CN210109194U - Non-contact electronic electroscope circuit - Google Patents
Non-contact electronic electroscope circuit Download PDFInfo
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- CN210109194U CN210109194U CN201920386803.3U CN201920386803U CN210109194U CN 210109194 U CN210109194 U CN 210109194U CN 201920386803 U CN201920386803 U CN 201920386803U CN 210109194 U CN210109194 U CN 210109194U
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- 230000003321 amplification Effects 0.000 claims abstract description 33
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 33
- 230000000295 complement effect Effects 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 11
- 230000035945 sensitivity Effects 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 50
- 230000005672 electromagnetic field Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000000586 desensitisation Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a non-contact electronic electroscope circuit, which comprises a power module powered by a portable battery, a first amplification module, a voltage doubling detection module, a second amplification module, a complementary voltage-controlled oscillator with acousto-optic prompt, a metal plate P for sensing a charged body and an electroscope casing, wherein the first amplification module adopts a two-stage linked switch to carry out negative feedback and sensitivity adjustment; the power supply module is used for supplying power to the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator respectively; the metal plate P, the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator are sequentially connected; the utility model discloses a first amplification module adopts two-stage linked switch, and desensitization in the time of reinforcing negative feedback to reduce near the interference of the electrified body of electricity and electromagnetic field, improve the degree of accuracy of testing the electricity.
Description
Technical Field
The utility model relates to the electron electroscope technical field especially involves a non-contact electron electroscope circuit.
Background
When the distance between the electroscope and a low-voltage 220/380V electrified body is 3cm and the distance between the electroscope and a high-voltage 10kV electrified body is within 0.7m, the electroscope circuit can send out an alarm sound and send out light to indicate that the object has voltage; the device can detect the existence of voltage without directly contacting with a live conductor, and can replace a high-voltage electroscope to detect whether equipment and a circuit are live or not.
The current non-contact electronic electroscope circuit is not adjustable in sensitivity and is easily influenced by interference of an electromagnetic field of the surrounding environment and an adjacent charged body, so that the prior art has defects and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a non-contact electron electroscope circuit, the above-mentioned problem of solution.
In order to solve the above problem, the utility model provides a technical scheme as follows:
a non-contact electronic electroscope circuit comprises a power supply module powered by a portable battery, a first amplification module for negative feedback and sensitivity adjustment by a secondary linkage switch, a voltage-multiplying detection module, a second amplification module for direct current amplification, a complementary voltage-controlled oscillator with an acousto-optic prompt, a metal plate P for sensing a charged body and an electroscope shell; the power supply module is used for supplying power to the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator respectively; the metal plate P, the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator are sequentially connected.
The beneficial effects for prior art are that, adopt above-mentioned scheme, the utility model discloses an amplification module adopts two-stage linked switch, desensitization in the time of reinforcing negative feedback to reduce the interference of near electrified body and electromagnetic field, improve the degree of accuracy of testing the electricity.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic block diagram of a non-contact electronic electroscope circuit according to the present invention;
fig. 2 is a schematic circuit diagram of a non-contact electronic electroscope circuit according to the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The use of the terms "fixed," "integrally formed," "left," "right," and the like in this specification is for illustrative purposes only, and elements having similar structures are designated by the same reference numerals in the figures.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1-2, one embodiment of the present invention is:
a non-contact electronic electroscope circuit comprises a power supply module powered by a portable battery, a first amplification module for negative feedback and sensitivity adjustment by a secondary linkage switch, a voltage-multiplying detection module, a second amplification module for direct current amplification, a complementary voltage-controlled oscillator with an acousto-optic prompt, a metal plate P for sensing a charged body and an electroscope shell; the power supply module is used for supplying power to the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator respectively; the metal plate P, the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator are sequentially connected.
The power supply module comprises a power supply GB and a switch S1;
the positive pole of the power supply GB is connected with the second end of the switch S1; the power supply GB is a DC9V butterfly battery.
