CN2101247U - Ac-dc test pencil - Google Patents
Ac-dc test pencil Download PDFInfo
- Publication number
- CN2101247U CN2101247U CN 91202392 CN91202392U CN2101247U CN 2101247 U CN2101247 U CN 2101247U CN 91202392 CN91202392 CN 91202392 CN 91202392 U CN91202392 U CN 91202392U CN 2101247 U CN2101247 U CN 2101247U
- Authority
- CN
- China
- Prior art keywords
- light emitting
- sleeve
- direct current
- switch
- measuring staff
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to an AC-DC test pencil which is an apparatus for indicating the existing of AC voltage and DC voltage. Resistors connected in series and two light emitting diodes connected in parallel oppositely are connected between a testing bar with an AC test pencil and a contact pole in parallel. A switch is connected among the ends of the light emitting diodes, a neon bulb spring and the contact pole. When direct current is tested, the switch is switched and communicated with the light emitting diodes connected in parallel, so the contact pole is connected with a circuit, the front end of the testing bar is contacted with a point to be tested, and thus, whether voltage exists can be judged and a positive and a negative poles can be confirmed according to the luminous situation of the light emitting diodes.
Description
The alternating current-direct current test pencil is the device that indication direct current and alternating voltage exist, is mainly used in measurement and whether exists voltage, and be direct current or alternating current, determine galvanic both positive and negative polarity.
Existing existing test pencil all is a lip pencil, is connected with measuring staff (gauge head) respectively at the sleeve two ends of pen, touches the utmost point, at measuring staff and touch in the sleeve between the utmost point and be in series with resistance, neon bulb and spring.During measurement, human body touches the utmost point, and the measuring staff front end touches tested place, and whether the situation luminous according to neon bulb is judged charged.But this test pencil can only be measured the indication alternating current, and the interchange low voltage can not indicate.Measure the indication direct current and then use some other instrument and meter, as multimeter etc.
The purpose of this utility model is to provide a kind of and can indicates the alternating voltage existence can indicate DC voltage to have and can distinguish survey electric installation--the alternating current-direct current test pencil of direct current both positive and negative polarity again.
Alternating current-direct current test pencil of the present utility model still has sleeve and the measuring staff that is connected with the sleeve two ends respectively, touches the utmost point, the spring of resistance, neon tube and the neon tube of connecting with measuring staff is arranged in the sleeve, and its design feature is: also have resistance, two mutually antiparallel light emitting diodes of direction with the measuring staff series connection in the sleeve; The spring of light emitting diode, neon tube and touch and be connected with switch between the utmost point.The light emitting diode series connection of resistance and two parallel connections is used to measure direct current, and is loaded in the sleeve, connects with measuring staff, with the spring and the dress of resistance in series, neon tube and the neon tube of measuring alternating current.Both do not hold and touch and are connected with switch between the utmost point, and the conversion of switch changes and touches being switched on or switched off of the utmost point, selects to measure alternating current or direct current.Switch is transformed into the spring link of neon tube, makes neon tube and touch the utmost point and be communicated with, be used to test alternating current.Switch is transformed into the light emitting diode link, makes light emitting diode and touch the utmost point and be communicated with, be used to test direct current.In test during direct current, is connected the preceding tested other end of end in contact of usefulness measuring staff with a tested end with touching the utmost point.As two lumination of light emitting diode, illustrate that there is voltage at tested two ends, and it is only luminous which to be merely hit according to two, distinguish the both positive and negative polarity at tested two ends.All luminous as two light emitting diodes, explanation is an alternating current.
For the ease of assembling, test galvanic resistance and two mutually antiparallel light emitting diode string of direction are contained in package, package is loaded in the sleeve, and the package two ends are connected with measuring staff, pressure spring respectively, and the pressure spring other end is connected with switch.Light emitting diode is not held by package end and pressure spring and is connected with switch.The inverse parallel of two light emitting diode direction phases, and connect with resistance, resistance terminal is connected with package one end, and the light-emitting diodes pipe end is connected with the package other end, and the residing package of light emitting diode place is the transparent body or windowing.In order to make switch often be in the neon tube spring link of test alternating current, switch is preferably microswitch.The spring link that can keep neon tube of microswitch often with touch the utmost point and be communicated with, prevent the unexpected High AC voltage light emitting diode of breaking.Has only the galvanic elements of test such as when touching microswitch, could being communicated with light emitting diode.For the ease of galvanic test, touch and extremely preferably be plugged with connection lead and web member, be connected with circuit-under-test easily with web member.
Compared with the prior art alternating current-direct current electrical measurement pen of the present utility model has following advantage:
1. promptly can test the indication alternating voltage and exist, also can test the indication DC voltage and exist, and to pick out be alternating current or direct current.If direct current also can pick out both positive and negative polarity.
2. each element organically is combined in the test pencil sleeve, and indicates with the different test of switch conversion, and structure is compact, is more convenient for carrying and using, and can be widely used in maintainability test electrical equipment, circuit.
Accompanying drawing has been represented a kind of exemplary construction synoptic diagram of the utility model alternating current-direct current test pencil.Further specify the utility model below in conjunction with accompanying drawing.This alternating current-direct current test pencil by sleeve 4, measuring staff 1, touch the utmost point 13, resistance, neon tube 5, spring, light emitting diode, switch 12 and form.Sleeve 4 two ends connect measuring staff 1 respectively, touch the utmost point 13.Sleeve is divided into two sections of phase card docking.The front end of the leading portion measuring staff of fixedly pegging graft.The measuring staff front end is the screw knife-edge, and the rear end is boss shape and is positioned at the sleeve leading portion.The utmost point is touched in the riveted joint of middle part, sleeve back segment rear end, touches the utmost point and has jack.Jack can be inserted with the plug 14 of Band clamp.The spring 9 of resistance 2, neon tube 5 and the neon tube of connecting with measuring staff is housed in the sleeve.Resistance 2 is connected with the contact of measuring staff boss.Spring 9 rear ends of neon tube are fixed on and connect platform 11.Also assembling resistance 3, two mutually antiparallel light emitting diodes 6,7 of direction in the sleeve.Resistance 3 is connected with light emitting diode 6,7 in parallel, and is connected in series with measuring staff 1.Resistance 3 is loaded in the package 16 with after the light emitting diode that two directions are in parallel is connected, and resistance terminal is connected with package one end, and the light-emitting diodes pipe end is connected with the package other end.Package 16 is packed in the sleeve, and an end of package 16 is connected with the contact of measuring staff boss, forms and the connecting of measuring staff, and is in parallel with formation between resistance 2, the neon tube 5.The other end of package is connected with spring 8 one end in contact, and spring 8 other ends are fixed in and are connecting platform 10.Package is connected with switch by spring 8 and connection platform.Switch is a microswitch, and microswitch is loaded in the sleeve back segment.Two links of microswitch respectively be connected platform 10,11 and connect, another link of microswitch with touch the utmost point 13 and be connected.Formed the test pencil of measuring alterating and direct current.Microswitch is in conducting and connects platform 11 states, guarantees to measure resistance 2, neon tube 5 and the spring conducting of alternating current, is in the state of measuring alternating current.When touching microswitch, make the switch transition conducting connect platform 10, and plug 14 is inserted the jack that touches the utmost point 13, clip at circuit, make resistance 3, light emitting diode 6,7, spring 8, touch the conducting of utmost point plug, be used to measure 3～40 volts direct current or at the alternating current below 36 volts.
Claims (4)
1, the alternating current-direct current test pencil has sleeve and the measuring staff 1 that is connected with the sleeve two ends respectively, touches 13, the spring 9 that resistance 2, neon tube 5 and the neon tube of connecting with measuring staff are arranged in the sleeve, it is characterized in that: also have and the resistance 3 of measuring staff series connection, two mutually antiparallel light emitting diodes of direction the spring 9 of light emitting diode 6,7, neon tube and touch and be connected with switch 12 between the utmost point 13 in the sleeve.
2, according to the said alternating current-direct current test pencil of claim 1, it is characterized in that resistance 3, two mutually antiparallel light emitting diode 6,7 strings of direction are contained in package 16, package 16 is loaded in the sleeve, package 16 two ends are connected with measuring staff 1, pressure spring 10 respectively, and pressure spring 10 is connected with switch 12.
3,, it is characterized in that switch is a microswitch according to claim 1 or 2 said alternating current-direct current test pencils.
4,, it is characterized in that touching the utmost point and be plugged with connection lead and web member 14 according to claim 1 or 2 said alternating current-direct current test pencils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91202392 CN2101247U (en) | 1991-02-08 | 1991-02-08 | Ac-dc test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91202392 CN2101247U (en) | 1991-02-08 | 1991-02-08 | Ac-dc test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2101247U true CN2101247U (en) | 1992-04-08 |
Family
ID=4912945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91202392 Withdrawn CN2101247U (en) | 1991-02-08 | 1991-02-08 | Ac-dc test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2101247U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841758A (en) * | 2016-12-20 | 2017-06-13 | 国家电网公司 | A kind of dual-purpose test pencil |
| CN106940396A (en) * | 2017-05-04 | 2017-07-11 | 贵州电网有限责任公司 | A kind of Fiber-Optic Voltage |
| CN106970254A (en) * | 2017-05-04 | 2017-07-21 | 贵州电网有限责任公司 | A kind of optical fiber current mutual inductor |
| CN108333417A (en) * | 2018-03-29 | 2018-07-27 | 国家电网公司 | 500kV high voltage ac/dc electroscopes |
-
1991
- 1991-02-08 CN CN 91202392 patent/CN2101247U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841758A (en) * | 2016-12-20 | 2017-06-13 | 国家电网公司 | A kind of dual-purpose test pencil |
| CN106940396A (en) * | 2017-05-04 | 2017-07-11 | 贵州电网有限责任公司 | A kind of Fiber-Optic Voltage |
| CN106970254A (en) * | 2017-05-04 | 2017-07-21 | 贵州电网有限责任公司 | A kind of optical fiber current mutual inductor |
| CN108333417A (en) * | 2018-03-29 | 2018-07-27 | 国家电网公司 | 500kV high voltage ac/dc electroscopes |
| CN108333417B (en) * | 2018-03-29 | 2019-12-27 | 国家电网公司 | 500kV high-voltage AC/DC electroscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |