Lenz's law demonstration instrument

A technology of Lenz's law and demonstrator, which is applied in the field of teaching aids, can solve the problems of lack of teaching aids, etc., and achieve the effect of small size and strong expandability

Pending Publication Date: 2015-11-11
上海市行知实验中学
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention discloses a Lenz's law demonstrator, which is used to solve the problem in the prior art that there is a lack of a teaching aid with strong expandability and small size, which can directly and vividly display Lenz's law

Method used

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  • Lenz's law demonstration instrument
  • Lenz's law demonstration instrument

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0023] figure 1 It is the structural representation of the Lenz's law demonstrator of the present invention, figure 2 It is the circuit diagram of the Lenz's law demonstrator of the present invention, please refer to figure 1 , figure 2 , a Lenz's law demonstrator, which includes: a shell 1, the shell 1 is provided with: a DC power supply 2, a DC boost module 3, the DC boost module 3 is connected to the DC power supply 2, and the DC boost A cement resistor 6 and an electrolytic capacitor 5 are connected in series between the output ends of the pressure module 3; a coil 8 and a thyristor 7 are also included, the gate level of the thyristor 7 is connected to the positive pole of the power supply, and the cathode of the thyristor 7 is connected between the electrolytic capacitor 5 and the Between the negative poles of the power supply, the anode of the thyr...

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Abstract

The invention discloses a Lenz's law demonstration instrument, and relates to the field of medical equipment. The Lenz's law demonstration instrument includes a housing, the housing is internally provided with a direct current power supply and a direct current boosting module which are connected, an output end of the direct current boosting module is connected with a cement resistor and an electrolytic capacitor in series; the Lenz's law demonstration instrument also includes a coil and a thyristor, the gate level of the thyristor is connected with a positive electrode of the power supply, the cathode of the thyristor is connected between the electrolyte capacitor and a negative electrode of the power supply, and the anode of the thyristor is connected with the coil in series and is then connected between the cement resistor and the electrolyte capacitor; a first switch is connected in series between a power supply positive electrode output end and the direct current boosting module; and a second switch is connected in series between the power supply positive electrode output end and the gate level of the thyristor. Supply voltage is boosted through a direct current boosting device to charge the electrolyte capacitor, and then the electrolyte capacitor is connected with the coil through control of the thyristor.

Description

technical field [0001] The invention relates to a teaching aid, in particular to a Lenz's law demonstrator. Background technique [0002] Lenz's law: The induced current has such a direction that the magnetic field of the induced current always hinders the change of the magnetic flux causing the induced current. [0003] Lenz's law can also be expressed as: The effect of the induced current always opposes the cause of the induced current. [0004] Lenz's law formula: E=vBL (v is the speed at which the rod moves in the magnetic field) [0005] Lenz's law (Lenz'slaw) is a law of electromagnetism, which can be used to judge the direction of electromotive force generated by electromagnetic induction. It was discovered by Russian physicist Heinrich Lenz in 1834. [0006] In the prior art, there is a lack of a teaching aid with strong expandability and small size that can directly and vividly display the law. Contents of the invention [0007] The invention discloses a Lenz'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/18
Inventor 陈岭
Owner 上海市行知实验中学
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