CN2260359Y - Imitating demonstration instrument for alternating current - Google Patents
Imitating demonstration instrument for alternating current Download PDFInfo
- Publication number
- CN2260359Y CN2260359Y CN 96227317 CN96227317U CN2260359Y CN 2260359 Y CN2260359 Y CN 2260359Y CN 96227317 CN96227317 CN 96227317 CN 96227317 U CN96227317 U CN 96227317U CN 2260359 Y CN2260359 Y CN 2260359Y
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- CN
- China
- Prior art keywords
- commutator
- alternating current
- crank
- paper
- coil
- 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
The utility model discloses a simulative demonstrator for alternating current, which overcomes the disadvantages that the demonstrator is not vivid and visual in the prior art. A crank shaft is provided with a cam mechanism and a commutator, a machine base is connected with two electric brushes, and the rod of the cam mechanism is connected with the contact head of a slide rheostat. A loop is provided with a luminous indication indicator. Both ends of the loop are respectively connected with two semicircular rings of the commutator, and the two electric brushes are respectively pressed and connected with the two semicircular rings of the commutator. One path of both ends of a power supply is connected with a bulb and the slide rheostat in series. The other path is connected with the two electric brushes. The utility model is suitable for the teaching and the experiments of middle school physics.
Description
The utility model relates to physics educational apparatus, especially a kind of alternating current analog demonstrator.
The structure of alternating current demonstration device of the prior art is such: be provided with simulation magnetic pole, square coil, support and crank, square coil is installed on the crank axle, crank is placed on the support by a bearing, when the teacher does cyclical variation in generation, size and the direction of explanation alternating current, rotating crank limit, limit is explained, and can not be visually the cyclical variation of generation, size and the direction of alternating current is demonstrated out.
The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned existing technology, luminous indication that a kind of coil is provided with the indicator current direction is provided, and can demonstrates the alternating current analog demonstrator of size of current.
The purpose of this utility model realizes by following scheme: be provided with the simulation magnetic pole, coil, support and crank, crank and simulation magnetic pole all are arranged on the support, crank axle is mounted with the commutator of a cam mechanism and two semicircular ring formation, support also is connected with two brushes, the bar of cam mechanism connects with the contact of slide rheostat, coil is provided with luminous indication, the coil two ends connect with two semicircular ring of commutator respectively, two brushes are crimped on respectively on two semicircular ring of commutator, both ends of power one tunnel is in series with bulb, slide rheostat, another road are connected on two brushes.
In addition, the utility model also is provided with the image board that outer visual paper is posted in a front, is provided with internal layer image paper at the back side of the visual paper of skin, and this internal layer image paper roll is mounted with belt between power wheel and the crank axle on power wheel.
Luminous indication of the present utility model can show that the direction of induced current changes, and bulb brightness can show the size variation of induced current, shows visual in imagely, is convenient to teacher's explanation, is easy to student's understanding.
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a profile synoptic diagram of the present utility model.
Fig. 2 is a structural representation of the present utility model.
With reference to Fig. 1, Fig. 2, simulation magnetic pole (3), bulb (2), brush (9) and bearing seat (4) all are fixed on the support (1), crank (5) is placed on the bearing seat (4), crank axle (6) commutator (8) that a cam (7) and two semicircle beckets constitute that is fixedly connected, the bar of cam mechanism (16) connects with the contact (21) of slide rheostat (18), square coil (10) two ends connect with two semicircle beckets of commutator (8) respectively, coil (10) is provided with the luminous indication of being made up of light emitting diode (11), the direction of arrow of this luminous indication (11) can be indicated the direction of the induced current of generation, two brushes (9) are crimped on respectively on the two semicircle beckets of commutator (8), lead up to lead (20) and be in series with bulb (2) in power supply (19) two ends, slide rheostat (18), another road is connected on two brushes (9) by lead (20).Image board (12) is not in the side of simulating magnetic pole (3), the outer visual paper (13) of white is posted in the front, be carved with the sinusoidal curve image (15) of the alternating current of inducting on it, the internal layer image paper (14) that does not constitute at the back side of the visual paper of skin (13) by red, white two sections colors, this internal layer image paper (14) is walked around two perpendicular long slits that are located on the image board (12) and is wound on the power wheel (23) that is located on image board (12) framework, hangs with belt (22) by a breast wheel cover between power wheel (23) and crank axle (6).
During use, shake crank (5), under the effect of cam (7) and sealed spring (17), bar (16) moves up and down, thereby driving contact (21) slides to change resistance along slide rheostat (18), thereby change the brightness of bulb (2), simultaneously, coil (10) rotates, commutator (8) can change by coil (10) sense of current, thereby the luminous indication (11) that the driven for emitting lights diode is formed is luminous with the indicator current direction, when crank axle (6) rotates, driving power wheel (23) by belt (22) rotates, internal layer image paper (14) is moved, when the white portion of internal layer image paper (14) and outer visual paper (13) are overlapping, then can't see sinusoidal crank image (15), when the red part of internal layer image paper is overlapping with the visual paper of skin (13), then see red sinusoidal curve image (15).
Claims (2)
1, a kind of alternating current analog demonstrator, be provided with simulation magnetic pole (3), coil (10), support (1) and crank (5), crank (5) and simulation magnetic pole (3) all are arranged on the support (1), it is characterized in that: crank axle (6) also is mounted with the commutator (8) of a cam mechanism and two semicircular ring formation, support (1) also is connected with two brushes (9), the bar of cam mechanism (16) connects with the contact (21) of slide rheostat (1), coil (10) is provided with luminous indication (11), coil (10) two ends connect with two semicircular ring of commutator (8) respectively, two brushes (9) are crimped on respectively on two semicircular ring of commutator (8), power supply (19) two ends one tunnel are in series with bulb (2), slide rheostat (18), another road are connected on two brushes (9).
2, alternating current analog demonstrator according to claim 1, it is characterized in that: also be provided with the image board (12) that outer visual paper (13) is posted in a front, be provided with internal layer image paper (14) at the back side of the visual paper of skin (13), this internal layer image paper (14) is wound on the power wheel (23), is mounted with belt (22) between power wheel (23) and the crank axle (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227317 CN2260359Y (en) | 1996-02-15 | 1996-02-15 | Imitating demonstration instrument for alternating current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227317 CN2260359Y (en) | 1996-02-15 | 1996-02-15 | Imitating demonstration instrument for alternating current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2260359Y true CN2260359Y (en) | 1997-08-20 |
Family
ID=33905463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96227317 Expired - Fee Related CN2260359Y (en) | 1996-02-15 | 1996-02-15 | Imitating demonstration instrument for alternating current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2260359Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859502A (en) * | 2010-05-17 | 2010-10-13 | 江成奎 | Motor principle demonstrator |
| CN112649377A (en) * | 2020-12-28 | 2021-04-13 | 重庆电子工程职业学院 | Data acquisition device suitable for fruit sugar degree nondestructive test |
-
1996
- 1996-02-15 CN CN 96227317 patent/CN2260359Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859502A (en) * | 2010-05-17 | 2010-10-13 | 江成奎 | Motor principle demonstrator |
| CN112649377A (en) * | 2020-12-28 | 2021-04-13 | 重庆电子工程职业学院 | Data acquisition device suitable for fruit sugar degree nondestructive test |
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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 |