CN104751712A - Electromagnetic effect teaching instrument - Google Patents
Electromagnetic effect teaching instrument Download PDFInfo
- Publication number
- CN104751712A CN104751712A CN201310737853.9A CN201310737853A CN104751712A CN 104751712 A CN104751712 A CN 104751712A CN 201310737853 A CN201310737853 A CN 201310737853A CN 104751712 A CN104751712 A CN 104751712A
- Authority
- CN
- China
- Prior art keywords
- support
- current
- teaching instrument
- electromagnetic effect
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention provides an electromagnetic effect teaching instrument which is used to research on the magnetic effect of current. The teaching instrument is composed of a magnetic needle, a lead, a support, a rotating shaft, a polarity change switch and a voltage-variable DC power supply, wherein the lead is erected on the support, the support is erected on the pedestal and can rotate to be parallel with the magnetic needle, the polarity change switch changes the current direction of the lead, and the voltage-variable DC power supply changes the current value in the lead. The electromagnetic effect teaching instrument has the advantages that phenomena of electromagnetic effect can be observed visually, the structure is simple, and operation is easy.
Description
Technical field
The present invention is practically applicable to probe into magnetic effect of electric current.
Background technology
Probing into magnetic effect of electric current is the electromagnetic basis of study.Probe into magnetic effect of electric current equipment at present to piece together all temporarily, there is no the instrument of complete set.
Summary of the invention
This probes into magnetic effect of electric current, the invention provides a kind of galvanomagnetic effect teaching appliance.This galvanomagnetic effect teaching appliance is by needle, and wire, support, turning axle, reversing switch, variable voltage direct supply forms.Lead frame is on support, and support frame is rotatable parallel with needle to adapt on base, and reversing switch changes current in wire direction, and variable voltage direct supply changes size of current in wire, as shown in the figure.The invention has the beneficial effects as follows, magnetic effect of electric current phenomenon is observed on visual pattern ground, and structure is simple, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is the structural representation of galvanomagnetic effect teaching appliance:
Wherein 1 is needle, and 2 is wires, and 3 is supports, and 4 is turning axles, and 5 is variable voltage direct supplys, and 6 is reversing switches.
Embodiment
In Fig. 1, galvanomagnetic effect teaching appliance by needle (1), wire (2), support (3), turning axle (4), reversing switch (6), variable voltage direct supply (5) composition diagram showing device.Wire (2) frame is on support (3), and support (3) frame is rotatable parallel with needle (1) to adapt on base.Reversing switch (6) changes wire (2) direction of current.Variable voltage direct supply (5) changes size of current in wire (2).When probing into, runing rest wire is parallel with needle, opens reversing switch, observes out current field direction relevant with direction of current.Change voltage, current field changes.
Claims (1)
1. a galvanomagnetic effect teaching appliance, by needle, wire, support, turning axle, reversing switch, it is characterized in that: variable voltage direct supply composition is characterized in that: lead frame is on support, support frame is rotatable parallel with needle to adapt on base, and reversing switch changes current in wire direction, and variable voltage direct supply changes size of current in wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737853.9A CN104751712A (en) | 2013-12-30 | 2013-12-30 | Electromagnetic effect teaching instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737853.9A CN104751712A (en) | 2013-12-30 | 2013-12-30 | Electromagnetic effect teaching instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104751712A true CN104751712A (en) | 2015-07-01 |
Family
ID=53591319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310737853.9A Pending CN104751712A (en) | 2013-12-30 | 2013-12-30 | Electromagnetic effect teaching instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104751712A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110264839A (en) * | 2019-06-04 | 2019-09-20 | 张月宇 | A kind of magnetic effect apparatus for demonstrating of electrical engineering classroom electric current |
-
2013
- 2013-12-30 CN CN201310737853.9A patent/CN104751712A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110264839A (en) * | 2019-06-04 | 2019-09-20 | 张月宇 | A kind of magnetic effect apparatus for demonstrating of electrical engineering classroom electric current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |