CN202404807U - Slide rheostat demonstrator - Google Patents
Slide rheostat demonstrator Download PDFInfo
- Publication number
- CN202404807U CN202404807U CN2011204987673U CN201120498767U CN202404807U CN 202404807 U CN202404807 U CN 202404807U CN 2011204987673 U CN2011204987673 U CN 2011204987673U CN 201120498767 U CN201120498767 U CN 201120498767U CN 202404807 U CN202404807 U CN 202404807U
- Authority
- CN
- China
- Prior art keywords
- slide rheostat
- double
- demonstrator
- switch
- break switch
- 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
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- Led Device Packages (AREA)
Abstract
The utility model relates to a demonstrator, in particular relates to a slide rheostat demonstrator. The slide rheostat demonstrator is characterized in that after a switch, a DC (direct current) power supply and a bulb are connected in series on the front of a demonstration board, one end is connected with the central end of a first double-pole switch, and the other end is connected with the central end of a second double-pole switch; a fixed contact and a sliding contact at one end of the slide rheostat are connected with the first double-pole switch; and a fixed contact and a sliding contact at the other end of the slide rheostat are connected with the second double-pole switch. A first LED (light emitting diode) and a second LED are fixed on the slide rheostat. The slide rheostat demonstrator provided by the utility model gives clear demonstration and is economical and practical.
Description
Technical field
The utility model relates to a kind of demonstration device, particularly a kind of slide rheostat demonstration device.
Background technology
At present, when lecturing the principle of work of slide rheostat demonstration device, the student can not understand the principle of work of rheostat demonstration device intuitively.
Summary of the invention
The utility model technical matters to be solved is: a kind of slide rheostat demonstration device is provided, can demonstrates the variation of slide rheostat resistance through the luminous intensity of bulb.
The utility model solves the technical scheme that its technical matters adopted: the utility model is made up of demonstration board, slide rheostat, first double-break switch, second double-break switch, switch, direct supply and bulb; It is characterized in that: in the front of demonstration board; End after switch, direct supply and the bulb series connection and the center-side of first double-break switch link to each other; The other end links to each other with the center-side of second double-break switch; The fixed contact of slide rheostat one end, sliding contact and first double-break switch link to each other, and the fixed contact of the slide rheostat other end, sliding contact and second double-break switch link to each other.
Because adopt technique scheme, advantage and good effect that the utility model had are: come into plain view, economic and practical.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Figure of description is the structural representation of the utility model.
B. demonstration board T. slide rheostat K among the figure
1. the first double-break switch K
2. the second double-break switch K
3. switch D
1. the first light emitting diode D
2. the second light emitting diode A. direct supply Y. bulb
Embodiment
In Figure of description, in the front of demonstration board (B), switch (K
3), an end and the first double-break switch (K after the series connection of direct supply (A) and bulb (Y)
1) center-side link to each other the other end and the second double-break switch (K
2) center-side link to each other the fixed contact of slide rheostat (T) end, sliding contact and the first double-break switch (K
1) link to each other the fixed contact of slide rheostat (T) other end, sliding contact and the second double-break switch (K
2) link to each other.First light emitting diode (the D
1), the second light emitting diode (D
1) be fixed on the slide rheostat (T).
Claims (1)
1. a slide rheostat demonstration device is made up of demonstration board, slide rheostat, first double-break switch, second double-break switch, switch, direct supply and bulb, it is characterized in that: in the front of demonstration board (B), and switch (K
3), an end and the first double-break switch (K after the series connection of direct supply (A) and bulb (Y)
1) center-side link to each other the other end and the second double-break switch (K
2) center-side link to each other the fixed contact of slide rheostat (T) end, sliding contact and the first double-break switch (K
1) link to each other the fixed contact of slide rheostat (T) other end, sliding contact and the second double-break switch (K
2) link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204987673U CN202404807U (en) | 2011-11-25 | 2011-11-25 | Slide rheostat demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204987673U CN202404807U (en) | 2011-11-25 | 2011-11-25 | Slide rheostat demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202404807U true CN202404807U (en) | 2012-08-29 |
Family
ID=46702441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204987673U Expired - Fee Related CN202404807U (en) | 2011-11-25 | 2011-11-25 | Slide rheostat demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202404807U (en) |
-
2011
- 2011-11-25 CN CN2011204987673U patent/CN202404807U/en not_active Expired - Fee Related
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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: 20120829 Termination date: 20121125 |