CN202948630U - Slide rheostat demonstration model - Google Patents
Slide rheostat demonstration model Download PDFInfo
- Publication number
- CN202948630U CN202948630U CN 201220542555 CN201220542555U CN202948630U CN 202948630 U CN202948630 U CN 202948630U CN 201220542555 CN201220542555 CN 201220542555 CN 201220542555 U CN201220542555 U CN 201220542555U CN 202948630 U CN202948630 U CN 202948630U
- Authority
- CN
- China
- Prior art keywords
- sliding piece
- binding post
- bulbs
- fixed
- binding posts
- 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.)
- Expired - Fee Related
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Abstract
A slide rheostat demonstration model is composed of three organic glass plates, copper coils, eight ceramic lamp holders, eight small bulbs, a metal rod, a sliding piece, four binding posts and a frame. The copper coils are wound on the three organic glass plates, one small lamp holder is connected in series at intervals of two circles, the bulbs are inserted into the lamp holders, two ends of the copper coils are connected with two binding posts and fixed on the organic glass plates, the metal rod penetrates through the sliding piece and has the effect of fixing the sliding piece, and two binding posts are fixed at two ends of the metal rod. The three organic glass plates and the metal rod are fixed together through the frame. When one upper binding post and one lower binding post are connected into a circuit, the small bulbs between the corresponding lower binding post and the sliding piece emit light; when the sliding piece moves towards the direction close to the lower binding post, the number of the light-emitting bulbs is reduced; and when the sliding piece moves towards the direction far away from the lower binding post, the number of the light-emitting bulbs is increased.
Description
Technical field
The utility model relates to a kind of slide rheostat demonstrating model of teaching aid technical field.
Background technology
Slide rheostat is one the most complicated in Junior student experimenting instrument, and the student has any problem to principle and the use understanding of slide rheostat.The coil of slide rheostat is closely to be wound around, and the explanation student by structure also has half knowledge for slide rheostat place in circuit part.This demonstrator can be clear that the coil winding mode of slide rheostat, and after connecting circuit, can directly judge by the situation of observing emitting bulb is which of coil partly accessed circuit.Mobile slide plate, the more convenient coil that goes to observe the place in circuit part of student increases or reduces.Replace the coil of original slide rheostat with the luminous situation of bulb, the student can directly find out it is which part place in circuit from visually being impacted, and it is easier that understanding is got up.Also can further promote the student to the principle of slide rheostat and the understanding of use, the classroom effect is remarkable.
Summary of the invention
The purpose of this utility model is the defective that can not intuitively observe for existing lecture experiment teaching aid, a kind of demonstration device that can intuitively observe which part place in circuit of coil is provided, and the miniature bulb that uses is not the miniature bulb of the inside, traditional laboratory, it is the larger based on halogen bulb of light emitting region, in the situation that do not change supply voltage, visuality is stronger.
Concrete scheme of the present utility model is:
A kind of slide rheostat demonstrating model is characterized in that comprising: three poly (methyl methacrylate) plates (1) 310mm * 50mm * 10mm; Copper coil (2); 8 Ceramic lamp bases (3); (4) 8 of miniature bulbs; Metal bar (5) 310mm; Slide plate (6); Four binding posts (7); Shelf (8); Be tied with copper coil (2) on three poly (methyl methacrylate) plates (1), every two circle series connection lamp sockets (3), be inserted with bulb (4) on lamp socket; Copper coil (2) two ends are connected with two binding posts (7), are fixed on poly (methyl methacrylate) plate (1); Metal bar (5) passes from slide plate (6), plays fixedly slide plate, and two binding posts (7) are fixed at metal bar (5) two ends; Shelf (8) is fixed together three poly (methyl methacrylate) plates (1) and metal bar (5).
The utlity model has simple in structure, the demonstration performance is good, use can interest and the understandability that improve the student be played a positive role in teaching.
Description of drawings
Accompanying drawing is structural representation of the present utility model
Embodiment
Three poly (methyl methacrylate) plates (1) 310mm * 50mm * 10mm; Copper coil (2); 8 Ceramic lamp bases (3); (4) 8 of miniature bulbs; Metal bar (5) 310mm; Slide plate (6); Four binding posts (7); Shelf (8); Be tied with copper coil (2) on three poly (methyl methacrylate) plates (1), every two circle series connection little lamp sockets (3), be inserted with bulb (4) on lamp socket; Copper coil (2) two ends are connected with two binding posts (7), are fixed on poly (methyl methacrylate) plate (1); Metal bar (5) passes from slide plate (6), plays fixedly slide plate, and two binding posts (7) are fixed at metal bar (5) two ends; Shelf (8) is fixed together three poly (methyl methacrylate) plates (1) and metal bar (5), when in upper binding post and lower binding post place in circuit one, miniature bulb between corresponding lower binding post and slide plate is luminous, when slide plate moves to close lower binding post direction, the number of emitting bulb reduces, slide plate is when moving away from lower binding post direction, and the number of emitting bulb increases.
Claims (1)
1. a slide rheostat demonstrating model, is characterized in that comprising: three poly (methyl methacrylate) plates (1) 310mm * 50mm * 10mm; Copper coil (2); 8 Ceramic lamp bases (3); (4) 8 of miniature bulbs; Metal bar (5) 310mm; Slide plate (6); Four binding posts (7); Shelf (8); Be tied with copper coil (2) on three poly (methyl methacrylate) plates (1), every two circle series connection lamp sockets (3), be inserted with bulb (4) on lamp socket; Copper coil (2) two ends are connected with two binding posts (7), are fixed on poly (methyl methacrylate) plate (1); Metal bar (5) passes from slide plate (6), plays fixedly slide plate, and two binding posts (7) are fixed at metal bar (5) two ends; Shelf (8) is fixed together three poly (methyl methacrylate) plates (1) and metal bar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542555 CN202948630U (en) | 2012-10-23 | 2012-10-23 | Slide rheostat demonstration model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542555 CN202948630U (en) | 2012-10-23 | 2012-10-23 | Slide rheostat demonstration model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202948630U true CN202948630U (en) | 2013-05-22 |
Family
ID=48424323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220542555 Expired - Fee Related CN202948630U (en) | 2012-10-23 | 2012-10-23 | Slide rheostat demonstration model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202948630U (en) |
-
2012
- 2012-10-23 CN CN 201220542555 patent/CN202948630U/en not_active Expired - Fee Related
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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: 20130522 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |