CN204807618U - Electroscope - Google Patents
Electroscope Download PDFInfo
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- CN204807618U CN204807618U CN201520279271.5U CN201520279271U CN204807618U CN 204807618 U CN204807618 U CN 204807618U CN 201520279271 U CN201520279271 U CN 201520279271U CN 204807618 U CN204807618 U CN 204807618U
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- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
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- 238000009530 blood pressure measurement Methods 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses an electroscope, this electroscope includes: test contact, hand touch electrode, power and electronic circuit board, wherein, the electronic circuit board includes: test the circuit for carry out live test, the electronic circuit board still include following one of at least: break -make test circuit, constant -current source circuit, lighting circuit, wherein, break -make test circuit is used for carrying out the on off test, and the constant -current source circuit is used for exporting constant current power supply, and lighting circuit is used for the illumination. Through the utility model discloses, the problem of testing the electrography function singleness in the correlation technique of having solved.
Description
Technical field
The utility model relates to circuit field, in particular to a kind of electroscope.
Background technology
Electroscope is the instrument that electrical repair is conventional, electroscope function singleness conventional at present, can only testing power supply or electric appliance casing whether charged, and to be shown test results by neon bulb lamp or liquid crystal display.Shown test results by neon bulb lamp or liquid crystal display comparatively large by external light influence, observe difficulty when extraneous light is stronger, test result display is not obvious.When also needing in electrical repair process to carry out switching test, multimeter need be changed and test, using very inconvenient.In addition, when utilizing the switching of electrical equipment of multimeter test pack containing electrical contact, such as, relay, because the resistance grade output voltage of multimeter is on the low side, easily causes the oxide film that can not puncture between electrical contact and makes test result inaccurate.
For the problem of electroscope function singleness in correlation technique, at present effective solution is not yet proposed.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of electroscope, to solve the problem of electroscope function singleness in correlation technique.
To achieve these goals, the utility model provides a kind of electroscope.Comprise test contact, hand touched electrode, power supply and electronic circuit board according to electroscope of the present utility model, wherein, electronic circuit board comprises: electrical circuit inspection, for performing live testing; Electronic circuit board also comprise following one of at least: on off test circuit, constant-current source circuit, lighting circuit, wherein, on off test circuit is for performing on off test, and constant-current source circuit is used for output constant current power supply, and lighting circuit is used for illumination.
Further, electrical circuit inspection comprises: the first resistance, and wherein, the first end of the first resistance is connected to test contact, and the second end of the first resistance is connected to hand touched electrode via the second resistance; First electric capacity, is connected in parallel to the two ends of the first resistance; First triode, wherein, the base stage of the first triode is connected to hand touched electrode via the second resistance, and the emitter of the first triode is connected to power supply; Second triode, wherein, the base stage of the second triode is connected to the emitter of the first triode, and the emitter of the second triode is connected to test contact; And first indicating circuit, wherein, the first end of the first indicating circuit is connected to the collector of the second triode, and the second end of the first indicating circuit is connected to power supply, and wherein, the first indicating circuit is used to indicate the result that electrical circuit inspection performs live testing.
Further, the first indicating circuit comprises: the 3rd resistance; And first light emitting diode, wherein, the anode of the first light emitting diode is connected to power supply via the 3rd resistance, and the negative electrode of the first light emitting diode is connected to the collector of the second triode.
Further, the first indicating circuit also comprises: hummer, and wherein, the first end of hummer is connected to the negative electrode of the first light emitting diode, and the second end of hummer is connected to the collector of the second triode; And second electric capacity, be connected in parallel to the two ends of hummer.
Further, electroscope also comprises slotted line, and on off test circuit comprises: the first diode, and wherein, the negative electrode of the first diode is connected to slotted line; And second indicating circuit, wherein, the first end of the second indicating circuit is connected to the anode of the first diode, and the second end of the second indicating circuit is connected to power supply, and wherein, the second indicating circuit is used to indicate the result that on off test circuit performs on off test.
Further, electroscope also comprises slotted line, and constant-current source circuit comprises: the second diode, and wherein, the anode of the second diode is connected to power supply, and the negative electrode of the second diode is connected to slotted line via the 4th resistance; And the 3rd triode, wherein, the base stage of the 3rd triode is connected to the negative electrode of the second diode, and the emitter of the 3rd triode is connected to power supply via the 5th resistance, and the collector of the 3rd triode is connected to slotted line.
Further, constant-current source circuit also comprises the second light emitting diode, and wherein, the negative electrode of the second light emitting diode is connected to test contact, and the anode of the second light emitting diode is connected to the collector of the 3rd triode.
Further, lighting circuit comprises: the 3rd light emitting diode, and wherein, the anode of the 3rd light emitting diode is connected to the positive pole of power supply, and the negative electrode of the 3rd light emitting diode is connected to the negative pole of power supply via the 6th resistance.
Further, electroscope also comprises switch, wherein, when switch is in primary importance, electroscope is for performing live testing and/or on off test, and when switch is in the second place, electroscope is used for output constant current power supply, when switch is in the 3rd position, electroscope is used for illumination.
Further, power supply and electronic circuit board are packaged in insulation crust.
By the utility model, adopt the electroscope comprising following structure: test contact, hand touched electrode, power supply and electronic circuit board, wherein, electronic circuit board comprises: electrical circuit inspection, for performing live testing; Electronic circuit board also comprise following one of at least: on off test circuit, constant-current source circuit, lighting circuit, wherein, on off test circuit is for performing on off test, constant-current source circuit is used for output constant current power supply, lighting circuit is used for illumination, solve the problem of electroscope function singleness in correlation technique, and then reach the effect improving electric test convenience.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the galvanoscopic structural representation according to the utility model embodiment;
Fig. 2 is the galvanoscopic circuit diagram according to the utility model embodiment; And
Fig. 3 is the galvanoscopic schematic appearance according to the utility model embodiment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The application's scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the embodiment of the application's part, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
It should be noted that, term " first ", " second " etc. in the instructions of the application and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged, in the appropriate case so that the embodiment of the application described herein.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
The utility model embodiment provides a kind of electroscope.Fig. 1 is the galvanoscopic structural representation according to the utility model embodiment.
As shown in Figure 1, the electroscope of the utility model embodiment comprises: test contact 9, hand touched electrode 8, power supply 6 and electronic circuit board, and wherein, this electronic circuit board comprises: electrical circuit inspection 2, for performing live testing.This electronic circuit board also comprise following one of at least: on off test circuit 5, constant-current source circuit 3, lighting circuit 4, wherein, on off test circuit 5 is for performing on off test, and constant-current source circuit 3 is for output constant current power supply, and lighting circuit 4 is for illumination.
Alternatively, the electroscope of the utility model embodiment can also comprise indicating circuit 1, indicating circuit 1 can be connected with any one or more in electrical circuit inspection 2, on off test circuit 5 and constant-current source circuit 3, thus indicate the operating result of the circuit module be connected with this indicating circuit 1, such as, indicating circuit 1 can indicate the test result of electrical circuit inspection 2, and indicating circuit 1 also can indicate constant-current source circuit 3 whether output constant current power supply etc.Power supply 6 is powered for giving each circuit module of electroscope of the utility model embodiment, and alternatively, power supply 6 can be battery.Alternatively, when the electroscope of the utility model embodiment comprises on off test circuit 5 and/or constant-current source circuit 3, the electroscope of the utility model embodiment also comprises slotted line 10.
Not only there is according to the electroscope of the utility model embodiment the function performing live testing, also there is at least one function in the several functions such as on off test, output constant current power supply, illumination, solve the problem of electroscope function singleness in prior art.
Fig. 2 is the galvanoscopic circuit diagram according to the utility model embodiment, is described the electroscope of the utility model first embodiment below in conjunction with Fig. 2.
As shown in Figure 2, the electrical circuit inspection 2 of the utility model embodiment comprises: the first resistance R3, and wherein, the first end of the first resistance R3 is connected to test contact 9, and second end of the first resistance R3 is connected to hand touched electrode 8 via the second resistance; First electric capacity C1, is connected in parallel to the two ends of the first resistance R3; First triode VT1, wherein, the emitter that the base stage of the first triode VT1 is connected to hand touched electrode 8, first triode VT1 via the second resistance is connected to power supply 6; Second triode VT2, wherein, the base stage of the second triode VT2 is connected to the emitter of the first triode VT1, and the emitter of the second triode VT2 is connected to test contact 9; And first indicating circuit, wherein, the first end of the first indicating circuit is connected to the collector of the second triode VT2, and the second end of the first indicating circuit is connected to power supply 6, and the first indicating circuit is used to indicate the result that electrical circuit inspection 2 performs live testing.Alternatively, the second resistance can be made up of multiple resistance.
Preferably, perform the result of live testing to show electrical circuit inspection intuitively, the first indicating circuit comprises: the 3rd resistance R4; And first light emitting diode 12, wherein, the anode of the first light emitting diode 12 is connected to power supply 6 via the 3rd resistance R4, and the negative electrode of the first light emitting diode 12 is connected to the collector of the second triode VT2.Alternatively, the first light emitting diode is LED light emitting diode, and when electroscope detects that measured object is charged, the first lumination of light emitting diode, when electroscope detects that measured object is not charged, the first light emitting diode does not work.
Preferably, in order to avoid external light source is to the interference of the test result of electrical circuit inspection, the first indicating circuit also comprises: hummer 11, wherein, the first end of hummer 11 is connected to the negative electrode of the first light emitting diode 12, and the second end of hummer 11 is connected to the collector of the second triode VT2; And the second electric capacity C2, be connected in parallel to the two ends of hummer 11.Alternatively, hummer is miniature active buzzer, when electroscope detects that measured object is charged, and the first lumination of light emitting diode and buzzer rings, when electroscope detects that measured object is not charged, the not luminous and hummer not ring of the first light emitting diode.Jointly indicate electrical circuit inspection 2 to perform the result of live testing by the first light emitting diode and hummer, can effectively avoid external light source on the impact of the test result of electrical circuit inspection.
With an example, the principle of work that the electroscope of the utility model embodiment carries out live testing is described below, as shown in Figure 2, when utilization carries out live testing according to the electroscope of the utility model embodiment, staff touches hand touched electrode 8, test contact 9 contacts with measured object, if measured object is charged, electric current produces safe voltage via after the first resistance and the second electric resistance partial pressure, handle touched electrode 8 and form ground loop with human body, simultaneously for the first triode VT1 provides base current, first triode VT1 conducting, for the second triode VT2 provides base current after first triode VT1 conducting, second triode VT2 conducting, thus make the positive electrode current of power supply 6 by the 3rd resistance R4, first light emitting diode 12, hummer 11 flows to the negative pole of power supply 6, hummer 11 ring, first light emitting diode 12 is luminous, if measured object is not charged, then hummer 11, first light emitting diode 12 is reactionless.Above-mentioned first electric capacity C1 is shunt capacitance, and the second electric capacity C2 is the coupling electric capacity of hummer 11, and the 3rd resistance R4 is current-limiting resistance.
Preferably, conveniently to measured object execution path and out of circuit test, the electroscope of the utility model embodiment also comprises slotted line 10, and on off test circuit 5 comprises: the first diode D1, and wherein, the negative electrode of the first diode D1 is connected to slotted line 10; And second indicating circuit, wherein, the first end of the second indicating circuit is connected to the anode of the first diode D1, and the second end of the second indicating circuit is connected to power supply 6, and wherein, the second indicating circuit is used to indicate the result that on off test circuit 5 performs on off test.
Particularly, the second indicating circuit can be identical with the first indicating circuit, also can be not identical with the first indicating circuit.Preferably, in order to simplify the galvanoscopic circuit structure of the utility model first embodiment, second indicating circuit and the first indicating circuit are same circuit, namely the first indicating circuit both can indicate electrical circuit inspection 2 to perform the result of live testing, also may be used for indicating on off test circuit 5 to perform the result of on off test simultaneously.
Illustrate that the electroscope of the utility model embodiment carries out the principle of work of on off test with an example below, as shown in Figure 2, test contact 9 and slotted line 10 are connected to measured object two ends, the anode current of power supply 6 gets back to the negative pole of power supply 6 via the second indicating circuit, the first diode D1, slotted line 10, measured object and test contact 9, form test loop.Preferably, when the second indicating circuit and the first indicating circuit are same circuit, if measured object is path, then hummer 11 sounding and the first light emitting diode 12 is luminous, if measured object is open circuit, then hummer 11 not sounding and the first light emitting diode 12 is not luminous.Preferably, the first diode D1 is unidirectional blocking-up isolating diode, can prevent the mutual interference in galvanoscopic each function use procedure of the utility model embodiment.It should be noted that, the on off test circuit of the utility model embodiment can also be used for testing unilateal conduction characteristic.
Preferably, as shown in Figure 2, the electroscope of the utility model embodiment also comprises slotted line 10, constant-current source circuit 3 comprises: the second diode, wherein, the anode of the second diode is connected to power supply 6, and the negative electrode of the second diode is connected to slotted line 10 via the 4th resistance R5; And the 3rd triode VT3, wherein, the base stage of the 3rd triode VT3 is connected to the negative electrode of the second diode, and the emitter of the 3rd triode VT3 is connected to power supply 6 via the 5th resistance R6, and the collector of the 3rd triode VT3 is connected to slotted line 10.
Second diode of the utility model embodiment is used for providing stable base bias voltage for the 3rd triode VT3, and alternatively, the number of the second diode can be multiple.3rd triode VT3 can be constant current adjustment triode, and the 4th resistance R5 is the biasing resistor of the 3rd triode VT3 base loop, and the 5th resistance R6 is the emitter resistance of the 3rd triode VT3, is used for adjusting the size of current of constant current source.Measured object two ends are connected with slotted line 10 with test contact 9 respectively, constant-current source circuit 3 can provide a constant current source for measured object, particularly, when maintenance simulation instrument or frequency converter, by the injection of constant current source electric current, whether normally its work can be tested fast.
Preferably, in order to the constant-current source circuit intuitively showing the utility model embodiment outputs constant current source, this constant-current source circuit 3 also comprises the second light emitting diode 13, wherein, the negative electrode of the second light emitting diode 13 is connected to test contact 9, and the anode of the second light emitting diode 13 is connected to the collector of the 3rd triode VT3.If constant-current source circuit success output constant current power supply, then the second light emitting diode 13 is luminous, if constant-current source circuit fails output constant current power supply, then the second light emitting diode 13 is not luminous.
Preferably, as shown in Figure 2, the lighting circuit 4 of the utility model embodiment comprises: the 3rd light emitting diode, wherein, the anode of the 3rd light emitting diode is connected to the positive pole of power supply 6, and the negative electrode of the 3rd light emitting diode is connected to the negative pole of power supply 6 via the 6th resistance R7.Wherein, the 3rd light emitting diode can comprise multiple light emitting diode, and the 3rd light emitting diode switches on power luminous after 6 thus realizes illumination, and the 6th resistance R7 is current-limiting resistance.
Preferably, on-off circuit can be set respectively in the electrical circuit inspection 2 of the utility model embodiment, on off test circuit 5, constant-current source circuit 3, lighting circuit 4 to facilitate the Kai Heguan of the galvanoscopic difference in functionality controlling the utility model embodiment.
Preferably, conveniently realize the switching of galvanoscopic difference in functionality, the electroscope of the utility model embodiment also comprises switch 7, wherein, when switch 7 is in primary importance, electroscope is for performing live testing and/or on off test, when switch is in the second place, electroscope is used for output constant current power supply, and when switch 7 is in the 3rd position, electroscope is used for illumination.
