CN204832859U - Electromechanical way of electronic product automatic switch - Google Patents
Electromechanical way of electronic product automatic switch Download PDFInfo
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- CN204832859U CN204832859U CN201520492054.4U CN201520492054U CN204832859U CN 204832859 U CN204832859 U CN 204832859U CN 201520492054 U CN201520492054 U CN 201520492054U CN 204832859 U CN204832859 U CN 204832859U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses an electromechanical way of electronic product automatic switch, including chip U1, resistance R1, key switch S1, triode Q1 and electric capacity C1, the key switch S1 one end VCC that connects respectively, electric capacity C1, chip U1 pin 14, resistance R3 and resistance R4, the electric capacity C1 other end is connecting resistance R1 respectively, ground resistance R2, the chip U1 pin 6 and the key switch S1 other end, triode Q1 base is connected to the resistance R1 other end, anodal and the ground connection of diode D1 is connected to triode Q1 projecting pole, triode Q1 collecting electrode is connected respectively to diode D1 negative pole, the resistance R3 other end and microprocessor's STATE foot. The utility model discloses electromechanical way of electronic product automatic switch only uses a chip U1 to design a simple structure, and switching on and shutting down circuit that convenient to use is reliable is with low costs, small, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of automatic switching circuit, specifically a kind of electronic product automatic switching circuit.
Background technology
Economize on electricity is the required primary factor considered of various battery supply set, for preventing user from forgetting shutdown, some equipment have employed automatic shutdown circuitry, in addition, an on/off key is used to control to open or power cutoff in much equipment, even if microprocessor (microprocessor) processes key procedure, when button is pressed, system also can turn off, cause the loss of significant data, carrying out structure simplification to on/off circuit in addition, make device miniaturization, is also the emphasis of research in industry.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, and easy to use and reliable electronic product automatic switching circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of electronic product automatic switching circuit, comprise chip U1, resistance R1, keyswitch S1, triode Q1 and electric capacity C1, described keyswitch S1 one end connects power supply VCC respectively, electric capacity C1, chip U1 pin 14, resistance R3 and resistance R4, the electric capacity C1 other end is contact resistance R1 respectively, stake resistance R2, chip U1 pin 6 and the keyswitch S1 other end, resistance R1 other end connecting triode Q1 base stage, triode Q1 emitter connects diode D1 positive pole and ground connection, diode D1 negative pole is connecting triode Q1 collector respectively, the STATE pin of the resistance R3 other end and microprocessor, the described resistance R4 other end is connecting triode Q2 collector and power supply chip MAX1626 pin SHDN respectively, triode Q2 grounded emitter, triode Q2 base stage connects chip U1 pin 1 by resistance R5, chip U1 pin 5 connects chip U1 pin 3 respectively, chip U1 pin 7 and resistance R6 ground connection, the resistance R6 other end connects chip U1 pin 4 respectively, triode Q3 collector and resistance R7, triode Q3 grounded emitter, triode Q3 base stage connects the POWERCTL of microprocessor, the resistance R7 other end connects power supply VCC.
As further program of the utility model: described chip U1 model is CD4013.
As the utility model further scheme: described diode D1 is voltage stabilizing diode.
Compared with prior art, the beneficial effects of the utility model are: it is simple that the utility model electronic product automatic switching circuit only uses a chip U1 to devise a kind of structure, easy to use and reliable on/off circuit, and cost is low, volume is little, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of electronic product automatic switching circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of electronic product automatic switching circuit, comprise chip U1, resistance R1, keyswitch S1, triode Q1 and electric capacity C1, keyswitch S1 one end connects power supply VCC respectively, electric capacity C1, chip U1 pin 14, resistance R3 and resistance R4, the electric capacity C1 other end is contact resistance R1 respectively, stake resistance R2, chip U1 pin 6 and the keyswitch S1 other end, resistance R1 other end connecting triode Q1 base stage, triode Q1 emitter connects diode D1 positive pole and ground connection, diode D1 negative pole is connecting triode Q1 collector respectively, the STATE pin of the resistance R3 other end and microprocessor, the resistance R4 other end is connecting triode Q2 collector and power supply chip MAX1626 pin SHDN respectively, triode Q2 grounded emitter, triode Q2 base stage connects chip U1 pin 1 by resistance R5, chip U1 pin 5 connects chip U1 pin 3 respectively, chip U1 pin 7 and resistance R6 ground connection, the resistance R6 other end connects chip U1 pin 4 respectively, triode Q3 collector and resistance R7, triode Q3 grounded emitter, triode Q3 base stage connects the POWERCTL of microprocessor, the resistance R7 other end connects power supply VCC.
Chip U1 model is CD4013.
Diode D1 is voltage stabilizing diode.
Principle of work of the present utility model is: refer to Fig. 1, wherein U1 is double D trigger CD4013, external power supply VCC, the Q of chip U1 exports by after R5, R4 and NPN type triode Q2 reverse drive, be connected with the switch pin of power supply chip MAX1626, the powered-down when SHDN pin is high, opens system power supply when SHDN pin is low.
Homing position type keyswitch S1 is system power supply ON/OFF key.C1 and R2 forms RC network, makes after S1 presses, and ensures that R has be in high level certain time delay, D, CLK termination input power ground of CD4013, ensure that it is in low level, set pin R one end is by resistance R3 ground connection, and the other end is connected with the I/O mouth of microprocessor by triode Q3.The right-hand member of S1 is connected with R1, and control Q1 is open-minded.Connect voltage stabilizing diode D1 between the collector of Q1 and ground, the output of voltage stabilizing diode D1 is connected with the I/O mouth (STATE pin) of microprocessor.
The core devices of on/off circuit is a D flip-flop, and model is CD4013.No matter which kind of state pin CLK is, when S is 0, exporting Q is 0; When R is 0, exporting Q is 1; And when R, S are 1, exporting Q is 1; When R and S is 0, as long as pin CLK does not produce rising edge pulse, export Q and can keep last output state.State retention performance when this circuit utilizes R, S to be zero is just to realize machine open/close function.
When pressing S1, S and high level are connected, S=1.Work as R=1, during S=1, export Q and should stablize output 1, after triode is reverse, power control pin SHDN is low level, opens system power supply.I/O pin can be set to high level when carrying out initialization by usual microprocessor, due to the delayed-action of RC network, can ensure after S1 presses S end about have 120ms be in high level (ensure start stable condition: RC network time delay > system power-on reset and by stable condition for POWERCTL be 1 time).Reverse through triode Q3, now S=1, R=0, Q hold output 1, and system power supply is in open mode.
The state of STATE pin is read after microprocessor postpones.If now STATE is low level, then confirm Q1 conducting, S1 once pressed, and confirmed that user's boot program normally runs.If now STATE is high level, then show that Q1 ends, starting-up signal is misoperation, and program performs shutdown programm.
When after the time delay of RC network, S end transfers 0 to by 1, now S=0, R=0, and now export Q and should maintain last output state, namely keeping system opens power supply status.
As economize on electricity product, if system does not work at the appointed time, system can proceed to shutdown programm automatically, after preservation significant data, and automatic closing system.
When user manually shuts down, when pressing S1, Q1 opens, and the state of STATE changes low level into by high level, after microprocessor detects the state change of STATE, again detecting STATE state through time delay, as being still low level, then confirming as shutdown command, program will preserve significant data, close all interruptions, then I/O pin POWERCTL is set to low level, enters circular wait off-mode.Now, I/O mouth state makes trigger R=1 after Q3 is anti-phase, and S=0, Q end should stablize output 0, and after triode Q2 reverse drive, pin SHDN is high level, shutdown system power supply.
After power supply chip is closed, along with electric capacity C1 discharges, the supply voltage of microprocessor constantly declines, and pin POWERCTL becomes indeterminate state, and no matter now R terminal potential is high or low, and exporting Q is all low level, and the stable system that makes is in off-mode.
Along with electric capacity C1 continues electric discharge, I/O pin POWER_CTL stabilizes to low level, now chip U1 pin R=1, S=0, and it is low level that stable maintenance exports Q, ensures the stable shutoff of system power supply.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. an electronic product automatic switching circuit, comprise chip U1, resistance R1, keyswitch S1, triode Q1 and electric capacity C1, it is characterized in that, described keyswitch S1 one end connects power supply VCC respectively, electric capacity C1, chip U1 pin 14, resistance R3 and resistance R4, the electric capacity C1 other end is contact resistance R1 respectively, stake resistance R2, chip U1 pin 6 and the keyswitch S1 other end, resistance R1 other end connecting triode Q1 base stage, triode Q1 emitter connects diode D1 positive pole and ground connection, diode D1 negative pole is connecting triode Q1 collector respectively, the STATE pin of the resistance R3 other end and microprocessor, the described resistance R4 other end is connecting triode Q2 collector and power supply chip MAX1626 pin SHDN respectively, triode Q2 grounded emitter, triode Q2 base stage connects chip U1 pin 1 by resistance R5, chip U1 pin 5 connects chip U1 pin 3 respectively, chip U1 pin 7 and resistance R6 ground connection, the resistance R6 other end connects chip U1 pin 4 respectively, triode Q3 collector and resistance R7, triode Q3 grounded emitter, triode Q3 base stage connects the POWERCTL of microprocessor, the resistance R7 other end connects power supply VCC.
2. electronic product automatic switching circuit according to claim 1, is characterized in that, described chip U1 model is CD4013.
3. electronic product automatic switching circuit according to claim 1, is characterized in that, described diode D1 is voltage stabilizing diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492054.4U CN204832859U (en) | 2015-07-09 | 2015-07-09 | Electromechanical way of electronic product automatic switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492054.4U CN204832859U (en) | 2015-07-09 | 2015-07-09 | Electromechanical way of electronic product automatic switch |
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| Publication Number | Publication Date |
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| CN204832859U true CN204832859U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520492054.4U Expired - Fee Related CN204832859U (en) | 2015-07-09 | 2015-07-09 | Electromechanical way of electronic product automatic switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393272A (en) * | 2017-08-11 | 2017-11-24 | 过成康 | A kind of automation remote control relay circuit |
-
2015
- 2015-07-09 CN CN201520492054.4U patent/CN204832859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393272A (en) * | 2017-08-11 | 2017-11-24 | 过成康 | A kind of automation remote control relay circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |