CN204287367U - The multi-functional testing device of low-voltage AC/DC - Google Patents
The multi-functional testing device of low-voltage AC/DC Download PDFInfo
- Publication number
- CN204287367U CN204287367U CN201420752021.4U CN201420752021U CN204287367U CN 204287367 U CN204287367 U CN 204287367U CN 201420752021 U CN201420752021 U CN 201420752021U CN 204287367 U CN204287367 U CN 204287367U
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- diode
- indicating circuit
- parallel
- circuit
- sound equipment
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Abstract
The utility model relates to the multi-functional testing device of a kind of low-voltage AC/DC, and its structure is connected in parallel light emitting diode after being connected with the 3rd Diode series by the first diode, the second diode, then is connected in parallel hummer, forms sound equipment indicating circuit; Be connected in series by the 4th diode and incandescent lamp, form and exchange indicating circuit; Connected by resistor, lamp pearl and light switch, form lighting sub loop, be connected in the two ends of power supply in parallel, form parallel branch; One end of described parallel branch connects with one end of described sound equipment indicating circuit, another termination second test pencil of described parallel branch; The other end of described sound equipment indicating circuit connects with described one end exchanging indicating circuit, another termination first test pencil of described interchange indicating circuit.The utility model to as the fault of ac and dc circuit, communication line, cable fault, electrical equipment malfunction, diode and triode, all can do qualitative detection, also can measure the fault of ac and dc circuit, communication line cable fault and electrical equipment.
Description
Technical field
The utility model relates to a kind of circuit checker, specifically the multi-functional testing device of a kind of low-voltage AC/DC.
Background technology
In the routine work of power supply department, the electric fault of process AC and DC power circuit, communication line, communication cable, electrical equipment and communication apparatus etc. is a conventional groundwork.Multimeter is normally used a kind of testing tool in this kind of work, when using multimeter to detect, according to electrical fault conditions, need according to different testing goals, gear in frequent shift surface, if and gear replacing is not right, such as do not change to interchange gear when measuring and exchanging, direct current gear is not changed to when measuring direct current, the words of resistance gear are not changed to when measuring resistance, just likely can cause the damage of multimeter, so just cannot detect in time and fix a breakdown, affect normal power supply, thus make user cannot normally production and operation, communications service can not keep unimpeded.
Utility model content
The purpose of this utility model is just to provide the multi-functional testing device of a kind of low-voltage AC/DC, there is complex operation and easily damage and affect the problem of normal service under improper operation to solve multimeter in electric fault maintenance process.
The utility model is achieved in that the multi-functional testing device of a kind of low-voltage AC/DC, is connected in parallel light emitting diode by the first diode, the second diode, then is connected in parallel hummer with the 3rd Diode series after being connected, and forms sound equipment indicating circuit; Be connected in series by the 4th diode and incandescent lamp, form and exchange indicating circuit; Be connected in series by resistor, lamp pearl and light switch, form lighting sub loop, be connected in the two ends of power supply in parallel, form parallel branch; One end of described parallel branch connects with one end of described sound equipment indicating circuit, another termination second test pencil of described parallel branch; The other end of described sound equipment indicating circuit connects with described one end exchanging indicating circuit, another termination first test pencil of described interchange indicating circuit.
The utility model can carry out following operation:
(1) break-make of alternating current circuit, DC line and communication line can be tested: when circuit is not charged, if light emitting diode is bright, represent logical, if light emitting diode does not work, be expressed as short.
(2) can low-voltage ac voltage be tested: when having an electricity incandescent lamp and light emitting diode simultaneously bright, tentatively can judge the height of alternating voltage according to the brightness of incandescent lamp.
(3) can judge exchange, DC voltage: if in circuit as DC voltage time, light emitting diode is bright, replacing two test test pencils detecting position postpone, light emitting diode does not then work; Otherwise be alternating current.
(4) quality of diode can be judged: light emitting diode is bright when unidirectional detection then represents that diode is normal, and during two-way detection, light emitting diode is all bright, represents that diode punctures.
(5) when the place of night or dark uses, the light switch turned on this testing device makes lamp pearl light and can throw light on, need not light fixture in addition, gets final product work.
Circuit structure of the present utility model is simple, measuring ability is various, use intuitive and convenient, to the fault of general ac and dc circuit, communication line, cable fault, electrical equipment malfunction, diode and triode, all can be used as qualitative detection, to judge being logical or disconnected, avoid because the situation of gear damage multimeter of misplaying occurs.The utility model also can measure the fault of ac and dc circuit, communication line cable fault and electrical equipment.When detecting the fault of diode and triode, no matter be at night or by day, temperature is cold or hot, charged still not charged, can use, also have the sound-light prompting function of detection failure.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, basic circuit of the present utility model be mutually be connected in series by the first diode D1, the second diode D2 and the 3rd diode D3 after, be first connected in parallel LED, then be connected in parallel hummer HA, form sound equipment indicating circuit; Be connected in series by the incandescent lamp HW of the 4th diode D4 and 220V, form and exchange indicating circuit; Be connected in series by the lamp pearl HD of resistor R, 1.5V and light switch K, form lighting sub loop.Lighting sub loop is connected in parallel the two ends of power supply E, forms a parallel branch; The right-hand member of this parallel branch connects with the left end of sound equipment indicating circuit, and the left end of this parallel branch is connected with the second test pencil B2; The right-hand member of sound equipment indicating circuit connects with the left end exchanging indicating circuit, and the right-hand member exchanging indicating circuit is connected with the first test pencil B1.Foregoing circuit is installed in a suitable housing, namely forms a multi-functional testing device of low-voltage AC/DC thus.
When for measuring uncharged ac and dc circuit, communication line, cable fault, electrical equipment malfunction, diode or triode fault, this testing device is by the powered battery of instrument internal; When alternating current circuit, communication line, cable, electrical equipment, diode and triode lead to, LED is bright, represents logical, otherwise is disconnected.
When the alternating current circuit for measuring charged (external voltage is higher than instrument internal voltage), cable, electrical equipment, this testing device is by the Power supply of instrument outside; When alternating current circuit, communication line, cable, electrical equipment lead to, incandescent lamp HW and the bright LED of light emitting diode is simultaneously bright, then represent logical, otherwise be disconnected.
When measuring the alternating current circuit of charged (external voltage is lower than instrument internal voltage), cable, electrical equipment, this testing device is by the Power supply of instrument internal; When alternating current circuit, communication line, cable, electrical equipment lead to, LED is bright, represents logical, otherwise is disconnected.
When measuring DC line, cable, electrical equipment, the diode or triode of charged (external voltage is higher than instrument internal voltage), this testing device is by instrument external power source; When DC line, cable, electrical equipment, diode or triode lead to, LED is bright, represents logical, otherwise is disconnected.
When measuring DC line, cable, electrical equipment, the diode or triode of charged (external voltage is lower than instrument internal voltage), this testing device is by instrument internal Power supply; When DC line, cable, electrical equipment, diode or triode lead to, LED is bright, represents logical, otherwise is disconnected.
Claims (1)
1. the multi-functional testing device of low-voltage AC/DC, is characterized in that, is connected in parallel light emitting diode by the first diode, the second diode, then is connected in parallel hummer with the 3rd Diode series after being connected, and forms sound equipment indicating circuit; Be connected in series by the 4th diode and incandescent lamp, form and exchange indicating circuit; Be connected in series by resistor, lamp pearl and light switch, form lighting sub loop, be connected in the two ends of power supply in parallel, form parallel branch; One end of described parallel branch connects with one end of described sound equipment indicating circuit, another termination second test pencil of described parallel branch; The other end of described sound equipment indicating circuit connects with described one end exchanging indicating circuit, another termination first test pencil of described interchange indicating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752021.4U CN204287367U (en) | 2014-12-05 | 2014-12-05 | The multi-functional testing device of low-voltage AC/DC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752021.4U CN204287367U (en) | 2014-12-05 | 2014-12-05 | The multi-functional testing device of low-voltage AC/DC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204287367U true CN204287367U (en) | 2015-04-22 |
Family
ID=52870516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420752021.4U Expired - Fee Related CN204287367U (en) | 2014-12-05 | 2014-12-05 | The multi-functional testing device of low-voltage AC/DC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204287367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113917371A (en) * | 2021-10-09 | 2022-01-11 | 国网山东省电力公司临沂供电公司 | Measuring box wiring detection tool |
-
2014
- 2014-12-05 CN CN201420752021.4U patent/CN204287367U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113917371A (en) * | 2021-10-09 | 2022-01-11 | 国网山东省电力公司临沂供电公司 | Measuring box wiring detection tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151205 |
|
| EXPY | Termination of patent right or utility model |