CN206340244U - A kind of faraday electromagnetic induction probes into apparatus for demonstrating - Google Patents
A kind of faraday electromagnetic induction probes into apparatus for demonstrating Download PDFInfo
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- CN206340244U CN206340244U CN201621328222.7U CN201621328222U CN206340244U CN 206340244 U CN206340244 U CN 206340244U CN 201621328222 U CN201621328222 U CN 201621328222U CN 206340244 U CN206340244 U CN 206340244U
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Abstract
Apparatus for demonstrating is probed into the utility model discloses a kind of faraday electromagnetic induction, including：Demonstration board, at least one set of demonstration tackling on demonstration board, demonstrating tackling includes at least one magnet, the developmental tube on demonstration board, the coil being looped around on developmental tube and the measuring instrumentss connected with coil, through hole of the inside of developmental tube provided with insertion to its two ends, the size of magnet is less than the diameter of through hole.The utility model use it is visual in image, be convenient for related experiment teaching popularization and popularization.
Description
Technical field
The utility model is related to teaching aid technical field, more particularly to a kind of faraday electromagnetic induction probes into demonstration dress
Put.
Background technology
Because magnetic flux change produces the phenomenon of induced electromotive force, a part of conductor of closed circuit does cutting magnetic in magnetic field
When changing when feeling the motion of line or by the magnetic flux of closed circuit, electric current will be produced in conductor, this phenomenon is electricity
Magnetic induction phenomenon, the size of induced electromotive force is determined that the direction of electromotive force is carried by Lenz's law by Faraday's electromagnetic induction law
For.Faraday's electromagnetic induction law is an important content of high school physicses, while being also a teaching difficulty, school generally matches somebody with somebody
Have experiment equipment to be demonstrated, in order to which student understands.Existing experiment equipment uses the simple combination of coil and bar magnet,
The variation relation of faradic direction and magnetic flux lacks intuitive, and the size shortage of induced electromotive force is quantitative to probe into, real
Test that equipment is scattered, the experiment tackling without seriation.
Utility model content
In order to solve the above technical problems, probing into apparatus for demonstrating the utility model proposes a kind of faraday electromagnetic induction, this is drilled
Showing device use it is visual in image, can quantitatively be probed into, easy to operate, pedagogical strong, and its low cost simple in construction, just
In the popularization and popularization that carry out related experiment teaching.
The technical solution adopted in the utility model is to design a kind of faraday electromagnetic induction to probe into apparatus for demonstrating, including：Drill
Show plate, at least one set of demonstration tackling on demonstration board, demonstration tackling includes at least one magnet, on demonstration board
Developmental tube, the coil being looped around on developmental tube and the measuring instrumentss connected with coil, the inside of developmental tube provided with insertion to its two
The through hole at end, the size of magnet is less than the diameter of through hole.
It is preferred that, demonstration tackling also includes：Measurement is connected in parallel to after light-emitting component and amplifier, light emitting elements in series amplifier
The two ends of instrument.
It is preferred that, demonstration tackling also includes：Voltage sensor is connected in parallel with measuring instrumentss.
It is preferred that, demonstration tackling also includes：It is used for the Sand Bucket for accepting magnet below developmental tube.
It is preferred that, demonstration tackling also includes：Postive stop baffle at the top of developmental tube, the top of developmental tube is provided with and can accommodated
The breach of postive stop baffle activity plug, postive stop baffle is inserted in the breach, and magnet is placed on postive stop baffle.
It is preferred that, demonstration board is provided with two groups or so the demonstration tacklings put side by side, the postive stop baffle of two groups of demonstration tacklings
Link into an integrated entity.
In one embodiment, in two groups of demonstration tacklings coil turn is different.
In another embodiment, arranged on the developmental tube in two groups of demonstration tacklings circular hole, the experiment in a demonstration tackling
Manage as nonmagnetic metal pipeline, the developmental tube in another demonstration tackling is nonmetal pipeline.
Compared with prior art, the assembling of the equipment such as developmental tube, coil, magnet and measuring instrumentss is integrated into by the utility model
Demonstrate tackling to be arranged on demonstration board, single demonstration tackling or two demonstration tacklings can be flexibly set during field research, carry out stupefied
The checking demonstration such as secondary law, Faraday's electromagnetic induction law and electromagnetic damping effect, with larger Teaching Advantages.
Brief description of the drawings
The utility model is described in detail with reference to embodiment and accompanying drawing, wherein：
Fig. 1 is the structural representation of the utility model first embodiment；
Fig. 2 is the structural representation of the utility model second embodiment；
Fig. 3 is the structural representation of the utility model 3rd embodiment.
Embodiment
As shown in Figures 1 to 3, the utility model proposes faraday electromagnetic induction probe into apparatus for demonstrating, including：Demonstration board 1
With at least one set of demonstration tackling on demonstration board 1.
As shown in Figure 1, 2, demonstration tackling includes：Magnet 2, developmental tube 3, coil 4 and measuring instrumentss 5, developmental tube 3 pass through card
Pin is removably mounted on demonstration board 1, and the inside of developmental tube 3 is coaxially provided with through hole, and the size of magnet 2 is less than the diameter of through hole,
Coil 4 is looped around on the outer wall of developmental tube 3, and measuring instrumentss 5 and the two ends of coil 4 are connected in series, and can be voltmeter or ammeter.
Magnet 2 is discharged on the top of developmental tube 3 when using, magnet 2 is along the slide downward of developmental tube 3, and coil 4 is interior to produce induction electric
Gesture and induced-current, detect the size of induced electromotive force using measuring instrumentss 5 and indicate faradic direction, developmental tube 3
Lower section is provided with Sand Bucket 6, and magnet is fallen into after being tumbled from developmental tube 3 in Sand Bucket 6.
As shown in figure 1, light-emitting component can also be set in order to more intuitively show in faradic direction, demonstration tackling
7 and amplifier 8, the two ends of measuring instrumentss 5 are connected in parallel to after the cascade amplifier 8 of light-emitting component 7, the luminous shape of light-emitting component 7 is utilized
State indicates the size in faradic direction and induced electromotive force.As shown in Fig. 2 in demonstration tackling voltage can also be set to pass
Sensor 9, voltage sensor 9 is in parallel with measuring instrumentss 5, utilizes the detection voltage of voltage sensor 9 or electric current and conversion digital signal
To indicate the size of induced electromotive force.
Preferably, as shown in Figures 1 to 3, carry out being additionally provided with postive stop baffle 10 in quantitative study, demonstration tackling for convenience,
The top of developmental tube 3, which is provided with, can accommodate the breach of the activity plug of postive stop baffle 10, and postive stop baffle 10 is inserted in the breach.When using
First magnet 2 is placed on postive stop baffle 10, the static release of magnet 2 after postive stop baffle 10 is taken out, the setting of postive stop baffle 10 can
To ensure that testing magnet 2 every time is maintained at sustained height.When demonstration board 1 is provided with two groups or so the demonstration tacklings put side by side
When, the postive stop baffle 10 of two groups of demonstration tacklings links into an integrated entity, and can so ensure that the magnet 2 in two groups of demonstration tacklings is located at same
One height, the magnet 2 when extracting postive stop baffle 10 out in two groups of demonstration tacklings drops simultaneously, and contrast effect is intuitively accurate, subtracts significantly
Few experimental error.
Several embodiments are carried out the following is the utility model：
As shown in figure 1, first embodiment is to carry out probing into for Lenz's law, there is measuring instrumentss 5 and hair in demonstration tackling
Optical element 7, using one group of demonstration tackling on demonstration board 1, first step release magnet 2 simultaneously makes the N poles of magnet be transported towards coil 4
It is dynamic, faradic direction is shown by the beat of pointer of measuring instrumentss 5 and the on off state of light-emitting component 7, induced electricity is analyzed
Flow the relation of direction and magnetic flux change；The S poles that second step discharges magnet 2 and makes magnet pass through measuring instrument towards coil movement
The beat of pointer of table 5 and the on off state of light-emitting component 7 show faradic direction, analyze now inductive current direction and magnetic
The relation of variations of flux, verifies Lenz's law.
Second embodiment is to carry out the research of Faraday's electromagnetic induction law, includes qualitative research and quantitative study.Such as Fig. 1
It is shown, in qualitative research, there is measuring instrumentss 5 and light-emitting component 7 in demonstration tackling, one group of demonstration on demonstration board 1 is used
Tackling, by magnet 2 from the static release in the top of developmental tube 3, developmental tube 3 can according to phenomenon whether substantially the need for take vertical or incline
Oblique pattern, developmental tube 3 uses nonmetal pipeline, and magnet 2 passes through the coil 4 on developmental tube 3.The variable is controlled to be in the qualitative research
The height that the number of turn of coil 4, the number of magnet 2, magnet 2 discharge, numerical value and light-emitting component 7 are pointed to by the pointers of measuring instrumentss 5
Brightness judges the induced electromotive force size produced.
As shown in Fig. 2 in quantitative study, using two groups of demonstration tacklings on demonstration board 1, the line in two groups of demonstration tacklings
Enclose 4 numbers of turn different, two magnet 2 are individually positioned on the two ends of postive stop baffle 10 by the first step, take out postive stop baffle 10 and allow magnetic
Iron 2 is passed through the different developmental tube 3 of the number of turn of coil 4, record coil 4 number of turn difference respectively from the static release of same height
For n1, n2 corresponding pulse voltage maximum of measuring instrumentss 5；Magnet 2 is placed on one of which demonstration tackling by second step
On postive stop baffle 10, the static release of magnet 2 after postive stop baffle 10 is taken out, successively from identical highly static release 1,2 magnet,
Be passed through same developmental tube 3, record correspondence 1 and 2 magnet by when the corresponding pulse voltage maximum of measuring instrumentss 5；
3rd draws E=n △ φ/△ t to multiple data summarization.
As shown in figure 3,3rd embodiment is to carry out probing into for electromagnetic damping effect, two groups of demonstrations on demonstration board 1 are used
Arranged on developmental tube 3 in tackling, two groups of demonstration tacklings circular hole, the developmental tube in a demonstration tackling is nonmagnetic metal pipe
Developmental tube in road, another demonstration tackling is nonmetal pipeline, and two magnet 2 are individually positioned in the two ends of postive stop baffle 10
On, take out postive stop baffle 10 and allow magnet 2 from the static release of same height, be passed through nonmagnetic metal pipeline and non-metallic pipe
Road, the time length that record magnet 2 is passed through judges damping.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of faraday electromagnetic induction probes into apparatus for demonstrating, including：Demonstration board, at least one set on the demonstration board are drilled
Show tackling, it is characterised in that the demonstration tackling includes at least one magnet, the developmental tube on the demonstration board, ring
The coil being wound on the developmental tube and the measuring instrumentss connected with the coil, the inside of the developmental tube are provided with insertion extremely
The through hole at its two ends, the size of the magnet is less than the diameter of through hole.
2. faraday electromagnetic induction as claimed in claim 1 probes into apparatus for demonstrating, it is characterised in that the demonstration tackling is also wrapped
Include：The two ends of the measuring instrumentss are connected in parallel to after light-emitting component and amplifier, amplifier described in the light emitting elements in series.
3. faraday electromagnetic induction as claimed in claim 1 probes into apparatus for demonstrating, it is characterised in that the demonstration tackling is also wrapped
Include：Voltage sensor is connected in parallel with the measuring instrumentss.
4. faraday electromagnetic induction as claimed in claim 1 probes into apparatus for demonstrating, it is characterised in that the demonstration tackling is also wrapped
Include：It is used for the Sand Bucket for accepting magnet below the developmental tube.
5. the faraday electromagnetic induction as described in any one of Claims 1-4 probes into apparatus for demonstrating, it is characterised in that described to drill
Show that tackling also includes：Postive stop baffle at the top of the developmental tube, the top of the developmental tube is described spacing provided with that can accommodate
The breach of baffle plate activity plug, the postive stop baffle is inserted in the breach, and the magnet is placed on the postive stop baffle.
6. faraday electromagnetic induction as claimed in claim 5 probes into apparatus for demonstrating, it is characterised in that the demonstration board is provided with
Two groups or so the demonstration tacklings put side by side, the postive stop baffle of two groups of demonstration tacklings links into an integrated entity.
7. faraday electromagnetic induction as claimed in claim 6 probes into apparatus for demonstrating, it is characterised in that two groups of demonstration tacklings
Interior coil turn is different.
8. faraday electromagnetic induction as claimed in claim 6 probes into apparatus for demonstrating, it is characterised in that two groups of demonstration tacklings
Arranged on interior developmental tube circular hole, the developmental tube in a demonstration tackling is in nonmagnetic metal pipeline, another demonstration tackling
Developmental tube is nonmetal pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328222.7U CN206340244U (en) | 2016-12-06 | 2016-12-06 | A kind of faraday electromagnetic induction probes into apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328222.7U CN206340244U (en) | 2016-12-06 | 2016-12-06 | A kind of faraday electromagnetic induction probes into apparatus for demonstrating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206340244U true CN206340244U (en) | 2017-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621328222.7U Active CN206340244U (en) | 2016-12-06 | 2016-12-06 | A kind of faraday electromagnetic induction probes into apparatus for demonstrating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107705683A (en) * | 2017-11-13 | 2018-02-16 | 山西大学 | A kind of electromagnetic damping phenomenon demonstration instrument |
| CN108961959A (en) * | 2018-07-03 | 2018-12-07 | 陕西师范大学 | A kind of multi-functional Lenz's law experimental provision |
-
2016
- 2016-12-06 CN CN201621328222.7U patent/CN206340244U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107705683A (en) * | 2017-11-13 | 2018-02-16 | 山西大学 | A kind of electromagnetic damping phenomenon demonstration instrument |
| CN108961959A (en) * | 2018-07-03 | 2018-12-07 | 陕西师范大学 | A kind of multi-functional Lenz's law experimental provision |
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