CN107066012B - A kind of switching circuit and electronic equipment - Google Patents
A kind of switching circuit and electronic equipment Download PDFInfo
- Publication number
- CN107066012B CN107066012B CN201710456962.1A CN201710456962A CN107066012B CN 107066012 B CN107066012 B CN 107066012B CN 201710456962 A CN201710456962 A CN 201710456962A CN 107066012 B CN107066012 B CN 107066012B
- Authority
- CN
- China
- Prior art keywords
- switching tube
- circuit
- operating circuit
- base stage
- working power
- 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.)
- Active
Links
- 230000005611 electricity Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Keying Circuit Devices (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
This application discloses a kind of switching circuit and electronic equipments, wherein, the switching circuit controls the level state inputted to switching tube by base stage control module, to realize the control of the switch state of the switching tube, to realize the purpose of the connection status between control working power and operating circuit.Specifically, the switching tube conducting is controlled when the switch button of the operating circuit is in first state, to realize the connection of the working power and operating circuit, provides operating voltage for the operating circuit；The switching tube cut-off is controlled when the switch button is in the second state avoids unnecessary power wastage, and reduce the probability that operating circuit surprisingly leaks electricity to realize the connection for disconnecting the working power and operating circuit.
Description
Technical field
This application involves ON-OFF control circuit technical fields, more specifically to a kind of switching circuit and electronic equipment.
Background technique
Electronic equipment is generally made of working power and operating circuit, in the prior art, is closed even if electronic equipment is in
Closed state, working power and operating circuit can still keep connecting, and some elements in operating circuit still can consume electricity at this time
Amount, causes unnecessary waste；When even more serious, the working power and operating circuit that can not be disconnected may result in electricity
Sub- equipment is in the closed state, the case where operating circuit surprisingly leaks electricity.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of switching circuit and electronic equipment, to realize in switch electricity
When road is in close state, the purpose of working power and operating circuit is cut off, to avoid unnecessary power wastage, and is reduced
The probability surprisingly to leak electricity.
To realize the above-mentioned technical purpose, the embodiment of the invention provides following technical solutions:
A kind of switching circuit, for controlling the connection status between working power and operating circuit, the switching circuit packet
It includes: base stage control module, voltage output module and switching tube；Wherein,
The base stage control module is connect with the base stage of the switching tube, at the switch button of the operating circuit
To the base stage input low level of the switching tube when first state, so that the switching tube is connected, at the switch button
To the base stage input high level of the switching tube when the second state, so that the switching tube ends, the first state is institute
State the triggering state of switch button；
The input terminal of the voltage output module is connect with the collector of the switching tube, the voltage output module it is defeated
Outlet is connect with the input terminal of the operating circuit, for being mentioned in switching tube conducting by dividing to the operating circuit
For operating voltage；
The emitter of the switching tube is connect with the first output end of the working power.
Optionally, the base stage control module includes: first resistor；
One end of the first resistor is connect with the base stage of the switching tube, the other end respectively with the working power
Two output ends are connected with the switch button；
When the switch button is in first state, the second output terminal of the working power and the switch button connect
It connects.
Optionally, the base stage control module further include: second resistance；
One end of the second resistance is connected to the connecting node of the first resistor Yu the switch button, the other end and institute
State the second output terminal connection of working power.
Optionally, the voltage output module includes 3rd resistor and the 4th resistance；Wherein,
Input terminal of the one end of the 3rd resistor as the voltage output module, the other end and the 4th resistance connect
It connects, the output end as the voltage output module；
4th resistance is grounded far from described 3rd resistor one end.
Optionally, the switching tube is triode.
Optionally, the triode is PNP type triode.
A kind of electronic equipment, comprising: working power, operating circuit and switching circuit as described in any one of the above embodiments；Wherein,
The working power is connected with operating circuit by the switching circuit.
Optionally, the operating circuit is DC-DC circuit or low-dropout linear voltage-regulating circuit.
It can be seen from the above technical proposal that the embodiment of the invention provides a kind of switching circuit and electronic equipments, wherein
The switching circuit controls the level state inputted to switching tube by base stage control module, to realize the switch of the switching tube
The control of state, to realize the purpose of the connection status between control working power and operating circuit.Specifically, when described
The switch button of operating circuit controls the switching tube conducting when being in first state, to realize the working power and work electricity
The connection on road provides operating voltage for the operating circuit；The switch is controlled when the switch button is in the second state
Pipe cut-off avoids unnecessary power wastage, and reduce to realize the connection for disconnecting the working power and operating circuit
The probability that operating circuit surprisingly leaks electricity.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of electrical block diagram for switching circuit that one embodiment of the application provides；
Fig. 2 is a kind of electrical block diagram for switching circuit that another embodiment of the application provides；
Fig. 3 is a kind of electrical block diagram for switching circuit that another embodiment of the application provides；
Fig. 4 is a kind of electrical block diagram for switching circuit that the further embodiment of the application provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present application provides a kind of switching circuit, as shown in Figure 1, for control working power and operating circuit it
Between connection status, the switching circuit includes: base stage control module 100, voltage output module 200 and switching tube Q；Wherein,
The base stage control module 100 is connect with the base stage of the switching tube Q, for pressing in the switch of the operating circuit
To the base stage input low level of the switching tube Q when button is in first state, so that the switching tube Q is connected, in the switch
To the base stage input high level of the switching tube Q when button is in the second state, so that the switching tube Q ends, described first
State is the triggering state of the switch button；
The input terminal of the voltage output module 200 is connect with the collector of the switching tube Q, the voltage output module
200 output end is connect with the input terminal of the operating circuit, for passing through partial pressure to the work in switching tube Q conducting
Make circuit and operating voltage is provided；
The emitter of the switching tube Q is connect with the first output end of the working power.
The switching circuit controls the level state inputted to switching tube Q by base stage control module 100, described in realizing
The control of the switch state of switching tube Q, to realize the purpose of the connection status between control working power and operating circuit.
Specifically, the switching tube Q conducting is controlled, when the switch button of the operating circuit is in first state to realize the work
Make the connection of power supply and operating circuit, provides operating voltage for the operating circuit；When the switch button is in the second state
When control switching tube Q cut-off, to realize the connection for disconnecting the working power and operating circuit, avoid unnecessary electricity
Power waste, and reduce the probability that operating circuit surprisingly leaks electricity.
On the basis of the above embodiments, one embodiment of the application provides a kind of feasible base stage control module
100 composition, as shown in Fig. 2, the base stage control module 100 includes: first resistor R1；
One end of the first resistor R1 is connect with the base stage of the switching tube Q, the other end respectively with the working power
Second output terminal connected with the switch button；
When the switch button is in first state, the second output terminal of the working power and the switch button connect
It connects.
It should be noted that due to the presence of the first resistor R1, when the switch button is in first state, institute
The second output terminal for stating working power is connect with the switch button, and the switching tube Q is shorted at this time, base stage input voltage
It is zero, the switching tube Q is in the conductive state at this time, to realize the purpose for connecting the working power and operating circuit, work
The voltage that power supply provides exports after the partial pressure by the voltage output module 200.
In the present embodiment, the switching tube Q is triode, and more specifically, the triode is PNP type triode,
It is in the conductive state i.e. as the voltage of emitter 0.7V bigger than the voltage of base stage.
However when the second output terminal of the working power is connect with the switch button, it is possible that electric current is excessive
The problem of, therefore, in another embodiment of the application, as shown in figure 3, the base stage control module 100 further include: second
Resistance R2；
An end of the second resistance R2 is connected to the connecting node of the first resistor R1 and the switch button, the other end
It is connect with the second output terminal of the working power.
The second resistance R2 plays the role of current limliting, avoid second output terminal when the working power with it is described
When switch button connects, it is possible that the problem that electric current is excessive.PWKEY in Fig. 3 indicates the input terminal of the switch button.
On the basis of above-described embodiment, another embodiment of the application provides a kind of feasible voltage output module
200 composition, as shown in figure 4, the voltage output module 200 includes 3rd resistor R3 and the 4th resistance R4；Wherein,
Input terminal of the one end of the 3rd resistor R3 as the voltage output module 200, the other end and the described 4th
Resistance R4 connection, the output end as the voltage output module 200；
The 4th resistance R4 is grounded far from the one end the 3rd resistor R3.
With reference to switching circuit shown in Fig. 4, the voltage output module 200 is opened when the switching tube Q is connected to described
The operating voltage that powered-down road provides meets following formula；
Wherein, BAT_EN indicates what the voltage output module 200 exported
Operating voltage, BAT_IN are the voltage of working power output, and value is equal to BAT-IN1 or BAT-IN2；R3 is third electricity
The resistance value of R3 is hindered, R4 is the resistance value of the 4th resistance R4.
By above formula it is found that the value of the operating voltage of 200 final output of the voltage output module is by work electricity
The resistance value co-determination of the voltage, 3rd resistor R3 and the 4th resistance R4 of source output, in practical application, adjusting can be passed through
Above three parameter provides the purpose of different operating voltages to operating circuit to realize.
Correspondingly, the embodiment of the present application also provides a kind of electronic equipment, including working power, operating circuit and as above-mentioned
Switching circuit described in any embodiment；Wherein,
The working power is connected with operating circuit by the switching circuit.
The type of the operating circuit includes but is not limited to DC-DC circuit, voltage difference linear voltage-stabilizing circuit (low
Dropout regulator, LDO) and AC-DC circuit.
In conclusion the embodiment of the present application provides a kind of switching circuit and electronic equipment, wherein the switching circuit is logical
It crosses base stage control module 100 and controls the level state inputted to switching tube Q, to realize the control of the switch state of the switching tube Q
System, to realize the purpose of the connection status between control working power and operating circuit.Specifically, when the operating circuit
Switch button the switching tube Q conducting is controlled when being in first state, to realize the company of the working power and operating circuit
It connects, provides operating voltage for the operating circuit；The switching tube Q is controlled when the switch button is in the second state to cut
Only, to realize the connection for disconnecting the working power and operating circuit, unnecessary power wastage is avoided, and reduce work
Make the probability that circuit surprisingly leaks electricity.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of switching circuit, which is characterized in that described to open for controlling the connection status between working power and operating circuit
Powered-down road includes: base stage control module, voltage output module and switching tube；Wherein,
The base stage control module is connect with the base stage of the switching tube, is in for the switch button in the operating circuit
To the base stage input low level of the switching tube when one state, so that the switching tube is connected, the is in the switch button
To the base stage input high level of the switching tube when two-state, so that the switching tube ends, the first state is described opens
Close the triggering state of button；
The input terminal of the voltage output module is connect with the collector of the switching tube, the output end of the voltage output module
It is connect with the input terminal of the operating circuit, for providing work to the operating circuit by partial pressure in switching tube conducting
Make voltage；
The emitter of the switching tube is connect with the first output end of the working power；
The base stage control module includes: first resistor；
One end of the first resistor is connect with the base stage of the switching tube, and the other end is defeated with the second of the working power respectively
Outlet is connected with the switch button；
When the switch button is in first state, the second output terminal of the working power is connect with the switch button；
The base stage control module further include: second resistance；
One end of the second resistance is connected to the connecting node of the first resistor Yu the switch button, the other end and the work
Make the second output terminal connection of power supply；
The voltage output module includes 3rd resistor and the 4th resistance；Wherein,
Input terminal of the one end of the 3rd resistor as the voltage output module, the other end are connect with the 4th resistance,
Output end as the voltage output module；
4th resistance is grounded far from described 3rd resistor one end.
2. switching circuit according to claim 1, which is characterized in that the switching tube is triode.
3. switching circuit according to claim 2, which is characterized in that the triode is PNP type triode.
4. a kind of electronic equipment characterized by comprising working power, operating circuit and as described in claim any one of 1-3
Switching circuit；Wherein,
The working power is connected with operating circuit by the switching circuit.
5. electronic equipment according to claim 4, which is characterized in that the operating circuit is DC-DC circuit or low voltage difference
Linear voltage-stabilizing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456962.1A CN107066012B (en) | 2017-06-16 | 2017-06-16 | A kind of switching circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456962.1A CN107066012B (en) | 2017-06-16 | 2017-06-16 | A kind of switching circuit and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107066012A CN107066012A (en) | 2017-08-18 |
| CN107066012B true CN107066012B (en) | 2018-12-28 |
Family
ID=59595572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710456962.1A Active CN107066012B (en) | 2017-06-16 | 2017-06-16 | A kind of switching circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107066012B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3408926A1 (en) * | 1984-03-12 | 1985-09-19 | INSTA Elektro GmbH & Co KG, 5880 Lüdenscheid | Bounce-free interference-proof circuit arrangement for operating an electronic alternating-current switch |
| CN101621290B (en) * | 2008-07-01 | 2012-09-05 | 深圳Tcl新技术有限公司 | Light touch switch type key circuit |
| CN101625588B (en) * | 2008-07-08 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Supply circuit of PWM controller |
| CN103676746B (en) * | 2013-12-20 | 2016-08-17 | 青岛歌尔声学科技有限公司 | A kind of switching on and shutting down control circuit and electronic equipment |
| CN106357255A (en) * | 2016-11-02 | 2017-01-25 | 于天睿 | Light-touch key type electronic switch of small direct-current motor |
| CN206991149U (en) * | 2017-06-16 | 2018-02-09 | 上海思依暄机器人科技股份有限公司 | A kind of on-off circuit and electronic equipment |
-
2017
- 2017-06-16 CN CN201710456962.1A patent/CN107066012B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107066012A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103326458B (en) | A kind of external power source and battery powered power supply switch circuit | |
| CN107943182B (en) | Band gap reference start-up circuit | |
| CN106972769A (en) | A kind of light current electrical load overvoltage crowbar | |
| WO2016060541A1 (en) | Overvoltage protection | |
| CN103365332B (en) | Overcurrent protection circuit and power supply device | |
| CN106786353A (en) | A kind of overvoltage crowbar | |
| CN105762781A (en) | Surge current control circuit and power supply device | |
| CN210745102U (en) | Bidirectional electronic switch and power supply circuit | |
| CN107706906A (en) | Anti-back flow circuit and power supply redundancy circuit | |
| CN103702460B (en) | The controlled heater circuit of a kind of Simple small power | |
| CN209233535U (en) | A kind of low-power consumption power supply circuit and electronic equipment | |
| CN111224374B (en) | Protective circuit | |
| CN105929886B (en) | Reference voltage circuit and electronic equipment | |
| CN109347466B (en) | Switching circuit and electronic equipment | |
| CN107066012B (en) | A kind of switching circuit and electronic equipment | |
| CN206991149U (en) | A kind of on-off circuit and electronic equipment | |
| CN101626201B (en) | Switch power supply circuit | |
| CN207967905U (en) | A kind of current foldback circuit | |
| CN214205335U (en) | Voltage adjusting circuit of switching power supply and power supply system | |
| CN104714581B (en) | Based on the star loaded camera power supply system of transformer | |
| CN105515357A (en) | DCDC current-limiting circuit | |
| CN201594730U (en) | Abnormal high voltage protection circuit for power inputting | |
| CN219420370U (en) | Power supply switching circuit | |
| CN202423180U (en) | Control device for closing coil of breaker | |
| CN216751301U (en) | Power supply switching circuit and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201207 Shanghai City, Pudong New Area Chinese (Shanghai) free trade zone fanchun Road No. 400 Building 1 layer 3 Applicant after: SHANGHAI SIYIXUAN ROBOT TECHNOLOGY Co.,Ltd. Address before: 200233 room F6, room 4, building No. 34, Guiping Road, Xuhui District, Xuhui District, Shanghai Applicant before: SHANGHAI SIYIXUAN ROBOT TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240530 Address after: 300110 Tianjin Science and Technology Square (Tiankai Park) 5-1201, West Side of Science and Technology East Road, Nankai District, Tianjin Patentee after: Tiankai Zhichuang (Tianjin) 3D Printing Co.,Ltd. Country or region after: China Address before: 201207 Pudong New Area, Shanghai, China (Shanghai) free trade trial area, No. 3, 1 1, Fang Chun road. Patentee before: SHANGHAI SIYIXUAN ROBOT TECHNOLOGY Co.,Ltd. Country or region before: China |