CN2126446U - Superconductor zero resitance test demonstrating device - Google Patents
Superconductor zero resitance test demonstrating device Download PDFInfo
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- CN2126446U CN2126446U CN 92226901 CN92226901U CN2126446U CN 2126446 U CN2126446 U CN 2126446U CN 92226901 CN92226901 CN 92226901 CN 92226901 U CN92226901 U CN 92226901U CN 2126446 U CN2126446 U CN 2126446U
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- superconductor
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Abstract
The utility model relates to a superconductor zero resistance test demonstrating device, which belongs to the field of superconducting technology. The device is composed of a dewar barrel, liquid nitrogen, a resistance changing display circuit and a displayer. The device has the advantages of high visualizability and low price, which is especially suitable for universities and secondary schools as a teaching tool to teach the phenomena of resistance change and zero-resistance of superconductive conductors in the critical temperature.
Description
The utility model belongs to the superconductor technology field, is particularly suitable for university, middle school as the educational aid of lecturing superconductor change in resistance and zero-resistance phenomenon when the critical temperature.
Before the utility model, has only the experimental facilities (referring to document: " high-temperature oxide superconductor ", publishing house of Beijing University, 1988, P.26-37, the electrical measurement of high-tc-super conductor body and magnetic measurement) of accurate mensuration superconductor change in resistance curve.These equipment price costlinesses, complexity can not be seen superconductor and test on line thereof intuitively, can not be used for teaching demonstration and student experimenting.In addition, the device of demonstrating its perfect diamagnetism only that occurs in high Tc oxide Ba Y Cu O super conductor research success back is (referring to document: Chinese patent 89206027.1), equally, can not intuitively see change in resistance and the zero-resistance phenomenon of superconductor when critical temperature.
The utility model purpose is to propose a kind of directly perceived, cheap superconductor zero resistance experimental demonstration device.
Accompanying drawings the utility model content.
Fig. 1 is a superconductor zero resistance experimental demonstration device synoptic diagram.
Fig. 2 is the change in resistance display circuit.It is the 4th among Fig. 1,5,6 parts.
Found out that by Fig. 1 this apparatus for demonstrating is by the mutual tube of Du (1); Liquid nitrogen (2); High Tc oxide superconductor sample (3); Four go between A, B, C, D, power circuit (4); Resistance changes amplifying circuit (5) and zero resistance display (6) forms. Du mutually tube (1) adopts transparent material to make, in order to observe. Transparent material is glass, pack in the tube liquid nitrogen (2) and high Tc oxide superconductor sample (3). High Tc oxide superconductor sample (3) surface scribbles polymer protective film, and is anti-in order to solve sample Tide and life problems. Be welded with four lead-in wires on the High Tc oxide superconducting sample (3), two lead-in wires of outermost CD point has connected the power circuit (4) that applies the voltage effect, inner two lead-in wire AB points connect resistance and change amplifying circuit (5), the resistance data that collect after the level Four operational amplifier amplifies, are sent into display (6). Display represents with ohmmeter in Fig. 2. Display can be indicated resistance variations with following four kinds of forms.
1, ohmmeter, the indication resistance changes.
2, pilot lamp, when zero resistance occurring, pilot lamp is bright.
3, hooter, when zero resistance occurring, drone toot.
4, liquid crystal digital sheet replaces ohmmeter.
Experimentation is as follows:
High Tc oxide superconductor is lowered the temperature in liquid nitrogen, and when cooling reached critical temperature, superconductor became superconducting state by normal state, the resistance vanishing, and display action of the present utility model shows zero resistance.
The utility model characteristics are intuitively to make the student can see high Tc oxide superconductor sample change in resistance and zero-resistance phenomenon continuously.This apparatus for demonstrating low price, easy to operate.The usefulness that is fit to university, middle school instruction high Tc oxide superconductor change in resistance is with the scientific and technological achievement inspiration student of up-to-date high Tc oxide superconductor.
Embodiment one
Making the mutual tube of a transparent Du internal diameter with glass material is 20mm, and high 100-120mm uses Y.Ba
2Cu
3O
7Superconductor is made 12mm * 6mm superconduction sheet sample, is welded with four lead-in wires on the sample, is coated with the macromolecule moisture-proof protective film again.Connect according to Fig. 1, Fig. 2.In the circuit amplifying signal from 20 μ V to 1V.Du injects liquid nitrogen in the tube mutually, when high Tc oxide superconductor becomes superconducting state from normal state, uses the display of ohmmeter to be designated as zero.Superconductor is taken out in tube, and superconductor heats up, and returns to normal state, and ohmmeter shows the former resistance value of recovery.
Embodiment two
Except that display (6) adopted pilot lamp, other were identical with example one.When zero resistance occurring, pilot lamp is bright.
Embodiment three
Except that display (6) adopted hooter, other were identical with example one, when zero resistance occurring, drone toot.
Embodiment four
Except that display (6) adopted the liquid crystal digital sheet, other were identical with example one.When zero resistance occurring, liquid crystal digital shows that resistance is zero.
Claims (5)
1, a kind of superconductor zero resistance experimental demonstration device, by container, the superconductor sample, liquid nitrogen and test instrumentation are formed, it is characterized in that Du who is made by transparent material injects liquid nitrogen (2) in the tube (1) mutually, put into the high Tc oxide superconductor sample (3) that is welded with four lead-in wires, outside two lead-in wires CD connect power circuits (4), the zero resistance experimental demonstration device that inner two lead-in wire AB connection change in resistance amplifying circuits (5) and display (6) are formed.
2, device according to claim 1, it is characterized in that Du of making mutually the transparent material of tube (1) be glass, can intuitively see superconductor and each lead-in wire.
3, device according to claim 1 is characterized in that the high Tc oxide superconductor surface is coated with polymer protective film, solves moistureproof problem, and keeps the superconductor original appearance.
4, device according to claim 1 is characterized in that change in resistance amplifying circuit (5) amplifies the resistance data that collect through the level Four computing, send into display (6).
5, device according to claim 1, the display (6) that it is characterized in that intuitively showing zero resistance is ohmmeter, pilot lamp, hooter or liquid crystal digital sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92226901 CN2126446U (en) | 1992-07-10 | 1992-07-10 | Superconductor zero resitance test demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92226901 CN2126446U (en) | 1992-07-10 | 1992-07-10 | Superconductor zero resitance test demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2126446U true CN2126446U (en) | 1992-12-30 |
Family
ID=4968783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92226901 Granted CN2126446U (en) | 1992-07-10 | 1992-07-10 | Superconductor zero resitance test demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2126446U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426812A (en) * | 2011-11-15 | 2012-04-25 | 赵杰 | High-temperature superconducting comprehensive experiment instrument |
| CN102507633A (en) * | 2011-11-18 | 2012-06-20 | 北京鼎臣超导科技有限公司 | Transformation temperature measuring method for high temperature superconducting material based on two-point Delta method |
| CN104614691A (en) * | 2015-01-22 | 2015-05-13 | 杭州精科仪器有限公司 | Experimental device for measuring characteristics of high-temperature superconductor |
| CN110441602A (en) * | 2019-08-05 | 2019-11-12 | 南京尚众微电子科技有限公司 | For characterizing the nematic complex impedance measurement method of iron-based superconductor electronics |
-
1992
- 1992-07-10 CN CN 92226901 patent/CN2126446U/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426812A (en) * | 2011-11-15 | 2012-04-25 | 赵杰 | High-temperature superconducting comprehensive experiment instrument |
| CN102426812B (en) * | 2011-11-15 | 2014-04-16 | 赵杰 | High-temperature superconducting comprehensive experiment instrument |
| CN102507633A (en) * | 2011-11-18 | 2012-06-20 | 北京鼎臣超导科技有限公司 | Transformation temperature measuring method for high temperature superconducting material based on two-point Delta method |
| CN104614691A (en) * | 2015-01-22 | 2015-05-13 | 杭州精科仪器有限公司 | Experimental device for measuring characteristics of high-temperature superconductor |
| CN110441602A (en) * | 2019-08-05 | 2019-11-12 | 南京尚众微电子科技有限公司 | For characterizing the nematic complex impedance measurement method of iron-based superconductor electronics |
| CN110441602B (en) * | 2019-08-05 | 2021-06-18 | 南京尚众微电子科技有限公司 | Complex resistance measurement method for characterizing electronic nematic phase of iron-based superconductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |