CN104751716A - Ohm law digital demonstrating instrument - Google Patents
Ohm law digital demonstrating instrument Download PDFInfo
- Publication number
- CN104751716A CN104751716A CN201510140425.7A CN201510140425A CN104751716A CN 104751716 A CN104751716 A CN 104751716A CN 201510140425 A CN201510140425 A CN 201510140425A CN 104751716 A CN104751716 A CN 104751716A
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- China
- Prior art keywords
- display module
- resistance
- ohm law
- voltage
- circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Instructional Devices (AREA)
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
The present invention relates to a kind of physical experiment apparatus, particularly a kind of Ohm law digital presentation instrument.
Background technology
The summary of Ohm law is: in same circuit, and the electric current in conductor is directly proportional with the voltage at conductor two ends, and the resistance with conductor is inversely proportional to.This law to be delivered by roentgen George Xi Meng ohm that " mensuration of metallic conduction law " paper proposes in April, 1826.With the progress of research circuit working, people recognize the importance of Ohm law gradually, and the reputation of ohm also improves greatly.In order to commemorate that ohm is to electromagnetic contribution, community of physicists, by unit called after ohm of resistance, represents with symbol Ω.
In middle school physical experiment course, need to learn Ohm law, at present, also there is no a kind of precise and high efficiency, simple to operate, visual and clear Ohm law demonstration instrument.
Summary of the invention
The present invention will solve technical matters of the prior art, provides a kind of Ohm law digital presentation instrument.
In order to solve the problems of the technologies described above, technical scheme of the present invention is specific as follows:
A kind of Ohm law digital presentation instrument, comprising:
Control module, and connected voltage display module, electric current display module and resistance display module;
The current information of circuit-under-test, information of voltage and resistance information according to the current information of the circuit-under-test received and information of voltage, can be shown on voltage display module, electric current display module and resistance display module by described control module respectively.
In technique scheme, described control module is Arduino control module.
In technique scheme, described voltage display module is digital voltmeter.
In technique scheme, described electric current display module is digital electronic ammeter.
In technique scheme, described resistance display module is digital ohmmeter.
In technique scheme, be also provided with built-in regulated power supply, to power to circuit-under-test, control module, voltage display module, electric current display module and resistance display module.
In technique scheme, in described circuit-under-test, be provided with miniature bulb.
The present invention has following beneficial effect:
Ohm law digital presentation instrument of the present invention, measures the current value in Ohm law lecture experiment and magnitude of voltage digital instrument, and automatically calculates the ratio of voltage and current, shows with third digit table simultaneously.
The built-in regulated power supply of Ohm law digital presentation instrument of the present invention, can be changed the electric current in circuit very easily, obtain different voltage and current in circuit by adjustment experimental power supply voltage in experiment.Ohm law digital presentation instrument of the present invention also can direct vision to the situation of some conductor resistance with temperature or curent change, the situation of such as miniature bulb change of resistance under different electric current.
The features such as Ohm law digital presentation instrument of the present invention has precise and high efficiency, simple to operate, visual and clear are the best demonstration instruments of current Ohm law.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the structural representation of Ohm law digital presentation instrument of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, a kind of Ohm law digital presentation instrument, comprising:
Control module, and connected voltage display module, electric current display module and resistance display module; Described control module is Arduino control module.
The current information of circuit-under-test, information of voltage and resistance information according to the current information of the circuit-under-test received and information of voltage, can be shown on voltage display module, electric current display module and resistance display module by described control module respectively.Described voltage display module is digital voltmeter, and described electric current display module is digital electronic ammeter, and described resistance display module is digital ohmmeter.Namely described digital ohmmeter can show the digital instrument of the ratio of described digital voltmeter and described digital electronic ammeter display numeral.
Ohm law digital presentation instrument of the present invention, its inside is also provided with built-in regulated power supply, to power to being provided with the circuit-under-test of miniature bulb, control module, voltage display module, electric current display module and resistance display module.
Ohm law digital presentation instrument of the present invention in the course of the work, can be changed the electric current in circuit very easily, obtain different voltage and current in circuit by adjustment experimental power supply voltage.Ohm law digital presentation instrument of the present invention also can direct vision to the situation of some conductor resistance with temperature or curent change, the situation of such as miniature bulb change of resistance under different electric current.
The features such as Ohm law digital presentation instrument of the present invention has precise and high efficiency, simple to operate, visual and clear are the best demonstration instruments of current Ohm law.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (7)
1. an Ohm law digital presentation instrument, is characterized in that, comprising:
Control module, and connected voltage display module, electric current display module and resistance display module;
The current information of circuit-under-test, information of voltage and resistance information according to the current information of the circuit-under-test received and information of voltage, can be shown on voltage display module, electric current display module and resistance display module by described control module respectively.
2. Ohm law digital presentation instrument according to claim 1, is characterized in that, described control module is Arduino control module.
3. Ohm law digital presentation instrument according to claim 1, is characterized in that, described voltage display module is digital voltmeter.
4. Ohm law digital presentation instrument according to claim 1, is characterized in that, described electric current display module is digital electronic ammeter.
5. Ohm law digital presentation instrument according to claim 1, is characterized in that, described resistance display module is digital ohmmeter.
6. according to the Ohm law digital presentation instrument in claim 1-5 described in any one, it is characterized in that, be also provided with built-in regulated power supply, to power to circuit-under-test, control module, voltage display module, electric current display module and resistance display module.
7., according to the Ohm law digital presentation instrument in claim 1-5 described in any one, it is characterized in that, in described circuit-under-test, be provided with miniature bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140425.7A CN104751716A (en) | 2015-03-27 | 2015-03-27 | Ohm law digital demonstrating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140425.7A CN104751716A (en) | 2015-03-27 | 2015-03-27 | Ohm law digital demonstrating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104751716A true CN104751716A (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510140425.7A Pending CN104751716A (en) | 2015-03-27 | 2015-03-27 | Ohm law digital demonstrating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104751716A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768531A (en) * | 2017-03-29 | 2017-05-31 | 无锡永阳电子科技有限公司 | A kind of simple pressure sensor test system |
| CN106935117A (en) * | 2017-05-08 | 2017-07-07 | 王帆 | For the teaching aid of auxiliary direction electrophysics law teaching |
| CN111312042A (en) * | 2020-03-26 | 2020-06-19 | 崔菡 | Ohm law electricity experimental equipment |
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| CN2870044Y (en) * | 2005-12-31 | 2007-02-14 | 王庆有 | Photoelectric comprehensive experiment platform |
| CN200990158Y (en) * | 2006-12-31 | 2007-12-12 | 李彩珍 | Intelligent digital experimental apparatus |
| CN200990162Y (en) * | 2006-11-22 | 2007-12-12 | 齐天成 | Temperature and electric resistance relation demonstration apparatus |
| CN201117145Y (en) * | 2007-09-05 | 2008-09-17 | 安徽省科学技术馆 | Demonstration device for Ohm's law |
| CN201285612Y (en) * | 2008-10-09 | 2009-08-05 | 苏希锐 | Electrology experiment apparatus for multifunctional physics teaching |
| CN201302778Y (en) * | 2008-09-28 | 2009-09-02 | 苏希锐 | Ohm law demonstration device |
| KR20100021016A (en) * | 2008-08-14 | 2010-02-24 | 김바로 | Apparatus for ohm's law experiment using an eraser substrate |
| CN201689582U (en) * | 2010-05-07 | 2010-12-29 | 常州工学院 | Miniature electrical and electronic experimental table |
| CN202662204U (en) * | 2012-07-19 | 2013-01-09 | 李颀 | Ohm law demonstration device for experiment of student |
| CN203276673U (en) * | 2013-04-24 | 2013-11-06 | 常州轻工职业技术学院 | Electronic experimental device |
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2015
- 2015-03-27 CN CN201510140425.7A patent/CN104751716A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2870044Y (en) * | 2005-12-31 | 2007-02-14 | 王庆有 | Photoelectric comprehensive experiment platform |
| CN200990162Y (en) * | 2006-11-22 | 2007-12-12 | 齐天成 | Temperature and electric resistance relation demonstration apparatus |
| CN200990158Y (en) * | 2006-12-31 | 2007-12-12 | 李彩珍 | Intelligent digital experimental apparatus |
| CN201117145Y (en) * | 2007-09-05 | 2008-09-17 | 安徽省科学技术馆 | Demonstration device for Ohm's law |
| KR20100021016A (en) * | 2008-08-14 | 2010-02-24 | 김바로 | Apparatus for ohm's law experiment using an eraser substrate |
| CN201302778Y (en) * | 2008-09-28 | 2009-09-02 | 苏希锐 | Ohm law demonstration device |
| CN201285612Y (en) * | 2008-10-09 | 2009-08-05 | 苏希锐 | Electrology experiment apparatus for multifunctional physics teaching |
| CN201689582U (en) * | 2010-05-07 | 2010-12-29 | 常州工学院 | Miniature electrical and electronic experimental table |
| CN202662204U (en) * | 2012-07-19 | 2013-01-09 | 李颀 | Ohm law demonstration device for experiment of student |
| CN203276673U (en) * | 2013-04-24 | 2013-11-06 | 常州轻工职业技术学院 | Electronic experimental device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768531A (en) * | 2017-03-29 | 2017-05-31 | 无锡永阳电子科技有限公司 | A kind of simple pressure sensor test system |
| CN106935117A (en) * | 2017-05-08 | 2017-07-07 | 王帆 | For the teaching aid of auxiliary direction electrophysics law teaching |
| CN111312042A (en) * | 2020-03-26 | 2020-06-19 | 崔菡 | Ohm law electricity experimental equipment |
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Application publication date: 20150701 |