CN104064087A - Power source short circuit demonstration device - Google Patents
Power source short circuit demonstration device Download PDFInfo
- Publication number
- CN104064087A CN104064087A CN201410287951.1A CN201410287951A CN104064087A CN 104064087 A CN104064087 A CN 104064087A CN 201410287951 A CN201410287951 A CN 201410287951A CN 104064087 A CN104064087 A CN 104064087A
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- short circuit
- power supply
- power source
- bulb
- demonstration device
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Abstract
The invention belongs to the technical field of study experiment tools and especially relates to a power source short circuit demonstration device. The invention discloses a power source short circuit demonstration device which is characterized in that the power source short circuit demonstration device comprises a power source. The power source is connected with a bulb through a wire; a switch is arranged between the power source and the bulb; and the power source, the switch and the bulb form a circuit loop. The circuit loop is provided with a heating guide wire. The heating guide wire and the bulb are in parallel connection in the circuit loop. An inflammable article is tied to the heating guide wire. According to the power source short circuit demonstration device, the harm due to short circuit can be well demonstrated.
Description
Technical field
The invention belongs to study experiment appliance technical field, relate in particular to a kind of power supply short circuit apparatus for demonstrating.
Background technology
In science teaching material, with a wire, the positive and negative polarities of one joint dry cell are connected, be used for illustrating whether the harm of power supply short circuit damages electrical equipment, even initiation fire.But in experimentation,, to a kind of very effect of shock of student, cannot not cause the attention that student is enough.So this experiment providing in teaching material cannot meet teaching practice.Thereby make the harm that student causes for short circuit not have an impression intuitively, cannot reach the object of experiment.
Summary of the invention
The object of the invention is to solve above-described technical matters, a kind of power supply short circuit apparatus for demonstrating of the harm experiment can well illustrative circuitry short circuit causing is provided, its technical scheme is as follows:
Power supply short circuit apparatus for demonstrating, it is characterized in that, described power supply short circuit apparatus for demonstrating comprises power supply, described power supply is connected with bulb by wire, between described power supply and bulb, be provided with switch, described power supply, switch and bulb built-up circuit loop, be provided with heating seal wire in described circuit loop, described heating seal wire and bulb form and are connected in parallel in circuit loop, on described heating seal wire, tie up and are provided with fire goods.
Optimal way is that described power supply is dry cell.
Optimal way is, described fire goods are match, and the match end of described match contacts with heating seal wire.
Power supply short circuit apparatus for demonstrating provided by the invention, when in use, closes a switch, thus the closed short-circuit condition that forms of circuit loop.Electric current flows out after switch from the positive pole of power supply, flows through the negative pole formation short circuit of finally getting back to power supply from heating seal wire.Because heating seal wire is after the heating of excess current, thereby the heating of heating seal wire produces heat, match end is heated.In the time that heat reaches the burning-point of match end, thereby match end is lighted match burning, thereby has completed the experimental demonstration that causes fire to occur due to short circuit.Can see intuitively demonstration effect, can make again student leave deep impression.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention.
Embodiment
Illustrate embodiment below in conjunction with Fig. 1:
As shown in Figure 1, power supply short circuit apparatus for demonstrating, described power supply short circuit apparatus for demonstrating comprises power supply 1, described power supply 1 is connected with bulb 2 by wire 6, between described power supply 1 and bulb 2, be provided with switch 3, described power supply 1, switch 3 and bulb 2 built-up circuit loops, be provided with heating seal wire 4 in described circuit loop, described heating seal wire 4 forms and is connected in parallel in circuit loop with bulb 2, on described heating seal wire 4, ties up and is provided with fire goods 5.
Optimal way is that described power supply 1 is dry cell.
Optimal way is, described fire goods 5 are match, and the match end of described match contacts with heating seal wire.
Power supply short circuit apparatus for demonstrating provided by the invention, when in use, closes a switch, thus the closed short-circuit condition that forms of circuit loop.Electric current flows out after switch from the positive pole of power supply, flows through the negative pole formation short circuit of finally getting back to power supply from heating seal wire.Because heating seal wire is after the heating of excess current, thereby the heating of heating seal wire produces heat, match end is heated.In the time that heat reaches the burning-point of match end, thereby match end is lighted match burning, thereby has completed the experimental demonstration that causes fire to occur due to short circuit.Can see intuitively demonstration effect, can make again student leave deep impression.
Claims (3)
1. power supply short circuit apparatus for demonstrating, it is characterized in that, described power supply short circuit apparatus for demonstrating comprises power supply, described power supply is connected with bulb by wire, between described power supply and bulb, be provided with switch, described power supply, switch and bulb built-up circuit loop, be provided with heating seal wire in described circuit loop, described heating seal wire and bulb form and are connected in parallel in circuit loop, on described heating seal wire, tie up and are provided with fire goods.
2. power supply short circuit apparatus for demonstrating as claimed in claim 1, is characterized in that, described power supply is dry cell.
3. power supply short circuit apparatus for demonstrating as claimed in claim 1, is characterized in that, described fire goods are match, and the match end of described match contacts with heating seal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287951.1A CN104064087A (en) | 2014-06-25 | 2014-06-25 | Power source short circuit demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287951.1A CN104064087A (en) | 2014-06-25 | 2014-06-25 | Power source short circuit demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104064087A true CN104064087A (en) | 2014-09-24 |
Family
ID=51551771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410287951.1A Pending CN104064087A (en) | 2014-06-25 | 2014-06-25 | Power source short circuit demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104064087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107657878A (en) * | 2017-11-16 | 2018-02-02 | 公安部四川消防研究所 | A kind of electrical fire is multiple and suppresses the demo platform of electric ignition source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054202Y (en) * | 2007-06-11 | 2008-04-30 | 董俊 | Short circuit demonstration device |
| CN202584512U (en) * | 2012-04-12 | 2012-12-05 | 雷海平 | Short circuit and fuse effect experimental device |
| CN202601042U (en) * | 2011-12-08 | 2012-12-12 | 周正 | Device for demonstrating harms caused by short circuit |
| CN103456217A (en) * | 2013-10-08 | 2013-12-18 | 熊德永 | Multifunctional short circuit demonstration device |
-
2014
- 2014-06-25 CN CN201410287951.1A patent/CN104064087A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054202Y (en) * | 2007-06-11 | 2008-04-30 | 董俊 | Short circuit demonstration device |
| CN202601042U (en) * | 2011-12-08 | 2012-12-12 | 周正 | Device for demonstrating harms caused by short circuit |
| CN202584512U (en) * | 2012-04-12 | 2012-12-05 | 雷海平 | Short circuit and fuse effect experimental device |
| CN103456217A (en) * | 2013-10-08 | 2013-12-18 | 熊德永 | Multifunctional short circuit demonstration device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107657878A (en) * | 2017-11-16 | 2018-02-02 | 公安部四川消防研究所 | A kind of electrical fire is multiple and suppresses the demo platform of electric ignition source |
| CN107657878B (en) * | 2017-11-16 | 2019-06-28 | 公安部四川消防研究所 | A kind of electrical fire is multiple and inhibits the demo platform of electrical ignition source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |