CN2622796Y - Ampere loop theorem tester - Google Patents
Ampere loop theorem tester Download PDFInfo
- Publication number
- CN2622796Y CN2622796Y CN 03234621 CN03234621U CN2622796Y CN 2622796 Y CN2622796 Y CN 2622796Y CN 03234621 CN03234621 CN 03234621 CN 03234621 U CN03234621 U CN 03234621U CN 2622796 Y CN2622796 Y CN 2622796Y
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- CN
- China
- Prior art keywords
- projection
- milivoltmeter
- experiment instrument
- loop
- coil
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- Expired - Lifetime
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Abstract
An ampere loop theorem experimental equipment is characterized in that the equipment comprises an electrical source loop (1), a detecting loop (2) and a projection milli-voil meter (3). The electrical source loop comprises two or more current-carrying wireframes, the wireframes are parallel connected with the low-voltage end of an electrical source transformer (4), the detecting loop (2) is made up of enamel insulated wires on a tube of a non-magnetism material, the two ends of the detecting loop are connected with the projection milli-voil meter (3) by shielded wires, the earthing end of the projection milli-voil meter is connected with the surface of the shielded wires. Experiment result shows that the line integral (circulation value) of the magnetic induction intensity H which along any close curve L is proportional to the algebra summation of the electric current surrounded by the close curve, the ampere loop theorem is proved for the first time. The experimental equipment particularly caters for various opening experiment of electromagnetism and electrotechnician which can be showed to a large class of 200 students and have an excellent intuitionistic effect.
Description
One, technical field
The utility model relates to a kind of experimental apparatus of verifying Amp, belongs to the instruments used for education field that electromagnetics, electrotechnics are used.
Two, background technology
Amp is to set forth the circulation in magnetic field and the theorem of the quantitative relationship of the conduction current algebraic sum of being surrounded, and according to the requirement of syllabus, this theorem is the important content of Theory of Electromagnetic Field, and the student must grasp.But in decades, the mathematical method indirect proof is all used in the teaching of this respect checking.Consider from physics, ought to directly prove with experiment, but the domestic and international so far experimental apparatus that still lacks this respect.Therefore, the conceptual abstraction difficulty is said, the student is difficult for understanding and grasp.We are inspired from the 149th page of exercise 15 of electromagnetics teaching material (Zhao Kaihua, Chen Ximou: People's Education Publishing House, 1978), count reference with the magnetic potential in the exercise 15, have designed this Amp experiment instrument based on detecting coil.
Three, summary of the invention
The purpose of this utility model is to provide a kind of Amp experiment instrument at the deficiencies in the prior art, and it has the experimental apparatus of the measurement magnetic field circulation that function is complete, cost is low.
The purpose of this utility model is realized by following technical measures.
The Amp experiment instrument contains power coil, detecting coil and projection milivoltmeter.Power coil comprises two or more current-carrying wire frames compositions, wire frame is connected in parallel on the low pressure end of power transformer, detecting coil is made up of close enameled wire on the flexible pipe of non-magnetic material, the two ends of detecting coil are connected with the projection milivoltmeter with shielding line, and the earth terminal of projection milivoltmeter is connected with the shielding line crust.
In order to realize goal of the invention better, the utility model is also taked following technical measures:
1, power coil is shape a plurality of wire frame As, the B identical with size ... form, around the enameled wire of the identical number of turn, the wire frame material is that timber or plastics are made in the wire frame.
2, detecting coil is that torus is turned round to terminal axle (flexible pipe) through torus and got back to the same number of turn in top on the flexible pipe of nonmagnetic substance, and the nonmagnetic substance flexible pipe can surround the close-shaped of any form, and flexible pipe is that plastics or proofed sleeve are made.
3, the projection milivoltmeter is converted by the miniature milivoltmeter of transistor, comprises projection arrangement, and its base plate, cover plate and index dial all can be made of transparent plastic, and pointer is made of tinsel.
The utlity model has following advantage:
1, experimental result shows, magnetic induction density H is directly proportional along the algebraic sum of the electric current that the line integral (circulation value) of any closed curve L and this closed curve are surrounded.Amp be experimental results show that for the first time.
2, power coil of the present utility model, detecting coil and projection milivoltmeter are relatively independent, are convenient to the student and take and assemble use apart.
3, be specially adapted to electromagnetics and electrotechnical all kinds of opening experiment usefulness, can demonstrate on class for the 200 student top classes in a kindergarten, intuitively respond well.
Four, description of drawings
Fig. 1 is an Amp experiment instrument structural representation.
1 power coil, 2 detecting coils, 3 projection milivoltmeters, 4 transformers.
Five, embodiment
Below by embodiment the utility model is specifically described, can not be interpreted as restriction the utility model protection domain.
Embodiment
The utlity model has simple in structure, easily manufactured, as shown in Figure 1.It is made up of power coil 1, detecting coil 2 and projection milivoltmeter 3.Power coil 1 is made up of two or more current-carrying wire frames, wire frame is connected in parallel on the low pressure end of power transformer 4, detecting coil 2 is made up of close enameled wire on the flexible pipe of non-magnetic material, the two ends of detecting coil are connected with projection milivoltmeter 3 with shielding line, and the earth terminal of projection milivoltmeter is connected with the shielding line crust.Power coil 1 is made up of two wooden rectangular wire frame of A, B.The enameled wire of using 0.67 millimeter of diameter in the wire frame is respectively around 45 circles, and two wire frames also are connected in step-down side, use the 6v AC-powered.The enameled wire that detecting coil 2 usefulness diameters are 0.31 millimeter is close back and forth around each 1000 circle on long 0.80 meter hollow flexible glue leather hose, hose is surrounded close-shapedly after coil winds again, and makes it entangle any frame that is loaded with alternating-current power supply coil A or B.Because the variation of the magnetic flux of the torus self on the hose also responds, so we allow the end of torus turn round through the axle (hose) of torus to get back to the top same number of turn 1000 circles, just can eliminate the caused error of this reaction during coiling.Projection milivoltmeter 3 is converted by the miniature milivoltmeter of transistor, comprises projection arrangement, and its base plate, cover plate and index dial all can be made of transparent plastic, and pointer is made of tinsel, makes the projection amplification effect better.
Claims (6)
1, Amp experiment instrument, it is characterized in that this experiment instrument contains power coil (1), detecting coil (2) and projection milivoltmeter (3), power coil is made up of two or more current-carrying wire frames, wire frame is connected in parallel on the low pressure end of power transformer (4), detecting coil (2) is made up of close enameled wire on the flexible pipe of non-magnetic material, the two ends of detecting coil are connected with projection milivoltmeter (3) with shielding line, and the earth terminal of projection milivoltmeter is connected with the shielding line crust.
2,, it is characterized in that power coil (1) is shape a plurality of wire frame As, the B identical with size according to the described Amp experiment instrument of claim 1 ... form the interior enameled wire of wire frame around the identical number of turn.
3,, it is characterized in that the wire frame material is timber or plastics according to the described Amp experiment instrument of claim 1.
4, according to the described Amp experiment instrument of claim 1, it is characterized in that detecting coil (2) is that torus is turned round to terminal axle through torus and got back to the same number of turn in top on the flexible pipe of nonmagnetic substance, the nonmagnetic substance flexible pipe can surround the close-shaped of any form.
5,, it is characterized in that the nonmagnetic substance flexible pipe is plastics or rubber hose according to the described Amp experiment instrument of claim 1.
6, according to the described Amp experiment instrument of claim 1, it is characterized in that projection milivoltmeter (3) is converted by the miniature milivoltmeter of transistor, comprise projection arrangement, its base plate, cover plate and index dial all can be made of transparent plastic, and pointer is made of tinsel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03234621 CN2622796Y (en) | 2003-05-29 | 2003-05-29 | Ampere loop theorem tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03234621 CN2622796Y (en) | 2003-05-29 | 2003-05-29 | Ampere loop theorem tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622796Y true CN2622796Y (en) | 2004-06-30 |
Family
ID=34249312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03234621 Expired - Lifetime CN2622796Y (en) | 2003-05-29 | 2003-05-29 | Ampere loop theorem tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622796Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310690A (en) * | 2013-07-10 | 2013-09-18 | 河南工业职业技术学院 | Experimental device for Ampere circuital theorem |
-
2003
- 2003-05-29 CN CN 03234621 patent/CN2622796Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310690A (en) * | 2013-07-10 | 2013-09-18 | 河南工业职业技术学院 | Experimental device for Ampere circuital theorem |
| CN103310690B (en) * | 2013-07-10 | 2016-06-22 | 河南工业职业技术学院 | Experimental device for Ampere circuital theorem |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |