CN104977456A - Test pencil - Google Patents
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- CN104977456A CN104977456A CN201510382368.3A CN201510382368A CN104977456A CN 104977456 A CN104977456 A CN 104977456A CN 201510382368 A CN201510382368 A CN 201510382368A CN 104977456 A CN104977456 A CN 104977456A
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Abstract
Disclosed in the invention is a test pencil comprising an insulating housing, a hand-touch electrode, an electroscope circuit, an acousto-optic circuit, a function conversion switch, a measurement line, a constant-current source circuit, a battery, and a test contact. According to the test pencil provided by the embodiment of the invention, because of integration of the electroscope circuit, the constant-current source circuit, and the acousto-optic circuit, whether an object is electrified can be tested and a constant-current power supply also can be provided for a tested circuit. Meanwhile, a test result can be prompted in an acousto-optic mode. Therefore, the user can use the test pencil conveniently; a defect that the user can not provide a constant-current power supply for a tested circuit until the test pencil is replaced with other equipment can be overcome; and thus the time of replacement of the test pencil with other equipment can be saved.
Description
Technical field
The present invention relates to field of electrical equipment, particularly relate to a kind of test pencil.
Background technology
Test pencil is electrical repair indispensability and one of the most frequently used instrument, test pencil function conventional is at present single, can only testing power supply or electric appliance casing whether charged, and the mode of neon bulb lamp or liquid crystal display display affects greatly by light intensity, difficulty is observed when extraneous light is strong, show not obvious, cause user not observe, then affect user and judge.
Therefore, there is test pencil in prior art affects greatly by extraneous light power in use, affects the technical matters that user judges.
Summary of the invention
The embodiment of the present invention, by providing a kind of test pencil, affects greatly by extraneous light power in use in order to solve the test pencil existed in prior art, affects the technical matters that user judges.
Embodiments provide a kind of test pencil, comprising:
Insulation crust, has first end and the second end;
Hand touched electrode, is arranged at described first end;
Electrical circuit inspection, is connected with described hand touched electrode, is arranged in described insulation crust;
Acousto-optic circuit, is connected with described electrical circuit inspection, is arranged in described insulation crust, and described acousto-optic circuit comprises sound-producing device and the first light-emitting device;
Function switch, is connected with described acousto-optic circuit, and described function switch at least has the first connection status;
Slotted line;
Constant-current source circuit, is connected with described slotted line with described function switch, and when described function switch is in the first connection status, described constant-current source circuit is connected with described acousto-optic circuit; Described constant-current source circuit comprises: the first diode, there is first end and the second end, when described function switch is in the first connection status, described first end is connected with described function switch, wherein, described first end is the positive pole of described first diode, and described second end is the negative pole of described first diode; Second diode, has the 3rd end and the 4th end, and described 3rd end is connected with described second end, and wherein, described 3rd end is the positive pole of described second diode, and described 4th end is the negative pole of described second diode; First resistance, have five terminal and the 6th end, described five terminal is connected with described function switch; One pnp type triode, a pnp type triode has the first emitter, the first base stage and the first collector, and described first emitter is connected to described 6th end, and described first base stage is connected to described 4th end; Second resistance, has the 7th end and the 8th end, and described 7th end is connected with described 4th end; First light emitting diode, the positive pole of described first light emitting diode is connected with described 8th end with described first collector, and the negative pole of described first light emitting diode is connected with described slotted line;
Battery, is connected with described acousto-optic circuit, is arranged in described insulation crust;
Test contact, is arranged at described the second end, is connected with described electrical circuit inspection.
Alternatively, described electrical circuit inspection comprises:
First protective resistance, has the 9th end and the tenth end, and described 9th end is connected to described hand touched electrode;
Second protective resistance, has the tenth one end and the 12 end, and described tenth one end is connected to described tenth end;
First electric capacity, has the 13 end and the 14 end, and described tenth three-terminal link is in described 12 end, and described 14 end is connected to described test contact;
3rd protective resistance, has the tenth five terminal and the 16 end, and described tenth five terminal is connected to described 12 end, and described tenth six end connecting is in described test contact;
One npn type triode, has the second emitter, the second base stage and the second collector, and described second base stage is connected to described 12 end, and described second collector is connected to described battery;
2nd npn type triode, has the 3rd emitter, the 3rd base stage and the 3rd collector, and described 3rd base stage is connected to described second emitter, and described 3rd emitter is connected to described test contact.
Alternatively, described acousto-optic circuit comprises:
First current-limiting resistance, has the 17 end and the 18 end, and described 17 end is connected with described battery with described first collector;
First light-emitting device, has the 19 end and the 20 end, and described 19 end is connected to described 18 end;
Sound-producing device, has the 20 one end and the 22 end, and described 20 one end is connected to described 20 end, and described 22 end is connected to described second collector;
Second electric capacity, has the 23 end and the 24 end, and described 20 three-terminal link is in described 20 end, and described 24 end is connected to described second collector.
Alternatively, described first light-emitting device is specially the second light emitting diode, and described sound-producing device is specially a hummer.
Alternatively, described test pencil also comprises path metering circuit, and described function switch also has the second connection status, and when described function switch is in described second connection status, described constant-current source circuit and described function switch are in off-state;
Described path metering circuit comprises: the 3rd diode, there is the 20 five terminal and the 26 end, described 20 five terminal is connected with described 3rd collector, described 26 end is connected with described slotted line, wherein, described 20 five terminal is the positive pole of described 3rd diode, and described 26 end is the negative pole of described 3rd diode.
Alternatively, described test pencil also comprises lighting circuit, and described function switch also has the 3rd connection status, and when described function switch is in described 3rd connection status, described function switch is connected with described lighting circuit;
Described lighting circuit comprises: the 3rd light emitting diode, and when described function switch is in described 3rd connection status, the positive pole of described 3rd light emitting diode is connected to described function switch; 4th light emitting diode, the positive pole of described 4th light emitting diode is connected to the negative pole of described 3rd light emitting diode; 5th light emitting diode, the positive pole of described 5th light emitting diode is connected to the negative pole of described 4th light emitting diode; Second current-limiting resistance, described second current-limiting resistance has the 27 end and the 28 end, and described 27 end is connected to the negative pole of described 5th light emitting diode, and described 28 end is connected to described test contact.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
1, the test pencil that provides of the embodiment of the present invention is owing to gathering together electrical circuit inspection, constant-current source circuit and acousto-optic circuit, not only can carry out testing whether object is charged, constant-current supply can also be provided for circuit-under-test, acousto-optic hint test result can also be passed through simultaneously, facilitate user greatly to use, avoid user to need test pencil to be replaced by other equipment and can provide the defect of constant-current supply for circuit-under-test, save the time that test pencil is replaced by other equipment by user.
2, the test pencil that the embodiment of the present invention provides also has gathered path metering circuit and lighting circuit, thus make test pencil have path measurement function and illumination functions, make test pencil can be applicable to more test scene, be user-friendly for use greatly, save the time that test pencil is replaced by other equipment by user.
Accompanying drawing explanation
The schematic diagram of the test pencil that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the circuit module of the test pencil that Fig. 2 provides for the embodiment of the present invention;
The circuit diagram of the test pencil that Fig. 3 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention, by providing a kind of test pencil, affects greatly by extraneous light power in use in order to solve the test pencil existed in prior art, affects the technical matters that user judges.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of the test pencil that the embodiment of the present invention provides, and as shown in Figure 1, test pencil comprises:
Insulation crust 101, has first end and the second end, and in the present embodiment, first end and the second end are two ends relative on insulation crust 101, do not limit in other embodiments;
Hand touched electrode 102, is arranged at first end;
Circuit board 11, is connected with hand touched electrode 102, and it is inner that circuit board 11 is arranged on insulation crust 101, not shown in Fig. 1;
Function switch 103, is connected with circuit board 11;
Slotted line 104, is connected with circuit board 11;
Test contact 105, is arranged at the second end, is connected with circuit board 11.
Please refer to Fig. 2, Fig. 2 is the schematic diagram of the galvanoscopic circuit module that the embodiment of the present invention provides, as shown in Figure 2, the circuit board 11 that the embodiment of the present invention provides can comprise electrical circuit inspection 111, acousto-optic circuit 112, constant-current source circuit 113, path metering circuit 114, lighting circuit 115 and battery 116, circuit board 11 specifically can be made up of 1 piece or polylith circuit board, and is arranged in insulation shell 101.
Please refer to Fig. 3, Fig. 3 is the circuit diagram of the test pencil that the embodiment of the present invention provides, as shown in Figure 3, function switch 103 has the first connection status, the second connection status and the 3rd connection status, in actual applications, controlling functions switch 103 can be carried out by the diverse location residing for the cutter head of a switch or a button and be in different connection status, not limit at this.
