CN2065761U - Liquid crystal ad/dc induction electricity testing device - Google Patents
Liquid crystal ad/dc induction electricity testing device Download PDFInfo
- Publication number
- CN2065761U CN2065761U CN 89220003 CN89220003U CN2065761U CN 2065761 U CN2065761 U CN 2065761U CN 89220003 CN89220003 CN 89220003 CN 89220003 U CN89220003 U CN 89220003U CN 2065761 U CN2065761 U CN 2065761U
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- CN
- China
- Prior art keywords
- liquid crystal
- testing device
- neon tube
- utility
- model
- 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.)
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to a liquid crystal AD/CD induction electricity testing device which is composed of a contact, a protective resistor, a neon tube, a liquid-crystal display panel hand pressing metal part, etc. The utility model can conduct electricity test to both AC and DC currents, and by utilizing the performance of non-contact type, the testing device can accurately find the wire breaking point of the wire. The utility model is convenient, ingenious and practical.
Description
The utility model is the simple test instrument that a kind of electrical verification is used.
Existing electrical verification instrument has electroscope, multimeter and various electrical measurement instrument.Electroscope is tested conductor with the contact contact, and electricity is arranged, and neon tube is shinny in the electroscope, proves that conductor has at this moment; Neon tube does not work, and proves that conductor is not charged this moment, uses this electroscope, if light is stronger, neon tube shows unclear, and it is disconnected that erroneous judgement easily takes place.In addition, if go to survey low-voltage with this electroscope, little electric current, little power consumption situation, neon tube then can not be worked, thereby can't judge whether conductor is charged.And general-purpose pen and other electrical measurement instrument, though electrical verification is accurate, measurable range is also wide, their volumes are big, use dumb.Simultaneously,, all must remove really to touch measured conductor, can measure just whether it charged with their contact, test pencil head and output probe no matter be electroscope, multimeter or electrical measurement instrument.These are all given and judge whether conductor has electricity to make troubles.
The purpose of this utility model is to provide a kind of liquid crystal alternating current-direct current induction electricity measurer of non-contact type.It utilizes the liquid crystal display device internal resistance height of micropower, applies the voltage of electric field wide ranges, has Weak current just can drive the characteristics of demonstration, as long as the close charged object of contact, with induction current, make display work, can judge whether.Also can be applicable to two kinds of situations of AC and DC simultaneously to the conductor electrical verification of low-voltage, little electric current, micropower.
The utility model is achieved in that in electricity measurer, the liquid crystal display circuit of packing into.Because liquid crystal display device is the device of little power consumption, small drive current just can make it to show.As the LCD in the common electrical sublist, only needing in operating voltage is 1-3V, and working current can show work less than 1 μ A, therefore produces induced voltage, the then liquid crystal display in the electroscope after contact contacts.For easy to use, can in electricity measurer, refill the former neon tube electroscope of a cover, under the darker situation of light, neon tube is luminous obviously, act as good for surveying the High Level AC Voltage neon tube.
This kind electroscope has the noncontact electroscope function again except that the function with common neon tube electroscope.That is: as long as the close electrified body of contact, just can whether there be demonstration to judge whether from LCD panel; Have the burn out check function in addition: contact moves along wire sheath, and break point can be accurately found in having or not of liquid crystal display; Have highly sensitive, AC and DC, but the equal function of electrical verification of low-voltage can be advantageously used in the maintenance of automobile, motorcycle and low-voltage electrical apparatus circuit; In addition, this kind electroscope, owing to need not add working power, volume is little, and is easy to use; The electrical verification wide ranges, interchange can be surveyed between 6-500V, and direct current can be surveyed between 6-250V.Because this electrical verification instrument generally all is to be interrupted to use, in this electrical verification scope, calculated by five seconds each service time, can use more than 50,000 times.This electroscope can be designed to different shape (cartridge type, pen type, peashooter formula all can) as required.
Accompanying drawing is specifically described:
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is a structural representation of the present utility model.
Among Fig. 1, (1) is contact, and protective resistance (2), neon tube (4) are connected in parallel in the circuit with protective resistance (3), LCD panel (5), and (6) press the metal part for hand.Wherein protective resistance (2), (3) are 1-2M Ω.
(7) are contact among Fig. 2, and (8) are neon tube, and (9) are LCD panel, and (10) press the metal part for hand.
This electroscope, only with hand is pinned galvanoscopic hand by metal part (6), (10) during use, with contact (1), (7) touch or near measured conductor or wire sheath on, when voltage is that 60V is when above, neon tube and liquid crystal show that simultaneously when light was dark, neon tube showed obviously; When light was strong, liquid crystal display was obvious.It is following or during for low pressure, direct current, neon tube does not show, liquid crystal display that voltage is lower than 60V.When the lead no current or when being zero line, neon tube and liquid crystal do not show.As the electrical verification instrument, it is better than the neon tube electroscope, and is more convenient, dexterous than multimeter and current measuring instrument again.
Claims (2)
1, a kind of alternating current-direct current induction electricity measurer is characterized in that: the LCD panel (6) that need not working current is housed in electricity measurer.
2, according to the described alternating current-direct current induction of claim 1 electricity measurer, it is characterized in that: protective resistance (2), (3), neon tube (4) also can be housed in electricity measurer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89220003 CN2065761U (en) | 1989-11-24 | 1989-11-24 | Liquid crystal ad/dc induction electricity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89220003 CN2065761U (en) | 1989-11-24 | 1989-11-24 | Liquid crystal ad/dc induction electricity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2065761U true CN2065761U (en) | 1990-11-14 |
Family
ID=4874763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89220003 Withdrawn CN2065761U (en) | 1989-11-24 | 1989-11-24 | Liquid crystal ad/dc induction electricity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2065761U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137157A (en) * | 2015-09-09 | 2015-12-09 | 国家电网公司 | Alternating- and direct-current high-voltage electricity testing device |
| GB2529306A (en) * | 2014-07-08 | 2016-02-17 | Peter Bradley | Electricity detection device |
| CN105866516A (en) * | 2016-03-29 | 2016-08-17 | 国网山东省电力公司平阴县供电公司 | Lower voltage test light having digital function and neon tube function |
| CN110058072A (en) * | 2018-01-18 | 2019-07-26 | 元壤实业（上海）有限公司 | A kind of electroscope with contact detection |
-
1989
- 1989-11-24 CN CN 89220003 patent/CN2065761U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2529306A (en) * | 2014-07-08 | 2016-02-17 | Peter Bradley | Electricity detection device |
| GB2529306B (en) * | 2014-07-08 | 2018-03-07 | Bradley Peter | Electricity detection device |
| CN105137157A (en) * | 2015-09-09 | 2015-12-09 | 国家电网公司 | Alternating- and direct-current high-voltage electricity testing device |
| CN105866516A (en) * | 2016-03-29 | 2016-08-17 | 国网山东省电力公司平阴县供电公司 | Lower voltage test light having digital function and neon tube function |
| CN105866516B (en) * | 2016-03-29 | 2018-08-07 | 国网山东省电力公司平阴县供电公司 | Have both digital and neon tube formula function low pressure electroscope |
| CN110058072A (en) * | 2018-01-18 | 2019-07-26 | 元壤实业（上海）有限公司 | A kind of electroscope with contact detection |
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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 |