Particularly, as shown in Figure 2, constant-current source circuit 3 and lighting circuit 4 are connected to power supply 6 via switch 7, when switch 7 is positioned at middle position, the electroscope of the utility model embodiment can be used for performing live testing and/or on off test, when switch 7 is positioned at A position, constant-current source circuit 3 is connected to power supply 6, the electroscope of the utility model embodiment can in order to output constant current power supply, when switch 7 is positioned at B position, lighting circuit 4 is connected to power supply 6, and the electroscope of the utility model embodiment can in order to illumination.
Below in conjunction with Fig. 2, the electroscope of the utility model second embodiment is described.
As shown in Figure 2, power supply 6, hand touched electrode 8, test contact 9, switch 7, slotted line 10 and electronic circuit board is comprised according to the electroscope of the utility model second embodiment, wherein, electronic circuit board comprises indicating circuit 1, electrical circuit inspection 2, constant-current source circuit 3, lighting circuit 4 and on off test circuit 5.
Indicating circuit 1 may be used for the function realizing the first indicating circuit, also may be used for the function realizing the second indicating circuit simultaneously, namely indicating circuit 1 may be used for the test result indicating electrical circuit inspection 2 and on off test circuit 5, in addition, indicating circuit 1 can also be used to indicate constant-current source circuit 3 whether output constant current power supply.Particularly, indicating circuit 1 comprises the first light emitting diode 12, hummer 11, the 3rd resistance R4 and the second electric capacity C2.The anode of the first light emitting diode 12 is connected to power supply 6 via the 3rd resistance R4, and the negative electrode of the first light emitting diode 12 is connected to slotted line 10 via hummer 11, and the second electric capacity C2 is connected in parallel to the two ends of hummer 11.
Electrical circuit inspection 2 is for performing live testing, particularly, electrical circuit inspection 2 comprises the first resistance R3, second resistance, first electric capacity C1, first triode VT1 and triode VT2, wherein, the first end of the first resistance R3 is connected to test contact 9, second end of the first resistance R3 is connected to hand touched electrode 8 via the second resistance, first electric capacity C1 is connected in parallel to the two ends of the first resistance R3, the base stage of the first triode VT1 is connected to hand touched electrode 8 via the second resistance, the emitter of the first triode VT1 is connected to power supply 6, the base stage of the second triode VT2 is connected to the emitter of the first triode VT1, the emitter of the second triode VT2 is connected to test contact 9, the collector of the second triode VT2 is connected to hummer 11, second resistance can be made up of resistance R1 and resistance R2.
Constant-current source circuit 3 is for output constant current power supply, particularly, constant-current source circuit 3 comprises the second diode, 3rd triode VT3, 4th resistance R5, 5th resistance R6 and the second light emitting diode 13, the anode of the second diode is connected to the positive pole of power supply 6 via switch 7, the negative electrode of the second diode is connected to the anode of the second light emitting diode 13 via the 4th resistance R5, wherein, second diode can comprise diode D2 and diode D3, the base stage of the 3rd triode VT3 is connected to the negative electrode of the second diode, the emitter of the 3rd triode VT3 is connected to power supply 6 via the 5th resistance R6, the collector of the 3rd triode VT3 is connected to slotted line 10 via the second light emitting diode 13.
Lighting circuit 4 is for illumination, particularly, lighting circuit 4 comprises the 3rd light emitting diode, the anode of the 3rd light emitting diode is connected to the positive pole of power supply 6 via switch 7, the negative electrode of the 3rd light emitting diode is connected to the negative pole of power supply 6 via the 6th resistance R7, the 3rd light emitting diode comprises light emitting diode 14, light emitting diode 15 and light emitting diode 16.On off test circuit 5 is for performing on off test, and particularly, on off test circuit 5 comprises the first diode D1, and wherein, the negative electrode of the first diode D1 is connected to slotted line 10, and the anode of the first diode D1 is connected to hummer 11.
It should be noted that, above-mentioned switch 7 is for realizing the switching of the galvanoscopic several functions of the utility model embodiment, switch 7 can be small-sized toggle switch, particularly, as shown in Figure 2, when switch is positioned at middle position, the electroscope of the utility model embodiment is for performing live testing and/or on off test, when switch is positioned at A position, the electroscope of the utility model embodiment is used for output constant current power supply, when switch is positioned at B position, the electroscope of the utility model embodiment is used for illumination.
Alternatively, resistance R1, resistance R2 and the first resistance R3 can be 470k Ω, 3rd resistance R4 can be 5.1k Ω, 4th resistance R5 can be 10k Ω, 5th resistance R6 can be 47 Ω, 6th resistance R7 can be 150 Ω, power supply 6 can be 12V direct supply, first triode VT1 can be 9014 types, second triode VT2 can be 9013 types, 3rd triode VT3 can be 9012 types, first diode D1, diode D2 and diode D3 can be all IN4148 type, first electric capacity C1 can be 1000PF, second electric capacity C2 can be 100 μ F, first light emitting diode 12, second light emitting diode 13, light emitting diode 14, light emitting diode 15 and light emitting diode 16 can be all LED light emitting diode, hand touched electrode 8, test contact 9 and slotted line 10 can be all conducting metal.It should be noted that, the value of foregoing circuit element and model are not construed as limiting the utility model embodiment.
Fig. 3 is the galvanoscopic schematic appearance according to the utility model embodiment.As shown in Figure 3, the electroscope of the utility model embodiment is lip pencil, and power supply and electronic circuit board are packaged in insulation crust 17, and this insulation crust 17 can be plastic insulation shell.Insulation crust 17 is provided with multiple hole, as the vocal hole of hummer 11 and the lightening hole of the first light emitting diode 12, second light emitting diode 13, plastic casing 17 two ends install hand touched electrode 8 and test contact 9 respectively, and the side of plastic casing 17 is provided with slotted line 10.Power supply 6 can be battery, preferably, power supply 6 can be high performance 12V automobile remote controllers battery, switch 7 can be small-sized toggle switch, 3rd light emitting diode comprises light emitting diode 14, light emitting diode 15 and light emitting diode 16, and light emitting diode 14, light emitting diode 15 and light emitting diode 16 can be LED light emitting diodes.Hummer 11 can be miniature active buzzer.
The electroscope of the utility model embodiment not only can perform live testing, also can perform on off test, can be measured object and constant-current supply is provided and provides local lighting for operator, thus make need not go continually to change survey instrument in the work such as electrical repair, easy to use.In addition, the electroscope of the utility model embodiment can realize sound and light points out test result simultaneously, and solves the problem of contact oxidation film not conducting when low pressure measurement.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an electroscope, is characterized in that, described electroscope comprises test contact, hand touched electrode, power supply and electronic circuit board, wherein,
Described electronic circuit board comprises: electrical circuit inspection, for performing live testing;
Described electronic circuit board also comprise following one of at least: on off test circuit, constant-current source circuit, lighting circuit, wherein, described on off test circuit is for performing on off test, and described constant-current source circuit is used for output constant current power supply, and described lighting circuit is used for illumination.
2. electroscope according to claim 1, is characterized in that, described electrical circuit inspection comprises:
First resistance, wherein, the first end of described first resistance is connected to described test contact, and the second end of described first resistance is connected to described hand touched electrode via the second resistance;
First electric capacity, is connected in parallel to the two ends of described first resistance;
First triode, wherein, the base stage of described first triode is connected to described hand touched electrode via described second resistance, and the emitter of described first triode is connected to described power supply;
Second triode, wherein, the base stage of described second triode is connected to the emitter of described first triode, and the emitter of described second triode is connected to described test contact; And
First indicating circuit, wherein, the first end of described first indicating circuit is connected to the collector of described second triode, and the second end of described first indicating circuit is connected to described power supply, wherein, described first indicating circuit is used to indicate the result that described electrical circuit inspection performs live testing.
3. electroscope according to claim 2, is characterized in that, described first indicating circuit comprises:
3rd resistance; And
First light emitting diode, wherein, the anode of described first light emitting diode is connected to described power supply via described 3rd resistance, and the negative electrode of described first light emitting diode is connected to the collector of described second triode.
4. electroscope according to claim 3, is characterized in that, described first indicating circuit also comprises:
Hummer, wherein, the first end of described hummer is connected to the negative electrode of described first light emitting diode, and the second end of described hummer is connected to the collector of described second triode; And
Second electric capacity, is connected in parallel to the two ends of described hummer.
5. electroscope according to claim 1, is characterized in that, described electroscope also comprises slotted line, and described on off test circuit comprises:
First diode, wherein, the negative electrode of described first diode is connected to described slotted line; And
Second indicating circuit, wherein, the first end of described second indicating circuit is connected to the anode of described first diode, and the second end of described second indicating circuit is connected to described power supply, and described second indicating circuit is used to indicate the result that described on off test circuit performs on off test.
6. electroscope according to claim 1, is characterized in that, described electroscope also comprises slotted line, and described constant-current source circuit comprises:
Second diode, wherein, the anode of described second diode is connected to described power supply, and the negative electrode of described second diode is connected to described slotted line via the 4th resistance; And
3rd triode, wherein, the base stage of described 3rd triode is connected to the negative electrode of described second diode, and the emitter of described 3rd triode is connected to described power supply via the 5th resistance, and the collector of described 3rd triode is connected to described slotted line.
7. electroscope according to claim 6, it is characterized in that, described constant-current source circuit also comprises the second light emitting diode, wherein, the negative electrode of described second light emitting diode is connected to described test contact, and the anode of described second light emitting diode is connected to the collector of described 3rd triode.
8. electroscope according to claim 1, is characterized in that, described lighting circuit comprises:
3rd light emitting diode, wherein, the anode of described 3rd light emitting diode is connected to the positive pole of described power supply, and the negative electrode of described 3rd light emitting diode is connected to the negative pole of described power supply via the 6th resistance.
9. electroscope according to claim 1, it is characterized in that, described electroscope also comprises switch, wherein, when described switch is in primary importance, described electroscope is for performing live testing and/or on off test, when described switch is in the second place, described electroscope is used for output constant current power supply, and when described switch is in the 3rd position, described electroscope is used for illumination.
10. electroscope according to claim 1, is characterized in that, described power supply and described electronic circuit board are packaged in insulation crust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279271.5U CN204807618U (en) | 2015-04-30 | 2015-04-30 | Electroscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279271.5U CN204807618U (en) | 2015-04-30 | 2015-04-30 | Electroscope |
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| CN204807618U true CN204807618U (en) | 2015-11-25 |
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| CN201520279271.5U Expired - Fee Related CN204807618U (en) | 2015-04-30 | 2015-04-30 | Electroscope |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977456A (en) * | 2015-07-02 | 2015-10-14 | 中国石油天然气股份有限公司 | Test pencil |
| CN106199146A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Electroscope |
| CN109959834A (en) * | 2017-12-14 | 2019-07-02 | 中国石油天然气股份有限公司 | Earth detector |
-
2015
- 2015-04-30 CN CN201520279271.5U patent/CN204807618U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199146A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Electroscope |
| CN106199146B (en) * | 2015-04-30 | 2023-10-31 | 中国石油天然气股份有限公司 | electroscope |
| CN104977456A (en) * | 2015-07-02 | 2015-10-14 | 中国石油天然气股份有限公司 | Test pencil |
| CN109959834A (en) * | 2017-12-14 | 2019-07-02 | 中国石油天然气股份有限公司 | Earth detector |
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| C14 | Grant of patent or utility model | ||
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