CN204155524U - The electromagnetic induction teaching aid of energy sounding - Google Patents
The electromagnetic induction teaching aid of energy sounding Download PDFInfo
- Publication number
- CN204155524U CN204155524U CN201420693130.3U CN201420693130U CN204155524U CN 204155524 U CN204155524 U CN 204155524U CN 201420693130 U CN201420693130 U CN 201420693130U CN 204155524 U CN204155524 U CN 204155524U
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- CN
- China
- Prior art keywords
- coil
- iron core
- loudspeaker
- teaching aid
- electromagnetic induction
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- 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 utility model belongs to physical teaching aid field, in order to make up the deficiency of existing teaching aid, the utility model proposes a kind of teaching aid: the electromagnetic induction teaching aid of energy sounding, comprise the first coil, second coil, it is characterized in that: the first coil is electrically connected with one for plugged earphone jack, the headset plug of electric signal is provided to the first coil, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, also comprise one and be used for insertion first coil mesopore, the U-iron core of the second coil mesopore, also comprise one to be used for connecting its opening of U-iron core, make the strip iron core that U-iron core becomes iron core-closed, also be provided with between the second coil and loudspeaker: for amplifying the second coil electric signal to provide the amplifier of more big current to loudspeaker.The utility model structure is simple, benefits to student's inquiry activity.
Description
Technical field
The utility model belongs to physical teaching aid field, in particular for the teaching aid field of electromagnetic induction.
Background technology
The existing teaching aid about electromagnetic induction is very abundant, but, still there is the experiment being not easy to demonstrate and study.Such as how simply to demonstrate the electromagnetic induction phenomenon of exchange current? this problem is all the problem being worth solving.
Utility model content
In order to make up the deficiency of existing teaching aid, the utility model proposes a kind of apparatus for demonstrating for electromagnetic induction teaching, the utility model is such:
For the apparatus for demonstrating of electromagnetic induction teaching, comprise be coiled into annular the first coil, be used near the first coil to make the second coil of generation electromagnetic induction phenomenon, second coil also coiling is annular, it is characterized in that: the first coil is electrically connected with one for plugged earphone jack, the headset plug providing electric signal to the first coil, the second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion.
The utility model can also like this:
For the teaching aid of electromagnetic induction teaching, comprise the first coil being coiled into annular, be used near the first coil to make the second coil of generation electromagnetic induction phenomenon, second coil also coiling is annular, it is characterized in that: the first coil is electrically connected with one for plugged earphone jack, the headset plug of electric signal is provided to the first coil, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, also comprise one and be used for insertion first coil mesopore, the U-iron core of the second coil mesopore, also comprise one to be used for connecting its opening of U-iron core, make the strip iron core that U-iron core becomes iron core-closed.
The utility model can also like this:
The electromagnetic induction teaching aid of energy sounding, comprise the first coil being coiled into annular, be used near the first coil to make the second coil of generation electromagnetic induction phenomenon, second coil also coiling is annular, it is characterized in that: the first coil is electrically connected with one for plugged earphone jack, the headset plug of electric signal is provided to the first coil, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, also comprise one and be used for insertion first coil mesopore, the U-iron core of the second coil mesopore, also comprise one to be used for connecting its opening of U-iron core, make the strip iron core that U-iron core becomes iron core-closed, also be provided with between the second coil and loudspeaker: for amplifying the second coil electric signal to provide the amplifier of more big current to loudspeaker.
The utility model structure is simple, for teaching, can promote teaching efficiency, be conducive to student and carry out inquiry activity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the structural representation of the utility model embodiment two local.
Fig. 3 is the structural representation of the utility model embodiment three.
In figure: 1-first coil, 11-first connecting line, 12-headset plug, 2-second coil, 21-second connecting line, 22-loudspeaker, 23-amplifier, 31-U shape iron core, 32-strip iron core.
Embodiment
Embodiment one
See accompanying drawing 1, it is structural representation of the present utility model.
For the apparatus for demonstrating of electromagnetic induction teaching, comprise be coiled into annular the first coil 1, be used near the first coil 1 to make the second coil 2 of generation electromagnetic induction phenomenon, second coil 2 also coiling is annular, it is characterized in that: the first coil 1 be electrically connected with one for plugged earphone jack, provide headset plug 12, second coil 2 of electric signal to be electrically connected with a loudspeaker 22 for electric energy conversion being acoustic energy to the first coil 1.
Electric connection described in the utility model is for connect with wire: the first coil 1 and headset plug 12 are connected with wire, and this wire is labeled as the first wire 11, second coil 2 in the accompanying drawings and is connected with loudspeaker 22 second wire 21.
Using method: headset plug 12 is inserted the device providing signal, the earphone jack of such as mobile phone, then, allows the second coil 2 near the first coil 1, so loudspeaker 22 is sounded.This is an application of electromagnetic induction principle.
Loudspeaker preferred earpiece.Various equivalent modifications should be known, and the first coil 1 and the second coil 2 will have the suitable number of turn.
Embodiment two
See accompanying drawing 2.The utility model partial structurtes schematic diagram.
A kind of electromagnetic induction teaching aid, comprise the first coil 1 being coiled into annular, be used near the first coil 1 to make the second coil 2 of generation electromagnetic induction phenomenon, second coil 2 also coiling is annular, it is characterized in that: the first coil 1 is electrically connected with one for plugged earphone jack, the headset plug 12 of electric signal is provided to the first coil 1, second coil 2 is electrically connected with a loudspeaker 22 for electric energy conversion being acoustic energy, also comprise one and be used for insertion first coil 1 mesopore, the U-iron core 31 of the second coil 2 mesopore, also comprise one to be used for connecting its opening of U-iron core 31, make the strip iron core 32 that U-iron core 31 becomes iron core-closed.
Accompanying drawing 2 has showed the shape of U-iron core and strip iron core 32.
Using method: two parallel-segment of the first coil 1, second coil 2 being inserted in respectively U-iron core 31, the using method then with reference to embodiment one uses, and finds: the volume of loudspeaker becomes large, illustrates that iron core serves effect.Again strip iron core 32 is put into the opening part of U-iron core 31, make U-iron core 31 become one iron core-closed, find, the volume of loudspeaker increases further.Such teaching process is beneficial to guiding student and analyzes magnetic circuit.
Embodiment three
See accompanying drawing 3.It is structural representation of the present utility model.
The electromagnetic induction teaching aid of energy sounding, comprise the first coil 1 being coiled into annular, be used near the first coil 1 to make the second coil 2 of generation electromagnetic induction phenomenon, second coil 2 also coiling is annular, it is characterized in that: the first coil 1 is electrically connected with one for plugged earphone jack, the headset plug 12 of electric signal is provided to the first coil 1, second coil 2 is electrically connected with a loudspeaker 22 for electric energy conversion being acoustic energy, also comprise one and be used for insertion first coil 1 mesopore, the U-iron core 31 of the second coil 2 mesopore, also comprise one to be used for connecting its opening of U-iron core 31, make the strip iron core 32 that U-iron core 31 becomes iron core-closed, also be provided with between the second coil 2 and loudspeaker 22: for amplifying the second coil 2 electric signal to provide the amplifier 23 of more big current to loudspeaker 22.
Using method: see the using method of embodiment one, embodiment two.Amplifier 23 belongs to prior art, and various equivalent modifications should be known will have power supply to provide energy for amplifier 23.The trade name of amplifier 23 is commonly called: power amplifier.
The utility model structure is simple, benefits to student's inquiry activity.
Claims (1)
1. the electromagnetic induction teaching aid of energy sounding, comprise the first coil being coiled into annular, be used near the first coil to make the second coil of generation electromagnetic induction phenomenon, second coil also coiling is annular, it is characterized in that: the first coil is electrically connected with one for plugged earphone jack, the headset plug of electric signal is provided to the first coil, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, also comprise one and be used for insertion first coil mesopore, the U-iron core of the second coil mesopore, also comprise one to be used for connecting its opening of U-iron core, make the strip iron core that U-iron core becomes iron core-closed, also be provided with between the second coil and loudspeaker: for amplifying the second coil electric signal to provide the amplifier of more big current to loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693130.3U CN204155524U (en) | 2014-11-19 | 2014-11-19 | The electromagnetic induction teaching aid of energy sounding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693130.3U CN204155524U (en) | 2014-11-19 | 2014-11-19 | The electromagnetic induction teaching aid of energy sounding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204155524U true CN204155524U (en) | 2015-02-11 |
Family
ID=52513623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420693130.3U Expired - Fee Related CN204155524U (en) | 2014-11-19 | 2014-11-19 | The electromagnetic induction teaching aid of energy sounding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204155524U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393926A (en) * | 2018-12-31 | 2019-11-01 | 浙江理工大学 | Stab bubble generating machine |
-
2014
- 2014-11-19 CN CN201420693130.3U patent/CN204155524U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393926A (en) * | 2018-12-31 | 2019-11-01 | 浙江理工大学 | Stab bubble generating machine |
| CN110393926B (en) * | 2018-12-31 | 2024-04-09 | 浙江理工大学 | Bubble stamping machine |
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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: 20150211 Termination date: 20151119 |
|
| EXPY | Termination of patent right or utility model |