CN105720809A - Switching control circuit for single chip microcomputer - Google Patents
Switching control circuit for single chip microcomputer Download PDFInfo
- Publication number
- CN105720809A CN105720809A CN201610192815.3A CN201610192815A CN105720809A CN 105720809 A CN105720809 A CN 105720809A CN 201610192815 A CN201610192815 A CN 201610192815A CN 105720809 A CN105720809 A CN 105720809A
- Authority
- CN
- China
- Prior art keywords
- chip microcomputer
- resistance
- audion
- control circuit
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a switching control circuit for a single chip microcomputer. The switching control circuit comprises a resistor R1, a light emitting diode (LED), a key switch SB, a capacitor C1, a diode D1 and a triode VT1, wherein one end of the resistor R1 is connected with a power supply VCC and the transmitting electrode of a triode VT2 separately; the base electrode of the triode VT2 is connected with the resistor R1 and a resistor R2 separately while the other end of the resistor R2 is connected with the positive electrode of the LED and the key switch SB separately; the negative electrode of the LED is connected with the collector electrode of a triode VT3; the base electrode of the triode VT3 is connected with a resistor R4; and the other end of the resistor R4 is connected with a resistor R3, the capacitor C1 and the IO2 port of the single chip microcomputer. According to the switching control circuit for the single chip microcomputer provided by the invention, the key switch SB is matched with multiple triodes to be used as the power-on and power-off control elements of the single chip microcomputer; the circuit structure is quite simple; and in addition, the switching control circuit can effectively control the power supply of the single chip microcomputer and can realize zero stand-by power consumption.
Description
Technical field
The present invention relates to a kind of on-off circuit, specifically a kind of single-chip microcomputer ON-OFF control circuit.
Background technology
Switching Power Supply is to utilize modern power electronics technology, control the time ratio that switching tube turns on and off, maintain a kind of power supply of regulated output voltage, Switching Power Supply is generally made up of pulse width modulation control single chip computer and MOSFET, development and innovation along with Power Electronic Technique so that switch power technology is also innovated constantly.At present, Switching Power Supply is widely used almost all of electronic equipment with small-sized, light weight and high efficiency feature, it is that current electronics and information industry develops rapidly indispensable a kind of power mode, and single-chip microcomputer is as the requisite control element of the miniature control of modern society, its power switch controls the emphasis being always up in industry studying, in existing a lot of Single Chip Microcomputer (SCM) system on-off circuit, it is impossible to accomplish to complete switch off power supply, it is achieved Zero-power-consumption standby.
Summary of the invention
It is an object of the invention to provide a kind of single-chip microcomputer ON-OFF control circuit, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of single-chip microcomputer ON-OFF control circuit, including resistance R1, LED, key switch SB, electric capacity C1, diode D1 and audion VT1, described resistance R1 one end connects power supply VCC and audion VT2 emitter stage respectively, audion VT2 base stage connects resistance R1 and resistance R2 respectively, the resistance R2 other end is connecting luminous diode LED positive pole and key switch SB respectively, LED negative pole connecting triode VT3 colelctor electrode, audion VT3 base stage connects resistance R4, the resistance R4 other end connects resistance R3 respectively, electric capacity C1 and single-chip microcomputer IO2 port, the electric capacity C1 other end connects the resistance R3 other end and diode D1 negative pole respectively, diode D1 positive pole distinguishes connecting triode VT3 emitter stage and audion VT1 emitter stage ground connection, audion VT1 base stage connects the key switch SB other end, audion VT1 colelctor electrode connects single-chip microcomputer IO1 port, described audion VT2 colelctor electrode connects output end vo by Voltage stabilizing module.
As the further scheme of the present invention: described Voltage stabilizing module adopts three terminal regulator to control.
As the present invention further scheme: described diode D1 is Zener diode.
Compared with prior art, the invention has the beneficial effects as follows: single-chip microcomputer ON-OFF control circuit of the present invention is by using key switch SB to coordinate multiple audions to power on as single-chip microcomputer and the control element of dead electricity, circuit structure is very simple, effectively microcontroller power supply can be controlled, it is achieved standby zero-power-consumption.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of single-chip microcomputer ON-OFF control circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Refer to Fig. 1, in the embodiment of the present invention, a kind of single-chip microcomputer ON-OFF control circuit, including resistance R1, LED, key switch SB, electric capacity C1, diode D1 and audion VT1, described resistance R1 one end connects power supply VCC and audion VT2 emitter stage respectively, audion VT2 base stage connects resistance R1 and resistance R2 respectively, the resistance R2 other end is connecting luminous diode LED positive pole and key switch SB respectively, LED negative pole connecting triode VT3 colelctor electrode, audion VT3 base stage connects resistance R4, the resistance R4 other end connects resistance R3 respectively, electric capacity C1 and single-chip microcomputer IO2 port, the electric capacity C1 other end connects the resistance R3 other end and diode D1 negative pole respectively, diode D1 positive pole distinguishes connecting triode VT3 emitter stage and audion VT1 emitter stage ground connection, audion VT1 base stage connects the key switch SB other end, audion VT1 colelctor electrode connects single-chip microcomputer IO1 port, described audion VT2 colelctor electrode connects output end vo by Voltage stabilizing module；Described Voltage stabilizing module adopts three terminal regulator to control；Described diode D1 is Zener diode.
The operation principle of the present invention is: refers to Fig. 1, SB and presses moment, and VT2, VT1 turn on, and output end vo output galvanic current pressure is powered to single-chip microcomputer；After single-chip microcomputer work, carrying out I/O port initialization at first, IO1 is set to input state, enables internal pull-up；IO2 is set to output state, exports high level, at this moment VT2, VT3 conducting, and LED is luminous, Voltage stabilizing module can normal operation, single-chip microcomputer enters duty；When SB presses again, detection single-chip microcomputer IO1 port level is low, and single-chip microcomputer makes IO2 output low level, and VT2, VT3 are not turned on, and now Voltage stabilizing module input voltage is almost 0, and single-chip microcomputer does not work, and Single Chip Microcomputer (SCM) system is closed.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when without departing substantially from the spirit of the present invention or basic feature, it is possible to realize the present invention in other specific forms.Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the invention rather than described above limits, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in the present invention.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a single-chip microcomputer ON-OFF control circuit, including resistance R1, LED, key switch SB, electric capacity C1, diode D1 and audion VT1, it is characterized in that, described resistance R1 one end connects power supply VCC and audion VT2 emitter stage respectively, audion VT2 base stage connects resistance R1 and resistance R2 respectively, the resistance R2 other end is connecting luminous diode LED positive pole and key switch SB respectively, LED negative pole connecting triode VT3 colelctor electrode, audion VT3 base stage connects resistance R4, the resistance R4 other end connects resistance R3 respectively, electric capacity C1 and single-chip microcomputer IO2 port, the electric capacity C1 other end connects the resistance R3 other end and diode D1 negative pole respectively, diode D1 positive pole distinguishes connecting triode VT3 emitter stage and audion VT1 emitter stage ground connection, audion VT1 base stage connects the key switch SB other end, audion VT1 colelctor electrode connects single-chip microcomputer IO1 port, described audion VT2 colelctor electrode connects output end vo by Voltage stabilizing module.
2. single-chip microcomputer ON-OFF control circuit according to claim 1, it is characterised in that described Voltage stabilizing module adopts three terminal regulator to control.
3. single-chip microcomputer ON-OFF control circuit according to claim 1, it is characterised in that described diode D1 is Zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192815.3A CN105720809A (en) | 2016-03-23 | 2016-03-23 | Switching control circuit for single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192815.3A CN105720809A (en) | 2016-03-23 | 2016-03-23 | Switching control circuit for single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105720809A true CN105720809A (en) | 2016-06-29 |
Family
ID=56158368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610192815.3A Pending CN105720809A (en) | 2016-03-23 | 2016-03-23 | Switching control circuit for single chip microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105720809A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052047A (en) * | 2018-01-17 | 2018-05-18 | 攀枝花学院 | Microcontroller automatic shutdown circuitry |
| CN109861677A (en) * | 2019-01-21 | 2019-06-07 | 聂奇隆 | A kind of Intelligent Single-Chip Based switching circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203460711U (en) * | 2013-09-11 | 2014-03-05 | 湖北三江航天险峰电子信息有限公司 | Electric vehicle meter |
| CN203813401U (en) * | 2014-04-24 | 2014-09-03 | 大连电力勘察设计院有限公司 | High reliability characterized theft prevention small scale breaker for corridor disposed induction light |
| CN204305440U (en) * | 2015-01-21 | 2015-04-29 | 邵晓曜 | Infrared induction LED switch control device |
| CN204836646U (en) * | 2015-01-12 | 2015-12-02 | 金华谊昇光电有限公司 | Chargeable LED lamp decoration intelligence actuating system |
| CN204928784U (en) * | 2015-09-16 | 2015-12-30 | 成都锐奕信息技术有限公司 | Can realize turn -offing completely switching on and shutting down circuit of power |
-
2016
- 2016-03-23 CN CN201610192815.3A patent/CN105720809A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203460711U (en) * | 2013-09-11 | 2014-03-05 | 湖北三江航天险峰电子信息有限公司 | Electric vehicle meter |
| CN203813401U (en) * | 2014-04-24 | 2014-09-03 | 大连电力勘察设计院有限公司 | High reliability characterized theft prevention small scale breaker for corridor disposed induction light |
| CN204836646U (en) * | 2015-01-12 | 2015-12-02 | 金华谊昇光电有限公司 | Chargeable LED lamp decoration intelligence actuating system |
| CN204305440U (en) * | 2015-01-21 | 2015-04-29 | 邵晓曜 | Infrared induction LED switch control device |
| CN204928784U (en) * | 2015-09-16 | 2015-12-30 | 成都锐奕信息技术有限公司 | Can realize turn -offing completely switching on and shutting down circuit of power |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052047A (en) * | 2018-01-17 | 2018-05-18 | 攀枝花学院 | Microcontroller automatic shutdown circuitry |
| CN109861677A (en) * | 2019-01-21 | 2019-06-07 | 聂奇隆 | A kind of Intelligent Single-Chip Based switching circuit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160629 |