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Electromagnetic induction integration experimental device and its manufacturing method

An experimental device and electromagnetic induction technology, which is applied in the direction of educational appliances, instruments, teaching models, etc., can solve the problems of inability to accurately measure the quantitative relationship of electromagnetic induction phenomena, and achieve the effect of simple structure and convenient operation

Inactive Publication Date: 2007-10-17
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is still not possible to accurately determine the quantitative relationship between the electromagnetic induction phenomena

Method used

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  • Electromagnetic induction integration experimental device and its manufacturing method
  • Electromagnetic induction integration experimental device and its manufacturing method
  • Electromagnetic induction integration experimental device and its manufacturing method

Examples

Experimental program
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Embodiment Construction

[0019] In the electromagnetic induction comprehensive experimental device shown in Figure 1, the cylindrical permanent magnet 1 falls freely to the magnet adsorption pad 5 through the vertical conduit 3 fixed on the special support 4 under the action of gravity. The two multi-tap induction coils 2 arranged outside the conduit 3 transmit the entire change process of the induced electromotive force generated when the cylindrical permanent magnet 1 passes to the two channels of the digital storage oscilloscope 6 for display and storage. Conduit 3 selects glass tube, copper tube, aluminum tube or stainless steel tube for use according to the difference of experiment content, and the external diameter of conduit 3 is 15 millimeters, and internal diameter is 12 millimeters, and length is 1-1.5 meter, is convenient to the people operation of different heights. The diameter of the cylindrical permanent magnet 1 is 10 millimeters, and the length is 10-20 millimeters, if it is too long, ...

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Abstract

The invention discloses an electromagnetic induction comprehensive experiment device capable of obtaining and recording all information of an electromagnetic induction process to be analysed and studied. A cylindrical permanent magnet (1) used by the device passes through a guide tube (3) upright fixed on a special bracket (4) and free falls to a magnet adsorption pad (5) by gravitation; two multi-tap induction coils (2) provided outside the guide tube and capable of moving up and down transmits all changing processes of an induced electromotive force, which is generated when the cylindrical permanent magnet (1) passes, to two passages of a digital storage oscillograph (6) to be displayed and stored. The invention also discloses a manufacturing method of the special bracket and the multi-tap induction coils. The device has a simple structure, is convenient to operate, realizes measurement of physical quantities such as gravity, magnetic force and the like while quantification-studying Faraday's law of electromagnetic and Lenz's law.

Description

technical field [0001] The invention relates to an electromagnetic induction experimental device, in particular to an electromagnetic induction comprehensive experimental device composed of a magnet and a coil. The invention also relates to the manufacturing method of the multi-tap induction coil and the special bracket of the electromagnetic induction comprehensive experiment device. Background technique [0002] The phenomenon of electromagnetic induction is one of the most important discoveries in electromagnetism. It reveals important aspects of the interconnection and transformation of electricity and magnetism. Its discovery has epoch-making significance in science and technology. After ten years of careful experimental research, Faraday discovered the phenomenon of electromagnetic induction for the first time in 1831, and concluded Faraday's law of electromagnetic induction: the magnitude of the induced electromotive force in a conductor loop is proportional to the ra...

Claims

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Application Information

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IPC IPC(8): G09B23/18
Inventor 张爱军
Owner OCEAN UNIV OF CHINA
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