CN206211961U - A kind of latching circuit of touch-switch - Google Patents
A kind of latching circuit of touch-switch Download PDFInfo
- Publication number
- CN206211961U CN206211961U CN201621300807.8U CN201621300807U CN206211961U CN 206211961 U CN206211961 U CN 206211961U CN 201621300807 U CN201621300807 U CN 201621300807U CN 206211961 U CN206211961 U CN 206211961U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- switch
- touch
- circuit
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model discloses a kind of latching circuit of touch-switch, including the main electrical circuit being turned on and off is controlled by the first triode, the switching circuit of touch-switch trigger signal is received by the 3rd transistor base, is changed the enable loop of the second triode ON state according to the electric signal of switching circuit feedback；The second described triode makes the first triode change on or off state by conducting and the base level of shut-off the first triode of switching.Advantage is to send rear trigger signal to switching circuit after trigger switch is pressed, and the 3rd triode switchs to conducting state so as to change the base level of the second triode by off state.Second triode is changed into conducting state from off state makes the first transistor base level high by low turn, and being controlled device after the first triode ON just can be constantly in running order.The auto-lock function to being controlled device is realized, for the design space that frivolous electronic product provides touch-switch.
Description
Technical field
The utility model is related to a kind of electronic circuit, more particularly to a kind of latching circuit of touch-switch.
Background technology
With the development and technological progress of society, various electronic products and various consumer electronicses largely occur, enter into
In people's daily life and production work.Most electronic equipment is more light slim in order to be designed to, and switch is all used
Touch-switch.But level change can only just occur when triggering is pressed in touch-switch, it is impossible to continue automatic maintenance triggering
State.Using under some functions of needing lasting triggering, touch-switch is difficult to use as triggering device.
Utility model content
In order to solve the above-mentioned technical problem, the utility model purpose is to provide a kind of latching circuit of touch-switch.
The latching circuit of a kind of touch-switch described in the utility model, it is characterised in that including by the first triode control
Main electrical circuit, switching circuit, basis by the 3rd transistor base reception touch-switch trigger signal that system is turned on and off
The electric signal of switching circuit feedback and change the enable loop of the second triode ON state；The second described triode is by leading
The logical base level with shut-off the first triode of switching, makes the first triode change on or off state.
Preferably, described main electrical circuit is made up of power supply, controlled device, the first triode ground connection, the first triode base
Pole is used to receive the control level, radio pole and the colelctor electrode that enable loop for turning on main electrical circuit；
Described switching circuit is by the 7th resistance, the 9th resistance, the 3rd triode, touch-switch, the 3rd electric capacity and the 4th
Electric capacity is constituted, and power supply connects the 7th the 9th resistance by the 7th the 9th resistance and the 4th capacity earth, the 3rd transistor collector
Tie point, radio pole ground connection, base stage by touch-switch and the 4th capacity earth, the 3rd electric capacity be connected in parallel on the 3rd triode with
Between ground；3rd transistor collector is used for enabling loop output switching signal；
Described enable loop is made up of the 6th resistance, second resistance, the second triode and the second electric capacity, the second triode
Colelctor electrode connects the switching signal that power supply, radio pole are grounded, base stage passes through second resistance connection switching circuit by the 6th resistance
Output end, the second described transistor collector is used to enable level, base stage to the first transistor base output of main electrical circuit
Receive switching signal and adjust the second triode ON state.
The utility model advantage is to send rear trigger signal, the three or three pole to switching circuit after trigger switch is pressed
Pipe switchs to conducting state so as to change the base level of the second triode by off state.Second triode is changed into from off state
Conducting state makes the first transistor base level high by low turn, and device is controlled after the first triode ON just can be constantly in
Working condition.Once change the 3rd transistor base electricity after equally pressing touch-switch when needing and closing controlled device
Flat, the second transistor base level by height by the first transistor base level so that turn low.Entirely led after the shut-off of first triode
Electrical circuit is persistently remained turned-off, and realizes the auto-lock function to being controlled device.Touch-switch is provided for frivolous electronic product
Design space.
Brief description of the drawings
Fig. 1 is electrical block diagram of the present utility model.
Specific embodiment
The latching circuit of touch-switch described in the utility model, as shown in figure 1, including power supply BT1, resistance R1~R9,
Touch-switch SE1, triode Q1~Q3, electric capacity C1~C4 and controlled device.Device is controlled in embodiment with light emitting diode
LED1 replaces.Described power supply BT1 exports three branch roads：First article branch road sequentially passes through the 8th resistance R8, light emitting diode
LED1, the first triode Q1 colelctor electrodes and radio are extremely grounded afterwards, constitute main electrical circuit.Article 2 branch road sequentially passes through the 7th resistance
R7, the 9th resistance R9 and the 4th electric capacity C4 are grounded, and the 7th resistance R7 is connected the 3rd triode Q3 with the tie point of the 9th resistance R9
It is grounded by radio pole after colelctor electrode, base stage connects the 4th electric capacity C4 by touch-switch SW1, base stage is connect by the 3rd electric capacity C3
Ground, constitutes switching circuit.Article 3 branch road passes sequentially through the 6th resistance R6, the 4th resistance R4 and connects the 3rd transistor base, the
One electric capacity C1 is connected in parallel on the 4th resistance R4 two ends, and the 6th resistance R6 is connected the second triode Q2 collection with the tie point of the 4th resistance R4
It is grounded through radio pole after electrode, the second triode Q2 base stages connect the colelctor electrode of the 3rd triode Q3 by second resistance R2, the
Two electric capacity C2 are connected in parallel on second resistance R2 two ends, and composition enables loop.Described enable loop the second triode Q2 colelctor electrodes lead to
Cross the base stage that the 5th resistance R5 is connected the first triode of main electrical circuit Q1 with first resistor R1, the 5th resistance R5 and first resistor R1
Tie point be grounded by 3rd resistor R3.Wherein the base stage of the 3rd triode Q3 is that trigger signal receiving terminal, current collection are extremely cut
Signal output part is changed, the second triode Q2 current collections extremely enable signal output part.
The operation principle of circuit is：After circuit accesses power supply BT1, by the 6th resistance R6 and the 4th resistance R4 to the 3rd electricity
Hold C3 to be charged, while charging the 4th electric capacity C4 by the 7th resistance R7 and the 9th resistance R9；Due to the three or three pole
By the 3rd electric capacity C3 to ground, 3rd triode Q3 is not turned on pipe Q3 base stages when the 3rd electric capacity C3 does not have fully charged.4th electric capacity C4
During charging, the 7th resistance R7 and the 9th resistance R9 forms intrinsic standoff ratio, and the second triode Q2 is turned on because base stage is in high level,
So that the 3rd triode Q3 and the first triode Q1 base stages are low level, the 3rd triode Q3 and the first triode Q1 ends,
Thus LED1 will not be lighted when power supply BT1 is accessed.When pressing touch-switch SW1 moments, power supply BT1 by the 7th resistance R7 and
9th resistance R9 charges to the 3rd electric capacity C3, simultaneously because not having resistance to connect between the 3rd electric capacity C3 and the 4th electric capacity C4
Connect, the current potential of the 4th electric capacity C4 is applied directly in the 3rd triode Q3 base stages, the 3rd triode Q3 base stages are changed into high level and lead
Logical, so as to the second triode Q2 base levels are dragged down, the second triode Q2 cut-offs, the first triode Q1 base stages are for high level
Conducting, LED1 is lighted.Now the 4th electric capacity C4 is discharged by the 9th resistance R9 and the 3rd triode Q3.It is light when pressing again
Switch SW1 moments are touched, the 3rd triode Q3 base potentials drag down and ended by the 4th electric capacity C4, now the second triode Q2 is immediately
Conducting, so that the 3rd triode Q3 and the first triode Q1 cut-offs, LED1 extinguishings.So whenever pressing touch-switch SW1, second
The state of triode Q2 and the 3rd triode Q3 can all be exchanged, and reach auto-lock function, so as to control persistently lighting and putting out for LED1
Go out.
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the guarantor that should all belong to the utility model claim
Within the scope of shield.
Claims (2)
1. a kind of latching circuit of touch-switch, it is characterised in that including the main electricity being turned on and off by the control of the first triode
Loop, the switching circuit that touch-switch trigger signal is received by the 3rd transistor base, the telecommunications fed back according to switching circuit
Number and change the second triode ON state enable loop；The second described triode is by conducting and shut-off switching the one or three
The base level of pole pipe, makes the first triode change on or off state.
2. circuit according to claim 1, it is characterised in that described main electrical circuit is by power supply, controlled device, the one or three
Pole pipe ground connection composition, control level, radio pole and the colelctor electrode that the first transistor base is used to receive enable loop is used to turn on
Main electrical circuit；
Described switching circuit is by the 7th resistance, the 9th resistance, the 3rd triode, touch-switch, the 3rd electric capacity and the 4th electric capacity
Composition, power supply connects the company of the 7th the 9th resistance by the 7th the 9th resistance and the 4th capacity earth, the 3rd transistor collector
, by touch-switch and the 4th capacity earth, the 3rd electric capacity is connected in parallel on the 3rd triode with ground for contact, radio pole ground connection, base stage
Between；3rd transistor collector is used for enabling loop output switching signal；
Described enable loop is made up of the 6th resistance, second resistance, the second triode and the second electric capacity, the second triode current collection
Pole connects the switching signal output that power supply, radio pole are grounded, base stage passes through second resistance connection switching circuit by the 6th resistance
End, the second described transistor collector is used to enable the first transistor base output of main electrical circuit level, base stage reception
Switching signal adjusts the second triode ON state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300807.8U CN206211961U (en) | 2016-11-30 | 2016-11-30 | A kind of latching circuit of touch-switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300807.8U CN206211961U (en) | 2016-11-30 | 2016-11-30 | A kind of latching circuit of touch-switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206211961U true CN206211961U (en) | 2017-05-31 |
Family
ID=58750955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621300807.8U Active CN206211961U (en) | 2016-11-30 | 2016-11-30 | A kind of latching circuit of touch-switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206211961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303799A (en) * | 2021-05-21 | 2021-08-27 | 上海微创医疗机器人（集团）股份有限公司 | Basin bottom detection equipment based on non-contact switch |
| CN115955231A (en) * | 2022-12-14 | 2023-04-11 | 广州市保伦电子有限公司 | Self-locking switch circuit suitable for touch key |
-
2016
- 2016-11-30 CN CN201621300807.8U patent/CN206211961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303799A (en) * | 2021-05-21 | 2021-08-27 | 上海微创医疗机器人（集团）股份有限公司 | Basin bottom detection equipment based on non-contact switch |
| CN113303799B (en) * | 2021-05-21 | 2023-09-22 | 上海微创医疗机器人（集团）股份有限公司 | Basin bottom detection equipment based on non-contact switch |
| CN115955231A (en) * | 2022-12-14 | 2023-04-11 | 广州市保伦电子有限公司 | Self-locking switch circuit suitable for touch key |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204292204U (en) | A kind of magnetic induction electronic cigarette | |
| CN104812128B (en) | Can compatible dual control or the electronic switch for controlling mechanical switch wiring more | |
| CN206211961U (en) | A kind of latching circuit of touch-switch | |
| CN201936413U (en) | Active infrared anti-theft alarm apparatus | |
| CN104955251A (en) | Voltage detecting circuit and lamp | |
| CN202419432U (en) | Emergency lamp with charging indication circuit | |
| CN205124050U (en) | Mobile terminal and flashlight drive circuit thereof | |
| CN204761767U (en) | LED's automatic control drive circuit | |
| CN205249168U (en) | Light -operated switch circuit | |
| CN202957651U (en) | Double-channel constant-current charging circuit | |
| CN207729648U (en) | The dual-purpose burning torches of Dan Shuanhuo | |
| CN207638938U (en) | A kind of multi-functional OLED intelligent controls lighting device | |
| CN201039109Y (en) | Two-line energy-saving switch | |
| CN105428922B (en) | Multifunctional power socket circuit with LED desk lamp | |
| CN208797619U (en) | A kind of charging of novel belt is turned off the light functional circuit | |
| CN104105247B (en) | Lamp control circuit | |
| CN204424936U (en) | A kind of battery feed circuit | |
| CN209710395U (en) | A kind of switching device of multi-kind control | |
| CN204733427U (en) | Portable color-adjustable LED | |
| CN204681147U (en) | A kind of constant-current charging circuit of adjustable current | |
| CN204856372U (en) | Discharge protection circuit board is crossed to panel computer | |
| CN209046311U (en) | A kind of touch electric quantity of lithium battery display | |
| CN102957195B (en) | Battery charge controlling circuit | |
| CN202949098U (en) | Universal alternating current/direct current plug with lamp within wide voltage range | |
| CN208316368U (en) | A kind of Christmas tree LED light power control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |