CN202258049U - Self induction exploring device - Google Patents
Self induction exploring device Download PDFInfo
- Publication number
- CN202258049U CN202258049U CN2011201368455U CN201120136845U CN202258049U CN 202258049 U CN202258049 U CN 202258049U CN 2011201368455 U CN2011201368455 U CN 2011201368455U CN 201120136845 U CN201120136845 U CN 201120136845U CN 202258049 U CN202258049 U CN 202258049U
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- self
- induction
- circuit
- coil
- resistance
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Abstract
The utility model provides a self induction exploring device which can be used for conveniently carrying out four self induction exploring tests. Circuit elements are organically combined according to a schematic circuit diagram on a panel so that students can conveniently know about the circuit elements and understand a circuit theory. A circuit is connected in parallel with a resistor-small bulb branch, a coil-small bulb branch and a light-emitting diode-switch-buzzer branch, and then is connected with a low-voltage alternating/direct current power source by a single-pole single-throw switch and an alternating current-direct current conversion switch (or a power supply terminal). After the power source is switched on, the four self induction exploring tests comprising powered-on self-induction, powered-off self-induction, arc phenomenon and inhibition to an alternating current by coils can be conveniently carried out by only switching the power source on and off, and dismounting a small bulb.
Description
Technical field
The utility model relates to and carries out the instrument that self inductance is probed into experiment in a kind of physics teaching in secondary school; Especially the arc phenomenon and the coil that can switch on self inductance, self-inductance power phenomenon easily, are caused by self-induction are probed into experiment to four kinds of self inductances such as inhibition of exchange current, and make demonstration through sound, light.
Background technology
At present, the self inductance teaching is through demonstration energising self inductance and two experiments of self-inductance power phenomenon let the student that self inductance is produced perception respectively.The self inductance of will switching on is tested to separate with the self-inductance power phenomenon and is carried out; Not only troublesome poeration also can make the student produce query: in the experiment of energising self-induction; Produce self-induction during outage? In the self-inductance power experiment; Is there there self-induction during energising? Also experiment of handlebar energising self-induction and self-inductance power are tested the self inductance experiment teaching aid that merges on the market; But on experimental principle, can not embody the scientific research methods of pairing comparision, control variate method well, also the self inductance in the teaching material not tested simultaneously and expand, make the student narrower the understanding of self-induction.
Summary of the invention
Existing self inductance experimental implementation bothers, the demonstration project is few in order to overcome, the deficiency of display effect difference; The utility model provides a kind of self inductance to probe into device; It is consistent with the resistance branch design with path of winding that this probes into device; All the time compare experiment to coil and resistance, embody the science of experiment; Organically combine circuit component and circuit theory diagrams, help students understand circuit theory, understanding circuit component; Apparatus structure is simple, easy to operate, the self-induction of can not only switching on, self-inductance power experiment, and the arc phenomenon and the coil that can also carry out causing because of self-induction are tested the inhibition of exchange current, and experimental phenomena is obvious, interesting.
The utility model solves the technical scheme that its technical matters adopted: on panel; Circuit component combines with circuit theory diagrams; Have in the circuit that coil is connected with miniature bulb, resistance is connected with miniature bulb and light emitting diode, switch three branch roads of connecting with hummer, after three branch road parallel connections again with the single-pole single-throw switch (SPST) series connection on low-tension supply.Resistance in the circuit is fixed resistance, and its resistance is identical with the resistance value of coil, the light emitting diode use of connecting with hummer.Be installed in the front of panel to circuit component, power-line terminal also is installed on the panel.Insert direct supply, closed single-pole single-throw switch (SPST), because the self-induction of coil, the miniature bulb that causes connecting with it is than slow the brightening of miniature bulb of connecting with resistance.When breaking off single-pole single-throw switch (SPST), the direction and the supply voltage of self-induction electromotive force are in the opposite direction, make the light emitting diode conducting, and light emitting diode is once glittering, and hummer is also sounded.Take off in two miniature bulbs respectively, repeat the operation of switching electricity, probing into the self-inductance power phenomenon is because of resistance causes, still causes because of coil.Break off the switch in light emitting diode, the hummer branch road, take off in two miniature bulbs respectively, carry out the operation of switching electricity, observe the arc phenomenon that single-pole single-throw switch (SPST) produces because of self-induction when outage.The incoming transport power supply, closed single-pole single-throw switch (SPST) because of the self-induction of coil, makes that the electric current that passes through coil is very little, the miniature bulb of connecting with coil can not be luminous, and the inhibition of coil to exchange current is described.
The beneficial effect of the utility model is, can carry out the experiment of probing into of four kinds of self inductances, the design concept science, and apparatus structure is simple, easy to operate, and experimental phenomena is obvious, interesting.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is that self inductance is probed into first embodiment of device---the circuit theory diagrams of built-in power type.
Fig. 2 is the panel designs figure that self inductance is probed into first embodiment of device.
Fig. 3 is that self inductance is probed into second embodiment of device---the circuit theory and the panel designs figure of external power supply type.
R is 36 Ω 5W resistance among the figure, and LED is the blue light emitting diode of 5mm, and L is at 2.5 * 4.1cm with the 0.41mm enameled wire
2E sections core on coiling 1600 circles, the coil of direct current resistance 36 Ω, A
1, A
2Be the 2.5V0.3A miniature bulb, H is the HYDZ hummer, S
0, S
2Be toggle switch, S
1Be single-pole single-throw switch (SPST), X, Y are power-line terminal (inserting 12V exchanges or direct supply).
Embodiment
In Fig. 1, the 12V alternating current that B level of transformer provides directly provides AC power on the one hand, passes through full-bridge UR rectification, capacitor C filtering on the other hand, direct supply is provided, through S
0Switching, be respectively self inductance and probe into circuit the AC and DC power supply is provided.
In Fig. 3, X, Y two binding posts are connected with the direct current or the interchange 12V of student's power supply, probe into device for self inductance power supply is provided.
In embodiment illustrated in fig. 2, be plotted in panel designs figure on the panel of 30cm * 40cm, corresponding circuit component (coil connects in use again) is installed in each component symbol position; At the back side of panel, connect each element by circuit diagram; Press the power unit circuit diagram among Fig. 1, be installed in power supply on the base of back side of panel; Panel is fixed on the base.
In the embodiment shown in fig. 3; Be plotted in panel designs figure on the copper clad plate insulating surfaces of 10cm * 10cm,, copper clad plate processed circuit board according to panel circuit figure; Corresponding circuit component (coil is wired to the relevant position) is installed in the component symbol position; Be fixed on copper clad plate on the iron core of coil, become operation and the display panel of probing into device, iron core is a base of probing into device.
Claims (2)
1. a self inductance is probed into device; On panel; Circuit component combines with circuit theory diagrams; It is characterized in that: have in the circuit that coil is connected with miniature bulb, resistance is connected with miniature bulb and light emitting diode, switch three branch roads of connecting with hummer, after three branch road parallel connections again with the single-pole single-throw switch (SPST) series connection on low-tension supply.
2. self inductance according to claim 1 is probed into device, it is characterized in that: resistance is fixed resistance, and its resistance is identical with the resistance value of coil; The light emitting diode use of connecting with hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201368455U CN202258049U (en) | 2011-05-04 | 2011-05-04 | Self induction exploring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201368455U CN202258049U (en) | 2011-05-04 | 2011-05-04 | Self induction exploring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202258049U true CN202258049U (en) | 2012-05-30 |
Family
ID=46119259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201368455U Expired - Fee Related CN202258049U (en) | 2011-05-04 | 2011-05-04 | Self induction exploring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202258049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952545A (en) * | 2017-04-30 | 2017-07-14 | 国网江苏省电力公司职业技能训练基地 | A kind of transformer body-sensing experience system |
-
2011
- 2011-05-04 CN CN2011201368455U patent/CN202258049U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952545A (en) * | 2017-04-30 | 2017-07-14 | 国网江苏省电力公司职业技能训练基地 | A kind of transformer body-sensing experience system |
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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: 20120530 Termination date: 20130504 |