CN202871153U - Joule's law tester - Google Patents
Joule's law tester Download PDFInfo
- Publication number
- CN202871153U CN202871153U CN 201220548885 CN201220548885U CN202871153U CN 202871153 U CN202871153 U CN 202871153U CN 201220548885 CN201220548885 CN 201220548885 CN 201220548885 U CN201220548885 U CN 201220548885U CN 202871153 U CN202871153 U CN 202871153U
- Authority
- CN
- China
- Prior art keywords
- box body
- joule
- base
- pipe
- shaped pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model discloses a Joule's law tester which comprises a base and a vertical plate that is vertically equipped on the base. The base is provided with a transparent box body. The top part of the box body is provided with a cover body which closes the box body. The cover body is provided with two vertical terminals which extend into the box body, and two connecting pipes. An inner resistor which is in conductive connection with the two vertical terminals is hanged in the box body. The vertical plate is provided with a scaled U-shaped pipe which is filled with liquid, wherein one connecting pipe is connected with one port of the U-shaped pipe through one segment of flexible pipe, and the other connecting pipe is provided with a sealing clamp. The Joule's law tester has the following advantages: high visibility, high sensitivity and high intuition. The Joule's law tester can be used for teaching demonstration, and also can be used for group experiment of the student, for observing the relationship between the heat generated by the current through the conductor and the resistor, the relationship between the heat generated by the current through the conductor and the current strength, and the relationship between the heat generated by the current through the conductor and energization time.
Description
Technical field
The utility model relates to a kind of education experiment equipment, relates in particular to a kind of joule law tester.
Background technology
In the middle of compulsory education curricular standard experiment textbook junior physics is given lessons, the teacher many times still only is that explanation is theoretical when the explanation Joule law, and students is listened to such an extent that be confused, without enough understanding, this do not have the uninteresting teaching of experimental apparatus can not play good teaching function.
The utility model content
The utility model provides a kind of joule law tester that cooperates theory teaching in order to solve weak point of the prior art.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: joule law tester, comprise vertically disposed riser on base and the base, base is provided with transparent box body, the box body top is provided with the lid that box body is airtight, lid is provided with two vertical binding posts and two connecting pipes that extend in the box body, be hung with the interior resistor that is connected with two vertical binding post conductions in the box body, riser is provided with the U-shaped pipe with scale, in the U-shaped pipe liquid is housed, one of them connecting pipe is connected by a joint flexible pipe with a port of U-shaped pipe, and another root connecting pipe is provided with clips.
Described riser is provided with two horizontal binding posts, is connected with an external resistance device between two horizontal binding posts.
Described U-shaped pipe is fixedly mounted on the riser by two-tube pressing plate.
Adopt technique scheme, use power supply, switch, wire, reometer and two vertical binding posts to be connected to form the closed-loop path, interior resistor heats up, temperature raises in the box body, volume of air expands, and the air of expansion rises by the liquid that connecting pipe, flexible pipe promote in the U-shaped pipe.The electric current I that reometer tests out is definite value, the resistance of interior resistor is also known, each section period t records the numerical value of a fluid column rising second, according to these numerical value, can calculate heat Q=I2Rt, thereby the demonstration with probe into out Joule law, can compare all lecture experiments of electrical conductor liberated heat relevant with strength of current, resistance and conduction time (Q=I2Rt).And change different power supplys, the size that namely changes electric current I is tested again.
When demonstration, also two horizontal binding posts and two vertical binding post serial or parallel connections can be tested, test out one group of numerical value.These two groups of numerical value are compared, thereby allow the student more profoundly know from experience the intension of Joule law.
It is large to the utlity model has visibility, highly sensitive, intuitive is strong, not only can be used for teaching demonstration, also can be used for the student and carry out grouping experiment, probe into the relation of observing heat that electric current produces by conductor and resistance, probe into the relation of observing heat that electric current produces by conductor and strength of current, probe into the observation electric current by the heat of conductor generation and the relation of conduction time.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, joule law tester of the present utility model, comprise vertically disposed riser 2 on base 1 and the base 1, base 1 is provided with transparent box body 3, box body 3 tops are provided with the lid 4 that box body 3 is airtight, lid 4 is provided with two vertical binding posts 5 and two connecting pipes 6 that extend in the box body 3, be hung with the interior resistor 7 that is connected with two vertical binding post 5 conductions in the box body 3, riser 2 is provided with the U-shaped pipe 8 with scale, in the U-shaped pipe 8 liquid 9 is housed, one of them connecting pipe 6 is connected by a joint flexible pipe 10 with a port of U-shaped pipe 8, and another root connecting pipe 6 is provided with clips 11.Riser 2 is provided with between 12, two horizontal binding posts 12 of two horizontal binding posts and is connected with an external resistance device 13.U-shaped pipe 8 is fixedly mounted on the riser 2 by two-tube pressing plate 14.
Use power supply, switch, wire, reometer and two vertical binding posts 5 to be connected to form the closed-loop path, interior resistor 7 heatings, box body 3 interior temperature raise, and volume of air expands, and the air of expansion rises by the liquid 9 that connecting pipe 6, flexible pipe 10 promote in the U-shaped pipe 8.The electric current I that reometer tests out is definite value, the resistance of interior resistor 7 is also known, each section period t records the numerical value of a fluid column rising second, according to these numerical value, can calculate heat Q=I2Rt, thereby the demonstration with probe into out Joule law, can compare all lecture experiments of electrical conductor liberated heat relevant with strength of current, resistance and conduction time (Q=I2Rt).And change different power supplys, the size that namely changes electric current I is tested again.
When demonstration, also two horizontal binding posts 12 and two vertical binding post 5 serial or parallel connections can be tested, namely interior resistor 7 and external resistance device 13 serial or parallel connections so just test out one group of numerical value again.These two groups of numerical value are compared, thereby allow the student more profoundly know from experience the intension of Joule law.
Claims (3)
1. joule law tester, it is characterized in that: comprise vertically disposed riser on base and the base, base is provided with transparent box body, the box body top is provided with the lid that box body is airtight, lid is provided with two vertical binding posts and two connecting pipes that extend in the box body, be hung with the interior resistor that is connected with two vertical binding post conductions in the box body, riser is provided with the U-shaped pipe with scale, in the U-shaped pipe liquid is housed, one of them connecting pipe is connected by a joint flexible pipe with a port of U-shaped pipe, and another root connecting pipe is provided with clips.
2. joule law tester according to claim 1, it is characterized in that: described riser is provided with two horizontal binding posts, is connected with an external resistance device between two horizontal binding posts.
3. joule law tester according to claim 1 and 2, it is characterized in that: described U-shaped pipe is fixedly mounted on the riser by two-tube pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548885 CN202871153U (en) | 2012-10-25 | 2012-10-25 | Joule's law tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548885 CN202871153U (en) | 2012-10-25 | 2012-10-25 | Joule's law tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871153U true CN202871153U (en) | 2013-04-10 |
Family
ID=48037851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220548885 Expired - Fee Related CN202871153U (en) | 2012-10-25 | 2012-10-25 | Joule's law tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2616443C1 (en) * | 2015-12-03 | 2017-04-14 | Альберт Петрович Ершов | Device for demonstrating joule's law in differential form |
-
2012
- 2012-10-25 CN CN 201220548885 patent/CN202871153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2616443C1 (en) * | 2015-12-03 | 2017-04-14 | Альберт Петрович Ершов | Device for demonstrating joule's law in differential form |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202871153U (en) | Joule's law tester | |
| CN106646166A (en) | Switching device electric arc and electric contact experimental facility and contact resistance measuring method | |
| CN202662201U (en) | Temperature digital display Joule law demonstrator | |
| CN107633749A (en) | A kind of waveform produces and translation circuit experimental provision and application method | |
| CN202649399U (en) | Diode voltage aging test stand | |
| CN202956969U (en) | Comprehensive experimental platform for electric appliance test and control technology | |
| CN202584546U (en) | Automobile electronic fuel injection motor control system experimental board | |
| CN207752677U (en) | A kind of waveform generates and translation circuit experimental provision | |
| CN204463615U (en) | Joule law demonstrator | |
| CN201237849Y (en) | Joule law demonstrator | |
| CN201667265U (en) | Displaying sliding rheostat used for testing | |
| CN202662203U (en) | Temperature digital displaying type Joule law demonstrating device | |
| CN203311706U (en) | Joule 's law experiment apparatus | |
| CN206441424U (en) | A kind of many gear electrical power demonstration instrument for teaching | |
| CN201725471U (en) | Inquiry Lorentz force demonstration device | |
| CN204833844U (en) | Thermistor operating characteristic demonstrates appearance | |
| CN201594340U (en) | Energy-change presenter in physical and chemical changes | |
| CN204204291U (en) | PLC control system experimental provision is used in teaching | |
| CN206471027U (en) | Magnetic is exempted to weld building block system electronic technology fundamental experiment instructional device | |
| CN205984051U (en) | Electric current fuel factor experimental apparatus | |
| CN202711548U (en) | Novel Joule's law experiment demonstrator | |
| CN204479502U (en) | A kind of particle heat transfer experimental provision | |
| CN202662202U (en) | Closed container device of temperature digital display Joule law demonstrator | |
| CN204990932U (en) | Formula constant ohmic resistance teaching aid is inhaled to magnetism | |
| CN204884311U (en) | Inorganic and for assay electrophoresis supervisor utensil |
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: 20130410 Termination date: 20131025 |