CN207473813U - A kind of electrostatic detection sound light alarming circuit - Google Patents
A kind of electrostatic detection sound light alarming circuit Download PDFInfo
- Publication number
- CN207473813U CN207473813U CN201721252762.6U CN201721252762U CN207473813U CN 207473813 U CN207473813 U CN 207473813U CN 201721252762 U CN201721252762 U CN 201721252762U CN 207473813 U CN207473813 U CN 207473813U
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- CN
- China
- Prior art keywords
- triode
- speech chip
- sound light
- alarming circuit
- light alarming
- 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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Abstract
The utility model discloses a kind of electrostatic detection sound light alarming circuits, field-effect tube T1, detection sheet metal form electrostatic induction sensor, triode, light emitting diode, speech chip form sound light alarming circuit, can send out sound-light alarm around finding there are during electrostatic, after user is reminded to avoid electrostatic, it measures again, ensures measuring accuracy, circuit is simple, it is of low cost, it has a good application prospect.
Description
Technical field
The utility model is related to electronic measurement circuit technical fields, and in particular to a kind of electrostatic detection sound light alarming circuit.
Background technology
Electronic metering equipment in measurement process, when easily being interfered by ambient static electricity, can influence measuring accuracy,
It during measurement, needs to avoid the influence of electrostatic, when electrostatic generates, how to find at the first time, be current problem to be solved.
Utility model content
It, can shadow when easily being interfered by ambient static electricity the purpose of the utility model is to overcome existing in measurement process
Measuring accuracy is rung, when measuring, the problem of needing to avoid electrostatic.The electrostatic detection sound light alarming circuit of the utility model, energy
It there are sound-light alarm during electrostatic, is sent out enough around finding, after user is reminded to avoid electrostatic, then measures, ensures to measure smart
Exactness, circuit is simple, of low cost, has a good application prospect.
In order to achieve the above object, technical solution is used by the utility model：
A kind of electrostatic detection sound light alarming circuit, it is characterised in that：Including field-effect tube T1, speech chip U1 and accumulator
The anode of G1, the accumulator G1 be in series with switch S1, it is described switch S1 respectively with one end of loud speaker B1, light emitting diode D1
Anode, resistance R1 one end be connected, the other end of the resistance R1 is connected with the source electrode of field-effect tube T1, field effect
Should pipe T1 grid with detection sheet metal M1 be connected, the drain electrode of the field-effect tube T1 is connected with the base stage of triode Q1,
The emitter of the triode Q1 is connected with the cathode of accumulator G1, and the cathode of the accumulator G1 is connected to the ground, described
The collector of triode Q1 is connected with the VSS terminal of speech chip U1, the TG terminals and speech chip of the speech chip U1
The VDD terminal of U1 is connected, and the VDD terminal of the speech chip U1 also passes through the OSC terminal phases of resistance R2 and speech chip U1
Connection, the cathode of the VDD terminal of the speech chip U1 also with light emitting diode D1 are connected, the O/P of the speech chip U1
Terminal is connected with the base stage of triode Q2, and the emitter of the triode Q2 is connected to the ground, the current collection of the triode Q1
Pole is connected with the other end of loud speaker B1.
A kind of aforementioned electrostatic detection sound light alarming circuit, it is characterised in that：The switch S1 is also with polar capacitor C1's
Anode is connected, and the cathode of the polar capacitor C1 is connected to the ground.
A kind of aforementioned electrostatic detection sound light alarming circuit, it is characterised in that：The model BS250 of the field-effect tube T1
Field-effect tube.
A kind of aforementioned electrostatic detection sound light alarming circuit, it is characterised in that：The triode Q1, triode Q2 are
NPN type triode.
A kind of aforementioned electrostatic detection sound light alarming circuit, it is characterised in that：The model of the speech chip U1
HFC5212 speech chips.
A kind of aforementioned electrostatic detection sound light alarming circuit, it is characterised in that：Between the positive and negative electrode of the accumulator G1
Voltage is 5V.
A kind of aforementioned electrostatic detection sound light alarming circuit, it is characterised in that：The detection sheet metal M1 uses copper sheet system
Into.
The beneficial effects of the utility model are：Field-effect tube T1, the electrostatic detection sound light alarming circuit of the utility model is visited
It surveys sheet metal and forms electrostatic induction sensor, triode, light emitting diode, speech chip form sound light alarming circuit, Neng Gou
It there are sound-light alarm during electrostatic, is sent out around it was found that, after user is reminded to avoid electrostatic, then measures, ensures measuring accuracy,
Circuit is simple, of low cost, has a good application prospect.
Description of the drawings
Fig. 1 is the circuit diagram of the electrostatic detection sound light alarming circuit of the utility model.
Specific embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, the electrostatic detection sound light alarming circuit of the utility model, including field-effect tube T1, speech chip U1
With accumulator G1, the anode of the accumulator G1 be in series with switch S1, the switch S1 respectively with one end of loud speaker B1, shine
The anode of diode D1, one end of resistance R1 are connected, and the other end of the resistance R1 is connected with the source electrode of field-effect tube T1,
The grid of the field-effect tube T1 is connected with detection sheet metal M1, the drain electrode of the field-effect tube T1 and the base stage of triode Q1
It is connected, the emitter of the triode Q1 is connected with the cathode of accumulator G1, and the cathode of the accumulator G1 is connected to the ground
It connects, the collector of the triode Q1 is connected with the VSS terminal of speech chip U1, the TG terminals and language of the speech chip U1
The VDD terminal of sound chip U1 is connected, and the VDD terminal of the speech chip U1 also passes through the OSC of resistance R2 and speech chip U1
Terminal is connected, and the cathode of the VDD terminal of the speech chip U1 also with light emitting diode D1 is connected, the speech chip U1
O/P terminals be connected with the base stage of triode Q2, the emitter of the triode Q2 is connected to the ground, the triode Q1's
Collector is connected with the other end of loud speaker B1.
Preferably, anodes of the switch S1 also with polar capacitor C1 is connected, cathode and the ground of the polar capacitor C1
Be connected, can filtering clutter, ensure power supply reliability.
Preferably, the model BS250 field-effect tube of the field-effect tube T1, cooperation detection sheet metal M1, forms electrostatic
Inductive pick-up, detection sheet metal M1 here are made of copper sheet, and conductive effect is good.
Preferably, the triode Q1, triode Q2 are NPN type triode.
Preferably, the model HFC5212 speech chips of the speech chip U1, trigger work after, can send out too
Alarm, and light light emitting diode D1, realize sound-light alarm.
Preferably, voltage between the positive and negative electrode of the accumulator G1 be 5V, entire circuit power consumption is low.
The electrostatic detection sound light alarming circuit of the utility model, operation principle are as follows：
Field-effect tube T1, detection sheet metal M1 form electrostatic induction sensor, triode Q1, Q2, light emitting diode D1, language
Sound chip U1 forms sound light alarming circuit, can be around finding there are during electrostatic, and field-effect tube T1 is connected, by triode Q1
Triggering speech chip U1 works, and optical diode D1 is lighted first, and the output signal of speech chip U1 is passed through by O/P terminals
After triode Q2 amplifications, drive the speaker B1 sends out too alarm, so as to fulfill sound-light alarm.
In conclusion the electrostatic detection sound light alarming circuit of the utility model, field-effect tube T1, detection sheet metal form quiet
Electric induction sensor, triode, light emitting diode, speech chip form sound light alarming circuit, can find around there are quiet
When electric, sound-light alarm is sent out, after user is reminded to avoid electrostatic, then is measured, ensures measuring accuracy, circuit is simple, cost
It is cheap, it has a good application prospect.
The basic principle, main features and advantages of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (7)
1. a kind of electrostatic detection sound light alarming circuit, it is characterised in that：Including field-effect tube T1, speech chip U1 and accumulator
The anode of G1, the accumulator G1 be in series with switch S1, it is described switch S1 respectively with one end of loud speaker B1, light emitting diode D1
Anode, resistance R1 one end be connected, the other end of the resistance R1 is connected with the source electrode of field-effect tube T1, field effect
Should pipe T1 grid with detection sheet metal M1 be connected, the drain electrode of the field-effect tube T1 is connected with the base stage of triode Q1,
The emitter of the triode Q1 is connected with the cathode of accumulator G1, and the cathode of the accumulator G1 is connected to the ground, described
The collector of triode Q1 is connected with the VSS terminal of speech chip U1, the TG terminals and speech chip of the speech chip U1
The VDD terminal of U1 is connected, and the VDD terminal of the speech chip U1 also passes through the OSC terminal phases of resistance R2 and speech chip U1
Connection, the cathode of the VDD terminal of the speech chip U1 also with light emitting diode D1 are connected, the O/P of the speech chip U1
Terminal is connected with the base stage of triode Q2, and the emitter of the triode Q2 is connected to the ground, the current collection of the triode Q1
Pole is connected with the other end of loud speaker B1.
2. a kind of electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：It is described switch S1 also with pole
The anode of property capacitance C1 is connected, and the cathode of the polar capacitor C1 is connected to the ground.
3. a kind of electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The field-effect tube T1's
Model BS250 field-effect tube.
4. a kind of electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The triode Q1, three
Pole pipe Q2 is NPN type triode.
5. a kind of electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The speech chip U1's
Model HFC5212 speech chips.
6. a kind of electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The accumulator G1's
Voltage between positive and negative electrode is 5V.
7. a kind of electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The detection sheet metal M1
It is made of copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721252762.6U CN207473813U (en) | 2017-09-27 | 2017-09-27 | A kind of electrostatic detection sound light alarming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721252762.6U CN207473813U (en) | 2017-09-27 | 2017-09-27 | A kind of electrostatic detection sound light alarming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207473813U true CN207473813U (en) | 2018-06-08 |
Family
ID=62266323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721252762.6U Expired - Fee Related CN207473813U (en) | 2017-09-27 | 2017-09-27 | A kind of electrostatic detection sound light alarming circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207473813U (en) |
-
2017
- 2017-09-27 CN CN201721252762.6U patent/CN207473813U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20190927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |