CN205376227U - Resistance box - Google Patents
Resistance box Download PDFInfo
- Publication number
- CN205376227U CN205376227U CN201620171414.5U CN201620171414U CN205376227U CN 205376227 U CN205376227 U CN 205376227U CN 201620171414 U CN201620171414 U CN 201620171414U CN 205376227 U CN205376227 U CN 205376227U
- Authority
- CN
- China
- Prior art keywords
- resistance
- resistance wire
- radiator fan
- wire
- grid
- 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
Landscapes
- Details Of Resistors (AREA)
Abstract
The utility model relates to a resistance box, including resistor housing, the inside inside that is equipped with of resistor housing is equipped with first resistance wire, second resistance wire, first resistance wire, second resistance wire are the U -shaped and overlap the column structure, first resistance wire, second resistance wire both ends all are equipped with the generic interface, the inside heat dissipating cavity that is equipped with of resistor housing one end, the inside radiator fan that is equipped with of heat dissipating cavity, be equipped with the grid that admits air on one side of the last radiator fan of lieing in of resistor housing admits air, be equipped with the grid of giving vent to anger on the one side of giving vent to anger. The utility model discloses a set up first resistance wire, second resistance wire, this all resistance installation with different resistances together, the going on of the too many and influence experiment of the resistor factor volume of having avoided different resistances, radiator fan can dispel the heat to first resistance wire, second resistance wire simultaneously, this with avoided generating heat to the influence of experimental result, guaranteed the accuracy of experiment.
Description
Technical field
This utility model relates to electrical and electronic technology field, particularly relates to a kind of resistance box.
Background technology
Resistor is typically directly called resistance in daily life.Being a current limiting element, connect by resistance after in circuit, the resistance of resistor is fixing to be usually two pins, and it can limit the size of current by its institute's chord road.Resistance is unalterable is called fixed resister.What resistance was variable is called potentiometer or rheostat.Desirable resistor is linear, is namely directly proportional to additional instantaneous voltage by the transient current of resistor.Rheostat for dividing potential drop.On exposed resistive element, pressed against one or two and can move hard contact.Contact position determines the resistance between resistive element either end and contact.
Terminal voltage and electric current have determines functional relationship, embodies electric energy and is converted into the two-terminal device of other form abilities, represents with letter r, and unit is ohm Ω.Practical devices is bulb such as, heating wire, and resistor etc. is all represented by resistor element.
Resistance is the physical quantity describing conductor electric conductivity, represents with R.Resistance is by the voltage U at conductor two ends and is defined by the ratio of the electric current I of conductor, i.e. R=U/I.So, when voltage one timing at conductor two ends, resistance is bigger, and the electric current passed through is just less；Otherwise, resistance is less, and the electric current passed through is just bigger.Therefore, the size of resistance can be used to the power weighing conductor to electric current inhibition, i.e. the quality of electric conductivity.The value of resistance is relevant with factors such as the material of conductor, shape, volume and surroundings.
Resistor used in teaching process is only a kind of resistance generally, so can cause that number of resistors is more, the carrying out of impact experiment, and resistance in use easily generates heat simultaneously, so the accuracy of impact experiment.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of resistance box.
This utility model is to be achieved through the following technical solutions:
A kind of resistance box, including resistance shell, described resistance enclosure is provided with the first resistance wire, the second resistance wire, described first resistance wire, the second resistance wire take the shape of the letter U and weigh stacked configuration, described first resistance wire, the second resistance wire two ends are equipped with general-purpose interface, are provided with heat radiation cavity inside described resistance shell one end, and described heat radiation cavity inside is provided with radiator fan, being positioned at radiator fan air inlet side on described resistance shell and be provided with air inlet grid, side of giving vent to anger is provided with grid of giving vent to anger.
As optimal technical scheme of the present utility model, described first resistance wire, the second resistance wire resistance different.
It is arranged vertically as optimal technical scheme of the present utility model, described radiator fan air-out direction and the first resistance wire, the second resistance wire.
As optimal technical scheme of the present utility model, inside described air inlet grid, grid of giving vent to anger, it is provided with some pieces of Turbogrid plates.
Compared with prior art, the beneficial effects of the utility model are: this utility model simple in construction, reasonable in design, this utility model is by arranging the first resistance wire, the second resistance wire, this all resistance by different resistances is installed together, it is to avoid the resistor of different resistances affects the carrying out of experiment because quantity is too many, and the first resistance wire, the second resistance wire can be dispelled the heat by radiator fan simultaneously, this with avoid the heating impact on experimental result, it is ensured that the accuracy of experiment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. resistance shell；101. heat radiation cavity；2. the first resistance silk；3. the first resistance silk；4. general-purpose interface；5. air inlet grid；6. radiator fan；7. give vent to anger grid.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
Referring to Fig. 1, Fig. 1 is structural representation of the present utility model.
A kind of resistance box, including resistance shell 1, described resistance shell 1 is internal is provided with first resistance wire the 2, second resistance wire 3, and the resistance of wherein said first resistance wire the 2, second resistance wire 3 is different.Described first resistance wire the 2, second resistance wire 3 takes the shape of the letter U and weighs stacked configuration, so can effectively improve the resistance of resistance wire.Described first resistance wire the 2, second resistance wire 3 two ends are equipped with general-purpose interface 4, this all resistance by different resistances is installed together, it is to avoid the resistor of different resistances affects the carrying out of experiment because quantity is too many.
Heat radiation cavity 101 it is provided with inside described resistance shell 1 one end, described heat radiation cavity 101 is internal is provided with radiator fan 6, wherein said radiator fan 6 air-out direction and first resistance wire the 2, second resistance wire 3 are arranged vertically, the heat of first resistance wire the 2, second resistance wire 3 is directly discharged by the hot blast that such radiator fan 6 produces, it is achieved effectively lower the temperature.Being positioned at radiator fan 6 air inlet side on described resistance shell 1 and be provided with air inlet grid 5, side of giving vent to anger is provided with grid 7 of giving vent to anger, and wherein said air inlet grid 5, grid 7 inside of giving vent to anger are provided with some pieces of Turbogrid plates.First resistance wire the 2, second resistance wire 3 can be dispelled the heat by such radiator fan 6, this with avoid the heating impact on experimental result, it is ensured that the accuracy of experiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
Claims (4)
1. a resistance box, including resistance shell (1), it is characterized in that: described resistance shell (1) is internal is provided with the first resistance wire (2), second resistance wire (3), described first resistance wire (2), second resistance wire (3) takes the shape of the letter U and weighs stacked configuration, described first resistance wire (2), second resistance wire (3) two ends are equipped with general-purpose interface (4), heat radiation cavity (101) it is provided with inside described resistance shell (1) one end, described heat radiation cavity (101) is internal is provided with radiator fan (6), described resistance shell (1) is positioned at radiator fan (6) air inlet side and is provided with air inlet grid (5), side of giving vent to anger is provided with grid of giving vent to anger (7).
2. a kind of resistance box according to claim 1, it is characterised in that: described first resistance wire (2), the second resistance wire (3) resistance different.
3. a kind of resistance box according to claim 1, it is characterised in that: described radiator fan (6) air-out direction and the first resistance wire (2), the second resistance wire (3) are arranged vertically.
4. a kind of resistance box according to claim 1, it is characterised in that: described air inlet grid (5), grid of giving vent to anger (7) inside are provided with some pieces of Turbogrid plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620171414.5U CN205376227U (en) | 2016-03-06 | 2016-03-06 | Resistance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620171414.5U CN205376227U (en) | 2016-03-06 | 2016-03-06 | Resistance box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205376227U true CN205376227U (en) | 2016-07-06 |
Family
ID=56265069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620171414.5U Expired - Fee Related CN205376227U (en) | 2016-03-06 | 2016-03-06 | Resistance box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205376227U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053818A (en) * | 2020-08-31 | 2020-12-08 | 安徽科比电子科技有限公司 | High-power resistor of high-efficient heat dissipation groined type |
| CN112201420A (en) * | 2020-09-25 | 2021-01-08 | 安徽德尔电气集团有限公司 | Resistor with good moisture-proof heat dissipation performance |
-
2016
- 2016-03-06 CN CN201620171414.5U patent/CN205376227U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053818A (en) * | 2020-08-31 | 2020-12-08 | 安徽科比电子科技有限公司 | High-power resistor of high-efficient heat dissipation groined type |
| CN112201420A (en) * | 2020-09-25 | 2021-01-08 | 安徽德尔电气集团有限公司 | Resistor with good moisture-proof heat dissipation performance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205376227U (en) | Resistance box | |
| CN203167513U (en) | Novel digital current transformer secondary overvoltage protection device | |
| CN202661615U (en) | Electronic load machine | |
| CN205384915U (en) | Resistor | |
| CN206148195U (en) | Circuit is resistance for board | |
| CN205564441U (en) | Resistance for experiments | |
| CN204834227U (en) | Electrical resistance device of teaching usefulness | |
| CN205487599U (en) | Controlling resistor | |
| CN204926936U (en) | Resistance box | |
| CN204991325U (en) | Resistor is used in teaching | |
| CN204377168U (en) | Safety environment protecting energy saving electric heating system | |
| CN204244489U (en) | A kind of novel low-voltage PTC thermistor safe heating device | |
| CN207705593U (en) | A kind of anti-condensation heating device for power distribution cabinet | |
| CN205564440U (en) | Controlling resistor | |
| CN204695892U (en) | A kind of AC resistance device structure | |
| CN204834228U (en) | Electrical resistance device | |
| CN205564435U (en) | Transverse spring formula resistor | |
| CN106356165A (en) | Resistor for circuit board | |
| CN204215831U (en) | A kind of equalizing resistance for li-ion cell protection device | |
| CN202602920U (en) | A temperature-controlled heater | |
| CN207474182U (en) | A kind of thick-film heating resistor | |
| CN210073505U (en) | High temperature resistant nickel-chromium structure of high-power resistance of chip formula | |
| CN210091839U (en) | High-resistance non-inductive resistor | |
| CN211479468U (en) | Experimental instrument device for displaying current heat effect | |
| CN215527403U (en) | Iron core mutual inductor with combined novel structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chai Longbao Inventor before: Zheng Zunyuan Inventor before: Zhou Dong |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170828 Address after: 332725, Jiangxi Province, Pengze County, Jiujiang Huang Ling Baiyun Village fire bag Patentee after: Jiangxi Longyang science and Technology Co Ltd Address before: 311800 Zhejiang city in Shaoxing Province town of Zhuji City Shop No. 37 Lake Village Patentee before: Zhou Dong |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20190306 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |