CN215898069U - Static elimination circuit and device - Google Patents
Static elimination circuit and device Download PDFInfo
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- CN215898069U CN215898069U CN202121666942.5U CN202121666942U CN215898069U CN 215898069 U CN215898069 U CN 215898069U CN 202121666942 U CN202121666942 U CN 202121666942U CN 215898069 U CN215898069 U CN 215898069U
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Abstract
The utility model discloses a static elimination circuit and a device, wherein the circuit comprises a power interface, a voltage stabilizing module, a first control unit, a static collecting module, a human body detecting module and a voice module. The input end of the voltage stabilizing module is connected with the power interface; the power supply end of the first control unit is connected with the power supply end of the voltage stabilizing module; the output end of the static electricity acquisition module is connected with the first input end of the first control unit, and the power supply end of the static electricity acquisition module is connected with the power supply end of the voltage stabilizing module; the output end of the human body detection module is connected with the second input end of the first control unit, and the power supply end of the human body detection module is connected with the power supply end of the voltage stabilization module; the input end of the voice module is connected with the output end of the first control unit, and the power supply end of the voice module is connected with the power supply end of the voltage stabilizing module. The static elimination circuit of the utility model can more accurately guide the human body to carry out static elimination by utilizing the voltage stabilizing module, the human body detection module and the voice module, and is beneficial to improving the static elimination effect.
Description
Technical Field
The utility model relates to the technical field of static elimination, in particular to a static elimination circuit.
Background
Static electricity is carried by human bodies frequently, and in special places, such as flammable and explosive places such as dangerous environments of potential fire and explosion, the static electricity on the human bodies needs to be eliminated first, and people can enter the places. At present, there is a device for eliminating static electricity of a human body, which is implemented by contacting the human body with the device, but in the whole static electricity elimination process, the human body may leave when the static electricity is not completely eliminated, resulting in poor elimination effect, and the static electricity may not be completely eliminated after using the device.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an electrostatic elimination circuit which can guide a human body to carry out electrostatic elimination more accurately.
The utility model also provides a static elimination device comprising the static elimination circuit.
According to an embodiment of the first aspect of the present invention, a static elimination circuit includes: a power interface; the input end of the voltage stabilizing module is connected with the power interface; the power supply end of the first control unit is connected with the power supply end of the voltage stabilizing module; the output end of the static electricity acquisition module is connected with the first input end of the first control unit, and the power supply end of the static electricity acquisition module is connected with the power supply end of the voltage stabilizing module; the human body detection module comprises a human body detection sensor, a band-pass filtering unit and a second control unit, wherein the output end of the human body detection sensor is respectively connected with the first end of the band-pass filtering unit and the input end of the second control unit, the output end of the second control unit is connected with the second input end of the first control unit, the power supply end of the human body detection sensor and the power supply end of the second control unit are respectively connected with the power supply end of the voltage stabilizing module, and the second end of the band-pass filtering unit is grounded; and the input end of the voice module is connected with the output end of the first control unit, and the power supply end of the voice module is connected with the power supply end of the voltage stabilizing module.
The static elimination circuit according to the embodiment of the utility model has at least the following beneficial effects: the power interface is used for connecting the circuit with a power supply; the voltage stabilizing module is used for stabilizing the power output, so that the static electricity collecting module, the human body detecting module, the voice module and the first control unit work stably, the reliability of the circuit is improved, the static electricity collecting module can accurately collect static electricity signals, the human body detecting module can accurately detect whether a human body approaches, the first control unit can accurately control the voice module to give an alarm or prompt, the human body can conveniently perform static elimination according to the alarm or the prompt of the voice module, and the static electricity elimination can be accurately conducted by guiding the human body. In addition, in the human body detection module, a band-pass filtering unit is arranged for inhibiting the interference in the approach signal of the human body detection sensor for detecting the approach of the human body, so that the second control unit can conveniently acquire the more accurate approach signal, and the first control unit can more accurately control the voice module to give an alarm or prompt, thereby being beneficial to accurately guiding the human body to carry out electrostatic elimination.
According to some embodiments of the present invention, the voltage stabilizing module includes a first current limiting unit, a second current limiting unit and a voltage limiting unit, a first end of the first current limiting unit is connected to the power interface, a second end of the first current limiting unit is connected to a first end of the voltage limiting unit and a first end of the second current limiting unit, respectively, a second end of the voltage limiting unit is grounded, and a second end of the second current limiting unit is connected to a power source terminal of the first control unit, a power source terminal of the static electricity collection module, a power source terminal of the human body detection module and a power source terminal of the voice module, respectively, so as to stabilize power output.
According to some embodiments of the present invention, the voltage limiting unit includes a zener diode D1, a zener diode D2, and a zener diode D3, wherein an anode of the zener diode D1, an anode of the zener diode D2, and an anode of the zener diode D3 are respectively connected to the second end of the first current limiting unit, and a cathode of the zener diode D1, a cathode of the zener diode D2, and a cathode of the zener diode D3 are grounded to facilitate voltage stabilization.
According to some embodiments of the present invention, the voltage stabilizing module further includes a filtering unit, a first end of the filtering unit is connected to the second end of the second current limiting unit, and a second end of the filtering unit is grounded, so as to filter interference in a circuit.
According to some embodiments of the present invention, the static electricity collecting module includes a static electricity releasing ball, a voltage dropping unit and a voltage comparing unit, a first end of the voltage dropping unit is connected to the static electricity releasing ball, a second end of the voltage dropping unit is connected to an input end of the voltage comparing unit, an output end of the voltage comparing unit is connected to a first input end of the first control unit, and a power supply end of the voltage comparing unit is connected to a power supply end of the voltage stabilizing module so as to collect the static electricity signal.
According to some embodiments of the present invention, the human body detection module includes a human body detection sensor, a band-pass filtering unit and a second control unit, an output end of the human body detection sensor is respectively connected to a first end of the band-pass filtering unit and an input end of the second control unit, an output end of the second control unit is connected to a second input end of the first control unit, a power supply end of the human body detection sensor and a power supply end of the second control unit are respectively connected to a power supply end of the voltage stabilizing module, and a second end of the band-pass filtering unit is grounded to facilitate human body detection.
According to some embodiments of the present invention, the human body detection module further includes a warning light unit, an input end of the warning light unit is connected to the power supply end of the voltage stabilization module, and an output end of the second control unit is connected to the second input end of the first control unit through the warning light unit, so as to send out an optical signal for warning.
According to some embodiments of the present invention, the warning light unit includes a resistor R12, a diode LED1, and a switch Q1, a first end of the resistor R12 is connected to the power supply terminal of the voltage regulator module, a second end of the resistor R12 is connected to the anode of the diode LED1, a cathode of the diode LED1 is connected to the input terminal of the switch Q1 and the second input terminal of the first control unit, respectively, a controlled terminal of the switch Q1 is connected to the output terminal of the second control unit, and an output terminal of the switch Q1 is grounded, so as to emit an optical signal for warning.
According to some embodiments of the present invention, the voice module includes a third control unit, a switch tube Q2 and a speaker, an input terminal of the third control unit is connected to an output terminal of the first control unit, an output terminal of the third control unit is connected to a controlled terminal of the switch tube Q2, an input terminal of the switch tube Q2 is connected to an output terminal of the speaker, an output terminal of the switch tube Q2 is grounded, and an input terminal of the speaker and a power supply terminal of the third control unit are respectively connected to a power supply terminal of the voltage stabilizing module, so as to emit an acoustic signal for alarm or prompt.
The static elimination device according to the second aspect of the embodiment of the utility model comprises the static elimination circuit according to the first aspect.
The static eliminating device provided by the embodiment of the utility model has the following beneficial effects: voltage stabilizing module is arranged in the static elimination circuit and is used for making the operating voltage of circuit stable, so that human detection module, voice module, static collection module and first the control unit normally work, with the reliability of improvement circuit, and human detection module detects whether human body is close, so that first the control unit control voice module work, make voice module send corresponding acoustic signal that is used for reporting to the police or suggestion, thereby be convenient for human body carry out the static elimination according to voice module's warning or suggestion, be favorable to improving the static elimination effect.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of an exemplary embodiment of a static elimination circuit;
FIG. 2 is a detailed block diagram of the static elimination circuit shown in FIG. 1;
FIG. 3 is a partial circuit diagram of the static elimination circuit shown in FIG. 2;
FIG. 4 is a circuit diagram of a human body detecting module of the static eliminating circuit shown in FIG. 2;
fig. 5 is a circuit diagram of a voice module of the static electricity elimination circuit shown in fig. 2.
The reference numbers are as follows:
the power supply comprises a power interface 100, a voltage stabilizing module 200, a first current limiting unit 210, a second current limiting unit 220, a voltage limiting unit 230 and a filtering unit 240;
the first control unit 300, the static electricity collection module 400, the static electricity release ball 410, the voltage reduction unit 420, and the voltage comparison unit 430;
the human body detection module 500, the human body detection sensor 510, the band-pass filtering unit 520, the second control unit 530, and the warning light unit 540;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
A static electricity eliminating apparatus includes a static electricity eliminating circuit. The static electricity eliminating circuit sends out an acoustic signal for alarming or prompting by detecting the approach of a human body, so that the human body eliminates static electricity by utilizing the static electricity eliminating circuit according to the acoustic signal, and the static electricity eliminating effect is favorably improved.
Referring to fig. 1, 2 and 4, the static electricity elimination circuit includes a power interface 100, a voltage stabilization module 200, a first control unit 300, a static electricity collection module 400, a human body detection module 500 and a voice module 600. The input end of the voltage stabilizing module 200 is connected with the power interface 100; the power supply end of the first control unit 300 is connected with the power supply end of the voltage stabilizing module 200; the output end of the static electricity collection module 400 is connected with the first input end of the first control unit 300, and the power supply end of the static electricity collection module 400 is connected with the power supply end of the voltage stabilization module 200; the human body detection module 500 comprises a human body detection sensor 510, a band-pass filtering unit 520 and a second control unit 530, wherein the output end of the human body detection sensor 510 is respectively connected with the first end of the band-pass filtering unit 520 and the input end of the second control unit 530, the output end of the second control unit 530 is connected with the second input end of the first control unit 300, the power supply end of the human body detection sensor 510 and the power supply end of the second control unit 530 are respectively connected with the power supply end of the voltage stabilization module 200, and the second end of the band-pass filtering unit 520 is grounded; the input end of the voice module 600 is connected to the output end of the first control unit 300, and the power supply end of the voice module 600 is connected to the power supply end of the voltage stabilizing module 200.
The static elimination circuit obtains a power supply through the power interface 100, and stabilizes the voltage in the circuit through the voltage stabilizing module 200, so that the first control unit 300, the static collecting module 400, the human body detecting module 500 and the voice module 600 work normally, which is beneficial for the static collecting module 400 to accurately collect static signals, the human body detecting module 500 to accurately detect the approach of a human body, and the first control unit 300 to accurately control the voice module 600 to sound. When the human body detection module 500 detects that a human body approaches, the first control unit 300 controls the voice module 600 to generate an acoustic signal to prompt the human body to eliminate static electricity by using the static electricity elimination circuit; when the static electricity collecting module 400 works, the static electricity signal is collected and transmitted to the first control unit 300, so that the first control unit 300 controls the voice module 600 to sound to prompt whether the current static electricity of the human body is eliminated, the static electricity eliminating effect is improved, the phenomenon that the human body leaves without the static electricity eliminated is reduced, and the human body is guided to be eliminated accurately.
In addition, the human body detection module 500 is provided with the band-pass filtering unit 520, the human body detection sensor 510 is used for detecting whether a human body approaches, when the human body approaches, an approach signal is sent to the second control unit 530, and the band-pass filtering unit 520 can suppress interference in the approach signal, so that the second control unit 530 receives a more accurate approach signal, and the first control unit 300 can more accurately control the voice module 600 to send an alarm or prompt, which is beneficial to accurately guiding the human body to perform electrostatic elimination.
In this embodiment, the human body detection sensor 510 employs an infrared pyroelectric sensor, which can avoid radiation and reduce power consumption, and has strong anti-interference performance. The human body detection sensor 510 may be a photoelectric sensor, an infrared sensor, or the like. The second control unit 530 is configured to perform a secondary amplification process on the proximity signal, so that a control chip in the second control unit 530 can detect the proximity signal, and the second control unit 530 sends a high level signal or a low level signal to the first control unit 300, so that the first control unit 300 controls the voice module 600 to operate, and the voice module 600 sends an acoustic signal to prompt a human body to eliminate static electricity.
It should be noted that the second control unit 530 may be formed by a BISS0001 chip and peripheral circuits thereof, and a second-stage amplifying circuit is integrated in the BISS0001 chip, so as to be beneficial to amplifying the proximity signal, thereby facilitating to detect the proximity signal and send a corresponding high-level signal or low-level signal to the first control unit 300.
Referring to fig. 2 and 3, the voltage regulation module 200 includes a first current limiting unit 210, a second current limiting unit 220 and a voltage limiting unit 230, a first end of the first current limiting unit 210 is connected to the power interface 100, a second end of the first current limiting unit 210 is connected to a first end of the voltage limiting unit 230 and a first end of the second current limiting unit 220, respectively, a second end of the voltage limiting unit 230 is grounded, and a second end of the second current limiting unit 220 is connected to a power source terminal of the first control unit 300, a power source terminal of the static electricity collection module 400, a power source terminal of the human body detection module 500 and a power source terminal of the voice module 600, respectively. The first current limiting unit 210 and the second current limiting unit 220 are used to reduce the current flowing into the circuit, so as to meet the normal operation requirement of the circuit. The voltage limiting unit 230 is used to limit the voltage in the circuit, so as to prevent the circuit from being damaged due to the excessive voltage, which is beneficial to the normal operation of the circuit. In addition, the first current limiting unit 210, the second current limiting unit 220 and the voltage limiting unit 230 can make the power output more stable, which is beneficial to improving the reliability of the circuit, so that the first control unit 300, the static electricity collecting module 400, the human body detecting module 500 and the voice module 600 can work normally.
It should be noted that, referring to fig. 3, the voltage limiting unit 230 includes a zener diode D1, a zener diode D2, and a zener diode D3, wherein an anode of the zener diode D1, an anode of the zener diode D2, and an anode of the zener diode D3 are respectively connected to the second end of the first current limiting unit 210, and a cathode of the zener diode D1, a cathode of the zener diode D2, and a cathode of the zener diode D3 are grounded. The voltage stabilizing function and the voltage limiting function of the circuit are realized through the Zener diode, so that the reliability of the circuit is improved. In addition, the voltage limiting unit 230 may be formed by a switching tube such as a transistor.
Each of the first current limiting unit 210 and the second current limiting unit 220 may be formed by connecting a plurality of resistors in series, or may be formed by one current limiting resistor.
Referring to fig. 3, the voltage stabilizing module 200 further includes a filtering unit 240, a first terminal of the filtering unit 240 is connected to the second terminal of the second current limiting unit 220, and a second terminal of the filtering unit 240 is grounded. Wherein, the filtering unit 240 is used for filtering noise interference in the power supply, so as to make the power output more stable, so as to improve the reliability of the circuit, so as to improve the accuracy of the electrostatic signal collected by the electrostatic collecting module 400, so as to accurately control the voice module 600 to send out the acoustic signal by the first control unit 300, so as to facilitate the elimination of static electricity by the human body, so as to improve the static electricity elimination effect. The filter unit 240 may be formed of a single capacitor, or may be formed of a plurality of capacitors connected in parallel.
Referring to fig. 2 and 3, the static electricity collecting module 400 includes a static electricity releasing ball 410, a voltage dropping unit 420 and a voltage comparing unit 430, a first end of the voltage dropping unit 420 is connected to the static electricity releasing ball 410, a second end of the voltage dropping unit 420 is connected to an input end of the voltage comparing unit 430, an output end of the voltage comparing unit 430 is connected to a first input end of the first control unit 300, and a power supply end of the voltage comparing unit 430 is connected to a power supply end of the voltage stabilizing module 200. Wherein the human body discharges static electricity by contacting with the static electricity discharging ball 410, and the voltage dropping unit 420 drops the static electricity flowing into the circuit through the static electricity discharging ball 410 so that the voltage comparing unit 430 compares the voltage. The voltage comparison unit 430 detects the static voltage to obtain a result, so that the first control unit 300 controls the voice module 600 to operate, so that the voice module 600 sends out an acoustic signal to prompt whether the static electricity of the human body is eliminated, thereby accurately guiding the human body to eliminate the static electricity, and being beneficial to improving the static electricity elimination effect. The voltage comparing unit 430 may adopt a voltage comparator, and the first control unit 300 controls the voice module 600 to work according to a comparison result of the voltage comparator, for example, the static electricity is not eliminated, and the voltage comparator outputs a high level signal to the first control unit 300, so that the first control unit 300 controls the voice module 600 to send an acoustic signal for prompting that the static electricity is not eliminated; or, when the static electricity elimination is completed, the voltage comparator outputs a low level signal to the first control unit 300, so that the control unit controls the voice module 600 to send an acoustic signal for prompting the completion of the static electricity elimination.
It should be noted that the voltage dropping unit 420 may be formed by one or more resistors.
Referring to fig. 2 and 4, the human body detecting module 500 further includes a warning light unit 540, an input end of the warning light unit 540 is connected to the power supply end of the voltage stabilizing module 200, and an output end of the second control unit 530 is connected to a second input end of the first control unit 300 through the warning light unit 540. The indicator light unit 540 is used for emitting an optical signal to indicate the approach of a human body, so that the human body can find the static electricity eliminating device.
It should be noted that, referring to fig. 4, the warning light unit 540 includes a resistor R12, a diode LED1, and a switch tube Q1, a first end of the resistor R12 is connected to the power supply terminal of the voltage regulator module 200, a second end of the resistor R12 is connected to the anode of the diode LED1, a cathode of the diode LED1 is connected to the input terminal of the switch tube Q1 and the second input terminal of the first control unit 300, a controlled terminal of the switch tube Q1 is connected to the output terminal of the second control unit 530, and an output terminal of the switch tube Q1 is grounded. The output end of the second control unit 530 is connected to the controlled end of the switching tube Q1, and the diode LED1 is controlled by a high level signal and a low level signal, and the level state of the second input end of the first control unit 300 is changed, so that the first control unit 300 controls the voice module 600 to operate, which is beneficial to improving the static electricity eliminating effect.
Referring to fig. 2 and 5, the voice module 600 includes a third control unit 610, a switching tube Q2 and a speaker 620, an input terminal of the third control unit 610 is connected to an output terminal of the first control unit 300, an output terminal of the third control unit 610 is connected to a controlled terminal of the switching tube Q2, an input terminal of the switching tube Q2 is connected to an output terminal of the speaker 620, an output terminal of the switching tube Q2 is grounded, and an input terminal of the speaker 620 and a power supply terminal of the third control unit 610 are respectively connected to a power supply terminal of the voltage stabilizing module 200. The third control unit 610 is configured to control on/off of the switching tube Q2 according to a control signal of the first control unit 300, so as to control sound emission of the speaker 620. Specifically, the third control unit 610 has a built-in memory chip storing a voice file, and the third control unit 610, under the control of the first control unit 300, sends out a signal with a corresponding frequency according to the built-in voice file, and changes the on-off state of the switching tube Q2, so that the speaker 620 sends out different sound signals, so as to prompt, thereby facilitating the elimination of static electricity by a human body according to the sound signals, and being beneficial to improving the elimination effect.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. An electrostatic discharge circuit, comprising:
a power interface;
the input end of the voltage stabilizing module is connected with the power interface;
the power supply end of the first control unit is connected with the power supply end of the voltage stabilizing module;
the output end of the static electricity acquisition module is connected with the first input end of the first control unit, and the power supply end of the static electricity acquisition module is connected with the power supply end of the voltage stabilizing module;
the human body detection module comprises a human body detection sensor, a band-pass filtering unit and a second control unit, wherein the output end of the human body detection sensor is respectively connected with the first end of the band-pass filtering unit and the input end of the second control unit, the output end of the second control unit is connected with the second input end of the first control unit, the power supply end of the human body detection sensor and the power supply end of the second control unit are respectively connected with the power supply end of the voltage stabilizing module, and the second end of the band-pass filtering unit is grounded;
and the input end of the voice module is connected with the output end of the first control unit, and the power supply end of the voice module is connected with the power supply end of the voltage stabilizing module.
2. The static elimination circuit according to claim 1, wherein the voltage stabilization module comprises a first current limiting unit, a second current limiting unit and a voltage limiting unit, a first end of the first current limiting unit is connected to the power interface, a second end of the first current limiting unit is connected to a first end of the voltage limiting unit and a first end of the second current limiting unit, respectively, a second end of the voltage limiting unit is grounded, and a second end of the second current limiting unit is connected to a power source terminal of the first control unit, a power source terminal of the static collection module, a power source terminal of the human body detection module and a power source terminal of the voice module, respectively.
3. The circuit of claim 2, wherein the voltage limiting unit comprises a zener diode D1, a zener diode D2 and a zener diode D3, wherein the anode of the zener diode D1, the anode of the zener diode D2 and the anode of the zener diode D3 are respectively connected to the second terminal of the first current limiting unit, and the cathode of the zener diode D1, the cathode of the zener diode D2 and the cathode of the zener diode D3 are grounded.
4. The ESD circuit of claim 2, wherein the voltage regulator module further comprises a filter unit, a first terminal of the filter unit is connected to a second terminal of the second current limiting unit, and a second terminal of the filter unit is grounded.
5. The static elimination circuit according to claim 1, wherein the static electricity collection module comprises a static electricity release ball, a voltage reduction unit and a voltage comparison unit, a first end of the voltage reduction unit is connected with the static electricity release ball, a second end of the voltage reduction unit is connected with an input end of the voltage comparison unit, an output end of the voltage comparison unit is connected with a first input end of the first control unit, and a power supply end of the voltage comparison unit is connected with a power supply end of the voltage stabilization module.
6. The static elimination circuit according to claim 1, wherein the human body detection module further comprises a warning light unit, an input end of the warning light unit is connected with a power supply end of the voltage stabilization module, and an output end of the second control unit is connected with the second input end of the first control unit through the warning light unit.
7. The static elimination circuit according to claim 6, wherein the indicator light unit comprises a resistor R12, a diode LED1 and a switch tube Q1, a first end of the resistor R12 is connected to the power supply terminal of the voltage stabilization module, a second end of the resistor R12 is connected to the anode of the diode LED1, the cathode of the diode LED1 is connected to the input terminal of the switch tube Q1 and the second input terminal of the first control unit, respectively, the controlled terminal of the switch tube Q1 is connected to the output terminal of the second control unit, and the output terminal of the switch tube Q1 is grounded.
8. The static elimination circuit according to claim 1, wherein the voice module comprises a third control unit, a switch tube Q2 and a speaker, an input terminal of the third control unit is connected to the output terminal of the first control unit, an output terminal of the third control unit is connected to the controlled terminal of the switch tube Q2, an input terminal of the switch tube Q2 is connected to the output terminal of the speaker, an output terminal of the switch tube Q2 is grounded, and an input terminal of the speaker and a power supply terminal of the third control unit are respectively connected to the power supply terminals of the voltage stabilization module.
9. A static-electricity-eliminating apparatus comprising the static-electricity-eliminating circuit according to any one of claims 1 to 8.
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|---|---|---|---|
| CN202121666942.5U CN215898069U (en) | 2021-07-21 | 2021-07-21 | Static elimination circuit and device |
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|---|---|---|---|
| CN202121666942.5U CN215898069U (en) | 2021-07-21 | 2021-07-21 | Static elimination circuit and device |
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| CN215898069U true CN215898069U (en) | 2022-02-22 |
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