CN204990932U - Formula constant ohmic resistance teaching aid is inhaled to magnetism - Google Patents
Formula constant ohmic resistance teaching aid is inhaled to magnetism Download PDFInfo
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- CN204990932U CN204990932U CN201520670236.6U CN201520670236U CN204990932U CN 204990932 U CN204990932 U CN 204990932U CN 201520670236 U CN201520670236 U CN 201520670236U CN 204990932 U CN204990932 U CN 204990932U
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- base plate
- conductive pole
- teaching aid
- screw
- ohmic resistance
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Abstract
The utility model relates to a formula constant ohmic resistance teaching aid is inhaled to magnetism. Including base plate, constant ohmic resistance and a pair of terminal, the utility model discloses install constant ohmic resistance on a base plate to be equipped with a pair of terminal, consequently make things convenient for mr or student to carry out the line, can use repeatedly moreover. External conductor chooses for use and has the clip connecting wire, only needs just can reach the clip clamp on leading electrical pillar the purpose of connection, and it is very convenient to use. In addition, owing to all be equipped with now iron plate in the blackboard of many schools, after the base plate bottom surface was equipped with the permanent magnet, the teaching aid had greatly made things convenient for the observation of student to the experimentation on can directly adsorbing the blackboard, is favorable to improving teaching effects.
Description
Technical field
The utility model relates to a kind of classroom instruction instrument, is specifically related to a kind of magnetic-type fixed value resistance teaching aid.
Background technology
Fixed value resistance is a kind of components and parts more common in circuit, generally comprises the copper pin that columniform resistive element and two ends extend out.In classroom, teacher, when carrying out the electrophysics experimental demonstration of being correlated with, need often to be electrically connected, and fixed value resistance finished product is conveniently installed in the circuit board and designs, and is not suitable for demonstrating.In addition, present teacher is when demonstrating, and generally corresponding experiment teaching aid can only be arranged and line on dais, due to the relation at visual angle, students is difficult to see specific operation process and wiring clearly, affects teaching efficiency.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of fixed value resistance teaching aid of easy to use, good demonstration effect.
For achieving the above object, the utility model provides following technical scheme: a kind of magnetic-type fixed value resistance teaching aid, it is characterized in that comprising substrate, fixed value resistance and a pairs of posts, described substrate is made up of the upper cover plate and base plate being provided with cavity, described binding post comprises conductive pole and lock-screw, described lock-screw comprises insulation button, insulation button is fixed with contact screw, conductive pole upper surface is provided with the screw matched with screw, described lock-screw is threaded with conductive pole, conductive pole lower end is fixed on substrate, partially conductive post is exposed at outside upper surface of base plate, the pin of fixed value resistance is electrically connected with conductive pole, the bottom surface of described substrate is provided with permanent magnet.
Fixed value resistance is installed on one substrate by the utility model, and is provided with a pairs of posts, therefore facilitates teacher or student to carry out line, and can Reusability.Outer lead is selected with clip connecting line, only clip just can need be reached on conductive pole the object of connection, very easy to use.In addition, be all provided with iron plate in the blackboard due to present many schools, after substrate bottom surface is provided with permanent magnet, teaching aid can directly adsorb on blackboard, is very easy to the observation of student to experimentation, is conducive to improving teaching efficiency.
Below in conjunction with drawings and the specific embodiments, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is one of the utility model specific embodiment structural drawing;
Fig. 2 is the utility model specific embodiment structural drawing two.
Embodiment
As shown in Figure 1-2, magnetic-type fixed value resistance teaching aid comprises substrate 1, fixed value resistance 3 and a pairs of posts 2, and fixed value resistance 3 and a pairs of posts 2 are fixed on substrate 1 upper surface, and the pin of fixed value resistance is electrically connected with conductive pole.In this specific embodiment, described substrate 1 is made up of the upper cover plate 101 and base plate 102 being provided with cavity, and substrate 1 adopts isolation material to make, and shape as required, can be generally regular shape.In this specific embodiment, upper cover plate 101 and base plate 102 are rectangular plate-like, and fixed value resistance 3 and a pairs of posts 2 are fixedly located on upper cover plate 101.In this specific embodiment, described binding post comprises conductive pole and lock-screw, described lock-screw comprises insulation button, insulation button is fixed with contact screw, conductive pole upper surface is provided with the screw matched with screw, described lock-screw is threaded with conductive pole, conductive pole lower end is provided with outstanding stud through upper cover plate 101, and be fixed on upper cover plate 101 with clamp nut, the above partially conductive post of stud is exposed at outside upper surface of base plate, the described conductive pole being exposed at part outside upper surface of base plate is preferably hexagon, reliably connects to facilitate clip.Fixed value resistance is arranged on upper cover plate, and the pin at fixed value resistance two ends is electrically connected with described two binding posts respectively through in upper cover plate to back side cavity, and described cavity is by base plate 102 capping.
In order to be adsorbed on blackboard, be preferably provided with permanent magnet 4 in the bottom surface of described substrate 1 and base plate 102, permanent magnet 4 is preferably embedded in the bottom surface of substrate 1.
Claims (2)
1. a magnetic-type fixed value resistance teaching aid, it is characterized in that comprising substrate, fixed value resistance and a pairs of posts, described binding post comprises conductive pole and lock-screw, described lock-screw comprises insulation button, insulation button is fixed with contact screw, conductive pole upper surface is provided with the screw matched with screw, described lock-screw is threaded with conductive pole, conductive pole lower end is fixed on substrate, partially conductive post is exposed at outside upper surface of base plate, the pin of fixed value resistance is electrically connected with conductive pole, and the bottom surface of described substrate is provided with permanent magnet.
2. magnetic-type fixed value resistance teaching aid according to claim 1, it is characterized in that: described substrate is made up of the upper cover plate and base plate being provided with cavity, conductive pole lower end is fixed on described upper cover plate, described in be exposed at outside upper surface of base plate part conductive pole be hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520670236.6U CN204990932U (en) | 2015-08-31 | 2015-08-31 | Formula constant ohmic resistance teaching aid is inhaled to magnetism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520670236.6U CN204990932U (en) | 2015-08-31 | 2015-08-31 | Formula constant ohmic resistance teaching aid is inhaled to magnetism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204990932U true CN204990932U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520670236.6U Active CN204990932U (en) | 2015-08-31 | 2015-08-31 | Formula constant ohmic resistance teaching aid is inhaled to magnetism |
Country Status (1)
| Country | Link |
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| CN (1) | CN204990932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591068A (en) * | 2016-07-06 | 2018-01-16 | 上海数好数字信息科技有限公司 | Circuit for teaching experiment builds module |
-
2015
- 2015-08-31 CN CN201520670236.6U patent/CN204990932U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591068A (en) * | 2016-07-06 | 2018-01-16 | 上海数好数字信息科技有限公司 | Circuit for teaching experiment builds module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |