CN2901327Y - Color changing flash test pen - Google Patents
Color changing flash test pen Download PDFInfo
- Publication number
- CN2901327Y CN2901327Y CN 200620028910 CN200620028910U CN2901327Y CN 2901327 Y CN2901327 Y CN 2901327Y CN 200620028910 CN200620028910 CN 200620028910 CN 200620028910 U CN200620028910 U CN 200620028910U CN 2901327 Y CN2901327 Y CN 2901327Y
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- Prior art keywords
- diode
- spring
- light
- voltage
- electrically connected
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- Expired - Fee Related
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Abstract
A color-changing flash neon is disclosed which comprises a testing contactor, a spring and a hand-touch electrode located in the insulating casing. The neon is characterized in that circuit plate is provided between the testing contactor and the spring, the testing contactor is electrically connected with current-limiting resistance, the other end and spring is parallel connected with two-wire testing circuit which comprises two reversal light-emitting diode with different color, each light-emitting diode is respectively cascaded with a diode reversal to the light-emitting diode, and each light-emitting diode is respectively parallel connected with condenser. The utility model makes use of color-changing flash of the two light-emitting diodes with different color to distinguish alternating voltage, direct current voltage and polarity of direct current voltage. The utility model is characterized in simple structure, easy operation, low cost, convenient use and reliable work which is applicable of distinction of 80-500 alternating voltage, direct current voltage and polarity of direct current voltage of secondary circuit of the power system and is worthy of widespread.
Description
Technical field
The utility model relates to the test pencil that is applied to secondary loop in power system 80-500 volt alternating voltage, DC voltage and the resolution of DC voltage polarity, is the alternating flashing light test pencil specifically.
Background technology
At present, have only a small amount of test pencil can test cross stream voltage, DC voltage, but structure more complicated, what have also needs external battery.
Summary of the invention
The purpose of this utility model is at above-mentioned deficiency, provide a kind of simple in structure, can clear and intuitive resolution alternating voltage, the alternating flashing light test pencil of DC voltage and DC voltage polarity, reliable operation.
Realize that the technical scheme that the utility model purpose is adopted is:
This alternating flashing light test pencil, the hand touched electrode that test contact, spring are housed, is electrically connected in insulation crust with spring is characterized in being equipped with the circuit board that two ends are electrically connected with test contact and spring respectively between test contact and spring; The circuit board end that is electrically connected with test contact is electrically connected with current-limiting resistance, two alignment detection circuits of forming by the flashing diode of two reverse different colours in parallel between the current-limiting resistance other end and the circuit board end that is electrically connected with spring, each flashing diode is in series with the diode reverse with flashing diode respectively, and each flashing diode is parallel with capacitor respectively.
In order to increase the creepage distance of current-limiting resistance, safe and reliable, current-limiting resistance can be composed in series by two resistance.
The utility model is simple in structure, can select existing metal or plastic or other material for use, and commercially available universal electric components and parts, and adopts conventional electronics manufacturing engineering processing and fabricating, implements easily.
The utility model is under the situation that does not need additional power source, utilize tested energy conversion to become the required energy of circuit, and application electric technology realize that the alternating flashing light of two different colours flashing diodes reaches the purpose of differentiating alternating voltage, DC voltage and DC voltage polarity.The utility model is simple in structure, cost is low, do not need additional power source, easy to use, the polarity of resolution alternating voltage, DC voltage and DC voltage that can be clear and intuitive, safe and reliable, can be widely used in the resolution of secondary loop in power system 80-500 volt alternating voltage, DC voltage and DC voltage polarity, have promotional value.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Fig. 2 is the electrical schematic diagram of a kind of embodiment of the utility model.
Fig. 3 is the electrical schematic diagram of the another kind of embodiment of the utility model.
Fig. 4 is the electrical schematic diagram of another embodiment of the utility model.
Among the figure: 1 insulation crust, 2 test contact, 3 springs, 4 hand touched electrode, 5 circuit boards, 6 test contact end in contact copper sheets, 7 spring terminals contact copper sheet, 8 green windows, 9 red windows, R1, R2 current-limiting resistance, D1 flashed green diode, D2, D3 isolating diode, the red flashing diode of D4, C1, C2 capacitor.
Embodiment
The utility model is further described with the embodiment that provides below in conjunction with accompanying drawing.
Embodiment 1:
With reference to accompanying drawing 1,2, this alternating flashing light test pencil, the hand touched electrode 4 that test contact 2, spring 3 are housed, is electrically connected in insulation crust 1 with spring, circuit board 5 is housed between test contact and spring, the test contact end in contact copper sheet 6 of circuit board one end contacts with test contact, and the spring terminal contact copper sheet 7 of the circuit board other end contacts with spring.Test contact end in contact copper sheet is electrically connected with the current-limiting resistance R1, the R2 that connect on being contained in circuit board, the a end of current-limiting resistance R2 contacts two alignment detection circuits of being made up of reverse flashed green diode D1 and red flashing diode D4 in parallel between the copper sheet with spring terminal, the isolating diode D2 of one of flashed green diode D1 series connection and flashed green diode reverse, the red flashing diode D4 isolating diode D3 reverse that connects with red flashing diode; Flashed green diode D1 capacitor C1 in parallel, red flashing diode D4 capacitor C2 in parallel.The flashed green diode is arranged in the green windows 8 on the insulation crust, and red flashing diode is arranged in the red window 9 on the insulation crust.
The utility model is formed two alignment detection circuits of the measurement electric power polarity of two parallel connections with two different flashing diodes of reverse color: when measured power supply is the direct current negative polarity, isolating diode D2 conducting, power supply is capacitor C1 charging, when condenser voltage is elevated to desired parameters, start working flashed green diode D1 flash of light of circuit shows that measured power supply is a direct current negative polarity power supply; When if measured power supply is straight polarity, isolating diode D3 conducting, power supply is capacitor C2 charging, when condenser voltage was elevated to desired parameters, the circuit red flashing diode D4 flash of light of starting working showed that measured power supply is the straight polarity power supply; The same principle, when measured power supply was interchange, the testing circuit of the measurement electric power polarity of two parallel connections was worked simultaneously, and flashed green diode and red flashing diode glisten simultaneously, show that measured power supply is an AC power.The current-limiting resistance branch is composed in series by two current-limiting resistances, has increased the creepage distance of current-limiting resistance, the work safety and reliability.
Using method of the present utility model and general test pencil are basic identical: when measuring the power supply classification, one holds test pencil hand touched electrode, the another hand touches earth point, contact measured object gently with the test pencil test contact, all glisten as red flashing diode, flashed green diode, illustrate that measured object has alternating voltage; As have only red flashing diode flash of light, illustrate that measured object has " just " DC voltage; As have only the flashed green diode flash, illustrate that measured object has " bearing " DC voltage.
Embodiment 2:
With reference to accompanying drawing 1,3, the physical construction of this alternating flashing light test pencil, electrical installation principle etc. are all identical with embodiment 1.The wiring position of each components and parts as shown in Figure 3 on the different just circuit boards.
Embodiment 3:
With reference to accompanying drawing 1,4, identical with embodiment 2, the physical construction of this alternating flashing light test pencil, electrical installation principle etc. are all identical with embodiment 1.The wiring position of each components and parts as shown in Figure 4 on the different just circuit boards.
The utility model designer presses the foregoing description, select metal and plastic or other material for use, and commercially available universal electric components and parts such as super bright flicker light emitting diode, implement a series of this alternating flashing light test pencils, be used for the resolution of secondary loop in power system 80-500 volt alternating voltage, DC voltage and DC voltage polarity.Show that through the internal simulation experiment this alternating flashing light test pencil is easy to use, safe and reliable, is a kind of simple, the practical test pencil that can differentiate power supply classification and direct supply polarity.
Claims (2)
1, a kind of alternating flashing light test pencil, the hand touched electrode that test contact, spring are housed, is electrically connected in insulation crust with spring is characterized in that being equipped with the circuit board that two ends are electrically connected with test contact and spring respectively between test contact and spring; The circuit board end that is electrically connected with test contact is electrically connected with current-limiting resistance, two alignment detection circuits of forming by the flashing diode of two reverse different colours in parallel between the current-limiting resistance other end and the circuit board end that is electrically connected with spring, each flashing diode is in series with the diode reverse with flashing diode respectively, and each flashing diode is parallel with capacitor respectively.
2, alternating flashing light test pencil according to claim 1 is characterized in that described current-limiting resistance is composed in series by two resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620028910 CN2901327Y (en) | 2006-06-06 | 2006-06-06 | Color changing flash test pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620028910 CN2901327Y (en) | 2006-06-06 | 2006-06-06 | Color changing flash test pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901327Y true CN2901327Y (en) | 2007-05-16 |
Family
ID=38085491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620028910 Expired - Fee Related CN2901327Y (en) | 2006-06-06 | 2006-06-06 | Color changing flash test pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901327Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336167A (en) * | 2013-05-22 | 2013-10-02 | 国家电网公司 | AC-DC test pen |
-
2006
- 2006-06-06 CN CN 200620028910 patent/CN2901327Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336167A (en) * | 2013-05-22 | 2013-10-02 | 国家电网公司 | AC-DC test pen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |