CN202003560U - Photoelectric property demonstration instrument of light-emitting diode - Google Patents
Photoelectric property demonstration instrument of light-emitting diode Download PDFInfo
- Publication number
- CN202003560U CN202003560U CN2010206966874U CN201020696687U CN202003560U CN 202003560 U CN202003560 U CN 202003560U CN 2010206966874 U CN2010206966874 U CN 2010206966874U CN 201020696687 U CN201020696687 U CN 201020696687U CN 202003560 U CN202003560 U CN 202003560U
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- emitting diode
- jack
- terminal regulator
- pin
- light
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Abstract
The utility model relates to a photoelectric property demonstration instrument of a light-emitting diode, belonging to the demonstration instrument technology field. A circuit is composed of a transformer, a rectification circuit, capacitors, a three-terminal regulator, resistors, an ammeter, a voltmeter and a light-emitting diode. In the utility model, the 220 V alternating current is transformed by the transformer, rectified by the rectification circuit and filtered by the first capacitor, and then is supplied to the next stage circuit; the No.1 pin of the three-terminal regulator is connected with the anode of a direct current power supply, and the No.3 pin is connected with the cathode of the direct current power supply via the second variable resistor, and the first resistor is firstly in series connection with the second variable resistor, and then is in parallel connection with the second capacitor. The photoelectric property demonstration instrument of the light-emitting diode is characterized in that, after the ammeter being in series connection with the third resistor, one end of the ammeter is connected with the No.2 pin of the three-terminal regulator, and the other end is connected with a jack, and the two ends of the jack are connected with the voltmeter and the light-emitting diode. By employing the above technological scheme, the advantage and positive effect of the utility model are that, the visuality is strong and the demonstration instrument is economic applicable.
Description
Technical field
The utility model relates to a kind of light emitting diode photoelectric characteristic demonstrator, belongs to the demonstration instrument technical field.
Background technology
At present, in the teaching of electronic circuit, when lecturing the performance of versicolor light emitting diode and photoelectric characteristic, no demonstration instrument demonstration, the student sounds general flavor, does not have domestic animal directly perceived.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of light emitting diode photoelectric characteristic demonstrator, can demonstrate the photoelectric characteristic of light emitting diode of all kinds.
The technical scheme that its technical matters that solves the utility model adopts is: circuit is by transformer, rectification circuit, electric capacity, three terminal regulator, resistance, reometer, voltage table and light emitting diode are formed, the 220V alternating current is through the transformer transformation, behind the rectification circuit rectification and first capacitor filtering backward the level circuit supply, 1 pin of three terminal regulator connects the positive pole of direct supply, 3 pin of three terminal regulator connect the negative pole of direct supply by the second adjustable resistance, after the series connection of first resistance and the second adjustable resistance again with the second electric capacity parallel connection, it is characterized in that: end after the series connection of reometer and the 3rd resistance and 2 pin of three terminal regulator link to each other, the other end links to each other with jack, voltage table is connected on two ends of jack, jack two ends link to each other with light emitting diode, Graphic Panel links to each other with base, reometer, voltage table, jack, the second adjustable resistance places the front of Graphic Panel.
Because adopt technique scheme, advantage and good effect that the utility model had are: intuitive is strong, and is economic and practical.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is the structural representation of the utility model embodiment.
T. transformer M. rectification circuit C among the figure
1. first capacitor C
2. second capacitor I. three terminal regulator R
1. first resistance R
2. the second adjustable resistance R
3. the 3rd resistance A. reometer V. voltage table B. jack G. light emitting diode E. Graphic Panel D. base
Embodiment
In Fig. 1, the 220V alternating current is through transformer (T) transformation, rectification circuit (M) rectification and the first electric capacity (C
1) level circuit supply backward after the filtering, 1 pin of three terminal regulator (I) connects the positive pole of direct supply, and 3 pin of three terminal regulator (I) are by the second adjustable resistance (R
2) connect the negative pole of direct supply, the first resistance (R
1) and the second adjustable resistance (R
2) after the series connection again with the second electric capacity (C
2) parallel connection, reometer (A) and the 3rd resistance (R
3) a end after the series connection and 2 pin of three terminal regulator (I) link to each other, the other end links to each other with jack (B), and voltage table (V) is connected on two ends of jack (B), and jack (B) two ends link to each other with light emitting diode (G).
In Fig. 2, Graphic Panel (E) links to each other with base (D), reometer (A), voltage table (V), jack (B), the second adjustable resistance (R
2) place the front of Graphic Panel (E).
Claims (1)
1. light emitting diode photoelectric characteristic demonstrator, circuit is made up of transformer, rectification circuit, electric capacity, three terminal regulator, resistance, reometer, voltage table and light emitting diode, and the 220V alternating current is through transformer (T) transformation, rectification circuit (M) rectification and the first electric capacity (C
1) level circuit supply backward after the filtering, 1 pin of three terminal regulator (I) connects the positive pole of direct supply, and 3 pin of three terminal regulator (I) are by the second adjustable resistance (R
2) connect the negative pole of direct supply, the first resistance (R
1) and the second adjustable resistance (R
2) after the series connection again with the second electric capacity (C
2) parallel connection, it is characterized in that: reometer (A) and the 3rd resistance (R
3) a end after the series connection and 2 pin of three terminal regulator (I) link to each other, the other end links to each other with jack (B), voltage table (V) is connected on two ends of jack (B), and jack (B) two ends link to each other with light emitting diode (G), reometer (A), voltage table (V), jack (B), the second adjustable resistance (R
2) place the front of Graphic Panel (E).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206966874U CN202003560U (en) | 2010-12-22 | 2010-12-22 | Photoelectric property demonstration instrument of light-emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206966874U CN202003560U (en) | 2010-12-22 | 2010-12-22 | Photoelectric property demonstration instrument of light-emitting diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003560U true CN202003560U (en) | 2011-10-05 |
Family
ID=44706293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206966874U Expired - Fee Related CN202003560U (en) | 2010-12-22 | 2010-12-22 | Photoelectric property demonstration instrument of light-emitting diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003560U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506034A (en) * | 2014-09-26 | 2015-04-08 | 武汉钢铁(集团)公司 | Continuous adjustable DC stabilized power supply circuit with 0V minimum output voltage based on three terminal regulator |
| CN105828483A (en) * | 2016-05-18 | 2016-08-03 | 上海欧美拉光电股份有限公司 | LED lamp system with high luminous efficiency |
-
2010
- 2010-12-22 CN CN2010206966874U patent/CN202003560U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506034A (en) * | 2014-09-26 | 2015-04-08 | 武汉钢铁(集团)公司 | Continuous adjustable DC stabilized power supply circuit with 0V minimum output voltage based on three terminal regulator |
| CN105828483A (en) * | 2016-05-18 | 2016-08-03 | 上海欧美拉光电股份有限公司 | LED lamp system with high luminous efficiency |
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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: 20111005 Termination date: 20111222 |