Please continue to refer to Fig. 3, constant-current source circuit 113 is connected with slotted line 104 with function switch 103, when function switch 103 is in the first connection status, when also namely function switch 103 is connected with position A, constant-current source circuit 113 is connected with acousto-optic circuit 112; Constant-current source circuit 113 comprises: the first diode 1131, there is first end and the second end, when function switch 103 is in the first connection status, first end is connected with function switch 103, wherein, first end is the positive pole of the first diode 1131, and the second end is the negative pole of the first diode 1131; Second diode 1132, have the 3rd end and the 4th end, the 3rd end is connected with the second end, and wherein, the 3rd end is the positive pole of the second diode 1132, and the 4th end is the negative pole of the second diode 1132; First resistance 1133, have five terminal and the 6th end, five terminal is connected with function switch 103; One pnp type triode the 1134, one pnp type triode 1134 has the first emitter, the first base stage and the first collector, and the first emitter is connected to the 6th end, and the first base stage is connected to the 4th end; Second resistance 1135, have the 7th end and the 8th end, the 7th end is connected with the 4th end; The positive pole of the first light emitting diode 1136, first light emitting diode 1136 is connected with the 8th end with the first collector, and the negative pole of the first light emitting diode 1136 is connected with slotted line 104.
In the present embodiment, please continue to refer to Fig. 3, electrical circuit inspection 111 comprises:
First protective resistance 1111, have the 9th end and the tenth end, the 9th end is connected to hand touched electrode 102;
Second protective resistance 1112, has the tenth one end and the 12 end, and the tenth one end is connected to the tenth end;
First electric capacity 1113, has the 13 end and the 14 end, and the tenth three-terminal link is in the 12 end, and the 14 end is connected to test contact 105;
3rd protective resistance 1114, has the tenth five terminal and the 16 end, and the tenth five terminal is connected to the 12 end, and the tenth six end connecting is in test contact 105;
One npn type triode 1115, have the second emitter, the second base stage and the second collector, the second base stage is connected to the 12 end, and the second collector is connected to battery;
2nd npn type triode 1116, have the 3rd emitter, the 3rd base stage and the 3rd collector, the 3rd base stage is connected to the second emitter, and the 3rd emitter is connected to test contact 105.
In the present embodiment, please continue to refer to Fig. 3, acousto-optic circuit 112 comprises:
First current-limiting resistance 1121, has the 17 end and the 18 end, and the 17 end is connected with battery with the first collector;
First light-emitting device 1122, has the 19 end and the 20 end, and the 19 end is connected to the 18 end;
Sound-producing device 1123, has the 20 one end and the 22 end, and the 20 one end is connected to the 20 end, and the 22 end is connected to the second collector;
Second electric capacity 1124, has the 23 end and the 24 end, and the 20 three-terminal link is in the 20 end, and the 24 end is connected to the second collector.
In the present embodiment, please continue to refer to Fig. 3, the first light-emitting device 1122 is specially the second light emitting diode, and sound-producing device is specially a hummer.
In actual applications, function conversion circuit can be placed in the first connection status, test contact 105 by hand contact hand touched electrode 102, then contacts with object under test by user, and whether the test pencil that namely embodiment of the present invention provides can detect object under test charged; Also slotted line 104 can be connected with one end of circuit under test, again test contact 105 is connected with the other end of circuit under test, then the test pencil that provides of the embodiment of the present invention can provide the power supply of steady current for circuit under test, avoid user to need test pencil to be replaced by other equipment and can provide the defect of constant-current supply for circuit-under-test, save the time that test pencil is replaced by other equipment by user.
Meanwhile, the test pencil that the embodiment of the present invention provides can also point out user in test pencil electrical verification or when providing constant-current supply by modes such as acousto-optics, to user clearly to point out by acousto-optic circuit 112.
Can find out, the test pencil that the embodiment of the present invention provides is owing to gathering together electrical circuit inspection, constant-current source circuit and acousto-optic circuit, not only can carry out testing whether object is charged, constant-current supply can also be provided for circuit-under-test, acousto-optic hint test result can also be passed through simultaneously, facilitate user greatly to use, avoid user to need test pencil to be replaced by other equipment and can provide the defect of constant-current supply for circuit-under-test, save the time that test pencil is replaced by other equipment by user.
In the present embodiment, please continue to refer to Fig. 3, test pencil also comprises path metering circuit 114, and function switch 103 also has the second connection status, when function switch 103 is in the second connection status, constant-current source circuit 113 and function switch 103 are in off-state;
Path metering circuit 114 comprises: the 3rd diode 1141, there is the 20 five terminal and the 26 end, 20 five terminal is connected with the 3rd collector, 26 end is connected with slotted line 104, wherein, 20 five terminal is the positive pole of the 3rd diode 1141, and the 26 end is the negative pole of the 3rd diode 1141.
In the present embodiment, please continue to refer to Fig. 3, test pencil also comprises lighting circuit 115, and function switch 103 also has the 3rd connection status, and when function switch 103 is in the 3rd connection status, function switch 103 is connected with lighting circuit 115;
Lighting circuit 115 comprises: the 3rd light emitting diode 1151, and when function switch 103 is in the 3rd connection status, such as, when function switch 103 is connected with position B, the positive pole of the 3rd light emitting diode 1151 is connected to function switch 103; The positive pole of the 4th light emitting diode the 1152, four light emitting diode 1152 is connected to the negative pole of the 3rd light emitting diode 1151; The positive pole of the 5th light emitting diode the 1153, five light emitting diode 1153 is connected to the negative pole of the 4th light emitting diode 1152; Second current-limiting resistance 1154, second current-limiting resistance has the 27 end and the 28 end, and the 27 end is connected to the negative pole of the 5th light emitting diode 1153, and the 28 end is connected to test contact 105.Certainly, in actual applications, lighting circuit 115 can also comprise more light emitting diode, does not limit at this.
Can find out, the test pencil that the embodiment of the present invention provides also has gathered path metering circuit and lighting circuit, thus make test pencil have path measurement function and illumination functions, make test pencil can be applicable to more test scene, be user-friendly for use greatly, save the time that test pencil is replaced by other equipment by user.
Technical scheme in the embodiment of the present invention, at least has following technique effect or advantage:
1, the test pencil that provides of the embodiment of the present invention is owing to gathering together electrical circuit inspection, constant-current source circuit and acousto-optic circuit, not only can carry out testing whether object is charged, constant-current supply can also be provided for circuit-under-test, acousto-optic hint test result can also be passed through simultaneously, facilitate user greatly to use, avoid user to need test pencil to be replaced by other equipment and can provide the defect of constant-current supply for circuit-under-test, save the time that test pencil is replaced by other equipment by user.
2, the test pencil that the embodiment of the present invention provides also has gathered path metering circuit and lighting circuit, thus make test pencil have path measurement function and illumination functions, make test pencil can be applicable to more test scene, be user-friendly for use greatly, save the time that test pencil is replaced by other equipment by user.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. a test pencil, is characterized in that, comprising:
Insulation crust, has first end and the second end;
Hand touched electrode, is arranged at described first end;
Electrical circuit inspection, is connected with described hand touched electrode, is arranged in described insulation crust;
Acousto-optic circuit, is connected with described electrical circuit inspection, is arranged in described insulation crust, and described acousto-optic circuit comprises sound-producing device and the first light-emitting device;
Function switch, is connected with described acousto-optic circuit, and described function switch at least has the first connection status;
Slotted line;
Constant-current source circuit, is connected with described slotted line with described function switch, and when described function switch is in the first connection status, described constant-current source circuit is connected with described acousto-optic circuit; Described constant-current source circuit comprises: the first diode, there is first end and the second end, when described function switch is in the first connection status, described first end is connected with described function switch, wherein, described first end is the positive pole of described first diode, and described second end is the negative pole of described first diode; Second diode, has the 3rd end and the 4th end, and described 3rd end is connected with described second end, and wherein, described 3rd end is the positive pole of described second diode, and described 4th end is the negative pole of described second diode; First resistance, have five terminal and the 6th end, described five terminal is connected with described function switch; One pnp type triode, a pnp type triode has the first emitter, the first base stage and the first collector, and described first emitter is connected to described 6th end, and described first base stage is connected to described 4th end; Second resistance, has the 7th end and the 8th end, and described 7th end is connected with described 4th end; First light emitting diode, the positive pole of described first light emitting diode is connected with described 8th end with described first collector, and the negative pole of described first light emitting diode is connected with described slotted line;
Battery, is connected with described acousto-optic circuit, is arranged in described insulation crust;
Test contact, is arranged at described the second end, is connected with described electrical circuit inspection.
2. test pencil as claimed in claim 1, it is characterized in that, described electrical circuit inspection comprises:
First protective resistance, has the 9th end and the tenth end, and described 9th end is connected to described hand touched electrode;
Second protective resistance, has the tenth one end and the 12 end, and described tenth one end is connected to described tenth end;
First electric capacity, has the 13 end and the 14 end, and described tenth three-terminal link is in described 12 end, and described 14 end is connected to described test contact;
3rd protective resistance, has the tenth five terminal and the 16 end, and described tenth five terminal is connected to described 12 end, and described tenth six end connecting is in described test contact;
One npn type triode, has the second emitter, the second base stage and the second collector, and described second base stage is connected to described 12 end, and described second collector is connected to described battery;
2nd npn type triode, has the 3rd emitter, the 3rd base stage and the 3rd collector, and described 3rd base stage is connected to described second emitter, and described 3rd emitter is connected to described test contact.
3. test pencil as claimed in claim 2, it is characterized in that, described acousto-optic circuit comprises:
First current-limiting resistance, has the 17 end and the 18 end, and described 17 end is connected with described battery with described first collector;
First light-emitting device, has the 19 end and the 20 end, and described 19 end is connected to described 18 end;
Sound-producing device, has the 20 one end and the 22 end, and described 20 one end is connected to described 20 end, and described 22 end is connected to described second collector;
Second electric capacity, has the 23 end and the 24 end, and described 20 three-terminal link is in described 20 end, and described 24 end is connected to described second collector.
4. test pencil as claimed in claim 3, it is characterized in that, described first light-emitting device is specially the second light emitting diode, and described sound-producing device is specially a hummer.
5. test pencil as claimed in claim 2, it is characterized in that, described test pencil also comprises path metering circuit, described function switch also has the second connection status, when described function switch is in described second connection status, described constant-current source circuit and described function switch are in off-state;
Described path metering circuit comprises: the 3rd diode, there is the 20 five terminal and the 26 end, described 20 five terminal is connected with described 3rd collector, described 26 end is connected with described slotted line, wherein, described 20 five terminal is the positive pole of described 3rd diode, and described 26 end is the negative pole of described 3rd diode.
6. test pencil as claimed in claim 5, it is characterized in that, described test pencil also comprises lighting circuit, and described function switch also has the 3rd connection status, when described function switch is in described 3rd connection status, described function switch is connected with described lighting circuit;
Described lighting circuit comprises: the 3rd light emitting diode, and when described function switch is in described 3rd connection status, the positive pole of described 3rd light emitting diode is connected to described function switch; 4th light emitting diode, the positive pole of described 4th light emitting diode is connected to the negative pole of described 3rd light emitting diode; 5th light emitting diode, the positive pole of described 5th light emitting diode is connected to the negative pole of described 4th light emitting diode; Second current-limiting resistance, described second current-limiting resistance has the 27 end and the 28 end, and described 27 end is connected to the negative pole of described 5th light emitting diode, and described 28 end is connected to described test contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382368.3A CN104977456A (en) | 2015-07-02 | 2015-07-02 | Test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382368.3A CN104977456A (en) | 2015-07-02 | 2015-07-02 | Test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104977456A true CN104977456A (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510382368.3A Pending CN104977456A (en) | 2015-07-02 | 2015-07-02 | Test pencil |
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| Country | Link |
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| CN (1) | CN104977456A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05264611A (en) * | 1992-03-19 | 1993-10-12 | Fujitsu Ltd | Method and detecting circuit for disconnection of electric power source |
| CN2461001Y (en) * | 2001-01-02 | 2001-11-21 | 周少平 | Electronic test pencil |
| CN201196661Y (en) * | 2008-05-15 | 2009-02-18 | 刘建文 | Multifunctional AC electroprobe |
| CN201811990U (en) * | 2010-08-26 | 2011-04-27 | 余顺欢 | Multi-purpose electric measuring instrument |
| CN204807618U (en) * | 2015-04-30 | 2015-11-25 | 中国石油天然气股份有限公司 | Electroscope |
| CN106199146A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Electroscope |
-
2015
- 2015-07-02 CN CN201510382368.3A patent/CN104977456A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05264611A (en) * | 1992-03-19 | 1993-10-12 | Fujitsu Ltd | Method and detecting circuit for disconnection of electric power source |
| CN2461001Y (en) * | 2001-01-02 | 2001-11-21 | 周少平 | Electronic test pencil |
| CN201196661Y (en) * | 2008-05-15 | 2009-02-18 | 刘建文 | Multifunctional AC electroprobe |
| CN201811990U (en) * | 2010-08-26 | 2011-04-27 | 余顺欢 | Multi-purpose electric measuring instrument |
| CN204807618U (en) * | 2015-04-30 | 2015-11-25 | 中国石油天然气股份有限公司 | Electroscope |
| CN106199146A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Electroscope |
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Application publication date: 20151014 |
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