CN104064086A - Moving-magnet-type loudspeaker for teaching - Google Patents
Moving-magnet-type loudspeaker for teaching Download PDFInfo
- Publication number
- CN104064086A CN104064086A CN201410287723.4A CN201410287723A CN104064086A CN 104064086 A CN104064086 A CN 104064086A CN 201410287723 A CN201410287723 A CN 201410287723A CN 104064086 A CN104064086 A CN 104064086A
- Authority
- CN
- China
- Prior art keywords
- coil
- support
- strong magnet
- moving
- loudspeaker
- 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.)
- Pending
Links
Landscapes
- Hard Magnetic Materials (AREA)
Abstract
The invention discloses a moving-magnet-type loudspeaker for teaching. The loudspeaker comprises a base, a paper cup, a strong magnet, a coil, a support, an audio line and a computer, wherein the bottom of the paper cup is fixedly arranged on the support; the strong magnet is fixedly arranged at the center of the bottom of the paper cup; the support is fixedly provided with the coil; and the coil is connected with the computer through the audio line. The raw material of the loudspeaker is easy to get, the raw material being the material seen everywhere in daily life; the loudspeaker is simple in structure and convenient to operate; the electromagnetic induction phenomenon, the Lenz's law and the energy transfer are demonstrated vividly and interestingly in the demonstration process; the teaching process is allowed to be full of fun; and the interest of students is effectively motivated, and the electromagnetic theories can be grasped by the students easily.
Description
Technical field
The present invention relates to a kind of teaching aid, particularly a kind of moving-magnetic type loudspeaker.
Background technology
Physics be one taking natural things, phenomenon, rule as probing into the basic subject of object, experiment is indispensable important step in teaching process, use appropriate experiment teaching aid, can cultivate student's observation ability, operating ability, be conducive to again the raising of the abilities such as their analysis, thinking, more easily provide the chance of probing into innovation to student.Concerning begining to learn the middle school student of physics, as long as excited the interest of their study, they will be with the enthusiasm of having one's bosom filled with, and puts in Physics Learning positively, and it is open, active that Physics Classroom will become, lively atmosphere, and teaching efficiency can double naturally.Because Self-made Realia material therefor is many from student at one's side, a lot of old and useless articles can become the starting material of Self-made Realia, so be easy to the imitated amazing physics phenomena and successfully making that present in Self-made Realia of facts have proved by student, can naturally cause student's keen interest, excite their psychology of probing into.Once and experiment to some extent results, to some extent innovation, advance to some extent, will make interest more stable, will continue explore, continue to climb, thereby like physics, take a keen interest in science.In Physics Course standard, point out: advocate the article that use at one's side and carry out Physical Experiment.Use easily available article at one's side to carry out inquiry activity and various Physical Experiment, the distance of the physics that can further and life, allows student profoundly experience the authenticity of science, experiences the relation of science and daily life.
Middle School Physics has two important electromagnetics knowledge points, Maxwell's electromagnetic theory: (1) not only electric charge can produce electric field, and the magnetic field of variation also can produce electric field; (2) not only electric current can produce magnetic field, and the electric field of variation also can produce magnetic field.Lenz law: faradic magnetic field always will hinder the variation that causes faradic magnetic flux.For middle school student, because electricity is not the entity that can touch with magnetic, it is too abstract that knowledge point seems, how to explain demonstration to student, always is emphasis and difficult point in teaching.The transfer problem of energy runs through the study of whole high school physics, is a key content of Middle School Physics.
Summary of the invention
The object of the present invention is to provide one simple in structure, make material simple and easy, the moving-magnetic type loudspeaker teaching aid of demonstrative process vivid and interesting.
For achieving the above object, this is for the moving-magnetic type loudspeaker of teaching aid, it is characterized in that: comprise base, dixie cup, strong magnet, coil, support, tone frequency channel wire and computing machine, support is fixed in the bottom of described dixie cup, described strong magnet is fixed on the bottom centre of dixie cup, support is also fixed with coil, and described coil is connected with computing machine by tone frequency channel wire.
Described support is installed on base.
Described strong magnet is relative with described coil position, the 1-2cm of being separated by.
Substantive distinguishing features of the present invention and progress are:
The application's the moving-magnetic type loudspeaker for teaching aid, starting material are simple and easy, it is all the material being seen everywhere in daily life, simple in structure, easy and simple to handle, in presentation process, image has represented the conversion of electromagnetic induction phenomenon, Lenz law and energy enjoyably, makes to be full of in teaching process enjoyment, effectively stimulating students ' interests, is easy to grasp electromagnetic theory.
Brief description of the drawings
Fig. 1 is main TV structure simplified schematic diagram of the present invention.
Component serial number and title in figure:
Base 1, dixie cup 2, strong magnet 3, coil 4, support 5, tone frequency channel wire 6, computing machine 7.
Embodiment
Below in conjunction with accompanying drawing, enforcement structure of the present invention is described.
Shown in Fig. 1, this moving-magnetic type loudspeaker, comprise base 1, dixie cup 2, strong magnet 3, coil 4, support 5, tone frequency channel wire 6 and computing machine 7, support 5 is fixed in the bottom of dixie cup 2, and strong magnet 3 is fixed on the bottom centre of dixie cup 2, and support 5 is also fixed with coil 4, coil 4 is connected with computing machine 7 by tone frequency channel wire 6, strong magnet 3 is relative with coil 4 positions, the 1-2cm of being separated by, and support 5 is installed on base 1.
Below in conjunction with accompanying drawing and embodiment, this principle of work for the moving-magnetic type loudspeaker of teaching aid is described:
Embodiment 1
Player function: the tone frequency channel wire of this teaching aid 6 is connected to computing machine 7 or MP3 etc. and there is the instrument of playing musical sound function, open music, the music of exporting due to computing machine 7 is a kind of electric current, and be the electric current changing, when the electric current changing passes through tone frequency channel wire 6 through coil 4, according to Maxwell's electromagnetic theory, " not only electric current can produce magnetic field, the electric field changing also can produce magnetic field ", the magnetic field that will change around coil 4, coil 4 and close together relative with strong magnet 3 positions, so magnetic field interaction with strong magnet 3, cause the vibration of strong magnet 3, because strong magnet 3 and dixie cup 2 are fixed together, so also and then vibration and dixie cup 2 can amplify vibration dixie cup 2, there is vibration and can produce sound, get final product the music that uppick spreads out of from dixie cup 2.
Embodiment 2
Sound-recording function: the tone frequency channel wire of this teaching aid 6 is connected to computing machine 7 or MP3 etc. and has the instrument of sound-recording function, open sound-recording function, then speak facing to dixie cup 2, can start to record.The vibration of sound causes the vibration of dixie cup 2, drive thus the strong magnet 3 that is fixed on dixie cup 2 bottoms to vibrate, by Lenz law " faradic magnetic field always will hinder the variation that causes faradic magnetic flux ", vibrate for hindering strong magnet 3, the electric current that will change with the close coil 4 of strong magnet 3, the frequency of curent change is the same with the frequency of sound, and computing machine 7 can get off sound recording by tone frequency channel wire 6.
Embodiment 3
In the time carrying out player function, the music that computing machine 7 is exported is a kind of electric current, i.e. electric energy; The magnetic field that electric current changes while passing through coil 4 by tone frequency channel wire 6, with the magnetic field interaction of strong magnet 3, causes the vibration of strong magnet 3, and vibration is mechanical energy, and whole process is to be converted to mechanical energy by electric energy.
In the time carrying out sound-recording function, the vibration of sound is mechanical energy; The vibration of sound causes the vibration of the strong magnet 3 of dixie cup 2 and dixie cup 2 bottoms, the electric current that coil 4 changes thus, the frequency of curent change is the same with the frequency of sound, computing machine 7 can get off sound recording by tone frequency channel wire 6, the electric current of this variation is electric energy, and whole process is to be converted to electric energy by mechanical energy.
Claims (3)
1. the moving-magnetic type loudspeaker for teaching aid, it is characterized in that: comprise base (1), dixie cup (2), strong magnet (3), coil (4), support (5), tone frequency channel wire (6) and computing machine (7), support (5) is fixed in the bottom of described dixie cup (2), the bottom centre that described strong magnet (3) is fixed on dixie cup (2), support (5) is also fixed with coil (4), and described coil (4) is connected with computing machine (7) by tone frequency channel wire (6).
2. the moving-magnetic type loudspeaker for teaching aid according to claim 1, is characterized in that: described support (5) is installed on base (1).
3. the moving-magnetic type loudspeaker for teaching aid according to claim 1, is characterized in that: described strong magnet (3) is relative with described coil (4) position, the 1-2cm of being separated by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287723.4A CN104064086A (en) | 2014-06-25 | 2014-06-25 | Moving-magnet-type loudspeaker for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287723.4A CN104064086A (en) | 2014-06-25 | 2014-06-25 | Moving-magnet-type loudspeaker for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104064086A true CN104064086A (en) | 2014-09-24 |
Family
ID=51551770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410287723.4A Pending CN104064086A (en) | 2014-06-25 | 2014-06-25 | Moving-magnet-type loudspeaker for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104064086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530916A (en) * | 2016-11-16 | 2017-03-22 | 商洛学院 | Magnetoelectric conversion device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388992A (en) * | 1991-06-19 | 1995-02-14 | Audiological Engineering Corporation | Method and apparatus for tactile transduction of acoustic signals from television receivers |
| RU2063065C1 (en) * | 1993-09-08 | 1996-06-27 | Валерий Вильгельмович Майер | Aid in mechanics |
| CN2268966Y (en) * | 1996-06-11 | 1997-11-26 | 殷洪波 | Acoustic resonation experiment device sensed by electromagnet effect |
| CN1330351A (en) * | 2000-06-15 | 2002-01-09 | 李恒春 | Multifunctional experiment demonstrator set |
| JP2005321517A (en) * | 2004-05-07 | 2005-11-17 | Mika Fukumori | Braille learning device |
| CN200947305Y (en) * | 2005-12-06 | 2007-09-12 | 大连理工大学 | Kinetic energy-electric energy conversion demonstrating instrument |
| CN201725466U (en) * | 2009-10-21 | 2011-01-26 | 郭茂清 | Universal electromagnetic presentation box |
| CN201897895U (en) * | 2010-12-02 | 2011-07-13 | 张培阮 | Moving coil type loudspeaker principle demonstration board |
| CN203941644U (en) * | 2014-06-25 | 2014-11-12 | 南宁市第二中学 | A kind of moving-magnetic type loudspeaker for teaching aid |
-
2014
- 2014-06-25 CN CN201410287723.4A patent/CN104064086A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388992A (en) * | 1991-06-19 | 1995-02-14 | Audiological Engineering Corporation | Method and apparatus for tactile transduction of acoustic signals from television receivers |
| RU2063065C1 (en) * | 1993-09-08 | 1996-06-27 | Валерий Вильгельмович Майер | Aid in mechanics |
| CN2268966Y (en) * | 1996-06-11 | 1997-11-26 | 殷洪波 | Acoustic resonation experiment device sensed by electromagnet effect |
| CN1330351A (en) * | 2000-06-15 | 2002-01-09 | 李恒春 | Multifunctional experiment demonstrator set |
| JP2005321517A (en) * | 2004-05-07 | 2005-11-17 | Mika Fukumori | Braille learning device |
| CN200947305Y (en) * | 2005-12-06 | 2007-09-12 | 大连理工大学 | Kinetic energy-electric energy conversion demonstrating instrument |
| CN201725466U (en) * | 2009-10-21 | 2011-01-26 | 郭茂清 | Universal electromagnetic presentation box |
| CN201897895U (en) * | 2010-12-02 | 2011-07-13 | 张培阮 | Moving coil type loudspeaker principle demonstration board |
| CN203941644U (en) * | 2014-06-25 | 2014-11-12 | 南宁市第二中学 | A kind of moving-magnetic type loudspeaker for teaching aid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530916A (en) * | 2016-11-16 | 2017-03-22 | 商洛学院 | Magnetoelectric conversion device |
| CN106530916B (en) * | 2016-11-16 | 2023-10-20 | 商洛学院 | Magneto-electric conversion device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204066452U (en) | A kind of Chinese literature auxiliary teaching device | |
| CN206003368U (en) | A kind of music teaching music score demonstration board | |
| CN203941644U (en) | A kind of moving-magnetic type loudspeaker for teaching aid | |
| CN104064086A (en) | Moving-magnet-type loudspeaker for teaching | |
| CN203910127U (en) | Electromagnetic wave demonstration teaching tool | |
| CN201207235Y (en) | Sound wave resonance demonstration instrument | |
| CN201449683U (en) | A vibrating sound generating demonstrator | |
| CN104064084A (en) | Electromagnetic wave demonstration teaching aid | |
| CN203689727U (en) | Music teaching instrument | |
| CN204732031U (en) | A kind of novel senior middle school physics teaching instrument | |
| CN202736337U (en) | Intelligent music demonstration plate with permanent magnets | |
| CN203631004U (en) | Music teaching device | |
| CN203631005U (en) | Middle and primary school music teaching plate | |
| CN104537919B (en) | A kind of modularity musical sound teaching system transmitted based on distributed wireless | |
| CN203465880U (en) | Electric chime demonstration teaching aid | |
| CN203849910U (en) | Auxiliary teaching aid for learning standing waves | |
| CN208173078U (en) | A kind of raw electric sounding musical instrument electromagnetic induction demonstration instrument of magnetic for physics experiment teaching | |
| CN202205369U (en) | Magnetic force induction touch-free musical instrument teaching tool | |
| CN206489804U (en) | Electromagnet apparatus for demonstrating and electromagnet demonstration instrument | |
| CN219418319U (en) | Multifunctional demonstration box for sound magnetic experiment | |
| CN208521504U (en) | A kind of electromagnetic induction demonstration instrument | |
| CN201974977U (en) | Resonance test demonstrating teaching aid | |
| CN202534198U (en) | Staff magnetic note | |
| CN203276715U (en) | Map used for geographical teaching | |
| CN201877001U (en) | Interesting rotary table for Chinese learning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140924 |
|
| WD01 | Invention patent application deemed withdrawn after publication |