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Ohm law digital demonstrating instrument

A technology of Ohm's law and demonstrator, applied in instruments, educational appliances, teaching models, etc., can solve problems such as inaccuracy and high efficiency, and achieve the effect of simple operation

Inactive Publication Date: 2015-07-01
王浩聿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the middle school physics experiment course, it is necessary to learn Ohm's law. At present, there is no accurate, efficient, easy-to-operate, intuitive and clear demonstration instrument for Ohm's law.

Method used

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  • Ohm law digital demonstrating instrument

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, a digital demonstrator of Ohm's law, including:

[0023] A control unit, and a voltage display module, a current display module and a resistance display module connected thereto; the control unit is an Arduino control unit.

[0024] The control unit can display the current information, voltage information and resistance information of the circuit under test on the voltage display module, current display module and resistance display module respectively according to the received current information and voltage information of the circuit under test. The voltage display module is a digital voltmeter, the current display module is a digital ammeter, and the resistance display module is a digital resistance meter. The digital resistance meter is a digital meter that can display the ratio of the numbers displayed by the digital voltmeter...

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PUM

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Abstract

The invention relates to an ohm law digital demonstrating instrument. The instrument comprises a control unit, a voltage display module, a current display module and a resistance display module, wherein the voltage display module, the current display module and the resistance display module are connected with the control unit. According to the ohm law digital demonstrating instrument, an adjustable power supply is arranged inside; the current in the circuit can be conveniently changed by adjusting the experimental power supply voltage during experiment so as to obtain different voltage and current in the circuit; the condition that the resistance of some conductors changes as the temperature or current changes can be directly observed, such as the change of the resistance of a small bulb under different currents.

Description

technical field [0001] The invention relates to a physical experiment instrument, in particular to a digital demonstrator of Ohm's law. Background technique [0002] The brief description of Ohm's law is: In the same circuit, the current in the conductor is proportional to the voltage across the conductor and inversely proportional to the resistance of the conductor. The law was proposed by German physicist Georg Simon Ohm in his paper "Determination of the Law of Conduction of Metals" published in April 1826. With the progress of research on circuit work, people gradually realized the importance of Ohm's law, and Ohm's reputation was greatly improved. In order to commemorate Ohm's contribution to electromagnetism, the physics community named the unit of resistance the Ohm, represented by the symbol Ω. [0003] In middle school physics experiment courses, Ohm's law needs to be studied. At present, there is no accurate, efficient, easy-to-operate, intuitive and clear Ohm's ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/18
CPCG09B23/181
Inventor 王浩聿刘维珩陈冠霖
Owner 王浩聿
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