CN203433717U - Device for research of phenomenon of mutual induction - Google Patents
Device for research of phenomenon of mutual induction Download PDFInfo
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- CN203433717U CN203433717U CN201320462445.2U CN201320462445U CN203433717U CN 203433717 U CN203433717 U CN 203433717U CN 201320462445 U CN201320462445 U CN 201320462445U CN 203433717 U CN203433717 U CN 203433717U
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- fixed support
- scale
- magnetic medium
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- 230000006698 induction Effects 0.000 title abstract description 7
- 230000005291 magnetic effect Effects 0.000 claims abstract description 46
- 238000004804 winding Methods 0.000 claims abstract description 45
- 238000002474 experimental method Methods 0.000 abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 2
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to a device for the research of the phenomenon of mutual induction, and belongs to the technical field of experiment teaching instruments. The device comprises a pedestal, a cavity framework, a winding coil I, a winding coil II, a fixed support I, a fixed support II, and a fixed support III. The cavity framework is horizontally supported and fixed on the pedestal through the fixed support I and the fixed support II. The winding coil I and the winding coil II respectively wind the outer surface of the cavity framework uniformly in a close winding manner. End lines of the two winding coils are respectively connected with a binding post on the pedestal. The device is characterized in that the device also comprises a rod-shaped metal magnetic medium, a scale, a connecting support, a scale adjusting screw rod, and a sleeve which connects the adjusting screw rod and the scale; the scale and the rod-shaped metal magnetic medium are connected and fixed through the connecting support; and the sleeve is supported and fixed on pedestal through the fixed support II. The device provided by the utility model can measure the coefficient of mutual induction, and also can observe the changes, caused by the changes of the size of a signal of mutual induction, of the coefficient of mutual induction, wherein the changes of the size of the signal is caused by the changes of the position where the magnetic medium is located in a magnetic field.
Description
Technical field
The utility model relates to a kind of device of studying mutual inductance phenomenon, is mainly used in the college physical experiment teaching of institution of higher learning's science and engineering specialty, belongs to experiment teaching instrument technical field.
Background technology
When the electric current in a coil changes, near another coil it, will produce induction electromotive force, vice versa, and this is called mutual inductance phenomenon.Mutual inductor is comprised of former and deputy coil, passes into exchange current in primary winding, and flux change can produce induction electromotive force in secondary coil, and the transformer that utilizes mutual inductance principle to make is widely used in scientific research.Obviously, the Mutual Inductance Coupling degree of two coils is not only relevant with the curent change speed in coil, also relevant with the structure of mutual inductor itself.An important parameter of mutual inductor is coefficient of mutual inductance, by the relative position between the geometric configuration of coil, size, the number of turn, coil, the character of whether filling magnetic medium and magnetic medium, determined, and with coil in electric current irrelevant.The calculating more complicated of coefficient of mutual inductance, in reality, the normal method of experiment that adopts is measured.At present, in Experiment of College Physics, study the mutual inductor that mutual inductance phenomenon uses relatively simple for structure, special magnetic medium is not set near two coils, experiment measuring process middle school student cannot experience near the impact of the magnetic medium of coil on mutual inductance phenomenon and coefficient of mutual inductance, make them for the degree of coil mutual inductance coupling, also only only limit to theoretic understanding.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of device of studying mutual inductance phenomenon, use this device research mutual inductance phenomenon can not only measure coefficient of mutual inductance, and can make student experience fully near the impact of the filling of coil magnetic medium on mutual inductance phenomenon and coefficient of mutual inductance, strengthen student's practice knowledge and the understanding to knowwhy.
The technical solution of the utility model is: a kind of device of studying mutual inductance phenomenon, comprises base 1, cavity skeleton 2, winding coil I 31, winding coil II 32, fixed support I 41, fixed support II 42, fixed support III 43; Cavity skeleton 2 is fixed on base 1 by fixed support I 41 and fixed support II 42 horizontal supports, winding coil I 31 and winding coil II 32 respectively evenly the close end line around cavity skeleton 2 outside surfaces, two winding coils be connected with the binding post on base 1 respectively; Also comprise bar-shaped metallic magnetic medium 5, scale 6, connection bracket 7, scale adjusting screw(rod) 8 and the sleeve 9 that connects adjusting screw(rod) 8 and scale 6; Scale 6 and bar-shaped metallic magnetic medium 5 are connected and fixed by connection bracket 7, and sleeve 9 is supported and fixed on base 1 by fixed support III 43.
The transversal section of described cavity skeleton 2 is circular.
The horizontal center line of described bar-shaped metallic magnetic medium 5 overlaps with the horizontal center line of described cavity skeleton 2.
The transversal section of described bar-shaped metallic magnetic medium 5 is radius circular, that its radius is less than cavity skeleton 2.
Regulation scale adjusting screw(rod) 8, can see the signal waveform of strengthening in Mutual Inductance Coupling degree situation so that bar-shaped metallic magnetic medium 5 enters cavity skeleton 2 inside, calculates larger coefficient of mutual inductance.
Wherein, regulate the mobile scale 6 that described scale adjusting screw(rod) 8 can level, by the bar-shaped metallic magnetic medium 5 of movement of connection bracket 7 levels, thereby change the distance of bar-shaped metallic magnetic medium 5 and winding coil, change the position of magnetic medium in magnetic field.This bar-shaped metallic magnetic medium can adopt ferromagnetic material to process, and cavity skeleton can adopt pvc pipe or electric bakelite to make, the common thin copper wire for two winding coils that its outside surface covers.This two winding coil can an overlapped part in coiling or be there is no overlapping part at a distance of a segment distance.This device can be made visual, and a transparent cover matching with base can be covered in outside, or directly just adopts openly, is convenient to observation of students.
When using this device research mutual inductance phenomenon and measuring coefficient of mutual inductance, by alternating signal and a resistance
after series connection, be connected with two binding posts of winding coil I 31, two binding posts and a pull-up resistor of winding coil II 32
be connected, with a passage observation resistance of dual trace oscilloscope
on signal, with its another one passage observation resistance
on signal, read the Voltage Peak peak value of oscilloscope display
with
, according to formula
calculate to obtain the coefficient of mutual inductance f frequency that is signal.Regulation scale adjusting screw(rod) 8, the mobile scale 6 of level, by connection bracket 7, move bar-shaped metallic magnetic medium 5, change the distance of bar-shaped metallic magnetic medium 5 and winding coil, change the position of magnetic medium in magnetic field, can observe two shown signal magnitude of passage of oscillograph and change along with moving of scale.By the reading on scale, utilize above-mentioned coefficient of mutual inductance computing formula, can calculate magnetic medium at each corresponding coefficient of mutual inductance in position.
The beneficial effects of the utility model are: in mutual inductor, be provided with special magnetic medium, and this magnetic medium can move in magnetic field, use this device research mutual inductance phenomenon can not only measure coefficient of mutual inductance, and student can observe the variation that the big or small variation that changes the mutual inductance signal of bringing due to the position of magnetic medium in magnetic field causes coefficient of mutual inductance size, make that they are vivid experiences the impact of magnetic medium on Mutual Inductance Coupling degree, strengthen student's practice knowledge and the understanding to knowwhy.Meanwhile, this device adopts visuality to design and unconventional " black box " design, can deepen the understanding to mutual inductance original paper structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit diagram of the utility model research mutual inductance phenomenon;
In figure: 1-base, 2-cavity skeleton, 31-winding coil I, 32-winding coil II, 41-fixed support I, 42-fixed support II, 43-fixed support III, the bar-shaped metallic magnetic medium of 5-, 6-scale, 7-connection bracket, 8-scale adjusting screw(rod), 9-sleeve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1: as shown in Figure 1-2, a kind of device of studying mutual inductance phenomenon, comprises base 1, cavity skeleton 2, winding coil I 31, winding coil II 32, fixed support I 41, fixed support II 42, fixed support III 43; Cavity skeleton 2 is fixed on base 1 by fixed support I 41 and fixed support II 42 horizontal supports, winding coil I 31 and winding coil II 32 respectively evenly the close end line around cavity skeleton 2 outside surfaces, two winding coils be connected with the binding post on base 1 respectively; Also comprise bar-shaped metallic magnetic medium 5, scale 6, connection bracket 7, scale adjusting screw(rod) 8 and the sleeve 9 that connects adjusting screw(rod) 8 and scale 6; Scale 6 and bar-shaped metallic magnetic medium 5 are connected and fixed by connection bracket 7, and sleeve 9 is supported and fixed on base 1 by fixed support III 43.The transversal section of cavity skeleton 2 is circular.The horizontal center line of bar-shaped metallic magnetic medium 5 overlaps with the horizontal center line of described cavity skeleton 2.The transversal section of bar-shaped metallic magnetic medium 5 is radius circular, that its radius is less than cavity skeleton 2.
Embodiment 2: as shown in Figure 1-2, a kind of device of studying mutual inductance phenomenon, comprises base 1, cavity skeleton 2, winding coil I 31, winding coil II 32, fixed support I 41, fixed support II 42, fixed support III 43; Cavity skeleton 2 is fixed on base 1 by fixed support I 41 and fixed support II 42 horizontal supports, winding coil I 31 and winding coil II 32 respectively evenly the close end line around cavity skeleton 2 outside surfaces, two winding coils be connected with the binding post on base 1 respectively; Also comprise bar-shaped metallic magnetic medium 5, scale 6, connection bracket 7, scale adjusting screw(rod) 8 and the sleeve 9 that connects adjusting screw(rod) 8 and scale 6; Scale 6 and bar-shaped metallic magnetic medium 5 are connected and fixed by connection bracket 7, and sleeve 9 is supported and fixed on base 1 by fixed support III 43.The transversal section of cavity skeleton 2 is circular.The horizontal center line of bar-shaped metallic magnetic medium 5 overlaps with the horizontal center line of described cavity skeleton 2.
Embodiment 3: as shown in Figure 1-2, a kind of device of studying mutual inductance phenomenon, comprises base 1, cavity skeleton 2, winding coil I 31, winding coil II 32, fixed support I 41, fixed support II 42, fixed support III 43; Cavity skeleton 2 is fixed on base 1 by fixed support I 41 and fixed support II 42 horizontal supports, winding coil I 31 and winding coil II 32 respectively evenly the close end line around cavity skeleton 2 outside surfaces, two winding coils be connected with the binding post on base 1 respectively; Also comprise bar-shaped metallic magnetic medium 5, scale 6, connection bracket 7, scale adjusting screw(rod) 8 and the sleeve 9 that connects adjusting screw(rod) 8 and scale 6; Scale 6 and bar-shaped metallic magnetic medium 5 are connected and fixed by connection bracket 7, and sleeve 9 is supported and fixed on base 1 by fixed support III 43.The transversal section of cavity skeleton 2 is circular.
Embodiment 4: as shown in Figure 1-2, a kind of device of studying mutual inductance phenomenon, comprises base 1, cavity skeleton 2, winding coil I 31, winding coil II 32, fixed support I 41, fixed support II 42, fixed support III 43; Cavity skeleton 2 is fixed on base 1 by fixed support I 41 and fixed support II 42 horizontal supports, winding coil I 31 and winding coil II 32 respectively evenly the close end line around cavity skeleton 2 outside surfaces, two winding coils be connected with the binding post on base 1 respectively; Also comprise bar-shaped metallic magnetic medium 5, scale 6, connection bracket 7, scale adjusting screw(rod) 8 and the sleeve 9 that connects adjusting screw(rod) 8 and scale 6; Scale 6 and bar-shaped metallic magnetic medium 5 are connected and fixed by connection bracket 7, and sleeve 9 is supported and fixed on base 1 by fixed support III 43.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, make various variations.
Claims (4)
1. study a device for mutual inductance phenomenon, comprise base (1), cavity skeleton (2), winding coil I (31), winding coil II (32), fixed support I (41), fixed support II (42), fixed support III (43); Cavity skeleton (2) is fixed on base (1) by fixed support I (41) and fixed support II (42) horizontal support, and winding coil I (31) is connected with the binding post on base (1) respectively with the respectively even close end line around cavity skeleton (2) outside surface, two winding coils of winding coil II (32); It is characterized in that: also comprise bar-shaped metallic magnetic medium (5), scale (6), connection bracket (7), scale adjusting screw(rod) (8) and the sleeve (9) that connects adjusting screw(rod) (8) and scale (6); Scale (6) and bar-shaped metallic magnetic medium (5) are connected and fixed by connection bracket (7), and sleeve (9) is supported and fixed on base (1) by fixed support III (43).
2. the device of research mutual inductance phenomenon according to claim 1, is characterized in that: the transversal section of described cavity skeleton (2) is for circular.
3. the device of research mutual inductance phenomenon according to claim 2, is characterized in that: the horizontal center line of described bar-shaped metallic magnetic medium (5) overlaps with the horizontal center line of described cavity skeleton (2).
4. according to the device of the research mutual inductance phenomenon described in claim 2 or 3, it is characterized in that: the transversal section of described bar-shaped metallic magnetic medium (5) is radius circular, that its radius is less than cavity skeleton (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462445.2U CN203433717U (en) | 2013-07-31 | 2013-07-31 | Device for research of phenomenon of mutual induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462445.2U CN203433717U (en) | 2013-07-31 | 2013-07-31 | Device for research of phenomenon of mutual induction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433717U true CN203433717U (en) | 2014-02-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320462445.2U Expired - Fee Related CN203433717U (en) | 2013-07-31 | 2013-07-31 | Device for research of phenomenon of mutual induction |
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| CN (1) | CN203433717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710393A (en) * | 2017-01-01 | 2017-05-24 | 重庆科技学院 | Miniature static magnetic field experiment device |
-
2013
- 2013-07-31 CN CN201320462445.2U patent/CN203433717U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710393A (en) * | 2017-01-01 | 2017-05-24 | 重庆科技学院 | Miniature static magnetic field experiment device |
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| 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: 20140212 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |