CN201509345U - Light-operated circuit - Google Patents
Light-operated circuit Download PDFInfo
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- CN201509345U CN201509345U CN2009202402314U CN200920240231U CN201509345U CN 201509345 U CN201509345 U CN 201509345U CN 2009202402314 U CN2009202402314 U CN 2009202402314U CN 200920240231 U CN200920240231 U CN 200920240231U CN 201509345 U CN201509345 U CN 201509345U
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Abstract
The utility model relates to a light-operated circuit, which comprises a comparison circuit, a control circuit, a start power circuit and an auxiliary power circuit. According to the change of the light ray, the on and off of the power supply can be automatically controlled, and the use is very convenient; due to the arrangement of the auxiliary power circuit, after the light-operated circuit is started, the start power circuit can stop working automatically; the auxiliary power circuit can supply the power supply for the comparison circuit, thereby reducing the temperature increasing caused by the control circuit and improving the reliability of the whole circuit.
Description
Technical field
The utility model relates to a kind of control circuit, specifically, relates to a kind of light-operated circuit that utilizes light to control light.
Background technology
The electric ballast of Shi Yonging in the market, generally to use hand switch, by people's console switch, often cause the someone not have the thin and weak man still bright, add that the people for unfamiliar condition may can not find control switch and can't turn on lamp under the darker situation of light, do not have real energy-conservation and necessary illuminating effect is provided.
The utility model content
The utility model provides a kind of and can open or powered-down the light-operated circuit that temperature rise is few, reliability is high automatically according to the strong and weak of light at above problem.
For overcoming the above problems, the technical scheme that the utility model adopted is: a kind of light-operated circuit is characterized in that: described light-operated circuit also comprises:
Comparison circuit is in order to the variable signal that receives light and carry out comparison process, from output output control signal;
Control circuit is electrically connected with comparison circuit, controls the break-make of power supply in order to the control signal that receives comparison circuit output;
Start power circuit, be electrically connected, be used for starting required power supply for comparison circuit provides with comparison circuit;
Auxiliary power circuit is electrically connected with comparison circuit, and behind circuit working, auxiliary power circuit provides power supply for comparison circuit, starts power circuit and quits work.
Further improvement in the technical proposal:
Described comparison circuit comprises operational amplifier IC, photo resistance R2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, the wherein end of photo resistance R2 and the output that starts power circuit, one end of the positive power source terminal of operational amplifier IC and resistance R 6 connects, the other end of photo resistance R2 is through the resistance R 3 of series connection, resistance R 4 is connected with the negative power end of operational amplifier IC and an end of resistance R 7, the contact of resistance R 3 and resistance R 4 is connected with the inverting input of operational amplifier IC, and the output of operational amplifier IC connects the normal phase input end of operational amplifier IC and the other end of resistance R 6 and resistance R 7 through resistance R 5.
Described control circuit comprises controllable silicon VT, diode VD2, diode VD3, diode VD4, diode VD5, resistance R 8 and resistance R 9, the control utmost point of controllable silicon VT connects an end of resistance R 8 and resistance R 9, the output of another termination operational amplifier IC of resistance R 8, the other end of resistance R 9, the negative electrode of controllable silicon VT, the positive pole of the positive pole of diode VD2 and diode VD5 is connected with the negative power end of operational amplifier IC, the negative pole of diode VD5 is connected with the positive pole of diode VD4, the negative pole of diode VD4, the negative pole of diode VD3 is connected with the anode of controllable silicon VT, the positive pole of diode VD3, the negative pole of diode VD2 connects external power supply.
Described startup power circuit comprises resistance R 1, diode VD1 and capacitor C 1, the positive pole of diode VD1 connects external power supply through resistance R 1, the negative pole of diode VD1 connects an end of capacitor C 1 and the positive power source terminal of operational amplifier IC, the negative power end of the other end concatenation operation amplifier IC of capacitor C 1.
Described auxiliary power circuit comprises inductance L 1, capacitor C 2, resistance R 10, diode VD7 and voltage stabilizing didoe VD6, one end of inductance L 1 connects external power supply, the other end is connected the negative pole of voltage stabilizing didoe VD6 and the positive pole of diode VD7 through capacitor C 2 with resistance R 10, the negative pole of diode VD7 connects the positive power source terminal of operational amplifier IC.
The input of described external power supply is parallel with piezo-resistance R.
The utility model is taked above technical scheme, compared with prior art, has the following advantages:
(1) can the break-make of power supply be controlled automatically according to the variation of light, use convenient.
(2) setting of auxiliary power circuit, light-operated circuit is started after, start power circuit and quit work automatically, and provide power supply for comparison circuit by auxiliary power circuit, reduced the temperature rise that control circuit produced, improved the reliability of entire circuit.
The utility model is described in further detail with enforcement below in conjunction with accompanying drawing.
Description of drawings
Accompanying drawing is the circuit diagram of light-operated circuit among the utility model embodiment.
Among the figure,
The 1-comparison circuit, the 2-control circuit, 3-starts power circuit, 4-auxiliary power circuit.
Embodiment
Embodiment, accompanying drawing is the circuit diagram of light-operated circuit, comprises comparison circuit 1, in order to the variable signal that receives light and carry out comparison process, from output output control signal;
Control circuit 2 is electrically connected with comparison circuit 1, controls the break-make of power supply in order to the control signal that receives comparison circuit 1 output;
Start power circuit 3, be electrically connected, be used for starting required power supply for comparison circuit 1 provides with comparison circuit 1;
Auxiliary power circuit 4 is electrically connected with comparison circuit 1, and behind circuit working, auxiliary power circuit 4 provides power supply for comparison circuit 1, starts power circuit 3 and quits work.
Start power circuit 3 and comprise resistance R 1, diode VD1 and capacitor C 1, the positive pole of diode VD1 connects the terminal L of external power supply through resistance R 1, the negative pole of diode VD1 connects an end of capacitor C 1 and the positive power source terminal of operational amplifier IC, the negative power end of the other end concatenation operation amplifier IC of capacitor C 1, during startup, after diode VD1 halfwave rectifier, produce low-voltage dc voltage in capacitor C 1 by AC power, IC provides power supply for operational amplifier.
Comparison circuit 1 comprises operational amplifier IC, photo resistance R2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, operational amplifier IC is that model is LM358, the end of photo resistance R2 is connected with an end of the positive power source terminal of operational amplifier IC and resistance R 6, the other end of photo resistance R2 is through the resistance R 3 of series connection, resistance R 4 is connected with the negative power end of operational amplifier IC and an end of resistance R 7, the contact of resistance R 3 and resistance R 4 is connected with the inverting input of operational amplifier IC, and the output of operational amplifier IC connects the normal phase input end of operational amplifier IC and the other end of resistance R 6 and resistance R 7 through resistance R 5.
Control circuit 2 comprises controllable silicon VT, diode VD2, diode VD3, diode VD4, diode VD5, resistance R 8 and resistance R 9, the control utmost point of controllable silicon VT connects an end of resistance R 8 and resistance R 9, the output of another termination operational amplifier IC of resistance R 8, the other end of resistance R 9, the negative electrode of controllable silicon VT, the positive pole of the positive pole of diode VD2 and diode VD5 is connected with the negative power end of operational amplifier IC, the negative pole of diode VD5 is connected with the positive pole of face terminals N ' and diode VD4, the negative pole of diode VD4, the negative pole of diode VD3 is connected with the anode of controllable silicon VT, the positive pole of diode VD3, the negative pole of diode VD2 connects the terminal N of external power supply.
Auxiliary power circuit 4 comprises inductance L 1, capacitor C 2, resistance R 10, diode VD7 and voltage stabilizing didoe VD6, one end of inductance L 1 connects external power supply, the other end is connected the negative pole of voltage stabilizing didoe VD6 and the positive pole of diode VD7 through capacitor C 2 with resistance R 10, the negative pole of diode VD7 connects the positive power source terminal of operational amplifier IC.
Be parallel with piezo-resistance R between the terminal L of external power supply and the terminal N, be used for preventing that the thunder and lightning strong jamming from damaging ballast, electric ballast is connected between terminal L and the terminal N '.
Input voltage obtains 12V on capacitor C 1 after resistance R 1, diode VD1 rectification direct voltage provides power supply for operational amplifier IC, the voltage that obtains after the voltage divider dividing potential drop of being made up of resistance R 6, resistance R 7 is added to the in-phase input end of operational amplifier IC, IC provides reference voltage for operational amplifier, the voltage that obtains after the voltage divider dividing potential drop of being made up of photo resistance R2, resistance R 3 and resistance R 4 is added to the inverting input of operational amplifier IC, and this voltage is subjected to the control of light power.
When light was dark, it is big that the resistance of photo resistance R2 becomes, the inverting input input voltage step-down of operational amplifier IC, and the output voltage of operational amplifier IC output uprises, and makes controllable silicon VT1 conducting, at this moment terminal N and terminal N ' connection.
Its conducting circuit is as follows:
When L for just, N when negative, by L → return N ' → VD4 → VT1 → VD2 → N through load,
When N for just, L when negative, return L by N → VD3 → VT1 → VD5 → N ' through load, like this since, power connection, lamp obtain power supply and luminous.
When light was bright, photo resistance R2 resistance diminished, and the inverting input input voltage of operational amplifier IC uprises, the output voltage step-down of operational amplifier IC output, and no longer conducting of controllable silicon VT1, at this moment terminal N and terminal N ' are obstructed, and lamp goes out.
Behind circuit working, resistance R 1, diode VD1 no current pass through, auxiliary winding L1 by the ballast inductance in the half-bridge inversion circuit output circuit of electric ballast passes through capacitor C 2 and resistance R 10 step-downs, obtain voltage in capacitor C 1 after diode VD7 rectification and the diode VD6 voltage stabilizing, make operational amplifier IC work.Do the reliability that can reduce temperature rise, improve circuit like this.
This circuit is simple and practical, both can be used for forming incorporate electricity-saving lamp, also can control the input power supply of ballast, the light on and off of control lamp, and cost is lower.
Claims (6)
1. light-operated circuit, it is characterized in that: described light-operated circuit also comprises:
Comparison circuit (1) is in order to the variable signal that receives light and carry out comparison process, from output output control signal;
Control circuit (2) is electrically connected with comparison circuit (1), controls the break-make of power supply in order to the control signal that receives comparison circuit (1) output;
Start power circuit (3), be electrically connected, be used for starting required power supply for comparison circuit (1) provides with comparison circuit (1);
Auxiliary power circuit (4) is electrically connected with comparison circuit (1), and behind circuit working, auxiliary power circuit (4) provides power supply for comparison circuit (1), starts power circuit (3) and quits work.
2. a kind of light-operated circuit as claimed in claim 1, it is characterized in that: described comparison circuit (1) comprises operational amplifier IC, photo resistance R2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, the wherein end of photo resistance R2 and the output that starts power circuit (3), one end of the positive power source terminal of operational amplifier IC and resistance R 6 connects, the other end of photo resistance R2 is through the resistance R 3 of series connection, resistance R 4 is connected with the negative power end of operational amplifier IC and an end of resistance R 7, the contact of resistance R 3 and resistance R 4 is connected with the inverting input of operational amplifier IC, and the output of operational amplifier IC connects the normal phase input end of operational amplifier IC and the other end of resistance R 6 and resistance R 7 through resistance R 5.
3. a kind of light-operated circuit as claimed in claim 2, it is characterized in that: described control circuit (2) comprises controllable silicon VT, diode VD2, diode VD3, diode VD4, diode VD5, resistance R 8 and resistance R 9, the control utmost point of controllable silicon VT connects an end of resistance R 8 and resistance R 9, the output of another termination operational amplifier IC of resistance R 8, the other end of resistance R 9, the negative electrode of controllable silicon VT, the positive pole of the positive pole of diode VD2 and diode VD5 is connected with the negative power end of operational amplifier IC, the negative pole of diode VD5 is connected with the positive pole of diode VD4, the negative pole of diode VD4, the negative pole of diode VD3 is connected with the anode of controllable silicon VT, the positive pole of diode VD3, the negative pole of diode VD2 connects external power supply.
4. a kind of light-operated circuit as claimed in claim 2, it is characterized in that: described startup power circuit (3) comprises resistance R 1, diode VD1 and capacitor C 1, the positive pole of diode VD1 connects external power supply through resistance R 1, the negative pole of diode VD1 connects an end of capacitor C 1 and the positive power source terminal of operational amplifier IC, the negative power end of the other end concatenation operation amplifier IC of capacitor C 1.
5. a kind of light-operated circuit as claimed in claim 2, it is characterized in that: described auxiliary power circuit (4) comprises inductance L 1, capacitor C 2, resistance R 10, diode VD7 and voltage stabilizing didoe VD6, one end of inductance L 1 connects external power supply, the other end is connected the negative pole of voltage stabilizing didoe VD6 and the positive pole of diode VD7 through capacitor C 2 with resistance R 10, the negative pole of diode VD7 connects the positive power source terminal of operational amplifier IC.
6. a kind of light-operated circuit as claimed in claim 1 is characterized in that: the input of described external power supply is parallel with piezo-resistance R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202402314U CN201509345U (en) | 2009-10-23 | 2009-10-23 | Light-operated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202402314U CN201509345U (en) | 2009-10-23 | 2009-10-23 | Light-operated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201509345U true CN201509345U (en) | 2010-06-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202402314U Expired - Fee Related CN201509345U (en) | 2009-10-23 | 2009-10-23 | Light-operated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201509345U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759717A (en) * | 2011-04-28 | 2012-10-31 | 海洋王照明科技股份有限公司 | Lamp and discharge extinction alarming circuit thereof |
| CN103292972A (en) * | 2012-03-01 | 2013-09-11 | 海洋王（东莞）照明科技有限公司 | Secondary impact prevention circuit and impact testing device |
| CN103323347A (en) * | 2012-03-22 | 2013-09-25 | 海洋王（东莞）照明科技有限公司 | Anti-secondary impact circuit and its test tool |
| CN103997813A (en) * | 2014-04-02 | 2014-08-20 | 刘胜泉 | Light-control hysteresis circuit for LED (Light-Emitting Diode) lamp |
| CN110913530A (en) * | 2019-10-30 | 2020-03-24 | 杭州优特电源有限公司 | Dimming LED driver |
-
2009
- 2009-10-23 CN CN2009202402314U patent/CN201509345U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759717A (en) * | 2011-04-28 | 2012-10-31 | 海洋王照明科技股份有限公司 | Lamp and discharge extinction alarming circuit thereof |
| CN102759717B (en) * | 2011-04-28 | 2015-06-03 | 海洋王照明科技股份有限公司 | Lamp and discharge extinction alarming circuit thereof |
| CN103292972A (en) * | 2012-03-01 | 2013-09-11 | 海洋王（东莞）照明科技有限公司 | Secondary impact prevention circuit and impact testing device |
| CN103292972B (en) * | 2012-03-01 | 2016-09-07 | 海洋王（东莞）照明科技有限公司 | Anti-secondary pulse circuit and apparatus for impact testing |
| CN103323347A (en) * | 2012-03-22 | 2013-09-25 | 海洋王（东莞）照明科技有限公司 | Anti-secondary impact circuit and its test tool |
| CN103323347B (en) * | 2012-03-22 | 2016-09-14 | 海洋王（东莞）照明科技有限公司 | A kind of anti-secondary pulse circuit and test fixture thereof |
| CN103997813A (en) * | 2014-04-02 | 2014-08-20 | 刘胜泉 | Light-control hysteresis circuit for LED (Light-Emitting Diode) lamp |
| CN110913530A (en) * | 2019-10-30 | 2020-03-24 | 杭州优特电源有限公司 | Dimming LED driver |
| CN110913530B (en) * | 2019-10-30 | 2021-08-27 | 杭州优特电源有限公司 | Dimming LED driver |
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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: 20100616 Termination date: 20141023 |
|
| EXPY | Termination of patent right or utility model |