CN203616382U - Safety electroscope and discharger - Google Patents
Safety electroscope and discharger Download PDFInfo
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- CN203616382U CN203616382U CN201320642789.1U CN201320642789U CN203616382U CN 203616382 U CN203616382 U CN 203616382U CN 201320642789 U CN201320642789 U CN 201320642789U CN 203616382 U CN203616382 U CN 203616382U
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Abstract
The utility model provides a safety electroscope and discharger for electrical inspection and electric discharg of a capacitive device. The safety electroscope and discharger includes: a ceramic discharge tube for discharging when the voltage of the capacitive device is too high; a voltage division circuit, an isolating circuit, a boosted circuit, a comparison circuit and an alarm indication circuit sequentially connected with the a ceramic discharge tube. The embodiment of the utility model provides a electroscope and discharger, the capacitive device is reliabely disconnected from a power grid, and the appropriate electroscope voltage level is used for electrical inspection to be determined after no connection to the power grid, the electroscope and discharger is based on the principle of a voltage comparison, according to contrast with a potential size of a residual voltage and a safe voltage 12V to indicate and alarm.
Description
Technical field
The utility model relates to electrical equipment field, relates in particular a kind of safe electrical verification and electric discharge device.
Background technology
High-voltage parallel capacitor device is being brought into play and is being improved power factor, raising system stability and energy-saving and cost-reducing effect, widespread use in modern power network in electric system.Because capacitor is an energy storage device, when normal operation, storing a large amount of energy, capacitor device need to carry out routine monitor or out of service because of fault after, the energy demand of capacitor stores takes certain means to discharge, if this energy can not effectively discharge, can cause certain electric shock to maintainer.
High-voltage parallel capacitor device generally all disposes discharge device-discharge coil in parallel with capacitor group, and in addition, discharge resistance is generally all contained in inner fuse capacitor inside, the electric charge of capacitor stores can be discharged into a lower level.But the voltage of the capacitor remnants after discharging through discharge device all still likely exceedes the safe voltage of 12V.In addition, high-voltage parallel capacitor device is generally installed electrification display and comes the busbar voltage of display device, the Secondary Winding side of discharge coil is connected with discharge indicating lamp indicates the voltage of residual charge, but whether discharge indicating lamp can not show this voltage and be reduced to below safe voltage 12V, still leave potential safety hazard.Therefore, whether detect capacitor group or single capacitor residual voltage lower than safe voltage, for improving maintenance safety measure, protection maintainer's life security is significant.
At present, can electrical verification the device of electric discharge only have high voltage electroscope, but high voltage electroscope can only be tested alternating current more than 90V, exceed the safe range of human body, under this voltage, if overhaul construction, still have the possibility of electric shock, and measurement means below 90V at present operable be the instruments such as multimeter, the measuring accuracy of multimeter is good, has liquid crystal display, but the operation of multimeter required gear, complicated operation, and there is no alarm indication function.
Utility model content
Whether the object of the utility model embodiment is to provide a kind of safe electrical verification and electric discharge device, for detection of the residual voltage of the capacitive apparatus such as capacitor and high-tension cable, and can indicate the residual voltage of capacitive apparatus lower than safe voltage.
A kind of safe electrical verification and electric discharge device, for electrical verification and the electric discharge of capacitive apparatus, comprising:
In the time of described capacitive apparatus overtension, for the ceramic discharge tube discharging;
The bleeder circuit, buffer circuit, booster circuit, comparator circuit and the warning indicating circuit that are connected successively with described ceramic discharge tube.
Preferably, in above-mentioned safe electrical verification and electric discharge device, described bleeder circuit comprises the first resistance and the second resistance;
One end of described the first resistance is connected with the first end of described ceramic discharge tube, and the other end is connected with the first end of described the second resistance, and the first end of described the second resistance is also connected with described buffer circuit;
The second end of described the second resistance is connected with the second end of described ceramic discharge tube.
Preferably, in above-mentioned safe electrical verification and electric discharge device, described buffer circuit comprises the first operational amplifier;
The in-phase input end of described the first operational amplifier is connected with the first end of described the second resistance, and the output terminal of described the first operational amplifier is connected with inverting input;
Described output terminal is also connected with described booster circuit.
Preferably, in above-mentioned safe electrical verification and electric discharge device, described booster circuit comprises the second operational amplifier, the 3rd operational amplifier, the 3rd resistance, the 4th resistance, the first divider resistance and the second divider resistance;
The first end of described the first divider resistance with connect positive 5V voltage and be connected, the second end is connected with the first end of described the second divider resistance, the second end ground connection of described the second divider resistance, the first end of described the second divider resistance is connected with the in-phase input end of described the second operational amplifier;
The output terminal of described the second operational amplifier is connected with the inverting input of self, the output terminal of described the second operational amplifier is also connected with the in-phase input end of described the 3rd operational amplifier by described the 3rd resistance, and the in-phase input end of described the 3rd operational amplifier is also connected with the output terminal of described the first operational amplifier by described the 4th resistance;
The inverting input of described the 3rd operational amplifier is connected with the output terminal of self, and the output terminal of described the 3rd operational amplifier is connected with comparator circuit.
Preferably, in above-mentioned safe electrical verification and electric discharge device, described comparator circuit comprises the first comparer, the second comparer, the first diode, the second diode, the first adjustable resistance, the second adjustable resistance, the first pull-up resistor and the second pull-up resistor;
One end of described the first adjustable resistance is connected with the normal phase input end of described the first comparer, other end ground connection;
The normal phase input end of described the first comparer also connects positive 5V voltage, and the inverting input of described the first comparer is connected with the output terminal of described the 3rd operational amplifier, and the output terminal of described the first comparer connects positive 5V voltage by described the first pull-up resistor;
The normal phase input end of described the second comparer is connected with the output terminal of described the 3rd operational amplifier, the inverting input of the second comparer U5 is by the second adjustable resistance R16 ground connection, the inverting input of the second comparer U5 also meets positive 5V by resistance R 14 simultaneously, the output terminal of the second comparer U5 with connect positive 5V voltage by the second pull-up resistor R6;
The anodic bonding of the output terminal of described the first comparer and described the first diode, the anodic bonding of the output terminal of described the second comparer and described the second diode;
The negative electrode of the negative electrode of described the first diode and the second diode connects, and link is connected with described warning indicating circuit.
Preferably, in above-mentioned safe electrical verification and electric discharge device, described warning indicating circuit comprises green LED, red LED, hummer, four-operational amplifier, the first triode, the second triode, the 3rd triode;
The normal phase input end of described four-operational amplifier is connected with the negative electrode of described the first diode, the output terminal of described four-operational amplifier is connected with the inverting input of described four-operational amplifier, the output terminal of described four-operational amplifier is also connected with the base stage of described the first triode, the output terminal of described four-operational amplifier and the anodic bonding of described green LED, the plus earth of described green LED;
The collector of described the first triode connects positive 5V voltage, the grounded emitter of described the first triode;
The base stage of described the second triode is connected with the collector of described the first triode, the grounded emitter of described the second triode, and the collector of described the second triode is connected with the negative electrode of described red LED, and the anode of described red LED connects positive 5V voltage;
The base stage of described the 3rd triode is connected with the output terminal of described four-operational amplifier, the grounded emitter of described the 3rd triode, and the collector of described the 3rd triode is connected with described hummer.
Preferably, in above-mentioned safe electrical verification and electric discharge device, also comprise the 3rd diode, described the 3rd diode is in parallel with described green LED, and described the 3rd anode of diode and the negative electrode of described green LED are connected, described the 3rd negative electrode of diode and the anodic bonding of described green LED.
Preferably, in above-mentioned safe electrical verification and electric discharge device, also comprise the 4th diode, described the 4th diode is in parallel with described hummer, and the anode of described the 4th diode is connected with the collector of described the 3rd triode, and the negative electrode of described the 4th diode connects 5V voltage.
Preferably, in above-mentioned safe electrical verification and electric discharge device, described the first operational amplifier, the second operational amplifier, the 3rd operational amplifier Wei Si road operational amplifier.
Preferably, in above-mentioned safe electrical verification and electric discharge device, described four-operational amplifier Wei Si road operational amplifier.
Safe electrical verification and electric discharge device that the utility model embodiment provides, reliably disconnect from electrical network at capacitive apparatus, and the electroscope that uses relevant voltage grade carry out electrical verification determine with electrical network without after being connected, safe electrical verification and electric discharge device are based on voltage ratio principle, according to the contrast of residual voltage and safe voltage 12V electromotive force size, indicate and report to the police.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
The safe electrical verification that Fig. 1 provides for the utility model embodiment and a kind of structural representation of electric discharge device;
The safe electrical verification that Fig. 2 provides for the utility model embodiment and a kind of circuit diagram of electric discharge device.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of safe electrical verification and electric discharge device, for electrical verification and the electric discharge of capacitive apparatus, bleeder circuit 2, buffer circuit 3, booster circuit 4, comparator circuit 5 and warning indicating circuit 6 that safe electrical verification and electric discharge device comprise ceramic discharge tube 1, are connected successively with ceramic discharge tube 1.
In the time of capacitive apparatus overtension, ceramic discharge tube 1, for overtension electric discharge, plays holding circuit.Also do not make at present the device of voltage checking of ceramic discharge tube.
Reliably disconnect from electrical network at capacitive apparatus, and the electroscope that uses relevant voltage grade carry out electrical verification determine with electrical network without after being connected, safe electrical verification and electric discharge device, based on voltage ratio principle, according to the contrast of residual voltage and safe voltage 12V electromotive force size, are indicated and report to the police.
Referring to Fig. 2, the utility model embodiment shows a kind of circuit diagram of ceramic discharge tube 1, bleeder circuit 2, buffer circuit 3, booster circuit 4, comparator circuit 5 and warning indicating circuit 6.Ceramic discharge tube 1 is in parallel with capacitive apparatus 7, during for overtension, discharges, and plays holding circuit.
Bleeder circuit 2 comprises the first resistance R 1 and the second resistance R 2.One end of the first resistance R 1 is connected with the first end of ceramic discharge tube 1, and the other end of the first resistance R 1 is connected with the first end of the second resistance R 2, and the first end of the second resistance R 2 is also connected with buffer circuit 3; The second end of the second resistance R 2 is connected with the second end of ceramic discharge tube 1.The first resistance R 1 and the second resistance R 2 form bleeder circuit, by dropping to suitable size by the voltage of ceramic discharge tube 1, relatively use for computing, and wherein, it is the resistance of 51K Ω that the first resistance R 1 can be selected resistance, and the second resistance R 2 can be selected the resistance of 1K Ω.
Buffer circuit 3 comprises the first operational amplifier U1.The first connect+5V of operational amplifier U1 ,-5V voltage.The in-phase input end of the first operational amplifier U1 is connected with the first end of the second resistance R 2, and the output terminal of the first operational amplifier U1 is connected with the inverting input of self; The output terminal of the first operational amplifier U1 is also connected with booster circuit 4.Wherein, the first operational amplifier U1 can select LM324 amplifier, and the first operational amplifier U1 plays isolation in circuit, prevents the calculating comparison of front end impedance influences subsequent conditioning circuit.
Booster circuit 4 comprises the second operational amplifier U2, the 3rd operational amplifier U3, the 3rd resistance R 3, the 4th resistance R 4, the first divider resistance R11 and the second divider resistance R12.
The first end of the first divider resistance R11 with connect positive 5V voltage and be connected, the second end of the first divider resistance R11 is connected with the first end of the second divider resistance R12, the second end ground connection of the second divider resistance R12, the first end of the second divider resistance R12 is connected with the in-phase input end of the second operational amplifier U2.
The output terminal of the second operational amplifier U2 is connected with the inverting input of self, the output terminal of the second operational amplifier U2 is also connected with the in-phase input end of the 3rd operational amplifier U3 by the 3rd resistance R 3, and the in-phase input end of the 3rd operational amplifier U3 is also connected with the output terminal of the first operational amplifier U1 by the 4th resistance R 4.
The inverting input of the 3rd operational amplifier U3 is connected with the output terminal of self, and the output terminal of the 3rd operational amplifier U3 is connected with comparator circuit 5.
Wherein, the 3rd resistance R 3 can select resistance be resistance, the 4th resistance R 4 of 20K Ω can select resistance be resistance, the first divider resistance R11 of 20K Ω can to select resistance be the resistance of 3M Ω, and the second divider resistance R12 can to select resistance be the resistance of 3M Ω.
R11 and R12 are bleeder circuit, and U2 plays buffer action, R11, R12, U2 together with R3, R4, U3 by input voltage lifting 2V.
Comparator circuit 5 comprises the first comparer U4, the second comparer U5, the first diode D1, the second diode D1, the first adjustable resistance R15, the second adjustable resistance R16, the first pull-up resistor R5 and the second pull-up resistor R6.Wherein, can to select nominal value be that can to select nominal value be that can to select resistance be that can to select resistance be the resistance of 10K Ω for resistance, the second pull-up resistor R6 of 10K Ω for resistance, the first pull-up resistor R5 of 100K Ω for potentiometer, the second adjustable resistance R16 of 10K Ω to the first adjustable resistance R15.The first comparer U4 and the second comparer U5 can select LM393 comparer.
One end of the first adjustable resistance R15 is connected with the normal phase input end of the first comparer U4, the first adjustable resistance R15 other end ground connection.
The normal phase input end of the first comparer U4 can connect positive 5V voltage by resistance R 13, and the inverting input of the first comparer U4 is connected with the output terminal of the 3rd operational amplifier U3, and the output terminal of the first comparer U4 connects positive 5V voltage by the first pull-up resistor R5.It is the resistance of 20K Ω that resistance R 13 can be selected resistance.
The normal phase input end of the second comparer U5 is connected with the output terminal of the 3rd operational amplifier U3, the inverting input of the second comparer U5 is by the second adjustable resistance R16 ground connection, the inverting input of the second comparer U5 also meets positive 5V by resistance R 14 simultaneously, the output terminal of the second comparer U5 with connect positive 5V voltage by the second pull-up resistor R6.It is the resistance of 20K Ω that resistance R 14 can be selected resistance.
The anodic bonding of the output terminal of the first comparer U4 and the first diode D1, the anodic bonding of the output terminal of the second comparer U5 and the second diode D2.
The negative electrode of the negative electrode of the first diode D1 and the second diode D2 connects, and link is connected with warning indicating circuit 6.
The first comparer U4, the second comparer U5 can select LM393 comparer, U4 and U5 are by regulating adjustable resistance R15 and R16 to regulate the size of alarm voltage as 12V or 24V, U4 and U5 are for opening drain electrode output, can not export high level, therefore increase R5 and R6 as pull-up resistor, diode D1 and D2 act as the output phase mutual interference that prevents comparer.
Warning indicating circuit 6 comprises green LED 61, red LED 62, hummer LS1, four-operational amplifier U6, the first triode Q1, the second triode Q2, the 3rd triode Q3.
The normal phase input end of four-operational amplifier U6 is connected with the negative electrode of the first diode D1, the output terminal of four-operational amplifier U6 is connected with the inverting input of four-operational amplifier U6, the output terminal of four-operational amplifier U6 is also connected with the base stage of the first triode Q1 by resistance R 8, the output terminal of four-operational amplifier U6 also with the anodic bonding of green LED 61, the negative electrode of green LED 61 is by R7 ground connection.It is the resistance of 200 Ω that resistance R 7 can be selected resistance, and it is the resistance of 2K Ω that resistance R 8 can be selected resistance.
The collector of the first triode Q1 connects positive 5V voltage, the grounded emitter of the first triode Q1 by resistance R 9.It is the resistance of 10K Ω that resistance R 9 can be selected resistance.It is the resistance of 2K Ω that resistance R 10 can be selected resistance.
The base stage of the second triode Q2 is connected with the collector of the first triode Q1 by resistance R 10, the grounded emitter of the second triode Q2, the collector of the second triode Q2 is connected with the negative electrode of red LED 62, and the anode of red LED 62 connects positive 5V voltage with crossing resistance R 11.It is the resistance of 200 Ω that resistance R 11 can be selected resistance,
The base stage of the 3rd triode Q3 is connected with the output terminal of four-operational amplifier U6 by resistance R 17, the grounded emitter of the 3rd triode Q3, and the collector of the 3rd triode Q3 is connected with hummer LS1.It is the resistance of 1K Ω that resistance R 17 can be selected resistance.
The Main Function of U6 drives green LED exactly, and the Main Function of Q1 and Q2 is to drive red LED, and the Main Function of Q3 is to drive hummer sounding.
Further, device also comprises the 3rd diode D3, and the 3rd diode D3 is in parallel with green LED 61, and the anode of the 3rd diode D3 is connected with the negative electrode of green LED 61, the anodic bonding of the negative electrode of the 3rd diode D3 and green LED 61.
Further, device also comprises the 4th diode D4, and the 4th diode D4 is in parallel with hummer LS1, and the anode of the 4th diode D4 is connected with the collector of the 3rd triode Q3, and the negative electrode of the 4th diode D4 connects 5V voltage.
Because hummer is perceptual device, when shutoff, may produce reverse induction electric current, therefore increase D4 is fly-wheel diode.
In other embodiment of the present utility model, above-mentioned the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, four-operational amplifier can Wei Si road operational amplifiers.
If capacitive apparatus is as the both end voltage of capacitor during higher than 75V, ceramic discharge tube 1 conducting, capacitor is now equivalent to short circuit dischange, in condenser voltage drops to 75V time, ceramic discharge tube 1 turn-offs, and the first resistance R 1 and the second resistance R 2 are carried out dividing potential drop, after the comparator circuit 5 of buffer circuit 3, booster circuit 4, employing comparer, when capacitor voltage at both ends is during higher than 12V, operational amplifier drives green LED 61 bright; When condenser voltage is during lower than 12V, red LED 62 is bright.
The main power consumption of circuit is red green LED and hummer, LED electric current be 15mA/ only, hummer 20mA, the quiescent current of amplifier LM324 and comparer LM393 and be 2.2mA; This circuit maximum current can not exceed 40mA, because red green LED can be simultaneously not bright.
While using this device, first by the neutral ground of capacitor, the earth terminal ground connection of device, is articulated to the measuring junction of device another utmost point of capacitor; If generation superpotential, can observe and be accompanied by flash of light in ceramic discharge tube; In the time that this discharge tube damages, can distinguish from outward appearance.In addition, ceramic discharge tube can be arranged separately in to convenient observation in a transparency cabin.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
Finally, also it should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. safe electrical verification and an electric discharge device, for electrical verification and the electric discharge of capacitive apparatus, is characterized in that, comprising:
In the time of described capacitive apparatus overtension, for the ceramic discharge tube discharging;
The bleeder circuit, buffer circuit, booster circuit, comparator circuit and the warning indicating circuit that are connected successively with described ceramic discharge tube.
2. safe electrical verification according to claim 1 and electric discharge device, is characterized in that, described bleeder circuit comprises the first resistance and the second resistance;
One end of described the first resistance is connected with the first end of described ceramic discharge tube, and the other end is connected with the first end of described the second resistance, and the first end of described the second resistance is also connected with described buffer circuit;
The second end of described the second resistance is connected with the second end of described ceramic discharge tube.
3. safe electrical verification according to claim 2 and electric discharge device, is characterized in that, described buffer circuit comprises the first operational amplifier;
The in-phase input end of described the first operational amplifier is connected with the first end of described the second resistance, and the output terminal of described the first operational amplifier is connected with inverting input;
Described output terminal is also connected with described booster circuit.
4. safe electrical verification according to claim 3 and electric discharge device, is characterized in that, described booster circuit comprises the second operational amplifier, the 3rd operational amplifier, the 3rd resistance, the 4th resistance, the first divider resistance and the second divider resistance;
The first end of described the first divider resistance with connect positive 5V voltage and be connected, the second end is connected with the first end of described the second divider resistance, the second end ground connection of described the second divider resistance, the first end of described the second divider resistance is connected with the in-phase input end of described the second operational amplifier;
The output terminal of described the second operational amplifier is connected with the inverting input of self, the output terminal of described the second operational amplifier is also connected with the in-phase input end of described the 3rd operational amplifier by described the 3rd resistance, and the in-phase input end of described the 3rd operational amplifier is also connected with the output terminal of described the first operational amplifier by described the 4th resistance;
The inverting input of described the 3rd operational amplifier is connected with the output terminal of self, and the output terminal of described the 3rd operational amplifier is connected with comparator circuit.
5. safe electrical verification according to claim 4 and electric discharge device, it is characterized in that, described comparator circuit comprises the first comparer, the second comparer, the first diode, the second diode, the first adjustable resistance, the second adjustable resistance, the first pull-up resistor and the second pull-up resistor;
One end of described the first adjustable resistance is connected with the normal phase input end of described the first comparer, other end ground connection;
The normal phase input end of described the first comparer also connects positive 5V voltage, and the inverting input of described the first comparer is connected with the output terminal of described the 3rd operational amplifier, and the output terminal of described the first comparer connects positive 5V voltage by described the first pull-up resistor;
The normal phase input end of described the second comparer is connected with the output terminal of described the 3rd operational amplifier, the inverting input of the second comparer U5 is by the second adjustable resistance R16 ground connection, the inverting input of the second comparer U5 also meets positive 5V by resistance R 14 simultaneously, the output terminal of the second comparer U5 with connect positive 5V voltage by the second pull-up resistor R6;
The anodic bonding of the output terminal of described the first comparer and described the first diode, the anodic bonding of the output terminal of described the second comparer and described the second diode;
The negative electrode of the negative electrode of described the first diode and the second diode connects, and link is connected with described warning indicating circuit.
6. safe electrical verification according to claim 5 and electric discharge device, is characterized in that, described warning indicating circuit comprises green LED, red LED, hummer, four-operational amplifier, the first triode, the second triode, the 3rd triode;
The normal phase input end of described four-operational amplifier is connected with the negative electrode of described the first diode, the output terminal of described four-operational amplifier is connected with the inverting input of described four-operational amplifier, the output terminal of described four-operational amplifier is also connected with the base stage of described the first triode, the output terminal of described four-operational amplifier and the anodic bonding of described green LED, the plus earth of described green LED;
The collector of described the first triode connects positive 5V voltage, the grounded emitter of described the first triode;
The base stage of described the second triode is connected with the collector of described the first triode, the grounded emitter of described the second triode, and the collector of described the second triode is connected with the negative electrode of described red LED, and the anode of described red LED connects positive 5V voltage;
The base stage of described the 3rd triode is connected with the output terminal of described four-operational amplifier, the grounded emitter of described the 3rd triode, and the collector of described the 3rd triode is connected with described hummer.
7. safe electrical verification according to claim 6 and electric discharge device, it is characterized in that, also comprise the 3rd diode, described the 3rd diode is in parallel with described green LED, and described the 3rd anode of diode and the negative electrode of described green LED are connected, described the 3rd negative electrode of diode and the anodic bonding of described green LED.
8. safe electrical verification according to claim 6 and electric discharge device, it is characterized in that, also comprise the 4th diode, described the 4th diode is in parallel with described hummer, and the anode of described the 4th diode is connected with the collector of described the 3rd triode, and the negative electrode of described the 4th diode connects 5V voltage.
9. safe electrical verification according to claim 4 and electric discharge device, is characterized in that, described the first operational amplifier, the second operational amplifier, the 3rd operational amplifier Wei Si road operational amplifier.
10. according to safe electrical verification and electric discharge device described in claim 6 or 7 or 8, it is characterized in that described four-operational amplifier Wei Si road operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642789.1U CN203616382U (en) | 2013-10-16 | 2013-10-16 | Safety electroscope and discharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642789.1U CN203616382U (en) | 2013-10-16 | 2013-10-16 | Safety electroscope and discharger |
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| Publication Number | Publication Date |
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| CN203616382U true CN203616382U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642789.1U Expired - Fee Related CN203616382U (en) | 2013-10-16 | 2013-10-16 | Safety electroscope and discharger |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499730A (en) * | 2013-10-16 | 2014-01-08 | 国网山东省电力公司青岛供电公司 | Safety electricity testing and discharging device |
| CN106353566A (en) * | 2016-10-21 | 2017-01-25 | 迪弗斯科技股份有限公司 | High-voltage electrostatic induction unit and energy output display method thereof |
| CN106645890A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | High voltage electroscopic system |
| CN106645891A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | Power grid high-voltage line live part verification method |
-
2013
- 2013-10-16 CN CN201320642789.1U patent/CN203616382U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499730A (en) * | 2013-10-16 | 2014-01-08 | 国网山东省电力公司青岛供电公司 | Safety electricity testing and discharging device |
| CN106353566A (en) * | 2016-10-21 | 2017-01-25 | 迪弗斯科技股份有限公司 | High-voltage electrostatic induction unit and energy output display method thereof |
| CN106645890A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | High voltage electroscopic system |
| CN106645891A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | Power grid high-voltage line live part verification method |
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