CN201667265U - Displaying sliding rheostat used for testing - Google Patents
Displaying sliding rheostat used for testing Download PDFInfo
- Publication number
- CN201667265U CN201667265U CN2010201339087U CN201020133908U CN201667265U CN 201667265 U CN201667265 U CN 201667265U CN 2010201339087 U CN2010201339087 U CN 2010201339087U CN 201020133908 U CN201020133908 U CN 201020133908U CN 201667265 U CN201667265 U CN 201667265U
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- CN
- China
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- guide rod
- metal guide
- display lamp
- lamp group
- cylindrical shell
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- Expired - Fee Related
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Abstract
The utility model provides a displaying sliding rheostat used for testing, which comprises a bracket. A tube body with a wiring column is arranged on the bracket; a metal guide rod with a wiring column is located above the tube body and is provided with a sliding block with a metal contact sheet. The displaying sliding rheostat is characterized in that: the tube body is provided with a fixed resistor; the tube body and the metal guide rod are respectively provided with a displaying lamp set electrically connected with a power supply; the fixed resistor is electrically connected with the metal guide rod through the sliding block and the metal contact sheet thereon; current on the metal guide rod is led to the fixed resistor through the sliding block and the metal contact sheet thereon, thereby realizing electrical characteristics that the current in a loading circuit changes along with the changing of the resistance value; meanwhile, the corresponding displaying lamp set is lightened through the moving of the sliding block, so as to display changes of the resistance value. The simple, direct-viewing instrument with obvious effect can solve teaching difficulties that it is not easy to observe and understand the sliding rheostat, and has obvious displaying effect.
Description
Technical field
The utility model relates to a kind of slide rheostat, and particularly a kind of experiment slide rheostat with Presentation Function belongs to the teaching aid technical field.
Technical background
Slide rheostat is a kind of electricity demonstration instrument that is widely used in junior middle school's teaching phase, can further promote the ABC of resistance by it, can allow the student understand electric current, voltage, resistance three's relation easily simultaneously.Yet because the existing glide rheostat can not carry out lecture experiment intuitively, teachers will spend a large amount of time the basic principle and the method for operation of slide rheostat are explained, and also will allow the student practise.Even like this, the principle of slide rheostat still seems too difficult with complicated operations for the student who just contacts electricity, exceeded present stage student's cognitive ability.Especially six kinds of connections of four leg of slide rheostat form huge obstruction to student's cognition.Is students always needs thinking: in four kinds of correct connections, which section resistance only the part of using in the actual place in circuit actually? does electric current flow through which section of resistance actually? and the student who does not understand can only grasp by memorize mechanicalling mode.In examine in the important like this examination, have a lot of students to cause and lose scores owing to being unfamiliar with slide rheostat principle and use.Therefore be necessary prior art is improved.
Summary of the invention
Not directly perceived for overcoming the experiment, the demonstration that have slide rheostat now and exist, deficiencies such as student's indigestion, the utility model provides a kind of experiment with showing slide rheostat.Existingly can carry out the effect of teaching demonstration intuitively, itself also be a slide rheostat simultaneously, has both to show and the function of operation.
The utility model is finished by following technical proposal: a kind of experiment is with showing slide rheostat, comprise support, be located at the cylindrical shell of band binding post on the support its, its that is positioned at cylindrical shell top gone up the metal guide rod of being with binding post, on metal guide rod, be provided with the slide block of band Metal Contact sheet, it is characterized in that cylindrical shell is provided with fixed value resistance, be respectively equipped with the display lamp group that is electrically connected with power supply on cylindrical shell and the metal guide rod, fixed value resistance and metal guide rod by slide block and on the Metal Contact sheet be electrically connected, thereby the electrical characteristics that electric current changes with the change of resistance value in the realization load circuit, by the mobile of slide block corresponding display lamp group is lighted simultaneously, to show the change of resistance value.
Described display lamp group is by hand switch or be arranged on switch activated or electronic switch and display lamp group power connection on the slide block.
Described metal guide rod is provided with groove, and the display lamp group that is made of light-emitting diode is set in the groove.
Described cylindrical shell is made as the hollow insulating cylinder body, and the display lamp group on it is made of light-emitting diode.
The utlity model has following advantage and effect: adopt such scheme, or by slide block and on the Metal Contact sheet electric current on the metal guide rod is introduced fixed value resistance, thereby the electrical characteristics that electric current changes with the change of resistance value in the realization load circuit, by the mobile of slide block corresponding display lamp group is lighted simultaneously, demonstrated the change of resistance value.The utility model is only used simple, directly perceived, an outstanding effect instrument, just can solve slide rheostat and be difficult for observation, elusive teaching difficulty, and display effect is very obvious, thereby reach the purpose of teaching, and can excite the learning interest of students and the curiosity of Scientific exploration secret, in addition, the utlity model has advantages such as simple to operate, safe and reliable.Be a desirable electricity demonstration teaching aid in fact.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the load circuit figure of the utility model;
Fig. 3 is the display circuit figure of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further, is not limited thereto but hold within the utility model.
The experiment that the utility model provides is with showing slide rheostat, comprise support 1, be located at the cylindrical shell 2 of band binding post 10 on the support 1 its, cylindrical shell 2 is the hollow insulating cylinder body, be positioned at the metal guide rod 3 of band binding post 4 on its of cylindrical shell 2 tops, on metal guide rod 3, be provided with the slide block 6 of band Metal Contact sheet 7, cylindrical shell 2 is provided with fixed value resistance 8, be respectively equipped with the display lamp group 5 and 9 that is electrically connected with power supply on cylindrical shell 2 and the metal guide rod 3, wherein, display lamp group 5 is formed the lamp band by light-emitting diode, and is located in the groove of metal guide rod 3, display lamp group 9 is made of light-emitting diode, as Fig. 1, fixed value resistance 8 and metal guide rod 3 by slide block 6 and on Metal Contact sheet 7 be electrically connected, to power to load circuit, thereby the electrical characteristics that electric current changes with the change of resistance value in the realization load circuit, as Fig. 2, display lamp group 5 and 9 is by switch activated 10 on the slide block 6 and display lamp group power connection, by the mobile of slide block corresponding display lamp is lighted, to show the change of resistance value, as Fig. 3.
Claims (4)
1. an experiment is with showing slide rheostat, comprise support, be located at the cylindrical shell of band binding post on the support its, its that is positioned at cylindrical shell top gone up the metal guide rod of being with binding post, on metal guide rod, be provided with the slide block of band Metal Contact sheet, it is characterized in that cylindrical shell is provided with fixed value resistance, be respectively equipped with the display lamp group that is electrically connected with power supply on cylindrical shell and the metal guide rod, fixed value resistance and metal guide rod by slide block and on the Metal Contact sheet be electrically connected.
2. experiment according to claim 1 is with showing slide rheostat, it is characterized in that described display lamp group is by hand switch or be arranged on the slide block switch activated or electronic switch and link to each other with display lamp group power supply.
3. experiment according to claim 1 is characterized in that with showing slide rheostat described metal guide rod is provided with groove, and the display lamp group that is made of light-emitting diode is set in the groove.
4. experiment according to claim 1 is characterized in that with showing slide rheostat described cylindrical shell is made as the hollow insulating cylinder body, and the display lamp group on it is made of light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201339087U CN201667265U (en) | 2010-03-18 | 2010-03-18 | Displaying sliding rheostat used for testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201339087U CN201667265U (en) | 2010-03-18 | 2010-03-18 | Displaying sliding rheostat used for testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201667265U true CN201667265U (en) | 2010-12-08 |
Family
ID=43268227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201339087U Expired - Fee Related CN201667265U (en) | 2010-03-18 | 2010-03-18 | Displaying sliding rheostat used for testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201667265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014194483A1 (en) * | 2013-06-05 | 2014-12-11 | 吉瑞高新科技股份有限公司 | Electronic cigarette with brightness-adjustable head lamp and brightness adjustment method therefor |
| CN112228502A (en) * | 2020-10-15 | 2021-01-15 | 哈尔滨工程大学 | Intelligent variable damping vibration suppression and power generation recovery device |
-
2010
- 2010-03-18 CN CN2010201339087U patent/CN201667265U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014194483A1 (en) * | 2013-06-05 | 2014-12-11 | 吉瑞高新科技股份有限公司 | Electronic cigarette with brightness-adjustable head lamp and brightness adjustment method therefor |
| US9700074B2 (en) | 2013-06-05 | 2017-07-11 | Huizhou Kimree Technology Co., Ltd. Shenzhen Branch | Electronic cigarette with brightness-adjustable head lamp and brightness adjustment method therefor |
| CN112228502A (en) * | 2020-10-15 | 2021-01-15 | 哈尔滨工程大学 | Intelligent variable damping vibration suppression and power generation recovery device |
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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: 20101208 Termination date: 20110318 |