CN204166768U - Middle School Physics over load experimental demonstration device - Google Patents
Middle School Physics over load experimental demonstration device Download PDFInfo
- Publication number
- CN204166768U CN204166768U CN201420416633.6U CN201420416633U CN204166768U CN 204166768 U CN204166768 U CN 204166768U CN 201420416633 U CN201420416633 U CN 201420416633U CN 204166768 U CN204166768 U CN 204166768U
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- CN
- China
- Prior art keywords
- bulb
- crocodile clip
- resistance wire
- match
- spiral resistance
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- Expired - Fee Related
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Abstract
The utility model belongs to instructional device field, be specifically related to a kind of Middle School Physics over load experimental demonstration device, comprise base, circuit component plate, spiral resistance wire, circuit component plate is fixed on base, match is provided with below described spiral resistance wire, match is placed on socket, described circuit component plate is provided with bulb L, bulb L' and telegraph key, between bulb L and bulb L' by wired in series together, the other end of bulb L is connected with spiral resistance wire, the other end of bulb L' be connected crocodile clip A, the spiral resistance wire other end and crocodile clip B, with the external crocodile clip C of wire between bulb L and bulb L'.The utility model over load experimental demonstration device, demonstrates short circuit and overload two kinds of circuit phenomenons, deepens student to the understanding of these two kinds of phenomenons by contrast in an apparatus for demonstrating; Practical match replaces masking foil, both can observe experimental phenomena, and again reduce experimental cost.
Description
Technical field
The utility model belongs to instructional device field, is specifically related to a kind of Middle School Physics over load experimental demonstration device.
Background technology
Short circuit and overload experiment are very important two experiments of Middle School Physics, but due to short circuit and the danger of overload phenomenon, explosive (generation electric arc), teacher is afraid to do sth, even avoid and not doing, therefore cause student to understand comprehensively not deeply over load, to short circuit or overload accident (Crash) severity, dangerous without clear and definite visual understanding.
In existing experimental demonstration device, if patent name is short circuit and the action of fuse experimental provision (patent No.: 201220152507.5) only demonstrate short circuit, because short circuit is similar to the consequence that overload produces, therefore can demonstrate in one apparatus, by Contrast enhanced student to the understanding of short circuit with overload phenomenon; In addition, in some lecture experiments, usually use masking foil to illustrate in short circuit or overload procedure be and easily produce large calorimetric, cost is higher.The utility model, for providing a kind of Middle School Physics over load experimental demonstration device, adopts inflammable match to replace masking foil, reduces experimental cost.
Utility model content
The utility model provides a kind of Middle School Physics over load experimental demonstration device, its object is to, demonstrate over load two kinds of phenomenons in one apparatus, use match to replace masking foil simultaneously, under the prerequisite not affecting experimental demonstration effect, reduce experimental cost.
To achieve these goals, the technical solution adopted in the utility model is:
This Middle School Physics over load experimental demonstration device, comprise base, circuit component plate, spiral resistance wire, circuit component plate is fixed on base, match is provided with below described spiral resistance wire, match is placed on socket, described circuit component plate is provided with bulb L, bulb L' and telegraph key, between bulb L and bulb L' by wired in series together, the other end of bulb L is connected with spiral resistance wire, the other end of bulb L' be connected crocodile clip A, the spiral resistance wire other end and crocodile clip B, with the external crocodile clip C of wire between bulb L and bulb L'.
During demonstration short circuit, crocodile clip B and crocodile clip C is received in low-tension supply, now observes bulb L and light, then closed telegraph key, wait a moment and observe match and lighted, demonstrate complete, lift telegraph key, by crocodile clip B and crocodile clip C from low-tension supply.
During demonstration overload, first change a match, crocodile clip A and crocodile clip B is received in low-tension supply, now observe bulb L and bulb L' colleague to light, but brightness is slightly dark, observes match and lighted after a moment, demonstrate complete, by crocodile clip A and crocodile clip B from low-tension supply.
Compared with prior art, the utility model has the advantage of:
The utility model Middle School Physics over load experimental demonstration device, demonstrates short circuit and overload two kinds of circuit phenomenons, deepens student to the understanding of these two kinds of phenomenons by contrast in an apparatus for demonstrating; Practical match replaces masking foil, both can observe experimental phenomena, and again reduce experimental cost.
Accompanying drawing explanation
Mark in the content expressed each width accompanying drawing of the utility model instructions below and figure is briefly described:
Fig. 1 is the structural representation of the utility model Middle School Physics over load experimental demonstration device;
Mark in above-mentioned figure is:
1, base, 2, circuit component plate, 3, bulb L, 4, socket, 5, match, 6, crocodile clip B, 7, screw thread resistance wire, 8, telegraph key, 9, crocodile clip C, 10, bulb L', 11, crocodile clip A.
Embodiment
Contrast accompanying drawing below, by the description to optimum embodiment, embodiment of the present utility model is described in further detail.
As shown in Figure 1, Middle School Physics over load experimental demonstration device, comprise base 1, circuit component plate 2, spiral resistance wire 7, circuit component plate 2 is fixed on base 1, match 5 is provided with below described spiral resistance wire 7, match 5 is placed on socket 4, described circuit component plate 2 is provided with bulb L3, bulb L'10 and telegraph key 8, between bulb L3 and bulb L'10 by wired in series together, the other end of bulb L3 is connected with spiral resistance wire 7, the other end of bulb L'10 be connected crocodile clip A11, spiral resistance wire 7 other end and crocodile clip B6, with the external crocodile clip C9 of wire between bulb L3 and bulb L'10.
During demonstration short circuit, crocodile clip B6 and crocodile clip C9 is received in low-tension supply, now observes bulb L3 and light, then closed telegraph key 8, wait a moment and observe match 5 and lighted, demonstrate complete, lift telegraph key 8, by crocodile clip B6 and crocodile clip C9 from low-tension supply.
During demonstration overload, first change a match 5, crocodile clip A11 and crocodile clip B6 is received in low-tension supply, now observe bulb L3 and bulb L'10 colleague to light, but brightness is slightly dark, observes match 5 and lighted after a moment, demonstrate complete, by crocodile clip A11 and crocodile clip B6 from low-tension supply.
In sum, in an apparatus for demonstrating, demonstrate short circuit and overload two kinds of circuit phenomenons, deepen student to the understanding of these two kinds of phenomenons by contrast; Practical match replaces masking foil, both can observe experimental phenomena, and again reduce experimental cost.
The above is exemplarily described the utility model; obvious the utility model specific implementation is not subject to the restrictions described above; no matter be do any change in its shape or structure; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (1)
1. a Middle School Physics over load experimental demonstration device, comprise base (1), circuit component plate (2), spiral resistance wire (7), circuit component plate (2) is fixed on base (1), it is characterized in that, described spiral resistance wire (7) below is provided with match (5), match (5) is placed on socket (4), described circuit component plate (2) is provided with bulb L (3), bulb L'(10) and telegraph key (8), bulb L (3) and bulb L'(10) between by wired in series together, the other end of bulb L (3) is connected with spiral resistance wire (7), bulb L'(10) the other end be connected crocodile clip A (11), the spiral resistance wire other end and crocodile clip B (6), bulb L (3) and bulb L'(10) between with wire external crocodile clip C (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420416633.6U CN204166768U (en) | 2014-07-25 | 2014-07-25 | Middle School Physics over load experimental demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420416633.6U CN204166768U (en) | 2014-07-25 | 2014-07-25 | Middle School Physics over load experimental demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204166768U true CN204166768U (en) | 2015-02-18 |
Family
ID=52540434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420416633.6U Expired - Fee Related CN204166768U (en) | 2014-07-25 | 2014-07-25 | Middle School Physics over load experimental demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204166768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702139A (en) * | 2016-04-21 | 2016-06-22 | 国网江苏省电力公司职业技能训练基地 | System for displaying body feeling of line overloading |
| CN107767746A (en) * | 2017-11-16 | 2018-03-06 | 公安部四川消防研究所 | A kind of wire aggregation heating fire risk apparatus for demonstrating |
-
2014
- 2014-07-25 CN CN201420416633.6U patent/CN204166768U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702139A (en) * | 2016-04-21 | 2016-06-22 | 国网江苏省电力公司职业技能训练基地 | System for displaying body feeling of line overloading |
| CN107767746A (en) * | 2017-11-16 | 2018-03-06 | 公安部四川消防研究所 | A kind of wire aggregation heating fire risk apparatus for demonstrating |
| CN107767746B (en) * | 2017-11-16 | 2019-06-28 | 公安部四川消防研究所 | A kind of conducting wire aggregation fever fire risk apparatus for demonstrating |
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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: 20150218 Termination date: 20150725 |
|
| EXPY | Termination of patent right or utility model |