CN204272070U - A kind of touch mode alarm switching circuit - Google Patents
A kind of touch mode alarm switching circuit Download PDFInfo
- Publication number
- CN204272070U CN204272070U CN201420628967.XU CN201420628967U CN204272070U CN 204272070 U CN204272070 U CN 204272070U CN 201420628967 U CN201420628967 U CN 201420628967U CN 204272070 U CN204272070 U CN 204272070U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- electric capacity
- emitter
- base stage
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a kind of touch mode alarm switching circuit, this circuit comprises Touching electrode, triode VT1, VT2, VT3, VT4, electric capacity C1, C2, resistance R1, R2, R3, loud speaker; Described Touching electrode is connected with one end of resistance R1, the other end of resistance R1 is connected with the collector electrode of triode VT1, the emitter of triode VT1 is connected with power supply, the other end of resistance R1 is also connected with the base stage of triode VT2, the collector electrode of triode VT2 is connected with the base stage of triode VT1, the emitter of triode VT2 is connected with one end of electric capacity C1, the other end ground connection of electric capacity C1.The utility model adopts VT1, VT2 to form touch simulation thyristor circuit, and VT3, VT4 are complementary type low-frequency oscillator, make that whole circuit has auto-lock function, trigger sensitivity is high, very unique, and have practicality.
Description
Technical field
The utility model relates to switching circuit field, particularly, relates to a kind of touch mode alarm switching circuit.
Background technology
Soft-touch control is the emerging product of one of development in science and technology progress.It generally refers to a kind of switch on wall of application touch sensible chip concept design, is the regeneration product of traditional mechanical button type wall switch.Can realize the advantage that soft-touch control that is more intelligent, more convenient operation has traditional switch incomparable, be popular a kind of decorative switch of current family product.
It is more that soft-touch control is applied in floor passage, but the touch mode alarm switching circuit having auto-lock function, trigger sensitivity high is but seldom mentioned.The purpose of this utility model is just to provide a kind ofly can have the high touch mode alarm switching circuit of auto-lock function, trigger sensitivity.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of touch mode alarm switching circuit, this switching circuit adopts VT1, VT2 to form touch simulation thyristor circuit, VT3, VT4 are complementary type low-frequency oscillator, make that whole circuit has auto-lock function, trigger sensitivity is high, very unique, and there is practicality.
The technical scheme in the invention for solving the above technical problem is:
A kind of touch mode alarm switching circuit, comprises Touching electrode, triode VT1, VT2, VT3, VT4, electric capacity C1, C2, resistance R1, R2, R3, loud speaker;
Described Touching electrode is connected with one end of resistance R1, the other end of resistance R1 is connected with the collector electrode of triode VT1, the emitter of triode VT1 is connected with power supply, the other end of resistance R1 is also connected with the base stage of triode VT2, the collector electrode of triode VT2 is connected with the base stage of triode VT1, the emitter of triode VT2 is connected with one end of electric capacity C1, the other end ground connection of electric capacity C1, the emitter of triode VT2 is also connected with the emitter of triode VT4, the emitter of triode VT2 is also connected with one end of resistance R2, the other end of resistance R2 is connected with one end of electric capacity C2, the other end of electric capacity C2 is connected with one end of resistance R3, the other end of resistance R3 is connected with the base stage of triode VT4, the collector electrode of triode VT4 is connected with one end of loud speaker, the other end ground connection of loud speaker, the other end of resistance R2 is also connected with the base stage of triode VT3, and the collector electrode of triode VT3 is connected with the base stage of triode VT4, the grounded emitter of triode VT3.
Thinking of the present utility model is: this circuit design is unique, and it has auto-lock function, once after staff touching, loud speaker will send alarm sound continuously, till the relevant personnel cut off the electricity supply.Circuit is also very simple, but trigger sensitivity is high.VT1, VT2 form touch simulation thyristor circuit, and VT3, VT4 are complementary type low-frequency oscillator.At ordinary times, simulation thyristor turns off, and VT3, VT4 failure of oscillation is noiseless.When staff touching Touching electrode, the noise signal of human body sensing injects the base stage of VT2 through R1, exported by collector electrode after amplifying, feed back to the base stage of VT1, amplify through VT1 again, amplified signal is exported by collector electrode and is input to the base stage of VT2, amplify again ... go round and begin again, so strong positive feedback makes the rapid conducting of VT1, VT2 saturated, once enter conducting state, Touching electrode just loses control action, just look like unidirectional thyristor once conducting, its gate pole just loses control action, except non-severed anode supply.This circuit is also like this, as long as staff one touches, VT1, VT2 just rapid conducting, VT3, VT4 starting of oscillation is reported to the police, and as wanted circuit to quit work, only has cut-out circuit work power.
This circuit has very high trigger sensitivity, therefore also can be used as touching warner, actual can connect a key switch, as the alert switch of solution between the base stage of VT2 and emitter when using, press the emitter junction of this switch because of short circuit VT2, simulation thyristor VT1, VT2 can turn off immediately.VT1, VT2 require that leakage current is less as far as possible, otherwise circuit closes not dead.When this circuit just switches on power, because the impact meeting sounding of impulse current is more than, separates alert button as long as now click, can sound all clear.
Also comprise electric capacity C3, one end of described electric capacity C3 is connected with power supply, the other end ground connection of electric capacity C3.
Described resistance R1 is 1 Europe, and R2 is 82k Europe, and R3 is 1K Europe.
Described electric capacity C1 is 47 μ F, C2 is 0.033 μ F.
Described power supply is 6V.
To sum up, the beneficial effects of the utility model are:
The utility model adopts VT1, VT2 to form touch simulation thyristor circuit, and VT3, VT4 are complementary type low-frequency oscillator, make that whole circuit has auto-lock function, trigger sensitivity is high, very unique, and have practicality.
Accompanying drawing explanation
Fig. 1 is the utility model structure chart.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but execution mode of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, a kind of touch mode alarm switching circuit, comprises Touching electrode, triode VT1, VT2, VT3, VT4, electric capacity C1, C2, resistance R1, R2, R3, loud speaker;
Described Touching electrode is connected with one end of resistance R1, the other end of resistance R1 is connected with the collector electrode of triode VT1, the emitter of triode VT1 is connected with power supply, the other end of resistance R1 is also connected with the base stage of triode VT2, the collector electrode of triode VT2 is connected with the base stage of triode VT1, the emitter of triode VT2 is connected with one end of electric capacity C1, the other end ground connection of electric capacity C1, the emitter of triode VT2 is also connected with the emitter of triode VT4, the emitter of triode VT2 is also connected with one end of resistance R2, the other end of resistance R2 is connected with one end of electric capacity C2, the other end of electric capacity C2 is connected with one end of resistance R3, the other end of resistance R3 is connected with the base stage of triode VT4, the collector electrode of triode VT4 is connected with one end of loud speaker, the other end ground connection of loud speaker, the other end of resistance R2 is also connected with the base stage of triode VT3, and the collector electrode of triode VT3 is connected with the base stage of triode VT4, the grounded emitter of triode VT3.
Thinking of the present utility model is: this circuit design is unique, and it has auto-lock function, once after staff touching, loud speaker will send alarm sound continuously, till the relevant personnel cut off the electricity supply.Circuit is also very simple, but trigger sensitivity is high.VT1, VT2 form touch simulation thyristor circuit, and VT3, VT4 are complementary type low-frequency oscillator.At ordinary times, simulation thyristor turns off, and VT3, VT4 failure of oscillation is noiseless.When staff touching Touching electrode, the noise signal of human body sensing injects the base stage of VT2 through R1, exported by collector electrode after amplifying, feed back to the base stage of VT1, amplify through VT1 again, amplified signal is exported by collector electrode and is input to the base stage of VT2, amplify again ... go round and begin again, so strong positive feedback makes the rapid conducting of VT1, VT2 saturated, once enter conducting state, Touching electrode just loses control action, just look like unidirectional thyristor once conducting, its gate pole just loses control action, except non-severed anode supply.This circuit is also like this, as long as staff one touches, VT1, VT2 just rapid conducting, VT3, VT4 starting of oscillation is reported to the police, and as wanted circuit to quit work, only has cut-out circuit work power.
This circuit has very high trigger sensitivity, therefore also can be used as touching warner, actual can connect a key switch, as the alert switch of solution between the base stage of VT2 and emitter when using, press the emitter junction of this switch because of short circuit VT2, simulation thyristor VT1, VT2 can turn off immediately.VT1, VT2 require that leakage current is less as far as possible, otherwise circuit closes not dead.When this circuit just switches on power, because the impact meeting sounding of impulse current is more than, separates alert button as long as now click, can sound all clear.
Embodiment 2:
As shown in Figure 1, and embodiment 1 is similar, and difference is:
Also comprise electric capacity C3, one end of described electric capacity C3 is connected with power supply, the other end ground connection of electric capacity C3.
Described resistance R1 is 1 Europe, and R2 is 82k Europe, and R3 is 1K Europe.
Described electric capacity C1 is 47 μ F, C2 is 0.033 μ F.
Described power supply is 6V.
As mentioned above, the utility model can be realized preferably.
Claims (5)
1. a touch mode alarm switching circuit, is characterized in that, comprises Touching electrode, triode VT1, VT2, VT3, VT4, electric capacity C1, C2, resistance R1, R2, R3, loud speaker;
Described Touching electrode is connected with one end of resistance R1, the other end of resistance R1 is connected with the collector electrode of triode VT1, the emitter of triode VT1 is connected with power supply, the other end of resistance R1 is also connected with the base stage of triode VT2, the collector electrode of triode VT2 is connected with the base stage of triode VT1, the emitter of triode VT2 is connected with one end of electric capacity C1, the other end ground connection of electric capacity C1, the emitter of triode VT2 is also connected with the emitter of triode VT4, the emitter of triode VT2 is also connected with one end of resistance R2, the other end of resistance R2 is connected with one end of electric capacity C2, the other end of electric capacity C2 is connected with one end of resistance R3, the other end of resistance R3 is connected with the base stage of triode VT4, the collector electrode of triode VT4 is connected with one end of loud speaker, the other end ground connection of loud speaker, the other end of resistance R2 is also connected with the base stage of triode VT3, and the collector electrode of triode VT3 is connected with the base stage of triode VT4, the grounded emitter of triode VT3.
2. a kind of touch mode alarm switching circuit according to claim 1, is characterized in that, also comprise electric capacity C3, and one end of described electric capacity C3 is connected with power supply, the other end ground connection of electric capacity C3.
3. a kind of touch mode alarm switching circuit according to claim 1, is characterized in that, described resistance R1 is 1 Europe, and R2 is 82k Europe, and R3 is 1K Europe.
4. a kind of touch mode alarm switching circuit according to claim 1, is characterized in that, described electric capacity C1 is 47 μ F, C2 is 0.033 μ F.
5. a kind of touch mode alarm switching circuit according to claim 1, is characterized in that, described power supply is 6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628967.XU CN204272070U (en) | 2014-10-28 | 2014-10-28 | A kind of touch mode alarm switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628967.XU CN204272070U (en) | 2014-10-28 | 2014-10-28 | A kind of touch mode alarm switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204272070U true CN204272070U (en) | 2015-04-15 |
Family
ID=52806915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420628967.XU Expired - Fee Related CN204272070U (en) | 2014-10-28 | 2014-10-28 | A kind of touch mode alarm switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204272070U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467790A (en) * | 2014-10-28 | 2015-03-25 | 成都峰达科技有限公司 | Touch switch circuit used for giving alarm |
| CN105013168A (en) * | 2015-06-24 | 2015-11-04 | 浙江科技学院 | Rapid touch-net judging device for volleyball |
| CN107204088A (en) * | 2017-07-06 | 2017-09-26 | 苏州锟恩电子科技有限公司 | It is a kind of to be used for antitheft human body touch warning circuit |
-
2014
- 2014-10-28 CN CN201420628967.XU patent/CN204272070U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467790A (en) * | 2014-10-28 | 2015-03-25 | 成都峰达科技有限公司 | Touch switch circuit used for giving alarm |
| CN105013168A (en) * | 2015-06-24 | 2015-11-04 | 浙江科技学院 | Rapid touch-net judging device for volleyball |
| CN107204088A (en) * | 2017-07-06 | 2017-09-26 | 苏州锟恩电子科技有限公司 | It is a kind of to be used for antitheft human body touch warning circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204272070U (en) | A kind of touch mode alarm switching circuit | |
| CN104467790A (en) | Touch switch circuit used for giving alarm | |
| CN204168270U (en) | Postpone touch switch circuit | |
| CN204168273U (en) | Safe and reliable alarm switch circuit | |
| CN203689635U (en) | Novel computer burglar alarm circuit | |
| CN206147864U (en) | Touch time delay electronic doorbell | |
| CN203733239U (en) | Touch acoustic equipment anti-theft alarm | |
| CN204168271U (en) | Touch Stereo Switch circuit | |
| CN204244073U (en) | A kind of controllable direct current power supply circuit | |
| CN205125375U (en) | Wallet anti -theft alarm | |
| CN204536412U (en) | A kind of power failure alarm device | |
| CN204516026U (en) | A kind of Smart Home touch screen type telepilot | |
| CN205017359U (en) | Intelligent safety inspection instrument of information outer net | |
| CN104320120A (en) | Switching circuit capable of generating modified tone | |
| CN204516025U (en) | A kind of Intelligent home remote controller | |
| CN204206185U (en) | Be applicable to the laser transmission radiating circuit of short distance information transmission | |
| CN204731904U (en) | A kind of doorbell with recognition function | |
| CN204258767U (en) | A kind of LED is clapped hands switching circuit | |
| CN208092893U (en) | A kind of novel touch formula alarm | |
| CN202617087U (en) | Voice type touch switch module | |
| CN203951641U (en) | A kind of human body sensing desk lamp | |
| CN204761409U (en) | Toy car single bond switching on and shutting down circuit | |
| CN204440587U (en) | A kind of magnetic control window theftproof alarm | |
| CN204632027U (en) | A kind of oscillatory type Household antitheft warning circuit | |
| CN203562078U (en) | Multi-purpose overflow alarm |
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: 20150415 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |