CN204178609U - A kind of demonstrator for mutual inductance teaching - Google Patents
A kind of demonstrator for mutual inductance teaching Download PDFInfo
- Publication number
- CN204178609U CN204178609U CN201420700099.1U CN201420700099U CN204178609U CN 204178609 U CN204178609 U CN 204178609U CN 201420700099 U CN201420700099 U CN 201420700099U CN 204178609 U CN204178609 U CN 204178609U
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- coil
- panel
- amplifier
- fixedly connected
- mutual inductance
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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: a kind of demonstration instrument for mutual inductance teaching, comprise base, be fixedly connected with base, be in the panel of perpendicular, it is characterized in that: panel is fixedly connected with audio-frequency generator, panel is also fixedly connected with amplifier, amplifier is supplied to the electric signal amplified the first coil being fixedly connected on panel, first coil turns to annular, and the axes normal of the first coil is in panel, also comprise for close first coil to make the second coil of generation mutual inductance phenomenon, second coil also turns to annular, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, and audio-frequency generator, amplifier is positioned at the back side of panel, first coil is positioned at the front of panel.The utility model structure is simple, probes into helpful to student.
Description
Technical field
The utility model belongs to physical teaching aid field, in particular for the teaching aid of mutual inductance teaching.
Background technology
The existing teaching aid about mutual inductance is very abundant, but, still deficiency is had, such as application number is the 2014206931303(applying date is on November 19th, 2014, and not yet announce, invention and created name is: can the electromagnetic induction teaching aid of sounding) the teaching aid for mutual inductance recorded of patent documentation exist following not enough: 1, if without power amplifier, the electric current of the second coil is difficult to very large, and when numerous students teaching, remote student can't hear sound.2, if having employed power amplifier, because had more this equipment of power amplifier, it is loaded down with trivial details that equipment has become, and student is difficult to understand this circuit, 3, and a complete set of equipment does not have bracing frame, and a people is difficult to demonstration.
Utility model content
In order to make up the deficiency of existing teaching aid, the utility model proposes a kind of demonstrator for mutual inductance teaching, the utility model is such:
A kind of demonstration instrument for mutual inductance teaching, comprise base, be fixedly connected with base, be in the panel of perpendicular, it is characterized in that: panel is fixedly connected with the audio-frequency generator for providing sound signal, panel is also fixedly connected with the amplifier for amplifying sound signal, amplifier is supplied to the electric signal amplified the first coil being fixedly connected on panel, first coil turns to annular, and the axes normal of the first coil is in panel, also comprise for close first coil to make the second coil of generation mutual inductance phenomenon, second coil also turns to annular, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, and audio-frequency generator, amplifier is positioned at the back side of panel, first coil is positioned at the front of panel.
The utility model can also be such:
Can the mutual inductance demonstrator of sounding, comprise base, be fixedly connected with base, be in the panel of perpendicular, it is characterized in that: panel is fixedly connected with the audio-frequency generator for providing sound signal, panel is also fixedly connected with the amplifier for amplifying sound signal, amplifier is supplied to the electric signal amplified the first coil being fixedly connected on panel, first coil turns to annular, and the axes normal of the first coil is in panel, also comprise for close first coil to make the second coil of generation mutual inductance phenomenon, second coil also turns to annular, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, and audio-frequency generator, amplifier is positioned at the back side of panel, first coil is positioned at the front of panel,
Also comprise an iron core, one end of iron core is provided with screw thread, and iron core is perpendicular to panel, and iron core is rewirable connection with the connected mode of panel,
Panel is also provided with: make iron core be provided with the hole of thread end screw-in, and the position in hole is at the axis of the first coil.
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 partial structurtes schematic diagram of the utility model embodiment one.
Fig. 2 is the partial structurtes schematic diagram of the utility model embodiment one.
Fig. 3 is the partial structurtes schematic diagram of the utility model embodiment two.
Fig. 4 is the partial structurtes schematic diagram of the utility model embodiment two.
In figure: 1-first coil, 2-second coil, 3-base, 4-panel, 5-audio-frequency generator, 6-amplifier, 7-loudspeaker, 8-hole, 9-iron core.
Embodiment
Embodiment one
See accompanying drawing 1 and accompanying drawing 2, it is structural representation of the present utility model.
A kind of demonstration instrument for mutual inductance teaching, comprise base 3, be fixedly connected with base 3, be in the panel 4 of perpendicular, it is characterized in that: panel 4 is fixedly connected with the audio-frequency generator 5 for providing sound signal, panel 4 is also fixedly connected with the amplifier 6 for amplifying sound signal, amplifier 6 is supplied to the electric signal amplified the first coil 1 being fixedly connected on panel 4, first coil 1 turns to annular, and the axes normal of the first coil 1 is in panel 4, also comprise for close first coil 1 to make the second coil 2 of generation mutual inductance phenomenon, second coil 2 also turns to annular, second coil 2 is electrically connected with a loudspeaker 7 for electric energy conversion being acoustic energy, and audio-frequency generator 5, amplifier 6 is positioned at the back side of panel 4, first coil 1 is positioned at the front of panel 4.
Using method: audio-frequency generator 5 works, and provides sound signal, sound signal enters amplifier 6, and amplifier 6 inputs to the first coil 1 the electric current amplified, and then, with the second coil 2 near the first coil, loudspeaker 7 can spread out of sound.
Explain: 1, audio-frequency generator can be radio, sound-track engraving apparatus, mp3, mobile phone, square dance player.Those skilled in the art should know, and the sound signal said here is electric signal, but not mechanical wave.2, after having seen this instructions, various equivalent modifications pair: produce sound signal, sound signal is exaggerated, sound signal outputs to the first coil, these three technology do not need creative work just can solve.3, loudspeaker can adopt the loudspeaker of relatively high power.Loudspeaker is also referred to as loudspeaker.4, audio-frequency generator 5, amplifier 6 are positioned at the back side of panel 4, and reason is: do not allow these devices disturb the sight line of student.Student is it is seen that front.
Embodiment two
The utility model can also like this:
See accompanying drawing 3, accompanying drawing 4.
Can the mutual inductance demonstrator of sounding, comprise base 3, be fixedly connected with base 3, be in the panel 4 of perpendicular, it is characterized in that: panel 4 is fixedly connected with the audio-frequency generator 5 for providing sound signal, panel 4 is also fixedly connected with the amplifier 6 for amplifying sound signal, amplifier 6 is supplied to the electric signal amplified the first coil 1 being fixedly connected on panel 4, first coil 1 turns to annular, and the axes normal of the first coil 1 is in panel 4, also comprise for close first coil 1 to make the second coil 2 of generation mutual inductance phenomenon, second coil 2 also turns to annular, second coil 2 is electrically connected with a loudspeaker 7 for electric energy conversion being acoustic energy, and audio-frequency generator 5, amplifier 6 is positioned at the back side of panel 4, first coil 1 is positioned at the front of panel 4, also comprise an iron core 9, one end of iron core 9 is provided with screw thread, iron core 9 is perpendicular to panel 4, iron core 9 is rewirable connection with the connected mode of panel 4,
Panel 4 is also provided with: make iron core 9 be provided with the hole 8 of thread end screw-in, and the position in hole 8 is at the axis of the first coil 1.
Using method: audio-frequency generator 5 works, and provides sound signal, sound signal enters amplifier 6, and amplifier 6 inputs to the first coil 1 the electric current amplified, and then, with the second coil 2 near the first coil, loudspeaker 7 can spread out of sound.Then, iron core 9 is screwed to 8 li, hole, finds that the volume of loudspeaker increases, illustrate that iron core 9 serves effect.Or iron core 9 is installed before, screws down iron core 9 afterwards, find that the volume of loudspeaker has diminished.
Various equivalent modifications should know the first coil, the second coil will have the suitable number of turn.
No matter be embodiment one, or embodiment two, there are these advantages compared to existing technology: 1, student can't see loaded down with trivial details device, be highlighted the device relevant with mutual inductance, 2, amplifier is not connected to the second coil, make this circuit of student's easy to understand, also it should be explained that: amplifier is connected to the second coil, logically, have such problem: loudspeaker sounding is that amplifier causes to have students' union to think, but not the second coil, or having such problem: amplifier is necessary condition to sounding.3, the utility model loudspeaker can adopt powerful loudspeaker, and the sound sent can be caught in whole classroom, good demonstration effect.
The utility model structure is simple, benefits to student's inquiry activity.
Claims (1)
1. the demonstration instrument for mutual inductance teaching, comprise base, be fixedly connected with base, be in the panel of perpendicular, it is characterized in that: panel is fixedly connected with the audio-frequency generator for providing sound signal, panel is also fixedly connected with the amplifier for amplifying sound signal, amplifier is supplied to the electric signal amplified the first coil being fixedly connected on panel, first coil turns to annular, and the axes normal of the first coil is in panel, also comprise for close first coil to make the second coil of generation mutual inductance phenomenon, second coil also turns to annular, second coil is electrically connected with one for being the loudspeaker of acoustic energy electric energy conversion, and audio-frequency generator, amplifier is positioned at the back side of panel, first coil is positioned at the front of panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420700099.1U CN204178609U (en) | 2014-11-20 | 2014-11-20 | A kind of demonstrator for mutual inductance teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420700099.1U CN204178609U (en) | 2014-11-20 | 2014-11-20 | A kind of demonstrator for mutual inductance teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204178609U true CN204178609U (en) | 2015-02-25 |
Family
ID=52567397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420700099.1U Expired - Fee Related CN204178609U (en) | 2014-11-20 | 2014-11-20 | A kind of demonstrator for mutual inductance teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204178609U (en) |
-
2014
- 2014-11-20 CN CN201420700099.1U patent/CN204178609U/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: 20150225 Termination date: 20151120 |
|
| EXPY | Termination of patent right or utility model |