CN203968097U - Photosignal change-over circuit - Google Patents
Photosignal change-over circuit Download PDFInfo
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- CN203968097U CN203968097U CN201420264580.0U CN201420264580U CN203968097U CN 203968097 U CN203968097 U CN 203968097U CN 201420264580 U CN201420264580 U CN 201420264580U CN 203968097 U CN203968097 U CN 203968097U
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- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 230000035807 sensation Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005693 optoelectronics Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of photosignal change-over circuit, comprise power input, photo resistance, signal output part, triode Q1 and triode Q2, described power input connects signal output part by resistance R 5, the link of described electricity consumption output and resistance R 5 is connected to the collector electrode of triode Q1 by resistance R 3, the base stage of described triode Q1 is connected to the negative pole of a polar capacitor C1, the grounded emitter of described triode Q1, the link of described electricity consumption output and resistance R 3 is connected to the link of triode Q1 and polar capacitor C1 by resistance R 2, the link of described electricity consumption output and resistance R 2 is by ground connection after resistance R 1 and photo resistance R6, the link of described resistance R 1 and photo resistance R6 is connected to the positive pole of polar capacitor C1, the link of described triode Q1 and resistance R 3 is connected to the base stage of triode Q2, the link of described resistance R 5 and signal output part is connected to the collector electrode of triode Q2, the grounded emitter of described triode Q2.The utlity model has advantage simple in structure, to reach light sensation triggering.
Description
Technical field
The utility model relates to circuit, especially relate to a kind of simple in structure, can reach the circuit that light sensation triggers.
Background technology
Optoelectronic switch is a kind of of transducer, and the variation that it is converted into electric current the variation of the power of light between transmitting terminal and receiving terminal is to reach the object of detection.Optoelectronic switch has been used as that the detection of thing position, liquid level control, product counting, width differentiation, speed detection, cut-to-length, hole identification, signal lag, automatically-controlled door sensing, colour code detect, punch press and the numerous areas such as cutter and security protection.In addition, utilize ultrared disguise, Hai Ke bank, warehouse, shop, office and other occasion needing are as the use of anti-stealing warning.But existing photosignal change-over circuit is all comparatively complicated.
Summary of the invention
For overcoming existing shortcoming, the utility model object is to provide a kind of can reach the photosignal change-over circuit that light sensation triggers.
The utility model is realized by following technical measures, a kind of photosignal change-over circuit, comprise power input, photo resistance, signal output part, triode Q1 and triode Q2, described power input connects signal output part by resistance R 5, the link of described electricity consumption output and resistance R 5 is connected to the collector electrode of triode Q1 by resistance R 3, the base stage of described triode Q1 is connected to the negative pole of a polar capacitor C1, the grounded emitter of described triode Q1, the link of described electricity consumption output and resistance R 3 is connected to the link of triode Q1 and polar capacitor C1 by resistance R 2, the link of described electricity consumption output and resistance R 2 is by ground connection after resistance R 1 and photo resistance R6, the link of described resistance R 1 and photo resistance R6 is connected to the positive pole of polar capacitor C1, the link of described triode Q1 and resistance R 3 is connected to the base stage of triode Q2, the link of described resistance R 5 and signal output part is connected to the collector electrode of triode Q2, the grounded emitter of described triode Q2.
As a kind of optimal way, the link of described triode Q1 and resistance R 3 is connected to the base stage of triode Q2 by resistance R 4.
As a kind of optimal way, the resistance of described resistance R 1 is that the resistance of 100K Ω, resistance R 2 is 5.6M Ω, and the resistance of described resistance R 3 is 100K Ω, and the resistance of described resistance R 5 is 10K Ω.
As a kind of optimal way, the resistance of described resistance R 4 is 1K Ω.
Operation principle of the present utility model is: 1, when photo resistance R6 does not sense light, electric current is through resistance R 2 flow through base stage and the emitter of triode Q1, thus turn-on transistor Q1, now triode Q2 cut-off, signal output part PORT has electric current to pass through, output high level signal; 2, when photo resistance R6 senses light, electric current flow through resistance R 1 and photo resistance R6, now triode Q1 cut-off, triode Q2 conducting, signal output part PORT does not have electric current to pass through, and PORT exports low flat signal.Therefore the utility model can reach the object that light sensation triggers.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
A kind of photosignal change-over circuit, with reference to figure 1, comprise power input, photo resistance, signal output part, triode Q1 and triode Q2, described power input connects signal output part by resistance R 5, the link of described electricity consumption output and resistance R 5 is connected to the collector electrode of triode Q1 by resistance R 3, the base stage of described triode Q1 is connected to the negative pole of a polar capacitor C1, the grounded emitter of described triode Q1, the link of described electricity consumption output and resistance R 3 is connected to the link of triode Q1 and polar capacitor C1 by resistance R 2, the link of described electricity consumption output and resistance R 2 is by ground connection after resistance R 1 and photo resistance R6, the link of described resistance R 1 and photo resistance R6 is connected to the positive pole of polar capacitor C1, the link of described triode Q1 and resistance R 3 is connected to the base stage of triode Q2, the link of described resistance R 5 and signal output part is connected to the collector electrode of triode Q2, the grounded emitter of described triode Q2.
The operation principle of this circuit is: 1, when photo resistance R6 does not sense light, electric current is through resistance R 2 flow through base stage and the emitter of triode Q1, thus turn-on transistor Q1, now triode Q2 cut-off, signal output part PORT has electric current to pass through, output high level signal; 2, when photo resistance R6 senses light, electric current flow through resistance R 1 and photo resistance R6, now triode Q1 cut-off, triode Q2 conducting, signal output part PORT does not have electric current to pass through, and PORT exports low flat signal.Thereby this circuit reaches the object that light sensation triggers.
The photosignal change-over circuit of the present embodiment, please refer to Fig. 1, specifically can also be specifically on the basis of previous technique scheme, and the link of triode Q1 and resistance R 3 is connected to the base stage of triode Q2 by resistance R 4.
The photosignal change-over circuit of the present embodiment, please refer to Fig. 1, specifically can also be specifically on the basis of previous technique scheme, the resistance of resistance R 1 is that the resistance of 100K Ω, resistance R 2 is 5.6M Ω, the resistance of described resistance R 3 is 100K Ω, and the resistance of described resistance R 5 is 10K Ω.
The photosignal change-over circuit of the present embodiment, please refer to Fig. 1, specifically can also be specifically on the basis of previous technique scheme, and the resistance of resistance R 4 is 1K Ω.
More than that the utility model photosignal change-over circuit is set forth; be used for helping to understand the utility model; but execution mode of the present utility model is not restricted to the described embodiments; anyly do not deviate from the change done under the utility model principle, modification, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (4)
1. a photosignal change-over circuit, it is characterized in that: comprise power input, photo resistance, signal output part, triode Q1 and triode Q2, described power input connects signal output part by resistance R 5, the link of described electricity consumption output and resistance R 5 is connected to the collector electrode of triode Q1 by resistance R 3, the base stage of described triode Q1 is connected to the negative pole of a polar capacitor C1, the grounded emitter of described triode Q1, the link of described electricity consumption output and resistance R 3 is connected to the link of triode Q1 and polar capacitor C 1 by resistance R 2, the link of described electricity consumption output and resistance R 2 is by ground connection after resistance R 1 and photo resistance R6, the link of described resistance R 1 and photo resistance R6 is connected to the positive pole of polar capacitor C1, the link of described triode Q1 and resistance R 3 is connected to the base stage of triode Q2, the link of described resistance R 5 and signal output part is connected to the collector electrode of triode Q2, the grounded emitter of described triode Q2.
2. photosignal change-over circuit according to claim 1, is characterized in that: the link of described triode Q1 and resistance R 3 is connected to the base stage of triode Q2 by resistance R 4.
3. photosignal change-over circuit according to claim 1, is characterized in that: the resistance of described resistance R 1 is that the resistance of 100K Ω, resistance R 2 is 5.6M Ω, and the resistance of described resistance R 3 is 100K Ω, and the resistance of described resistance R 5 is 10K Ω.
4. photosignal change-over circuit according to claim 2, is characterized in that: the resistance of described resistance R 4 is 1K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264580.0U CN203968097U (en) | 2014-05-22 | 2014-05-22 | Photosignal change-over circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264580.0U CN203968097U (en) | 2014-05-22 | 2014-05-22 | Photosignal change-over circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203968097U true CN203968097U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264580.0U Expired - Lifetime CN203968097U (en) | 2014-05-22 | 2014-05-22 | Photosignal change-over circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN203968097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730469A (en) * | 2015-03-16 | 2015-06-24 | 力帆实业(集团)股份有限公司 | Automatic monitor system for flasher endurance test |
-
2014
- 2014-05-22 CN CN201420264580.0U patent/CN203968097U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730469A (en) * | 2015-03-16 | 2015-06-24 | 力帆实业(集团)股份有限公司 | Automatic monitor system for flasher endurance test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518132 Guangdong province Shenzhen Guangming New District Gongming Street office Yu Tong Tian Liao community with the concept of road nineteen, road 10, Jiuzhou Industrial Park Building 1, floor 802 Patentee after: SHENZHEN F&R TECHNOLOGIES CO.,LTD. Address before: 518000 Guangdong city of Shenzhen province Baoan District Shiyan town Tangtou village Longma industrial city A1 Building 5 floor Patentee before: SHENZHEN F&R ELECTRONICS TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |