CN103310690B - Experimental device for Ampere circuital theorem - Google Patents
Experimental device for Ampere circuital theorem Download PDFInfo
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- CN103310690B CN103310690B CN201310287175.0A CN201310287175A CN103310690B CN 103310690 B CN103310690 B CN 103310690B CN 201310287175 A CN201310287175 A CN 201310287175A CN 103310690 B CN103310690 B CN 103310690B
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Abstract
A kind of experimental device for Ampere circuital theorem, it includes at least one current-carrying wire frame, search coil, millivoltmeter and power supply。At least one current-carrying wire frame described is electrically connected with described power supply, and described search coil includes non magnetic closed hose and is wound in the conductor wire on described non magnetic closed hose, and the two ends of described conductor wire adopt shielding line to be electrically connected with described millivoltmeter。Each current-carrying wire frame is provided with plug and socket, described plug can with described socket grafting, the wire that each current-carrying wire frame is converted into framework by bendable is made, wire is provided with insulating barrier, each current-carrying wire frame has four ends, first end and the second end access in the loop of described power supply, and one of them of the 3rd end and the 4th end is provided with described plug, and another is provided with described socket。The experimental device for Ampere circuital theorem of the present invention can avoid experimental error, it is achieved preferably experimental verification effect。
Description
Technical field
The invention relates to a kind of physics facility, especially with regard to a kind of experimental device for Ampere circuital theorem。
Background technology
Fig. 1 show the schematic diagram of a kind of existing experimental device for Ampere circuital theorem。Referring to Fig. 1, existing experimental device for Ampere circuital theorem 10 includes power coil 11, search coil 12 and projects well millivoltmeter 13, and power coil 11 is made up of two current-carrying wire frame A, B, and wire frame is connected in parallel on the low-pressure end of mains transformer 14。Search coil 12 is made up of the enamel-covered wire on the close flexible pipe being wound on non-magnetic material, and flexible pipe is surrounded close-shaped by enamel-covered wire again after winding, and makes search coil 12 entangle any frame of current-carrying wire frame A or B。The two ends shielding line of search coil 12 is connected with projection millivoltmeter 13, and makes the earth terminal of projection millivoltmeter 13 and shielding line crust connect。During experiment, search coil 12 is sheathed on upper side frame or the lower frame of current-carrying wire frame A or B, to observe the reading of projection millivoltmeter 13, thus verifying Ampere circuital theorem。The quantity of current-carrying wire frame can be multiple, such as arranges multiple current-carrying wire frame A, B, C, D......, in order to obtains and organizes experimental result more。
But, in above-mentioned experimental device for Ampere circuital theorem 10, in experimentation, need repeatedly the hose end of search coil 12 to be taken apart, then search coil 12 is sheathed on different upper side frames or the lower frame of current-carrying wire frame A, B, C, D......, due to the coil comparatively dense being wound around on search coil 12, the hose end taking search coil 12 apart is inconvenient, and it is easily changed the loop construction wound before, it is possible to experimental error can be caused, affect experiment effect。
Summary of the invention
Present invention aim at providing a kind of experimental device for Ampere circuital theorem, experimental error can be avoided, it is achieved preferably experimental verification effect。
For reaching above-mentioned advantage, the present invention provides a kind of experimental device for Ampere circuital theorem, and it includes at least one current-carrying wire frame, search coil, millivoltmeter and power supply。At least one current-carrying wire frame described is electrically connected with described power supply, and described search coil includes non magnetic closed hose and is wound in the conductor wire on described non magnetic closed hose, and the two ends of described conductor wire adopt shielding line to be electrically connected with described millivoltmeter。Each current-carrying wire frame is provided with plug and socket, described plug can with described socket grafting, the wire that each current-carrying wire frame is converted into framework by bendable is made, wire is provided with insulating barrier, each current-carrying wire frame has four ends, first end and the second end access in the loop of described power supply, and one of them of the 3rd end and the 4th end is provided with described plug, and another is provided with described socket。
In one embodiment of the invention, described plug is provided with the plug connector of protrusion, and described socket is provided with the jack corresponding with described plug connector, and described plug connector can be inserted in described jack。
In one embodiment of the invention, described experimental device for Ampere circuital theorem also includes power control unit, and described power control unit is electrically connected with described power supply, for controlling voltage and the frequency of the alternating current of described power supply output。
In one embodiment of the invention, described experimental device for Ampere circuital theorem also includes processor, described processor is electrically connected with described power control unit and described millivoltmeter, the framework information of the described current-carrying wire frame that the voltage of the alternating current that described processor exports for the induced electromotive force that described millivoltmeter is sensed, described power supply and frequency data and described search coil entangle processes, to obtain experimental result。
In one embodiment of the invention, described experimental device for Ampere circuital theorem also includes display device, and described display device is electrically connected with described processor, for showing the experimental result that described processor exports。
In one embodiment of the invention, described display device is display screen or projector。
In the experimental device for Ampere circuital theorem of the present invention, each current-carrying wire frame is provided with plug and socket, described plug can with described socket grafting, open or close the relative position of regulating carrying streamline frame and search coil by plug and socket, increase the convenience of experiment, and can avoid causing experimental error because taking search coil apart, it is achieved preferably experimental verification effect。
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, and in order to above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows。
Accompanying drawing explanation
Fig. 1 show the schematic diagram of a kind of existing experimental device for Ampere circuital theorem。
Fig. 2 show the schematic diagram of the experimental device for Ampere circuital theorem of first embodiment of the invention。
The schematic perspective view that Fig. 3 show in the experimental device for Ampere circuital theorem of Fig. 2 plug and socket。
Fig. 4 show the schematic diagram of the experimental device for Ampere circuital theorem of second embodiment of the invention。
Detailed description of the invention
For further setting forth that the present invention reaches technological means and effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention proposed according to the present invention, structure, feature and effect thereof, describe in detail as after。
Fig. 2 show the schematic diagram of the experimental device for Ampere circuital theorem of first embodiment of the invention。Refer to Fig. 2, the experimental device for Ampere circuital theorem 20 of first embodiment is used for verifying Ampere circuital theorem, Ampere circuital theorem is the theorem of quantitative relationship of the circulation setting forth magnetic field and the conduction electric current algebraical sum surrounded, and the algebraical sum of the electric current that its general contents is magnetic induction H surrounds to described closed curve along the line integral (circulation value) of any closed curve L is directly proportional。Experimental device for Ampere circuital theorem 20 includes at least one current-carrying wire frame 21, search coil 22, millivoltmeter 23, processor 24, display device 25, power supply 26 and power control unit 27。
Fig. 2 schematically illustrates two current-carrying wire frames 21, two current-carrying wire frame 21 respectively the first current-carrying wire frame 21a and the second current-carrying wire frame 21b, but the quantity of current-carrying wire frame 21 is not limited, and in other embodiments, the quantity of current-carrying wire frame 21 can be multiple。Each current-carrying wire frame 21 includes the framework 212 closed and the conductor wire (not shown) being set around in framework 212, in each framework 211, the number of turn of the conductor wire of winding is identical, the described number of turn is such as 40 to 50 circles, thus the number of turn being set around on conductor wire is comparatively sparse, the two ends of conductor wire are accessed in the loop of power supply 26。Enamel-covered wire is made up of conductor and insulating barrier two, and after the annealed softening of bare wire, then through repeatedly painting, baking forms。The material of framework 212 be plastics or other can there is the material of slight deformation, framework 212 is provided with plug 212a and socket 212b。Plug 212a and socket 212b particular location in framework 212 can be determined according to actual demand, it is preferred that, plug 212a and socket 212b may be disposed at conductor wire in framework 212 and is wound around rarer position。
The schematic perspective view that Fig. 3 show in the experimental device for Ampere circuital theorem of Fig. 2 plug and socket。It is provided with the plug connector 212c of protrusion, socket 212b to be provided with and can be inserted in jack 212d please also refer to Fig. 3, plug 212a with described jack 212d corresponding for plug connector 212c, plug connector 212c, to realize the connection between plug 212a and socket 212b。When plug 212a inserts socket 212b, framework 212 becomes an obturator, and when plug 212a is from extraction in socket 212b, framework 212 can open certain angle, thus the convenient relative position adjusting framework 212 and search coil 22。It should be noted that the structure of plug 212a and socket 212b is not limited with the present embodiment。
Search coil 22 is made up of the enamel-covered wire on the close flexible pipe being wound on non-magnetic material, precision in order to avoid the flux effects experimental result of the torus self that is wound on flexible pipe enamel-covered wire, when around enamel-covered wire, first enamel-covered wire is wound around from the top of flexible pipe to end the predetermined number of turn, again enamel-covered wire is looped back to, from the end of flexible pipe, the number of turn that top is same, the described number of turn is such as 1000 circles, but is not limited。Search coil 22 is surrounded close-shaped after winding by enamel-covered wire again, and the two ends shielding line 221 of search coil 22 is connected with millivoltmeter 23, and makes the earth terminal of millivoltmeter 23 be connected with shielding line crust。Search coil 22 and millivoltmeter 23 need not adjust after connecting again。
Millivoltmeter 23 is for sensing the induced electromotive force of search coil 22。Processor 24 is electrically connected with millivoltmeter 23, display device 25 and power control unit 27, and the induced electromotive force that millivoltmeter 23 senses is transferred to processor 24。Display device 25 is display screen or projector, and operator can pass through display device 25 and input data to processor 24, for instance, the framework information of the current-carrying wire frame 21 that search coil 22 entangles is inputted to processor 24。Power supply 26 is electrically connected with the conductor wire on current-carrying wire frame 21 and power control unit 27, power supply 26 can provide the alternating current of different voltage and frequency for current-carrying wire frame 21, power supply 26 has multiple gear, the alternating current of the exportable predeterminated voltage of each gear and frequency, power control unit 27 is used for controlling the voltage of the alternating current of power supply 26 output and frequency and informing processor 24。The framework information of the current-carrying wire frame 21 that the voltage of the alternating current of induced electromotive force that millivoltmeter 23 is sensed by processor 24, power supply 26 output and frequency data and search coil 22 entangle processes, to obtain experimental result, and presented by display device 25 form of figure or form。
During experiment, unplug the plug 212a and socket 212b of current-carrying wire frame 21, the upper side frame of current-carrying wire frame 21 or lower frame are inserted after in search coil 22, then plug 212a is inserted socket 212b；Such as, the upper side frame of the first current-carrying wire frame 21a and the upper side frame of the second current-carrying wire frame 21b can be first made to insert in search coil 22, then, the plug 212a of the first current-carrying wire frame 21a is inserted socket 212b, power control unit 27 is adopted to control voltage and the frequency of the alternating current that power supply 26 exports again, and the voltage of alternating current that exported by power supply 26 of power control unit 27 and frequency are transferred to processor 24, operator can pass through the framework information of the current-carrying wire frame 21 that search coil 22 is entangled by display device 25 be transferred to processor 24。After current-carrying wire frame 21 energising, millivoltmeter 23 can sense the induced electromotive force of search coil 22, and described induced electromotive force is transferred to processor 24。The framework information of the current-carrying wire frame 21 that the voltage of the alternating current that power supply 26 is exported by processor 24 and frequency, described induced electromotive force and search coil 22 entangle processes, and can obtain one group of experimental data。Then, can passing through voltage and the frequency of the alternating current of manipulation Switching power 26 output to power control unit 27, the induced electromotive force of search coil 22 changes accordingly, and processor 24 can obtain again another group experimental data。
In order to obtain more experimental data, upper side frame or the lower frame that can change current-carrying wire frame 21 insert the mode in search coil 22, such as, unplug the first current-carrying wire frame 21a and the plug 212a and socket 212b of the second current-carrying wire frame 21b, the upper side frame making the upper side frame of the first current-carrying wire frame 21a, lower frame and the second current-carrying wire frame 21b is positioned at search coil 22 (as shown in Figure 2), starts power supply 26 and changes the voltage of alternating current of power supply 26 output and frequency can obtain and organize experimental data more。
The framework information of the current-carrying wire frame 21 that the voltage of the alternating current that power supply 26 is exported by processor 24 and frequency, described induced electromotive force and search coil 22 entangle processes, to obtain experimental result, experimental result graphically or the form of form presented by display device 25。Experimental result is illustrated as follows, when the voltage of the alternating current of power supply 26 output is identical with frequency, when search coil 22 entangles the upper side frame of the first current-carrying wire frame 21a and the second current-carrying wire frame 21b simultaneously, owing to the sense of current is identical, the current value increasing entangled is twice, now, the reading of millivoltmeter 23 also doubles。When the upper side frame of the upper side frame of the first current-carrying wire frame 21a, lower frame and the second current-carrying wire frame 21b, owing to the sense of current of the upper side frame of the first current-carrying wire frame 21a, lower frame is contrary, so not contributing for electric current algebraical sum the first current-carrying wire frame 21a, the reading of millivoltmeter 23 is identical with the situation of one upper side frame of set, thus would know that the algebraical sum of the magnetic induction H electric current surrounded to described closed curve along the line integral (circulation value) of any closed curve L is directly proportional, Ampere circuital theorem is verified。
It should be noted that the mode that the quantity of current-carrying wire frame 21 and upper side frame thereof or lower frame insert in search coil 22 is not limited with the present embodiment, arbitrarily can set according to actual experiment demand。
Fig. 4 show the schematic diagram of the experimental device for Ampere circuital theorem of second embodiment of the invention。Refer to Fig. 4, the experimental device for Ampere circuital theorem 30 of the second embodiment is similar to the experimental device for Ampere circuital theorem 20 of first embodiment, difference is, the wire that each current-carrying wire frame 31 of experimental device for Ampere circuital theorem 30 is converted into framework by bendable is made, wire can be provided with insulating barrier, each current-carrying wire frame 31 has four ends 311a, 311b, 311c, 311d, first end 311a and the second end 311b accesses in the loop of power supply 36, one of them of 3rd end 311c and the four end 311d is provided with plug 312a, and another is provided with socket 312b。The experimentation of the experimental device for Ampere circuital theorem 30 of the second embodiment is identical with the experimentation of the experimental device for Ampere circuital theorem 20 of first embodiment, does not repeat them here。
In sum, the experimental device for Ampere circuital theorem of the present invention at least has the advantage that
1. in the experimental device for Ampere circuital theorem of the present invention, each current-carrying wire frame is provided with plug and socket, described plug can with described socket grafting, open or close the relative position of regulating carrying streamline frame and search coil by plug and socket, increase the convenience of experiment, and can avoid causing experimental error because taking search coil apart, it is achieved preferably experimental verification effect。
2. in an embodiment of the experimental device for Ampere circuital theorem of the present invention, controlled the voltage of alternating current of power supply output and frequency by power control unit and inform processor, facilitate the processor process to experimental data, realize Automated condtrol, and be conducive to presenting experimental result intuitively。
3. in an embodiment of the experimental device for Ampere circuital theorem of the present invention, the wire that each current-carrying wire frame is converted into framework by bendable is made, and plug and socket is arranged on described wire, and simple in construction advantageously reduces cost of manufacture。
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, any those skilled in the art, without departing within the scope of technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or is modified to the Equivalent embodiments of equivalent variations, in every case it is without departing from technical solution of the present invention content, according to any simple modification that above example is made by the technical spirit of the present invention, equivalent variations and modification, all still fall within the scope of technical solution of the present invention。
Claims (4)
1. an experimental device for Ampere circuital theorem, it includes at least one current-carrying wire frame, search coil, millivoltmeter and power supply, power control unit and processor, at least one current-carrying wire frame described is electrically connected with described power supply, described search coil includes non magnetic closed hose and is wound in the conductor wire on described non magnetic closed hose, the two ends of described conductor wire adopt shielding line to be electrically connected with described millivoltmeter, it is characterized in that, each current-carrying wire frame is provided with plug and socket, described plug can with described socket grafting, the wire that each current-carrying wire frame is converted into framework by bendable is made, wire is provided with insulating barrier, each current-carrying wire frame has four ends, first end and the second end access in the loop of described power supply, one of them of 3rd end and the 4th end is provided with described plug, another is provided with described socket；
Described power control unit is electrically connected with described power supply, for controlling voltage and the frequency of the alternating current of described power supply output；Described processor is electrically connected with described power control unit and described millivoltmeter, the framework information of the described current-carrying wire frame that the voltage of the alternating current that described processor exports for the induced electromotive force that described millivoltmeter is sensed, described power supply and frequency data and described search coil entangle processes, to obtain experimental result。
2. experimental device for Ampere circuital theorem as claimed in claim 1, it is characterised in that: described plug is provided with the plug connector of protrusion, and described socket is provided with the jack corresponding with described plug connector, and described plug connector can be inserted in described jack。
3. experimental device for Ampere circuital theorem as claimed in claim 1, it is characterised in that: described experimental device for Ampere circuital theorem also includes display device, and described display device is electrically connected with described processor, for showing the experimental result that described processor exports。
4. experimental device for Ampere circuital theorem as claimed in claim 3, it is characterised in that: described display device is display screen or projector。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310287175.0A CN103310690B (en) | 2013-07-10 | 2013-07-10 | Experimental device for Ampere circuital theorem |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310287175.0A CN103310690B (en) | 2013-07-10 | 2013-07-10 | Experimental device for Ampere circuital theorem |
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| CN103310690A CN103310690A (en) | 2013-09-18 |
| CN103310690B true CN103310690B (en) | 2016-06-22 |
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| CN108847103B (en) * | 2018-07-10 | 2020-05-22 | 焦明远 | High school physics is cutting magnetic induction line telecontrol equipment for experiments |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2622796Y (en) * | 2003-05-29 | 2004-06-30 | 四川大学 | Ampere loop theorem tester |
| CN203325297U (en) * | 2013-07-10 | 2013-12-04 | 河南工业职业技术学院 | Experimental device for Ampere circuital theorem |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2622796Y (en) * | 2003-05-29 | 2004-06-30 | 四川大学 | Ampere loop theorem tester |
| CN203325297U (en) * | 2013-07-10 | 2013-12-04 | 河南工业职业技术学院 | Experimental device for Ampere circuital theorem |
Non-Patent Citations (2)
| Title |
|---|
| 安培环路定理演示器的研制;叶瑞英等;《实验技术与管理》;20010630(第3期);第19-第22页 * |
| 安培环路定理的演示装置;钱泽均等;《大学物理》;19851031(第10期);第36-第39页 * |
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