CN202393876U - Test device for detecting photosensitive circuit board - Google Patents
Test device for detecting photosensitive circuit board Download PDFInfo
- Publication number
- CN202393876U CN202393876U CN2011205204280U CN201120520428U CN202393876U CN 202393876 U CN202393876 U CN 202393876U CN 2011205204280 U CN2011205204280 U CN 2011205204280U CN 201120520428 U CN201120520428 U CN 201120520428U CN 202393876 U CN202393876 U CN 202393876U
- Authority
- CN
- China
- Prior art keywords
- triode
- photosensitive circuit
- positive
- resistance
- circuit plate
- 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
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Abstract
The utility model provides a test device for detecting a photosensitive circuit board. The test device comprises a first resistor, a light emitting diode (LED) lamp, a triode and a second resistor, wherein one end of the first resistor is respectively connected with a power supply and the photosensitive circuit board, and the other end of the first resistor is connected with a positive electrode of the LED lamp; a negative electrode of the LED lamp is connected with the triode; the triode is connected with the ground; one end of the second resistor is respectively connected with the ground and the triode; and the other end of the second resistor is connected with the photosensitive circuit board. The test device has a simple structure; the test cost and the operation of a production line worker are reduced; the labor intensity of the worker is reduced; and the working efficiency of a production line is improved.
Description
[technical field]
The utility model relates to a kind of electronic information technical field, particularly a kind of proving installation that is used to detect the photosensitive circuit plate.
[background technology]
The display or the TV of the automatic sensitization of existing band; Its front at display or TV is provided with a photosensitive circuit plate, and said photosensitive circuit plate has induced environment brightness function, can come to regulate automatically the size of display brightness according to the intensity of surrounding environment brightness light; Simultaneously can also sensitive display or TV the place ahead whether user or beholder are arranged; If no, then make display or TV get into holding state automatically, after the longer time, can close the power supply of display or TV automatically.The display of photosensitive circuit plate or the effect that TV has good energy-saving consumption-reducing are housed.This class display or TV must check photosensitive circuit plate before product export operate as normal whether; Existing method of testing is at each assembly of display or TV all after the assembled, and through blocking the photosensitive circuit plate with hand or baffle plate, whether observation display or TV get into holding state then; If entering holding state; Explain that the photosensitive circuit plate is normal,, explain that the photosensitive circuit plate has fault if do not get into holding state.The method of existing detection photosensitive circuit plate need be tested with whole display, also need take the display maintenance apart if find fault, verify that therefore the testing cost of photosensitive circuit plate quality is high, and test speed is slow.
[summary of the invention]
The technical matters that the utility model will solve is to provide a kind of proving installation that is used to detect the photosensitive circuit plate, and it is simple in structure; Reduce testing cost; Reduce production line operation person's action, reduce the labour intensity of operator, improved the operating efficiency of production line simultaneously.
The utility model is achieved in that
A kind of proving installation that is used to detect the photosensitive circuit plate comprises one first resistance, a LED lamp; One triode and one second resistance, an end of said first resistance are connected to power supply and said photosensitive circuit plate respectively, and the other end connects the positive pole of said LED lamp; The negative pole of said LED lamp is connected to said triode; Said triode is connected to the earth, and an end of said second resistance is connected to the earth and said triode respectively, and the other end of said second resistance is connected to said photosensitive circuit plate.
Further, said triode is a NPN type triode, and the collector of said NPN type triode links to each other with the negative pole of said LED lamp, and the emitter of said NPN type triode is connected to the earth, and the base stage of said NPN type triode links to each other with said second resistance.
Further, said triode is the positive-negative-positive triode, and the emitter of said positive-negative-positive triode links to each other with the negative pole of said LED lamp, and the collector of said positive-negative-positive triode is connected to the earth, and the base stage of said positive-negative-positive triode links to each other with said second resistance.
Further, said power supply is 5V or 12V.
Further, the resistance of said first resistance and said second resistance is 800 Ω～2K Ω.
The advantage of the utility model is: the utility model proving installation with after the photosensitive circuit plate is connected, is blocked the photosensitive circuit plate with hand, through observing the bright quality that secretly can judge the photosensitive circuit plate of LED; And be not assembled on the display at the photosensitive circuit plate and can test its quality, it is simple in structure, and is easy to operate; And reduced testing cost; Reduce production line operation person's action, reduce the labour intensity of operator, promoted the operating efficiency of production line.
[description of drawings]
Combine embodiment that the utility model is further described with reference to the accompanying drawings.
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the structural representation of the utility model embodiment two.
[embodiment]
See also Fig. 1 to shown in Figure 2, the embodiment of the utility model is carried out detailed explanation.
A kind of proving installation that is used to detect the photosensitive circuit plate; Comprise one first resistance 1, one LED lamp, 2, one triodes 3 and one second resistance 4; One end of said first resistance 1 is connected to power supply and said photosensitive circuit plate 5 respectively; The other end connects the positive pole of said LED lamp 2, and the negative pole of said LED lamp 2 is connected to said triode 3, and said triode 3 is connected to the earth; One end of said second resistance 4 is connected to the earth and said triode 3 respectively, and the other end of said second resistance 4 is connected to said photosensitive circuit plate 5.
Embodiment one: as shown in Figure 1; Said triode 3 adopts NPN type triode; The collector of said NPN type triode links to each other with the negative pole of said LED lamp 2, and the emitter of said NPN type triode is connected to the earth, and the base stage of said NPN type triode links to each other 4 with said second resistance.Its principle of work is: behind the power connection, the NPN type triode B utmost point is to the electric current I of the E utmost point
B, the control NPN type triode C utmost point is to the electric current I of the E utmost point
C, making the triode conducting, the LED lamp is luminous; Cover the transmitting terminal or the receiving end of sensitization platelet with hand, the NPN type triode B utmost point is to E electrode current I
BDiminish, the NPN type triode C utmost point is to E electrode current I
CAlso diminish thereupon, cause diminishing the deepening of LED lamp through the electric current of LED lamp.
Embodiment two: as shown in Figure 2; The difference of present embodiment and embodiment one is: said triode 3 adopts the positive-negative-positive triode; The emitter of said positive-negative-positive triode links to each other with the negative pole of said LED lamp 2; The collector of said positive-negative-positive triode is connected to the earth, and the base stage of said positive-negative-positive triode links to each other with said second resistance 4.Its principle of work is: behind the power connection, the positive-negative-positive triode B utmost point is to C electrode current I
B, the control positive-negative-positive triode E utmost point is to C electrode current I
C, making the triode conducting, the LED lamp is luminous; Cover the transmitting terminal or the receiving end of photosensitive circuit plate with hand, the positive-negative-positive triode B utmost point is to C electrode current I
BDiminish, the control positive-negative-positive triode E utmost point is to C electrode current I
CAlso diminish, cause diminishing the deepening of LED lamp through the electric current of LED lamp.
In above-mentioned two embodiment, said power supply can be 5V or 12V, and the resistance of said first resistance 1 and said second resistance 4 is 800 Ω～2K Ω.
The utility model is when test photosensitive circuit plate; The photosensitive circuit plate only need combine the utility model device, through observing the bright dark variation of LED lamp in the utility model device, just can judge the quality of photosensitive circuit plate; Operate simplyr, and promoted the operating efficiency of production line.
The above; Be merely the utility model preferred embodiment; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (5)
1. proving installation that is used to detect the photosensitive circuit plate; It is characterized in that: comprise one first resistance, a LED lamp, a triode and one second resistance; One end of said first resistance is connected to power supply and said photosensitive circuit plate respectively; The other end connects the positive pole of said LED lamp, and the negative pole of said LED lamp is connected to said triode, and said triode is connected to the earth; One end of said second resistance is connected to the earth and said triode respectively, and the other end of said second resistance is connected to said photosensitive circuit plate.
2. a kind of proving installation that is used to detect the photosensitive circuit plate according to claim 1; It is characterized in that: said triode is a NPN type triode; The collector of said NPN type triode links to each other with the negative pole of said LED lamp; The emitter of said NPN type triode is connected to the earth, and the base stage of said NPN type triode links to each other with said second resistance.
3. a kind of proving installation that is used to detect the photosensitive circuit plate according to claim 1; It is characterized in that: said triode is the positive-negative-positive triode; The emitter of said positive-negative-positive triode links to each other with the negative pole of said LED lamp; The collector of said positive-negative-positive triode is connected to the earth, and the base stage of said positive-negative-positive triode links to each other with said second resistance.
4. a kind of proving installation that is used to detect the photosensitive circuit plate according to claim 1 is characterized in that: said power supply is 5V or 12V.
5. a kind of proving installation that is used to detect the photosensitive circuit plate according to claim 1 is characterized in that: the resistance of said first resistance and said second resistance is 800 Ω～2K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205204280U CN202393876U (en) | 2011-12-13 | 2011-12-13 | Test device for detecting photosensitive circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205204280U CN202393876U (en) | 2011-12-13 | 2011-12-13 | Test device for detecting photosensitive circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202393876U true CN202393876U (en) | 2012-08-22 |
Family
ID=46668790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205204280U Expired - Fee Related CN202393876U (en) | 2011-12-13 | 2011-12-13 | Test device for detecting photosensitive circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202393876U (en) |
-
2011
- 2011-12-13 CN CN2011205204280U patent/CN202393876U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20171213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |