CN2837966Y - Object conduction property demonstrator - Google Patents
Object conduction property demonstrator Download PDFInfo
- Publication number
- CN2837966Y CN2837966Y CN 200520087872 CN200520087872U CN2837966Y CN 2837966 Y CN2837966 Y CN 2837966Y CN 200520087872 CN200520087872 CN 200520087872 CN 200520087872 U CN200520087872 U CN 200520087872U CN 2837966 Y CN2837966 Y CN 2837966Y
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- testee
- utility
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- model
- conduction property
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- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses an object conduction property demonstrator which belongs to a physics teaching aid, especially an electrics teaching aid. The object conduction property demonstrator comprises a power supply, conducting wires, measured objects, switches and conduction indicators. The utility model has the structure that at least three groups of test units which are composed of the conduction indicators, the measured objects and the switches are arranged on the conducting wires at both ends of the power supply in parallel. The object conduction property demonstrator has the advantages of wide application scope, simple structure, simple manufacture and visual demonstration effect. The utility model is suitable for use in electrics teaching in elementary schools or lower grades of middle schools.
Description
Affiliated technical field
The utility model belongs to a kind of physical teaching aid, particularly Teaching aid for electricity.
Background technology
In the electricity teaching of physics subject, usually use object electric conductivity demonstration equipment, these equipment use bulb usually, because it is bigger to light the needed electric current of bulb, in test when though but those belong to the bigger testee of conductor resistance such as unseasoned lumber, human body etc. bulb not luminous, can not play the demonstration effect.
Summary of the invention
The purpose of this utility model provides a kind of technical scheme of novel conductive performance demonstration device of the testee conducting performance test that goes for various different resistance values.
The technical solution of the utility model is, object electric conductivity demonstration device, comprise power supply, lead, testee, switch, conductive indicator, its structure is: be installed in parallel 3 groups of test cells of being made up of conductive indicator, testee, switch on the lead of both ends of power at least.
Described conductive indicator is the music circuit of small electric bulb or band amplifier.
The described testee testee group that at least 3 testees and switch are formed of serving as reasons.
The beneficial effects of the utility model are because the technical scheme conductive indicator that the utility model provides has adopted the music circuit of small electric bulb and band amplifier, can demonstrate out different objects electric conductivity difference by the brightness of small electric bulb during for the little conductor of measuring resistance value, or the resistance value of object of the same race is directly proportional with its length and its cross-sectional area is inversely proportional to, though small electric bulb does not work but thereby the music circuit sounding is demonstrated out it intuitively and belonged to conductor during for the bigger object of measuring resistance value, for insulator then small electric bulb do not work, music circuit not sounding demonstrates out that it is non-conductive.This demonstration device is widely applicable, simple in structure, be easy to make, the demonstration effect is directly perceived, is fit to the teaching of primary school or middle school primary grades electricity and uses.
Description of drawings
Accompanying drawing is an electrical block diagram of the present utility model,
Among the figure, 1. power supply, 2. lead, 3. small electric bulb, 4. measured conductor, 5. switch, 6. shared small electric bulb switch, 7. shared small electric bulb, 8. music circuit switch, 9. music circuit, 10 testees, 11. testee switches, 12. testee leads.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
Embodiment, object electric conductivity demonstration device, comprise power supply 1, lead 2, testee 4,10, switch 5, conductive indicator, its structure is: be installed in parallel 3 groups of test cells of being made up of small electric bulb 3, measured conductor 4, switch 5 on the lead of both ends of power, be installed in parallel the testee group of 5-10 testee switch 11, testee 12 compositions on power supply one end lead and the testee lead 12, shared small electric bulb 7 and switch 6 and music circuit 9 and switch 8 are being installed between the testee lead and the power supply other end.
Claims (3)
1. an object electric conductivity demonstration device comprises power supply, lead, testee, switch, conductive indicator, it is characterized in that: be installed in parallel 3 groups of test cells of being made up of conductive indicator, testee, switch on the lead of both ends of power at least.
2. object electric conductivity demonstration device according to claim 1 is characterized in that: described conductive indicator is the music circuit of small electric bulb or band amplifier.
3. object electric conductivity demonstration device according to claim 1 is characterized in that: the described testee testee group that at least 3 testees and switch are formed of serving as reasons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520087872 CN2837966Y (en) | 2005-10-10 | 2005-10-10 | Object conduction property demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520087872 CN2837966Y (en) | 2005-10-10 | 2005-10-10 | Object conduction property demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837966Y true CN2837966Y (en) | 2006-11-15 |
Family
ID=37392456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520087872 Expired - Fee Related CN2837966Y (en) | 2005-10-10 | 2005-10-10 | Object conduction property demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2837966Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464467A (en) * | 2014-12-26 | 2015-03-25 | 融水苗族自治县教育局 | Physical conductivity demonstrator |
| CN106652685A (en) * | 2015-11-03 | 2017-05-10 | 重庆尊来科技有限责任公司 | Stepped type conductivity teaching demonstration device for operational amplifier controlling |
| CN106710387A (en) * | 2015-11-17 | 2017-05-24 | 重庆尊来科技有限责任公司 | Teaching demonstration instrument capable of being made by oneself |
| CN106781904A (en) * | 2015-11-22 | 2017-05-31 | 重庆尊来科技有限责任公司 | The education demonstrator that a kind of integrated form sizing is indicated |
| CN106781905A (en) * | 2015-11-23 | 2017-05-31 | 重庆尊来科技有限责任公司 | A kind of balanced type holds formula demonstration instrument for teaching |
-
2005
- 2005-10-10 CN CN 200520087872 patent/CN2837966Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464467A (en) * | 2014-12-26 | 2015-03-25 | 融水苗族自治县教育局 | Physical conductivity demonstrator |
| CN106652685A (en) * | 2015-11-03 | 2017-05-10 | 重庆尊来科技有限责任公司 | Stepped type conductivity teaching demonstration device for operational amplifier controlling |
| CN106710387A (en) * | 2015-11-17 | 2017-05-24 | 重庆尊来科技有限责任公司 | Teaching demonstration instrument capable of being made by oneself |
| CN106781904A (en) * | 2015-11-22 | 2017-05-31 | 重庆尊来科技有限责任公司 | The education demonstrator that a kind of integrated form sizing is indicated |
| CN106781905A (en) * | 2015-11-23 | 2017-05-31 | 重庆尊来科技有限责任公司 | A kind of balanced type holds formula demonstration instrument for teaching |
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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 |