CN102280056A - Short circuit detector - Google Patents
Short circuit detector Download PDFInfo
- Publication number
- CN102280056A CN102280056A CN2010101996806A CN201010199680A CN102280056A CN 102280056 A CN102280056 A CN 102280056A CN 2010101996806 A CN2010101996806 A CN 2010101996806A CN 201010199680 A CN201010199680 A CN 201010199680A CN 102280056 A CN102280056 A CN 102280056A
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- CN
- China
- Prior art keywords
- fuming
- lamp bulb
- short circuit
- resistance wire
- bulb
- 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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Abstract
The invention discloses a short circuit detector, comprising a lamp bulb and a resistance wire in serial connection with the lamp bulb. The short circuit detector is characterized in that an object holding strip is arranged below the resistance wire, a groove is formed on the object holding strip and is internally filled with a fuming object capable of fuming under heat, and the resistance wire penetrates through the surface or the interior of the fuming object. The lamp bulb is a low-voltage lamp bulb. The lamp bulb can be turned off immediately by short-circuiting the lamp bulb by using a short-circuit wire (which can be an independent conducting wire and can also be a branch circuit connected with the lamp bulb in parallel and provided with a switch), current is suddenly increased because the resistance wire is connected with the lamp bulb in series, so that heating is obvious, and the fuming object fumes densely under heat. The short circuit detector has the advantages of higher safety due to adoption of a low-voltage power source, obvious fuming phenomenon, high visibility, simple structure, low cost and benefits to popularization.
Description
Affiliated technical field
The present invention relates to a kind of physics teaching in secondary school instrument, particularly short circuit exploring instrument
Background technology
As everyone knows, the harm of short circuit is very big, and it is one of major reason that causes fire or device damage.In order to improve the understanding of student, in physics teaching in secondary school, often need the process of analog power short circuit to power supply short circuit harmfulness; Yet present most of middle schools all do not have to demonstrate specially the teaching aid of power supply short circuit, generally adopt the method for the direct short circuit of power supply to demonstrate short path principle, and danger is bigger.
Summary of the invention
The objective of the invention is: provide a kind of can be visual in image, short circuit exploring instrument that the short circuit process is simulated in security reliably.
The technical solution adopted in the present invention is: a kind of short circuit exploring instrument, the resistance wire of comprise bulb, connecting with bulb, it is characterized in that: the below of described resistance wire is provided with the storage bar, storage bar top has groove, be equipped with in the groove and meet the thing of being fuming that heat can be fuming, resistance wire passes from the surface of the thing of being fuming or the inside of the thing of being fuming.
Described bulb is that rated voltage is several volts to tens volts a low voltage bulb, as autobulb etc.
After adopting said structure, said apparatus is inserted external low-tension supply, during short circuit, bulb is not luminous, and lead does not generate heat, and the thing of being fuming or not; With the bulb short circuit, bulb extinguishes immediately, connects with bulb because of resistance wire with short-circuit line (can be independent lead, also can be the branch road of and belt switch in parallel with bulb), and electric current increases suddenly, heating obviously, the thing of the being fuming dense smoke of emerging that is heated.
The invention has the beneficial effects as follows: adopt low-tension supply, so security is higher; The phenomenon of being fuming is obvious, visibility is big, and is simple in structure, cost is low, be beneficial to popularization.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure: 1. base, 2. binding post, 3. resistance wire, 4. storage bar, 5. bolt, the thing of 6. being fuming, 7. erect plate, 8. fuse, 9. bulb.
Embodiment
As shown in Figure 1, be fixed with erect plate 7 above the base 1, be fixed with four binding posts 2 on the erect plate 7 successively, four connecting columns are respectively binding post A, B, C, D, be used to be electrically connected bulb 9 between binding post A, the B, bulb 9 be fixed on erect plate 7 above, be used to be electrically connected fuse 8 between binding post B, the C, be electrically connected with resistance wire 3 between binding post C, the D.
Be fixed with storage bar 4 above being positioned at the erect plate 7 of resistance wire 3 belows, storage bar 4 is connected in above the erect plate 7 by bolt 5, the upper surface of storage bar 4 has groove, perhaps the upper surface of storage bar 4 is spill, in order to the thing 6 of being fuming at the upper surface dress of storage bar 4, resistance wire 3 passes from the surface of the thing 6 of being fuming or the inside of the thing 6 of being fuming, and can fully heat the thing of being fuming at adstante febre in order to resistance wire.
Short-circuit line is an other independent lead (not drawing among the figure).This short-circuit line also can be fixed on above the erect plate with bulb in parallel, only need gauge tap of series connection on short-circuit line, when switch closure, short-circuit line is with the bulb short circuit, when switch disconnected, short-circuit line is place in circuit not, and bulb is normally luminous, because of the fixed short circuit mode in parallel of this kind is a known technology, so the expression of not drawing again.
The described thing 6 of being fuming is met hot be fuming one of them of thing or several potpourri for the medicinal powder on rosin, the match end, carbon dust and so on.
Claims (3)
1. short circuit exploring instrument, the resistance wire of comprise bulb, connecting with bulb is characterized in that: the below of described resistance wire is provided with the storage bar, and storage bar top has groove, be equipped with in the groove and meet the thing of being fuming that heat can be fuming, resistance wire passes from the surface of the thing of being fuming or the inside of the thing of being fuming.
2. short circuit exploring instrument as claimed in claim 1 is characterized in that: described bulb, resistance wire, storage bar all are fixed on the same support.
3. short circuit exploring instrument as claimed in claim 2 is characterized in that: the described thing of being fuming is that medicinal powder, carbon dust on rosin, the match end and so on is met heat be fuming one of them of thing or several potpourri.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101996806A CN102280056A (en) | 2010-06-13 | 2010-06-13 | Short circuit detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101996806A CN102280056A (en) | 2010-06-13 | 2010-06-13 | Short circuit detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102280056A true CN102280056A (en) | 2011-12-14 |
Family
ID=45105478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101996806A Pending CN102280056A (en) | 2010-06-13 | 2010-06-13 | Short circuit detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102280056A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456217A (en) * | 2013-10-08 | 2013-12-18 | 熊德永 | Multifunctional short circuit demonstration device |
-
2010
- 2010-06-13 CN CN2010101996806A patent/CN102280056A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456217A (en) * | 2013-10-08 | 2013-12-18 | 熊德永 | Multifunctional short circuit demonstration device |
| CN103456217B (en) * | 2013-10-08 | 2016-01-06 | 熊德永 | Multifunctional short circuit demonstration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111214 |