CN204315146U - Self-inductance power experiment instrument - Google Patents
Self-inductance power experiment instrument Download PDFInfo
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- CN204315146U CN204315146U CN201420539658.5U CN201420539658U CN204315146U CN 204315146 U CN204315146 U CN 204315146U CN 201420539658 U CN201420539658 U CN 201420539658U CN 204315146 U CN204315146 U CN 204315146U
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- light emitting
- self
- emitting diode
- diode
- telefault
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Abstract
The utility model discloses a kind of self-inductance power experiment instrument, is made up of transparent organic glass base plate, support, solenoid, iron core, switch, light emitting diode, wire, rheochord, little lamp socket and power supply.Plexiglass base plate is screwed on support, and other all prototype parts are screwed on transparent machine glass plate, also whole instrument rope can be suspended on blackboard, so that teacher's demonstration; Wire is wrapped on iron core and forms telefault; There is an external power interface switch joint side, two light emitting diode place in circuit directions are contrary, telefault and two light emitting diode parallel connections, use diode to have the characteristic of one-way conduction, can judge self-inductance power sense of current by the luminous situation of observing diode.
Description
Technical field
This experimental apparatus gives a kind of method of checking self-inductance power experiment newly, can be used for the physics teaching of junior-senior high school and university.Solve in traditional experimental apparatus the deficiency utilizing the bright dark change demonstration self inductance of bulb luminescence not easily to observe, more compensate in traditional instrument can not the problem of direction of current in display circuit.
Background technology
Physics teaching makes students ' understanding self inductance extremely important by lecture experiment, must manage to carry out experiment, can reach the effect of getting twice the result with half the effort like this in teaching.Carrying out self induction demonstration experiment, analyze in earnest the result of two lecture experiments, is the important step breaking through teaching material difficult point, grasp In this Section.About lecture experiment, on teaching material is incandescent lamp, although can illustrate that self-induction energy generation current makes bulb luminous, phenomenon is obvious, can leave deep impression to student, can not clearly illustrate because of self-induction and the feature of generation current.The direction of generation current after particularly power-off can not being described in self-inductance power experiment.So I will replace incandescent lamp with light emitting diode, diode will have the characteristic of one-way conduction, so just can explain because of self-induction and the direction of generation current.Student is made more profoundly to understand self inductance.
Summary of the invention
(1)self-inductance power experiment instrument is the instrument that a kind of class-teaching of teacher does lecture experiment, this instrument is made up of transparent organic glass base plate, support, solenoid, iron core, switch, light emitting diode, wire, rheochord, little lamp socket and power supply etc., its technical characteristic is: plexiglass base plate is screwed on support, all prototype part screws are fixed on transparent machine glass plate by the sign of Fig. 2, also whole instrument rope can be suspended on blackboard, so that teacher's demonstration.(2) shown in Fig. 2, there is an external power interface switch 5 one joint sides, 2,3 two light emitting diode place in circuit directions are contrary, use diode to have the characteristic of one-way conduction, can judge self-inductance power sense of current by the luminous situation of observing diode.
Accompanying drawing illustrates:
Fig. 1. former self-induction experimental demonstration method figure
Fig. 2. instrument close-up view
1, coil and iron core; 2, little lamp socket, two joint location sending and receiving optical diode; 3, switch; 4, wire; 5, switch (side is with external power supply jack); 6, support.
Fig. 3. experimental principle figure
Embodiment: circuit ON, coil and diodes in parallel, direction of current is all from left to right flow back to power cathode.When switch disconnects in a flash, because the electric current by coil reduces suddenly, coil oneself excitation produces the reduction that an induction current hinders original electric current, so induction current and contrary by the electric current of coil, induction current and original electric current are combined the diode flowing through reversal connection, so diode can be once bright, then extinguish.
Claims (1)
1. a self-inductance power experiment instrument, be made up of transparent organic glass base plate, support, solenoid, iron core, switch, light emitting diode, wire, rheochord, little lamp socket and power supply, it is characterized in that, plexiglass base plate is screwed on support, and other all prototype parts are screwed on transparent machine glass plate, also whole instrument rope can be suspended on blackboard, so that teacher's demonstration; Wire is wrapped on iron core and forms telefault; There is an external power interface switch joint side, two light emitting diode place in circuit directions are contrary, telefault and two light emitting diode parallel connections, use diode to have the characteristic of one-way conduction, can judge self-inductance power sense of current by the luminous situation of observing diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539658.5U CN204315146U (en) | 2014-09-19 | 2014-09-19 | Self-inductance power experiment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539658.5U CN204315146U (en) | 2014-09-19 | 2014-09-19 | Self-inductance power experiment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204315146U true CN204315146U (en) | 2015-05-06 |
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ID=53137449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420539658.5U Expired - Fee Related CN204315146U (en) | 2014-09-19 | 2014-09-19 | Self-inductance power experiment instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN204315146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821117A (en) * | 2015-05-28 | 2015-08-05 | 江南大学 | Triangle segment segmentation illusion viewer |
-
2014
- 2014-09-19 CN CN201420539658.5U patent/CN204315146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821117A (en) * | 2015-05-28 | 2015-08-05 | 江南大学 | Triangle segment segmentation illusion viewer |
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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: 20150506 Termination date: 20170919 |
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| CF01 | Termination of patent right due to non-payment of annual fee |