The first amplifying module comprises resistors R1-R11, R18-R19, capacitors C1-C9, an inductor L, triodes VT1-VT4 and switches S2-S4 for adjusting sensitivity;
the negative electrode of the battery GB is connected with the second end of the resistor R7;
the metal plate P is connected with a first end of a capacitor C1; a second end of the capacitor C1 is connected to the first end of the resistor R1, the second end of the switch S4, and the base of the transistor VT1, respectively; a first terminal of the switch S4 is connected to a first terminal of the capacitor C5; the second end of the capacitor C5 is connected with the first end of the resistor R4; a first end of the capacitor C8 is respectively connected with a collector of the triode VT2 and a second end of the resistors R4 and R6; the first end of the capacitor C4 is respectively connected with the first ends of the resistors R2-R3; the second end of the resistor R3 is respectively connected with the first ends of the resistors R6 and R8, the first end of the capacitor C6 and the collector of the triode VT 3; second ends of the capacitors C3, C4 and C6 are all grounded; the second end of the resistor R8 is respectively connected with the first ends of the resistors R9 and R11; the second end of the resistor R2 is respectively connected with the collector of the triode VT1 and the base of the triode VT 2; a second end of the resistor R1 is connected to a first end of the capacitor C2, a first end of the inductor L, and a first end of the switch S2, respectively; a first end of the capacitor C3 is connected to the second end of the capacitor C2, the second end of the inductor L, the second end of the switch S2, the first end of the resistor R19, and the first end of the switch S3, respectively; a second terminal of the switch S3 is connected to a first terminal of the resistor R18; an emitter of the triode VT2 is respectively connected with a first end of the resistor R5, a first end of the capacitor C7 and a second end of the resistors R18-R19; the emitter of the triode VT1 is respectively connected with the second ends of the resistors R5, R7 and R10, the second ends of the capacitors C7-C8 and the emitter of the triode VT 4; an emitter of the triode VT3 is respectively connected with a first end of the resistor R7 and a first end of the capacitor C9; the second end of the resistor R9 is respectively connected with the first end of the resistor R10, the second end of the capacitor C9 and the base of the triode VT 4; the second end of the resistor R11 is connected with the collector of the triode VT 4;
the transistors VT1-VT4 are all NPN transistors of 3DG6A type.
The voltage-multiplying detection module comprises resistors R12-R13, capacitors C10-C12 and diodes VD1-VD 2;
a first end of the resistor R11 is connected with a first end of the resistor R12; a second end of the resistor R11 is connected with a first end of the capacitor C10;
the first end of the resistor R12 is respectively connected with the first end of the resistor R13 and the first ends of the capacitors C11-C12; the second end of the resistor R12 is connected with the cathode of the diode VD 1; the second end of the capacitor C10 is respectively connected with the anode of the diode VD1 and the cathode of the diode VD 2; the anode of the diode VD2 is connected to the second terminal of the resistor R13 and the second terminal of the capacitor C12, respectively; the second end of the capacitor C11 is grounded;
the models of the diodes VD1-VD2 are all 2CP 11.
The second amplifying module comprises resistors R14-R16, a diode VD3 and a triode VT 5;
the cathode of the diode VD3 is connected with the first end of the resistor R13; the second end of the resistor R13 is connected with the base of the triode VT 5; a second end of the resistor R15 is connected with a second end of the resistor R10;
the anode of the diode VD3 is respectively connected with the first end of the resistor R16 and the emitter of the triode VT 5; the collector of the triode VT5 is connected with the first end of the resistor R14; the second end of the resistor R14 is connected with the first end of the resistor R15; a second end of the resistor R15 is connected with a second end of the resistor R16;
the transistor VT5 is a PNP transistor of 3AX31 type.
The complementary voltage-controlled oscillator comprises a resistor R17, a capacitor C13, a light-emitting diode VT, triodes VT6-VT7 and a buzzer SP;
a first end of the resistor R17 is connected with a first end of the capacitor C11; a second terminal of the resistor R17 is connected to a first terminal of the switch S1; a first end of the resistor R15 is connected with a first end of the capacitor C13; the negative electrode of the power supply GB is connected with the emitting electrode of the triode VT 6;
a second end of the resistor R17 is connected with the anode of the light emitting diode VT; the cathode of the light emitting diode VT is connected with the emitter of the triode VT 7; the base electrode of the triode VT7 is connected with the collector electrode of the triode VT 6; the base electrode of the triode VT6 is connected with the first end of the capacitor C13; the second end of the capacitor C13 is respectively connected with the collector of the triode VT7 and the first end of the buzzer SP; the second end of the buzzer SP is connected with the emitting electrode of the triode VT 6;
the triode VT6 is a 3DG6A type NPN transistor; the transistor VT7 is a PNP transistor of 3AX31A type.
The utility model discloses a theory of operation:
when the electroscope is close to the charged body, the metal plate P and the casing of the electroscope form a capacitor, and an alternating voltage is generated by induction of an electromagnetic field generated by alternating current. The input alternating voltage is subjected to VT1-VT 3 three-stage direct current amplification, then is output to VT4 from a VT3 emitter for alternating current amplification, and then is subjected to VD1 and VD2 voltage-doubling detection and is sent to VT5 direct current amplification. VT5 is off when no input signal is present and is turned on when the input voltage reaches above 1.3V. VT6 and VT7 constitute a complementary voltage-controlled oscillator, which is triggered by VT5 to work, the speaker emits alarm sound, and the light-emitting diode emits light at the same time.
S1 in the circuit is a power switch, and S2 is a sensitive regulating switch. When the two switches are closed, the coil L is short-circuited, and the electroscope is in a low-sensitivity state, so that the interference of other power supplies is reduced. S3 is the linked switch of S2, and when S2 is closed, S3 is also closed at the same time, which can enhance negative feedback and reduce sensitivity.
It should be noted that the above technical features are continuously combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; moreover, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A non-contact electronic electroscope circuit is characterized by comprising a power supply module powered by a portable battery, a first amplification module for negative feedback and sensitivity adjustment by adopting a two-stage linked switch, a voltage-multiplying detection module, a second amplification module for direct current amplification, a complementary voltage-controlled oscillator with acousto-optic prompt, a metal plate P for sensing a charged body and an electroscope shell; the power supply module is used for supplying power to the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator respectively; the metal plate P, the first amplification module, the voltage-multiplying detection module, the second amplification module and the complementary voltage-controlled oscillator are sequentially connected.
2. The contactless electronic electroscope circuit of claim 1, wherein the first amplifying module comprises resistors R1-R11, R18-R19, capacitors C1-C9, an inductor L, transistors VT1-VT4, and sensitivity adjusting switches S2-S4.
3. A contactless electronic electroscope circuit according to claim 2, characterized in that the metal plate P is connected to a first terminal of a capacitor C1; a second end of the capacitor C1 is connected to the first end of the resistor R1, the second end of the switch S4, and the base of the transistor VT1, respectively; a first terminal of the switch S4 is connected to a first terminal of the capacitor C5; the second end of the capacitor C5 is connected with the first end of the resistor R4; a first end of the capacitor C8 is respectively connected with a collector of the triode VT2 and a second end of the resistors R4 and R6; the first end of the capacitor C4 is respectively connected with the first ends of the resistors R2-R3; the second end of the resistor R3 is respectively connected with the first ends of the resistors R6 and R8, the first end of the capacitor C6 and the collector of the triode VT 3; second ends of the capacitors C3, C4 and C6 are all grounded; the second end of the resistor R8 is respectively connected with the first ends of the resistors R9 and R11; the second end of the resistor R2 is respectively connected with the collector of the triode VT1 and the base of the triode VT 2; a second end of the resistor R1 is connected to a first end of the capacitor C2, a first end of the inductor L, and a first end of the switch S2, respectively; a first end of the capacitor C3 is connected to the second end of the capacitor C2, the second end of the inductor L, the second end of the switch S2, the first end of the resistor R19, and the first end of the switch S3, respectively; a second terminal of the switch S3 is connected to a first terminal of the resistor R18; an emitter of the triode VT2 is respectively connected with a first end of the resistor R5, a first end of the capacitor C7 and a second end of the resistors R18-R19; the emitter of the triode VT1 is respectively connected with the second ends of the resistors R5, R7 and R10, the second ends of the capacitors C7-C8 and the emitter of the triode VT 4; an emitter of the triode VT3 is respectively connected with a first end of the resistor R7 and a first end of the capacitor C9; the second end of the resistor R9 is respectively connected with the first end of the resistor R10, the second end of the capacitor C9 and the base of the triode VT 4; the second terminal of the resistor R11 is connected to the collector of the transistor VT 4.
4. A contactless electronic electroscope circuit according to claim 2 or 3, characterized in that the transistors VT1-VT4 are all NPN transistors of 3DG6A type.
5. The contactless electronic electroscope circuit according to claim 1, wherein the voltage-doubling detection module comprises resistors R12-R13, capacitors C10-C12 and diodes VD1-VD 2.
6. The contactless electronic electroscope circuit of claim 5, wherein a first terminal of the resistor R12 is connected to a first terminal of the resistor R13 and a first terminal of the capacitors C11-C12, respectively; the second end of the resistor R12 is connected with the cathode of the diode VD 1; the second end of the capacitor C10 is respectively connected with the anode of the diode VD1 and the cathode of the diode VD 2; the anode of the diode VD2 is connected to the second terminal of the resistor R13 and the second terminal of the capacitor C12, respectively; the second terminal of the capacitor C11 is connected to ground.
7. The contactless electronic electroscope circuit of claim 1, wherein the second amplifying module comprises resistors R14-R16, a diode VD3 and a transistor VT 5.
8. The contactless electronic electroscope circuit of claim 1, wherein the power supply module comprises a power supply GB and a switch S1; the positive pole of the power supply GB is connected with the second end of the switch S1; the power supply GB is a DC9V butterfly battery.
9. The contactless electronic electroscope circuit of claim 1, wherein the complementary voltage controlled oscillator comprises a resistor R17, a capacitor C13, a light emitting diode VT, a transistor VT6-VT7, and a buzzer SP.
10. The contactless electronic electroscope circuit of claim 9, wherein the transistor VT6 is a 3DG6A type NPN transistor; the transistor VT7 is a PNP transistor of 3AX31A type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920386803.3U CN210109194U (en) | 2019-03-26 | 2019-03-26 | Non-contact electronic electroscope circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920386803.3U CN210109194U (en) | 2019-03-26 | 2019-03-26 | Non-contact electronic electroscope circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210109194U true CN210109194U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920386803.3U Expired - Fee Related CN210109194U (en) | 2019-03-26 | 2019-03-26 | Non-contact electronic electroscope circuit |
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| Country | Link |
|---|---|
| CN (1) | CN210109194U (en) |
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2019
- 2019-03-26 CN CN201920386803.3U patent/CN210109194U/en not_active Expired - Fee Related
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Granted publication date: 20200221 |