CN200990162Y - Temperature and electric resistance relation demonstration apparatus - Google Patents
Temperature and electric resistance relation demonstration apparatus Download PDFInfo
- Publication number
- CN200990162Y CN200990162Y CN 200620094302 CN200620094302U CN200990162Y CN 200990162 Y CN200990162 Y CN 200990162Y CN 200620094302 CN200620094302 CN 200620094302 CN 200620094302 U CN200620094302 U CN 200620094302U CN 200990162 Y CN200990162 Y CN 200990162Y
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- box body
- temperature
- filament
- utility
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Abstract
The utility model relates to a resistance relation demonstrating device, comprising a box body, the utility model is characterized in that the box body is provided with an ohm gauge, a vehicle high beam light and a vehicle low beam light. The box body is internally provided with a power battery and a connecting lead; and a switch is arranged on the box body. Lightening one filament of the high beam and the low beam to heat the other filament, along the increment of the temperature of the heated filament, the relation between the temperature and the resistance can be demonstrated from the change of the pointer on the ohm gauge. The utility model has simple structure, and is also convenient to use; as the heating unit and the heated unit are in the same system, the demonstrating effect is extremely obvious.
Description
Technical field
The utility model relates to a kind of teaching demonstration device, particularly relates to a kind of temperature and resistance relation demonstration device.
Background technology
In electricity experiment, each experiment all needs a lot of equipment to demonstrate, and could allow more directly perceived, the more lively understanding of student like this.The apparatus for demonstrating demonstration effect of temperature and resistance relation is directly perceived inadequately in the existing Experiments of Electricity, is not easy to understand.
Summary of the invention
It is a kind of both directly perceived that the purpose of this utility model is to provide, and is convenient to temperature and the resistance relation demonstration device understood again.
The technical scheme that adopts:
Temperature and resistance relation demonstration device comprise a box body, it is characterized in that being equiped with on the described box body ohmmeter and an automobile dimming-distance light etc.Power-supply battery is housed in the box body and connects lead, switch is installed on the box body.A filament of lighting in distance light and the dipped beam heats another filament, and along with the rising that is heated filament temperature, the pointer from ohmmeter changes the relation that just can demonstrate out temperature and resistance.
The utility model is not only simple in structure but also easy to use, because heater and heated body are in a system, Gu and the demonstration effect is very obvious.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
See also Fig. 1, the apparatus for demonstrating of temperature of the present utility model and resistance relation, comprise a square box body 1, be equiped with an ohmmeter 2 in the square box body 1, offer an opening 3 that adapts with the table of ohmmeter 2 screen size on the square box body 1, the table screen of ohmmeter 2 is positioned at opening 3 places, be equiped with an automobile long-and-short distant light 4 on square box body 1 front panel, be equiped with the both positive and negative polarity battery 5 of power supply 5 in the square box body, headlight high beam filament 6 in the far and near light etc. 4 is connected with two binding posts on the ohmmeter 2 by lead through switch 7 is connected the dip filament 6 in the long-and-short distant light 4 with power-supply battery two ends by lead, and switch 7 is installed on the square box body 1.
Claims (1)
1, temperature and resistance relation demonstration device, comprise a box body, it is characterized in that being equiped with on the described box body ohmmeter and an automobile long-and-short distant light, power-supply battery is housed in the box body and connects lead, switch is installed on the box body, a filament of lighting in distance light and the dipped beam heats another filament, and along with the rising that is heated filament temperature, the pointer from ohmmeter changes the relation that just can demonstrate out temperature and resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620094302 CN200990162Y (en) | 2006-11-22 | 2006-11-22 | Temperature and electric resistance relation demonstration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620094302 CN200990162Y (en) | 2006-11-22 | 2006-11-22 | Temperature and electric resistance relation demonstration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200990162Y true CN200990162Y (en) | 2007-12-12 |
Family
ID=38941195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620094302 Expired - Fee Related CN200990162Y (en) | 2006-11-22 | 2006-11-22 | Temperature and electric resistance relation demonstration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200990162Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751716A (en) * | 2015-03-27 | 2015-07-01 | 王浩聿 | Ohm law digital demonstrating instrument |
-
2006
- 2006-11-22 CN CN 200620094302 patent/CN200990162Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751716A (en) * | 2015-03-27 | 2015-07-01 | 王浩聿 | Ohm law digital demonstrating instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |