CN202093717U - Electromagnetism teaching aid - Google Patents
Electromagnetism teaching aid Download PDFInfo
- Publication number
- CN202093717U CN202093717U CN2011201406476U CN201120140647U CN202093717U CN 202093717 U CN202093717 U CN 202093717U CN 2011201406476 U CN2011201406476 U CN 2011201406476U CN 201120140647 U CN201120140647 U CN 201120140647U CN 202093717 U CN202093717 U CN 202093717U
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- triode
- light
- emitting diodes
- control circuit
- teaching aid
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Abstract
The utility model provides an electromagnetism teaching aid, belonging to the technical field of teaching aids. The electromagnetism teaching aid can be used for vividly and directly displaying the relationship of existence and direction of electric current and a magnetic field so as to help students learn and comprehend the teaching content of the Ampere's rule. The electromagnetism teaching aid comprises a demonstration board and is structurally characterized in that a strip-shaped board is arranged on the demonstration board and spirally wound with a first light-emitting diode band, and a second light-emitting diode band is arranged on the periphery of the strip-shaped board according to the external magnetic field track of an electric solenoid; a control circuit is arranged below the strip-shaped board and connected with the first and second light-emitting diode bands, and an external battery binding post connected with the control circuit is further arranged on the edge above the strip-shaped board.
Description
Technical field
The utility model is to belong to physical piece, education; Cryptology; Show; Advertisement; The big class of seal, education or demonstration equipment; Be used to the apparatus of imparting knowledge to students or communicating by letter with blind person, deaf person or mute; Model; Planetarium; Terrestrial globe; Map; The figure watch group, physical little technical group field, more specifically saying so relates to the Ampere's law teaching aid.
Background technology
About the study of Ampere's law, what the content of study was judged is the relation of direction of current and magnetic direction in the present junior middle school physics teaching.Because this relation is three-dimensional, there is not the demonstration teaching aid of intuitive again, only by teacher's explanation of drawing on blackboard, the student of some space imagining ability differences is also very difficult to be imagined, and also produces difficulty to learning this knowledge.
Summary of the invention
The utility model is exactly at the problems referred to above, and a kind of electromagnetics teaching aid is provided, and this teaching aid can help visual in image the showing of the relation of the existence in electric current and magnetic field and direction the student to learn and understand the content of courses of Ampere's law.
In order to realize above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, the utility model comprises demonstration board, its structural feature demonstration board is provided with stripe board, the helical type is wound with the first light-emitting diodes pipe racks on the stripe board, according to energization solenoid external magnetic field trajectory alignment the second light-emitting diodes pipe racks is arranged around the stripe board; The stripe board below is provided with control circuit, and control circuit links to each other with the first light-emitting diodes pipe racks, the second light-emitting diodes pipe racks, and the stripe board top edges also is provided with the external connection battery binding post that links to each other with control circuit.
The first light-emitting diodes pipe racks and the second light-emitting diodes pipe racks are formed by three groups of light emitting diodes, and the light emitting diode in every group of light emitting diode is series connection, and the light emitting diode in three groups of light emitting diodes is alternately arranged.
Control circuit is made up of counter, triode, switching diode, wherein the base stage of the first triode Q1, the second triode Q2 links to each other with the external connection battery binding post respectively, the collector of the first triode Q1, the second triode Q2 links to each other with two counters by the 3rd triode Q3, the 4th triode Q4 respectively, and two counters all link to each other with three groups of light emitting diodes by the 7th triode Q7, the 8th triode Q8, the 9th triode Q9.
The beneficial effects of the utility model:
The utility model adopt modern electronic technology physics teaching with about sense of current and magnetic direction concern showing of innervation, becoming abstract-learning is intuitive study; The utility model is again stereo display, so the classmate of some space imagining ability differences can understand the learning content of Ampere's law, good demonstration effect very easily.
The utility model adopts the modern highlighted light emitting diode of electronic component to show as innervation, and its brightness height is bright in luster, energy-conservation, and environmental protection is safe and reliable.
The utility model produces different dynamic display effects by the polarity difference of external connection battery, and is therefore simple to operate.
Description of drawings
Fig. 1 is the physical phenomenon schematic diagram that the utility model will be demonstrated.
Fig. 2 is the utility model structural representation.
Fig. 3 is the circuit diagram of the utility model control circuit.
In the accompanying drawing, 1 is the first light-emitting diodes pipe racks, and 2 is the second light-emitting diodes pipe racks, and 3 is stripe board, and 4 is the external connection battery binding post.
Embodiment
The utility model comprises demonstration board, and demonstration board is provided with stripe board 3, and the helical type is wound with the first light-emitting diodes pipe racks 1 on the stripe board 3, according to energization solenoid external magnetic field trajectory alignment the second light-emitting diodes pipe racks 2 is arranged around the stripe board 3; Stripe board 3 belows are provided with control circuit, and control circuit links to each other with the first light-emitting diodes pipe racks 1, the second light-emitting diodes pipe racks 2, and stripe board 3 top edges also are provided with the external connection battery binding post 4 that links to each other with control circuit.
The first light-emitting diodes pipe racks 1 and the second light-emitting diodes pipe racks 2 are formed by three groups of light emitting diodes, and the light emitting diode in every group of light emitting diode is series connection, and the light emitting diode in three groups of light emitting diodes is alternately arranged.
Control circuit is made up of counter, triode, switching diode, wherein the base stage of the first triode Q1, the second triode Q2 links to each other with external connection battery binding post 4 respectively, the collector of the first triode Q1, the second triode Q2 links to each other with two counters by the 3rd triode Q3, the 4th triode Q4 respectively, and two counters all link to each other with three groups of light emitting diodes by the 7th triode Q7, the 8th triode Q8, the 9th triode Q9.
As a kind of preferred version, the counter in the control circuit adopts the CD4017 decade counter, and the switching diode in the control circuit adopts the 1N4007 type.
In the control circuit, triode Q1-Q4 has formed two on-off circuits, and control two counters respectively, the battery polar difference that is connect by external connection battery binding post 4, two counters are worked respectively, and then make that the light on and off order of three groups of light emitting diodes is different, produce different dynamic display effects.
Claims (4)
1. electromagnetics teaching aid, comprise demonstration board, it is characterized in that demonstration board is provided with stripe board (3), stripe board (3) goes up the helical type and is wound with the first light-emitting diodes pipe racks (1), and stripe board (3) has the second light-emitting diodes pipe racks (2) according to energization solenoid external magnetic field trajectory alignment all around; Stripe board (3) below is provided with control circuit, and control circuit links to each other with the first light-emitting diodes pipe racks (1), the second light-emitting diodes pipe racks (2), and stripe board (3) top edges also is provided with the external connection battery binding post (4) that links to each other with control circuit.
2. electromagnetics teaching aid according to claim 1, it is characterized in that the first light-emitting diodes pipe racks (1) and the second light-emitting diodes pipe racks (2) form by three groups of light emitting diodes, light emitting diode in every group of light emitting diode is series connection, and the light emitting diode in three groups of light emitting diodes is alternately arranged.
3. electromagnetics teaching aid according to claim 1, it is characterized in that control circuit is made up of counter, triode, switching diode, wherein the base stage of the first triode Q1, the second triode Q2 links to each other with external connection battery binding post (4) respectively, the collector of the first triode Q1, the second triode Q2 links to each other with two counters by the 3rd triode Q3, the 4th triode Q4 respectively, and two counters all link to each other with three groups of light emitting diodes by the 7th triode Q7, the 8th triode Q8, the 9th triode Q9.
4. electromagnetics teaching aid according to claim 3 is characterized in that the counter in the control circuit adopts the CD4017 decade counter, and the switching diode in the control circuit adopts the 1N4007 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201406476U CN202093717U (en) | 2011-05-06 | 2011-05-06 | Electromagnetism teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201406476U CN202093717U (en) | 2011-05-06 | 2011-05-06 | Electromagnetism teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093717U true CN202093717U (en) | 2011-12-28 |
Family
ID=45368771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201406476U Expired - Fee Related CN202093717U (en) | 2011-05-06 | 2011-05-06 | Electromagnetism teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093717U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103150950A (en) * | 2013-01-27 | 2013-06-12 | 白洪义 | LC electromagnetic oscillation demonstration instrument |
| CN106157764A (en) * | 2015-05-15 | 2016-11-23 | 刘绍家 | A kind of instruments used for education of visible light demonstrating electrical magnetic phenomenon |
-
2011
- 2011-05-06 CN CN2011201406476U patent/CN202093717U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103150950A (en) * | 2013-01-27 | 2013-06-12 | 白洪义 | LC electromagnetic oscillation demonstration instrument |
| CN106157764A (en) * | 2015-05-15 | 2016-11-23 | 刘绍家 | A kind of instruments used for education of visible light demonstrating electrical magnetic phenomenon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20130506 |