simultaneously, the grid of N channel field-effect pipe Q2 is connected to port of control of CPU, the source ground of N channel field-effect pipe Q2, the negative pole of diode D2 links to each other with the negative pole of diode D3, the negative pole of diode D2 connects the end of push-button switch S1 simultaneously, the other end ground connection of switch S 1, the positive pole of diode D3 links to each other with the drain electrode of P-channel field-effect transistor (PEFT) pipe Q1 by resistance R 2, the anodal of diode D3 links to each other with another control port of CPU simultaneously, this electronic switching circuit only needs a small amount of several discrete devices commonly used to get final product, circuit is simple, and is with low cost.
During this circuit working: after S1 presses, the Q1 conducting, the CPU1 main circuit obtains electricity work, CPU1 is set to high level with P1.1, the Q2 conducting, after S1 unclamped, Q1 is conducting still, at this moment, S1 can by the P1.2 input of CPU, use as common key-press, and can be judged by CPU the state of S1, as required P1.1 is set to low level, realizes the power remove function.Have no progeny in the pass, all components and parts all no longer need power consumption, selected MOSFET tube leakage current is minimum, therefore the battery stand-by time will prolong, and the P1.1 that this electronic switching circuit links to each other with the CPU main circuit and P1.2 are along with the shutoff of electronic switch, to thoroughly turn-off, and will conventional switch circuit " latch-up " defective can not occur, circuit working is more reliable.
More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the execution mode of the utility model embodiment are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, all will change on embodiment and range of application, in sum, this description should not be construed as restriction of the present utility model.
Claims (1)
1. electronic switch, comprise P-channel field-effect transistor (PEFT) pipe Q1, battery, resistance R 1, N channel field-effect pipe Q2, diode D2, diode D3, switch S 1, it is characterized in that: described P-channel field-effect transistor (PEFT) pipe Q1 source electrode meets anode VCC, P-channel field-effect transistor (PEFT) pipe Q1 drain electrode is powered as main circuits such as being output as CPU, resistance R 1 is connected across between the source electrode and grid of P-channel field-effect transistor (PEFT) pipe Q1, the grid of P-channel field-effect transistor (PEFT) pipe Q1 is connected to the drain electrode of N channel field-effect pipe Q2 and the positive pole of diode D2 simultaneously, the grid of N channel field-effect pipe Q2 is connected to port of control of CPU, the source ground of N channel field-effect pipe Q2, the negative pole of diode D2 links to each other with the negative pole of diode D3, the negative pole of diode D2 connects the end of push-button switch S1 simultaneously, the other end ground connection of switch S 1, the positive pole of diode D3 links to each other with the drain electrode of P-channel field-effect transistor (PEFT) pipe Q1 by resistance R 2, and the anodal of diode D3 links to each other with another control port of CPU simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569035 CN202856706U (en) | 2012-10-23 | 2012-10-23 | Electronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569035 CN202856706U (en) | 2012-10-23 | 2012-10-23 | Electronic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856706U true CN202856706U (en) | 2013-04-03 |
Family
ID=47987851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220569035 Expired - Fee Related CN202856706U (en) | 2012-10-23 | 2012-10-23 | Electronic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856706U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883166A (en) * | 2014-12-11 | 2015-09-02 | 北汽福田汽车股份有限公司 | Electric vehicle power-off delay circuit with reset function |
| CN105162443A (en) * | 2015-10-21 | 2015-12-16 | 珠海格力电器股份有限公司 | Periodic wake-up low-power-consumption timing circuit |
| CN106505720A (en) * | 2016-11-15 | 2017-03-15 | 深圳天珑无线科技有限公司 | A kind of on-off circuit and terminal unit for solving shutdown electric leakage |
| CN104300954B (en) * | 2014-09-30 | 2018-04-27 | 苏州天准科技股份有限公司 | A kind of emergency stop circuit based on double metal-oxide-semiconductors, packaging body, emergency stop circuit device |
-
2012
- 2012-10-23 CN CN 201220569035 patent/CN202856706U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300954B (en) * | 2014-09-30 | 2018-04-27 | 苏州天准科技股份有限公司 | A kind of emergency stop circuit based on double metal-oxide-semiconductors, packaging body, emergency stop circuit device |
| CN104883166A (en) * | 2014-12-11 | 2015-09-02 | 北汽福田汽车股份有限公司 | Electric vehicle power-off delay circuit with reset function |
| CN105162443A (en) * | 2015-10-21 | 2015-12-16 | 珠海格力电器股份有限公司 | Periodic wake-up low-power-consumption timing circuit |
| CN105162443B (en) * | 2015-10-21 | 2018-07-03 | 珠海格力电器股份有限公司 | Periodic wake-up low-power-consumption timing circuit |
| CN106505720A (en) * | 2016-11-15 | 2017-03-15 | 深圳天珑无线科技有限公司 | A kind of on-off circuit and terminal unit for solving shutdown electric leakage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING ANBIAO TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XIANG WU Effective date: 20130327 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400037 SHAPINGBA, CHONGQING TO: 400039 JIULONGPO, CHONGQING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130327 Address after: 400039 Chongqing Jiulongpo Branch City Road No. 71 Erlang students Pioneering Park D2-4 Patentee after: Chongqing Safety Stand Technology Co., Ltd. Address before: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Patentee before: Xiang Wu |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |