CN205356773U - Intelligence circuit in a poor light of universal meter - Google Patents
Intelligence circuit in a poor light of universal meter Download PDFInfo
- Publication number
- CN205356773U CN205356773U CN201620045556.7U CN201620045556U CN205356773U CN 205356773 U CN205356773 U CN 205356773U CN 201620045556 U CN201620045556 U CN 201620045556U CN 205356773 U CN205356773 U CN 205356773U
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- circuit
- backlight
- input
- resistance
- driver plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an intelligence circuit in a poor light of universal meter, including a circuit input end, the 2nd circuit input end and circuit output, intelligence circuit in a poor light still includes triode, backlight, driver plate pilot lamp, potentiometre and photo resistance. A circuit input end connects in the input of the input of backlight and driver plate pilot lamp, and the output of backlight and the output of driver plate pilot lamp are connected respectively in the collecting electrode of triode, and the projecting pole of triode is connected in the circuit output. The 2nd circuit input end connects in the input of potentiometre, and the output of potentiometre is connected respectively in the base of the input and the triode of photo resistance, and the output of photo resistance is connected in the circuit output. The utility model discloses a what intelligence circuit in a poor light of universal meter had realized that intelligent control is shaded opens and closes, does not need manually operation, have intelligent high, convenient to use's characteristics.
Description
Technical field
This utility model belongs to circuit tester technical field, relates to the intelligent backlight circuit of circuit tester.
Background technology
At present, the backlight function of circuit tester of the prior art, it is usually and adopts key switch to control, push button when needing unlatching backlight, starting after backlight, having some is that after time delay a period of time, backlight is just extinguished, and also some backlights that then need again to push button could be extinguished, intelligent low, it is not very convenient to use.
For this, the intelligent backlight circuit of a kind of circuit tester of necessary design, this intelligent backlight circuit can make backlight automatically light or close, and does not need manual operation, intelligent high, very easy to use.
Utility model content
The purpose of this utility model is to provide the intelligent backlight circuit of circuit tester, this intelligent backlight circuit energy Based Intelligent Control backlight, does not need manual operation, has intelligent high, feature very easy to use.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: the intelligent backlight circuit of a kind of circuit tester, including the first circuit input end, second circuit input and circuit output end；
Described intelligent backlight circuit also includes audion, backlight, driver plate display lamp, potentiometer and photoconductive resistance；
Described first circuit input end is connected to the input of described backlight and the input of driver plate display lamp, the outfan of described backlight and the outfan of driver plate display lamp are connected to the colelctor electrode of described audion, and the emitter stage of described audion is connected to described circuit output end；
Described second circuit input is connected to the input of described potentiometer, and the outfan of described potentiometer is connected to the input of described photoconductive resistance and the base stage of described audion, and the outfan of described photoconductive resistance is connected to described circuit output end.
Further, between described second circuit input and the input of described potentiometer, place is connected to the first resistance.
Further, the input voltage of described second circuit input is 5V.
Further, between outfan and the base stage of described audion of described potentiometer, place is connected to the second resistance.
Further, between described first circuit input end and the input of described backlight, place is connected to the 3rd resistance, and between the input of described first circuit input end and described driver plate display lamp, place is connected to the 4th resistance.
Further, described backlight is the first light emitting diode, and described driver plate display lamp is the second light emitting diode.
This utility model beneficial effect: the intelligent backlight circuit of circuit tester described in the utility model, have employed light-sensitive device to be controlled, achieve the function of Based Intelligent Control backlight, can automatically turn on or close the backlight function of circuit tester according to the change of externally used environment.When external environment condition light is brighter, backlight is not turned on；When extraneous light is dark, when inconvenience measurement and reading, then automatically turn on backlight, light driver plate display lamp simultaneously, conveniently carry out gear switch and the reading read on display screen, without manually opened backlight, more convenient to use.Therefore the intelligent backlight circuit of circuit tester of the present utility model, it has intelligent high, feature easy to use.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the intelligent backlight circuit of this utility model embodiment.
Description of reference numerals:
First circuit input end V1+, second circuit input V2+, circuit output end V-；
Backlight LED1, driver plate display lamp LED2；
Potentiometer VR4, audion T6；
Photoconductive resistance R58；
First resistance R57, the second resistance R59, the 3rd resistance R60, the 4th resistance R61.
Detailed description of the invention
Below in conjunction with accompanying drawing of the present utility model, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
As shown in Figure 1, the intelligent backlight circuit of the circuit tester of the present embodiment, second circuit input V2+, circuit output end V-, audion T6, backlight LED1, driver plate display lamp LED2, potentiometer VR4 and the photoconductive resistance R58 that this intelligent backlight circuit includes the first circuit input end V1+, input voltage is 5V.
First circuit input end V1+ is connected to the input of backlight LED1 and the input of driver plate display lamp LED2, the outfan of backlight LED1 and the outfan of driver plate display lamp LED2 are connected to the colelctor electrode of audion T6, wherein, between first circuit input end V1+ and the input of backlight LED1, place is connected to the 3rd resistance R60 for current limliting, and between the input of the first circuit input end V1+ and driver plate display lamp LED2, place is connected to the 4th resistance R61 for current limliting.The emitter stage of audion T6 is connected to circuit output end V-.
Second circuit input V2+ is connected to the input of potentiometer VR4, and wherein between two circuit input end V2+ and the input of potentiometer VR4, place is connected to the first resistance R57.The outfan of potentiometer VR4 is connected to the input of photoconductive resistance R58 and the base stage of audion T6, and wherein between outfan and the base stage of audion T6 of potentiometer VR4, place is connected to the second resistance R59.The outfan of photoconductive resistance R58 is connected to circuit output end V-.
As optimal technical scheme, backlight LED1 is designed as the first light emitting diode, and driver plate display lamp LED2 is designed as the second light emitting diode.
Below the principle of intelligent backlight circuit described in the utility model is described in further detail.
When external environment condition is brighter, the resistance of photoconductive resistance R58 diminishes, and the base voltage of audion T6 is relatively low, and now audion T6 is in cut-off state, backlight LED1 and driver plate display lamp LED2 and flows through all without electric current, and two lamps all do not work；When external environment condition is dark, the resistance of photoconductive resistance R58 can become big along with the dimmed of light, the more dark then resistance of light is more big, the base voltage of audion T6 also can become larger, when base voltage is even as big as making audion T6 turn on, then backlight LED1 and driver plate display lamp LED2 will have electric current to flow through, and two lantern festivals are lighted simultaneously, and the more dark then lantern festival of light is more bright.Changing the brightness of two lamps of resistance scalable of the 3rd resistance R60 and the four resistance R61, potentiometer VR4 is that induction point adjusts potentiometer, regulates the point that this potentiometer VR4 adjustable backlight is lighted, namely regulates and light backlight under what light condition.
To sum up, the intelligent backlight circuit of circuit tester described in the utility model, have employed light-sensitive device to be controlled, achieve the function of Based Intelligent Control backlight, according to the change of externally used environment, can automatically turn on or close the backlight function of circuit tester, when external environment condition light is brighter, backlight is not turned on, and saves electricity；When extraneous light is dark, when inconvenience measurement and reading, then automatically turning on backlight, light driver plate display lamp simultaneously, conveniently carry out gear switch and the reading read on display screen, without the unlatching being performed manually by backlight, user is more convenient to use.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (6)
1. an intelligent backlight circuit for circuit tester, including the first circuit input end (V1+), second circuit input (V2+) and circuit output end (V-), it is characterised in that:
Described intelligent backlight circuit also includes audion (T6), backlight (LED1), driver plate display lamp (LED2), potentiometer (VR4) and photoconductive resistance (R58)；
Described first circuit input end (V1+) is connected to the input of described backlight (LED1) and the input of driver plate display lamp (LED2), the outfan of described backlight (LED1) and the outfan of driver plate display lamp (LED2) are connected to the colelctor electrode of described audion (T6), and the emitter stage of described audion (T6) is connected to described circuit output end (V-)；
Described second circuit input (V2+) is connected to the input of described potentiometer (VR4), the outfan of described potentiometer (VR4) is connected to the input of described photoconductive resistance (R58) and the base stage of described audion (T6), and the outfan of described photoconductive resistance (R58) is connected to described circuit output end (V-).
2. the intelligent backlight circuit of a kind of circuit tester according to claim 1, it is characterised in that between the input of described second circuit input (V2+) and described potentiometer (VR4), place is connected to the first resistance (R57).
3. the intelligent backlight circuit of a kind of circuit tester according to claim 1 and 2, it is characterised in that the input voltage of described second circuit input (V2+) is 5V.
4. the intelligent backlight circuit of a kind of circuit tester according to claim 1, it is characterised in that between outfan and the base stage of described audion (T6) of described potentiometer (VR4), place is connected to the second resistance (R59).
5. the intelligent backlight circuit of a kind of circuit tester according to claim 1, it is characterized in that, between the input of described first circuit input end (V1+) and described backlight (LED1), place is connected to the 3rd resistance (R60), and between described first circuit input end (V1+) and the input of described driver plate display lamp (LED2), place is connected to the 4th resistance (R61).
6. the intelligent backlight circuit of a kind of circuit tester according to claim 1 or 5, it is characterised in that described backlight (LED1) is the first light emitting diode, and described driver plate display lamp (LED2) is the second light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045556.7U CN205356773U (en) | 2016-01-15 | 2016-01-15 | Intelligence circuit in a poor light of universal meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045556.7U CN205356773U (en) | 2016-01-15 | 2016-01-15 | Intelligence circuit in a poor light of universal meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205356773U true CN205356773U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620045556.7U Active CN205356773U (en) | 2016-01-15 | 2016-01-15 | Intelligence circuit in a poor light of universal meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205356773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455196A (en) * | 2016-08-30 | 2017-02-22 | 德韧干巷汽车系统（上海）有限公司 | Lighting and dimming circuit of gear indicator of automobile shifter |
-
2016
- 2016-01-15 CN CN201620045556.7U patent/CN205356773U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455196A (en) * | 2016-08-30 | 2017-02-22 | 德韧干巷汽车系统（上海）有限公司 | Lighting and dimming circuit of gear indicator of automobile shifter |
| CN106455196B (en) * | 2016-08-30 | 2018-06-26 | 德韧干巷汽车系统（上海）有限公司 | A kind of automobile gear shift gear guidance lighting light adjusting circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |