CN202816230U - Demonstration instrument of magnetic suspension object in variable height - Google Patents
Demonstration instrument of magnetic suspension object in variable height Download PDFInfo
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- CN202816230U CN202816230U CN 201220318138 CN201220318138U CN202816230U CN 202816230 U CN202816230 U CN 202816230U CN 201220318138 CN201220318138 CN 201220318138 CN 201220318138 U CN201220318138 U CN 201220318138U CN 202816230 U CN202816230 U CN 202816230U
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- magnetic levitation
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Abstract
Provided is a demonstration instrument of a magnetic suspension object in variable height. The demonstration instrument includes a base and an upper platform connected with the base via a support, the upper platform and the base are arranged at the same side of the support, the direction of the upper platform, facing toward the base, is provided with a hollow coil, a Hall element OH3503 is arranged on the external side wall of the hollow coil, a work power supply, a transformer, a diode, a capacitor, a voltage-stablizer, a voltage comparater, and a triode which are successively connected are arranged in the base, the colelctor electrode of the triode is connected with the hollow coil, the upper platform and the base are provided with a demonstration object, the demonstration object is fixedly connected with a permanent magnet, the work power supply is connected with a duplex potentiometer, and a high-response amplifier is connected among the duplex potentiometer, the voltage comparater, and the Hall element OH3503. The demonstration instrument provided can demonstrate a magnetic suspension tellurion, a magnetic suspension airplane, a doll or other various objects floating in the air; the demonstration instrument provided has the properties of agility, diversity, simple structure, convenient use, and good teaching demonstration effect; in addition, some parts of the instrument are made from waste materials, thereby saving the cost.
Description
Technical field
The utility model relates to a kind of demonstration instrument for physical phenomenon, is specifically related to the variable demonstrator of a kind of magnetic levitation object height degree.
Background technology
Utilize the controllability of electromagnet magnetic intensity to realize object is suspended in the air, make us pleasantly surprised, excite students ' interest of study, excite the student to seek wherein secret mood.Yet present magnetic suspension demonstrating device demonstration levitated object height is certain, does not have the dirigibility effect not ideal enough.
Summary of the invention
The purpose of this utility model is to provide a kind of magnetic levitation object height degree variable demonstrator, and it is the variable demonstrator of magnetic levitation object height degree, is the further innovation to magnetic levitation (multiple object) demonstrator; The height of the suspension of this magentic suspension demonstrating instrument demonstration can change by the worktable upper knob, and it is simple in structure, and is easy to use, and teaching demonstration is effective.
The technical solution of the utility model is: the variable demonstrator of a kind of magnetic levitation object height degree, comprise base, the upper mounting plate that is connected by support with base, described upper mounting plate and base are positioned at the homonymy of support, described upper mounting plate is provided with air core coil towards the base direction, is provided with Hall element OH3503 on the lateral wall of described air core coil; Be provided with the working power, transformer, diode, capacitor, voltage stabilizer, voltage comparator and the triode that connect successively in the described base, the collector of described triode is connected with air core coil; Described upper mounting plate and base are provided with the demonstration thing, and described demonstration thing is fixed with permanent magnet, it is characterized in that: described working power also connects duplex potentiometer, connect highly sensitive amplifier between described duplex potentiometer, voltage comparator and the Hall element OH3503.
Above-mentioned demonstration thing such as comprises at heavy magnetic suspension tellurian, magnetic levitation aircraft and the kid.
Above-mentioned working power is the 50W power supply, transformer is the transformer of output 17v voltage, capacitor is the 4700UF electrolytic condenser, by voltage stabilizer regulate to supply with triode, coil voltage is 12V, regulate supply Hall element OH3503 by voltage stabilizer, described voltage comparator voltage is the LM358 voltage comparator.
Above-mentioned air core coil is to make around 800 circles on the skeleton of the long 40mm of diameter 20mm with 0.43 enameled wire.
Above-mentioned permanent magnet is the circular magnet of diameter 20mm, thick 5mm.
[0009]The utility model increase on former patented claim " one kind of multiple object magnetic suspension principle demonstrators " basis can change the magnetic field power of electromagnet, select thicker enameled wire coiling, it is adjustable to increase output power of power supply and VD, improve the sensitivity of accepting of Hall element, increase the amplifier of highly sensitive enlarging function.Totally say: the electromagnet magnetic field intensity of upper mounting plate and the output sensitivity of Hall element can be regulated by duplex potentiometer, thereby reach by the height change of suspension.
Description of drawings:
Fig. 1 is the utility model structure principle chart;
Fig. 2 is the utility model control circuit connection diagram.
Embodiment
Referring to Fig. 1 and Fig. 2, manufacturing process: the enameled wire with 0.43 encloses into air core coil around 800 on the skeleton of the long 40mm of diameter 20mm, Hall element OH3503 be fixed on coil lateral wall on, permanent magnet is selected the circular magnet of the thick 5mm of diameter 20mm, the permanent magnet of selecting is sticked on the object of suspension, air core coil is fixed on the middle position of upper mounting plate, working power adopts the two 17v transformers of 50W output voltage, the diode full-wave rectification, the 4700UF electrochemical capacitor carries out filtering, by the 12V voltage stabilizing to voltage comparator, power amplifier (triode amplification switch) and air core coil power supply, the 5V voltage stabilizing is powered to Hall element OH3503.The amplifier of power supply and making and triode amplifier section component positioning in base.
Principle of work: the interaction between the ferromagnetic controllability of this utilization of works electromagnetism and permanent magnetism, realize the object skyborne function that suspends.When air core coil passed into direct current, to be that N is extremely following be the S utmost point in the polarity of the magnetic field top of its generation.The permanent magnet that the object that is suspended is pasted above also has magnetic field to work as when the top N of being is extremely following to be the S utmost point, demonstration thing (magnet in the above) level is made progress slowly near the air core coil bottom, they just have mutual attractive force (there is a natural attraction between the sexes), the demonstration thing that is suspended is gradually upwards near air core coil, the Hall element OH3503 that is in the air core coil side slowly increases the voltage exported along with rising owing to sensing magnetic field, when the close air core coil certain distance of demonstration thing, the high voltage of Hall element OH3503 output is not worked LM358 amplifier comparer output LOW voltage triode power amplifier switch, the air core coil outage, the magnetic field of air core coil disappears and is demonstrated thing, Hall element OH3503 because of the voltage exported of field weakening of induction along with reduction, the low-voltage of exporting as Hall element OH3503 makes the work of LM358 amplifier comparer output HIGH voltage triode power amplifier switch, the air core coil energising, air core coil has generation magnetic field, have and upwards attract demonstration thing, work that like this can be reciprocal.Because the resolution of LM358 voltage comparator is high especially, its positive-negative input end makes air core coil energising and outage as long as slightly variant output terminal will be high voltage or low-voltage, the result just forms suspension and does not namely increase at a certain height and also be unable to come down, and skyborne phenomenon can only suspend.
Use: the magnet of selecting is sticked on the different objects, as long as the suitable object that all can make of weight is suspended in the air.
Claims (5)
1. variable demonstrator of magnetic levitation object height degree, comprise base, with the upper mounting plate that base is connected by support, described upper mounting plate and base are positioned at the homonymy of support, described upper mounting plate is provided with air core coil towards the base direction, is provided with Hall element OH3503 on the lateral wall of described air core coil; Be provided with the working power, transformer, diode, capacitor, voltage stabilizer, voltage comparator and the triode that connect successively in the described base, the collector of described triode is connected with air core coil; Described upper mounting plate and base are provided with the demonstration thing, and described demonstration thing is fixed with permanent magnet, it is characterized in that: described working power also connects duplex potentiometer, connect highly sensitive amplifier between described duplex potentiometer, voltage comparator and the Hall element OH3503.
2. the variable demonstrator of described magnetic levitation object height degree according to claim 1 is characterized in that: described demonstration thing such as comprises at heavy magnetic suspension tellurian, magnetic levitation aircraft and the kid.
3. the variable demonstrator of described magnetic levitation object height degree according to claim 1 and 2, it is characterized in that: described working power is the 50W power supply, transformer is the transformer of output 17v voltage, capacitor is the 4700UF electrolytic condenser, by voltage stabilizer regulate to supply with triode, coil voltage is 12V, regulate supply Hall element OH3503 by voltage stabilizer, described voltage comparator voltage is the LM358 voltage comparator.
4. the variable demonstrator of described magnetic levitation object height degree according to claim 3, it is characterized in that: described air core coil is to make around 800 circles on the skeleton of the long 40mm of diameter 20mm with 0.43 enameled wire.
5. the variable demonstrator of described magnetic levitation object height degree according to claim 4, it is characterized in that: described permanent magnet is the circular magnet of diameter 20mm, thick 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318138 CN202816230U (en) | 2012-07-03 | 2012-07-03 | Demonstration instrument of magnetic suspension object in variable height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318138 CN202816230U (en) | 2012-07-03 | 2012-07-03 | Demonstration instrument of magnetic suspension object in variable height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202816230U true CN202816230U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220318138 Expired - Fee Related CN202816230U (en) | 2012-07-03 | 2012-07-03 | Demonstration instrument of magnetic suspension object in variable height |
Country Status (1)
| Country | Link |
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| CN (1) | CN202816230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489357A (en) * | 2013-09-18 | 2014-01-01 | 北京天路时代电气设备有限责任公司 | Control circuit of magnetic suspension experimental setup |
| CN107564386A (en) * | 2017-10-16 | 2018-01-09 | 牡丹江师范学院 | One kind is used to demonstrate maglev teaching aid |
-
2012
- 2012-07-03 CN CN 201220318138 patent/CN202816230U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489357A (en) * | 2013-09-18 | 2014-01-01 | 北京天路时代电气设备有限责任公司 | Control circuit of magnetic suspension experimental setup |
| CN103489357B (en) * | 2013-09-18 | 2015-12-23 | 北京天路时代电气设备有限责任公司 | The control circuit of magnetic suspension experiment device |
| CN107564386A (en) * | 2017-10-16 | 2018-01-09 | 牡丹江师范学院 | One kind is used to demonstrate maglev teaching aid |
| CN107564386B (en) * | 2017-10-16 | 2019-07-23 | 牡丹江师范学院 | One kind is for demonstrating maglev teaching aid |
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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: 20130320 Termination date: 20130703 |