CN200983222Y - Photoelectric demonstration device for self-induction phenomena - Google Patents
Photoelectric demonstration device for self-induction phenomena Download PDFInfo
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- CN200983222Y CN200983222Y CN 200620022611 CN200620022611U CN200983222Y CN 200983222 Y CN200983222 Y CN 200983222Y CN 200620022611 CN200620022611 CN 200620022611 CN 200620022611 U CN200620022611 U CN 200620022611U CN 200983222 Y CN200983222 Y CN 200983222Y
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- emitting diode
- light emitting
- inductance
- light
- demonstrating
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Abstract
A self-induction photoelectric demonstrating device comprises a circuit illustrative diagram (2) printed on a working bottom board (1), an aneroid battery power source (E) placed on the working bottom board, a switch (S), four light-emitting diodes (D<1>, D<2>, D<3>, D<4>) and an electric inductor (L), wherein a light-emitting diode (D<1>) used for displaying the on-off mode of the circuit is concatenated in the main circuit (2a) and a branch (2b) made by the parallel connection of two light-emitting diodes is paralleled connected with a branch (2c) made by the parallel connection of the electric inductor and another light-emitting diode. The positive-negative electrode direction of one light-emitting diode (D<3>) of the two-light-emitting diode parallel connection branch (2c) is as the same as the positive-negative electrode direction of the power source, and the positive-negative electrode direction of the other light-emitting diode (D<4>) is opposite to the positive-negative electrode direction of the power source. The utility model has the advantages of audio-visual and vivid demonstration effects, displaying the phenomena of 'delayed luminescence' and 'interrupting luminescence' and observing the polarity of audio-visual induced potential.
Description
Technical field
The utility model belongs to the teaching demonstration device technical field, mainly is the device that is used for physics teaching demonstration self inductance.
Background technology
In the physics teaching of secondary education school, traditional self inductance teaching demonstration device is by observing the luminescence phenomenon of miniature bulb, observe the self-induced e.m.f that produces on the inductance and the generation and the variation of self induction voltage.Because the limitation of circuit design, display mode is single, and visual effect is general, and miniature bulb damages easily, and reliability is not high, can not observe the variation of self-induced e.m.f polarity intuitively.And, because the existence of remanent magnetism on the inductance element has negative influence to the demonstration effect.
Summary of the invention
The purpose of this utility model, a kind of easy to use flexible, the demonstration effect lively self inductance photoelectricity apparatus for demonstrating directly perceived that provide in order to overcome above-mentioned the deficiencies in the prior art just.
The purpose of this utility model is achieved through the following technical solutions.
Self inductance photoelectricity apparatus for demonstrating, this apparatus for demonstrating constitutes by being printed on the circuit theory diagrams on the working plate and being arranged in the circuit that dry battery power on the working plate, switch, four light emitting diodes and inductance form; Wherein, a light emitting diode that is used for the display circuit on off operating mode is connected on the main line, and the branch road of two light emitting diode parallel connections is in parallel with the branch road that inductance and another light emitting diode are connected; The cathode and anode directions of a light emitting diode in two light emitting diode parallel branches is identical with the power positive cathode direction, and the cathode and anode directions of another light emitting diode is opposite with the power positive cathode direction.
The normal luminous operating voltage of four light emitting diodes of the utility model is 3 volts; Show that the luminous diode of outage is a high brightness LED, its excess-three light emitting diode is respectively red, green, orange large size light emitting diode; Switch is on-off type reset switch or single-pole single-throw switch (SPST); Inductance is an iron core formula special inductive; Supply voltage is 6V.
Because the operating voltage of light emitting diode is 3 volts, when switch closure, the light emitting diode in the branch road identical with the power positive cathode direction with not having series inductance and cathode and anode directions of the light emitting diode on the main line is normally luminous; And the light emitting diode in being in series with the branch road of inductance is positive right negative for a left side because of the induced potential polarity that inductance produces, and with the result of supply voltage superposition, makes the voltage of its acquisition gradually big, can be observed this light emitting diode delayed luminescence.When power switch disconnects, because being a left side, the induced potential polarity that inductance produces just bearing the right side, in the loop of forming by the inductive branch light emitting diode opposite with the power positive cathode direction, can be observed the moment conducting of this light emitting diode, and send than high light with cathode and anode directions.
The utility model adopts the diode displaying mode, utilizes the operating characteristic with the light emitting diode and the high brightness LED of distinct color, has strengthened the visual effect of demonstration, and effect is intuitively lively.Utilize the unidirectional conducting characteristics of luminescence of light emitting diode, except that can demonstrating " delayed luminescence " and " it is luminous to cut off the power supply " phenomenon, the polarity that also can observe out induced potential has intuitively remedied the deficiency of traditional self inductance apparatus for demonstrating.Simultaneously, the magnetic field energy that stores because of inductance was fully released in lumination of light emitting diode moment, and the miniature bulb that uses in the light emitting diode that is adopted and the conventional apparatus is compared, and in use is not easy to damage; Do not have remanent magnetism because of the magnetic field that inductance stores, not only improved the success ratio of experiment, improved the reliability of apparatus for demonstrating yet, and prolonged serviceable life.Power supply adopts dry cell, and whole device is safe and reliable.
Further set forth this practical content below in conjunction with Figure of description
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is a front view of the present utility model.
Embodiment
As shown in the figure, printed circuit schematic diagram 2 on working plate 1 is installed dry battery power E, single-pole single-throw switch (SPST) S, inductance L, light emitting diode D according to the principle shown in the circuit theory diagrams
1, D
2, D
3, D
4, with a light emitting diode D
1Be connected among the 2a of main line, be used for the display circuit on off operating mode.Two light emitting diode D
3, D
4Compose in parallel a branch road 2b, inductance L and another light emitting diode D
2Be composed in series another branch road 2c, with branch road 2b and 2c parallel connection; Light emitting diode D
3Cathode and anode directions identical with the power positive cathode direction, when switch S is connected, D
3With D
1Bright and demonstration energising delayed luminescence of while, light emitting diode D
4Cathode and anode directions opposite with the power positive cathode direction, moment is luminous when being used for showing outage.Three light emitting diode D
1, D
2, D
3Adopt red, green, orange large size light emitting diode respectively, another light emitting diode D
4Adopt high brightness LED, connect lead.
Presentation process is as follows: Closing Switch S can be observed red light emitting diode D
1With orange light emitting diode D
3Simultaneously luminous, green respectively light emitting diode D
2Delayed luminescence is extremely normally luminous, at this moment high brightness LED D
4Not luminous; Rapid cut-off switch S again, as seen, high brightness LED D only
4Send intense flash.At this moment its excess-three light emitting diode D
1, D
2, D
3Extinguish not luminous.Demonstrate out intuitively the self-induced e.m.f that produces on the inductance and the generation and the variation of self induction voltage, and the polarity of induced potential.
Claims (6)
1. self inductance photoelectricity apparatus for demonstrating is characterized in that, this apparatus for demonstrating is by being printed on the circuit theory diagrams (2) on the working plate (1) and being arranged in dry battery power (E), switch (S), four light emitting diode (D on the working plate
1, D
2, D
3, D
4) and the circuit formed of inductance (L) constitute; Wherein, a light emitting diode (D who is used for the display circuit on off operating mode
1) be connected in the main line (2a) two light emitting diode (D
3, D
4) branch road (2b) and inductance (L) and another light emitting diode (D in parallel
2) series connection branch road (2c) be in parallel; A light emitting diode (D in two light emitting diode parallel branches (2c)
3) cathode and anode directions identical with the power positive cathode direction, another light emitting diode (D
4) cathode and anode directions opposite with the power positive cathode direction.
2. self inductance photoelectricity apparatus for demonstrating according to claim 1 is characterized in that, four light emitting diode (D
1, D
2, D
3, D
4) normal luminous operating voltage be 3 volts.
3, apparatus for demonstrating according to claim 1 is characterized in that, shows the diode (D that outage is luminous
4) be high brightness LED, its excess-three light emitting diode (D
1, D
2, D
3) be respectively red, green, orange large size light emitting diode.
4, self inductance photoelectricity apparatus for demonstrating according to claim 1 is characterized in that, switch (S) is on-off type reset switch or single-pole single-throw switch (SPST).
5. self inductance photoelectricity apparatus for demonstrating according to claim 1 is characterized in that, inductance (L) is an iron core formula special inductive.
6. self inductance photoelectricity apparatus for demonstrating according to claim 1 is characterized in that supply voltage is 6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022611 CN200983222Y (en) | 2006-12-15 | 2006-12-15 | Photoelectric demonstration device for self-induction phenomena |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022611 CN200983222Y (en) | 2006-12-15 | 2006-12-15 | Photoelectric demonstration device for self-induction phenomena |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200983222Y true CN200983222Y (en) | 2007-11-28 |
Family
ID=38910373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620022611 Expired - Fee Related CN200983222Y (en) | 2006-12-15 | 2006-12-15 | Photoelectric demonstration device for self-induction phenomena |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200983222Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306468A (en) * | 2011-10-05 | 2012-01-04 | 黄瑞阳 | Self-inductive phenomenon demonstration instrument |
| RU2534981C1 (en) * | 2013-06-19 | 2014-12-10 | Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военно-космическая академия имени А.Ф. Можайского" Министерства обороны Российской Федерации | Apparatus investigating self-induction phenomenon |
-
2006
- 2006-12-15 CN CN 200620022611 patent/CN200983222Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306468A (en) * | 2011-10-05 | 2012-01-04 | 黄瑞阳 | Self-inductive phenomenon demonstration instrument |
| RU2534981C1 (en) * | 2013-06-19 | 2014-12-10 | Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военно-космическая академия имени А.Ф. Можайского" Министерства обороны Российской Федерации | Apparatus investigating self-induction phenomenon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20141215 |
|
| EXPY | Termination of patent right or utility model |