CN202095127U - Light-operated night light circuit - Google Patents
Light-operated night light circuit Download PDFInfo
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- CN202095127U CN202095127U CN2011201797874U CN201120179787U CN202095127U CN 202095127 U CN202095127 U CN 202095127U CN 2011201797874 U CN2011201797874 U CN 2011201797874U CN 201120179787 U CN201120179787 U CN 201120179787U CN 202095127 U CN202095127 U CN 202095127U
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Abstract
The utility model relates to a light-operated night light circuit which controls the on/off state of a night light based on the light intensity and combines a high return difference light sensation circuit with an LED illuminant. The light-operated night light circuit is composed of a current-limiting rectifier circuit (1), an LED luminescent circuit (2), and a light sensation switch circuit (3). The current-limiting rectifier circuit (1) is electrically connected in series with the LED luminescent circuit (2), and the light sensation switch circuit (3) is electrically connected in parallel with the LED circuit. The light-operated night light circuit can overcome the following problems of a small power light-operated light: the efficiency is low; certain pollution can be generated to a power supply; a current-limiting resistor can be easily burned out; and the flicker problem is prone to occur.
Description
Technical field
The utility model relates to a kind of circuit that utilizes the strong and weak control of light lamp to extinguish or light, and especially has the incorporated light-operated night-luminescent lamp circuit of high return difference light sensation circuit and LED luminous element.
Background technology
At present, known national patent 200920187513.2 " a kind of light-operated lamp " has following three defect: the one, when daytime, lamp extinguished, photosensitive control circuit (2) bears higher voltage, and power consumption is bigger, as low-power lighting, the lamp overall efficiency is low, is unfavorable; The 2nd, when lamp experience extraneous light from bright to dark or from dark during to bright transition stage, controllable silicon in the photosensitive control circuit (2) is by extremely full conducting phase of initial conducting or the extremely initial conducting phase of full conducting, sine-wave current is cut, serious defect appears, under the effect of discharging and recharging of step-down rectifying circuit (1) electric capacity, bigger impulse current is arranged in its loop, both power supply was formed certain pollution, burn out the current-limiting resistance of self again easily; The 3rd, this lamp by day with night luminous intensity transition stage the time, anti-interference is poor, is subject to self luminous influence, light flash occurs.
Summary of the invention
There is the deficiency of these above-mentioned three kinds of defect in existing in order to overcome " a kind of light-operated lamp ", the utility model provides a kind of light-operated night-luminescent lamp circuit, can realize utilizing the strong and weak control of light lamp to extinguish or light, the efficient of the light-operated lamp of small-power that can solve " a kind of light-operated lamp " again is low, and power supply is formed certain pollution, burns out the current-limiting resistance of self and be prone to these three defect of light flash easily again.
The technical scheme that its technical problem that solves the utility model adopts is: it is connected with LED illuminating circuit (2) electricity by rectifier circuit current limiting (1), and light sensation switching circuit (3) composes in parallel with LED illuminating circuit (2) electricity.Rectifier circuit current limiting (1) is in parallel with electric capacity (C1) electricity by resistance (R2), the rectifier bridge electricity series connection of forming through resistance (R1) and diode (T1), (T2), (T3), (T4) again, the diode (T2) in the rectifier circuit current limiting (1) and the electric connection point of diode (T3) be electrically connected composition publicly.Diode (T2) is a dc power output end with the electric connection point of diode (T3).LED illuminating circuit (2) is by LED luminous tube (T5), (T6) ... (Tn-1), (Tn) electricity series connection, in parallel with electric capacity (C2) electricity again, switch (K) end is electrically connected the power end that is subjected to of LED luminous tube (T5), the positive pole that the other end is electrically connected certain LED luminous tube is electrically connected with the negative electricity series connection point of LED luminous tube, electric capacity (C2) and LED luminous tube (Tn) electric connection point be electrically connected composition publicly.Light sensation switching circuit (3) is connected into voltage stabilizing circuit by resistance (R3) and pressurizer (D1), is used by pressurizer (D1) two ends output stabilized voltage power supply power supply road; Resistance (R5) end and triode (D4), (D5) collector electrode is electrically connected, resistance (R5) other end is electrically connected with resistance (R3) end, triode (D4) emitter is electrically connected with triode (D5) base stage, photo resistance (R8) end, resistance (R9) end, electric capacity (C3) end is electrically connected with the base stage of triode (D2), triode (D2), (D3) emitter is electrically connected with resistance (R6) end, resistance (R7) end, triode (D2) collector electrode is electrically connected with the base stage of triode (D3), resistance (R4) end, triode (D3) collector electrode is electrically connected with the base stage of triode (D4), photo resistance (R8) other end, resistance (R7) other end, resistance (R4) other end is electrically connected resistance (R9) other end with resistance (R3) other end and pressurizer (D1) other end electric connection point, resistance (R6) other end, electric capacity (C3) other end, pressurizer (D1) end, triode (D5) emitter be electrically connected composition publicly.Triode (D2), (D3), photo resistance (R8), electric capacity (C3), form high return difference light sensation circuit with resistance (R9), resistance (R4), resistance (R7), resistance (R6).When the deepening of lamp ambient light, it is big that photo resistance (R8) resistance value in the high return difference light sensation circuit becomes, when the base voltage of triode (D2) is reduced to bright lamp threshold value, triode (D2) degree of depth is ended, triode (D3) degree of depth is saturated, triode (D3) collector electrode output low level, and triode (D4), triode (D5) end, LED illuminating circuit (2) two ends are high level, and lamp is lighted.Push switch (K) opens circuit or path switch (K), realizes the strong or low light level shift of lamp.When the lamp ambient light brightens, photo resistance (R8) resistance value in the high return difference light sensation circuit diminishes, when the base voltage of triode (D2) is increased to the light-off threshold value, triode (D2) degree of depth is saturated, triode (D3) degree of depth is ended, circuit presents high return difference characteristics, triode (D3) collector electrode output high level, triode (D4), (D5) is saturated for triode, because the metering function of rectifier circuit current limiting (1), the saturation voltage of triode (D5) collector electrode and the voltage drop sum on the resistance (R5) are lower than a LED luminous voltage, make LED illuminating circuit (2) two ends be low level, lamp extinguishes, and this moment, actual power loss of the present utility model just became very low; The lamp ambient light from bright to dark or from dark during to bright slow transition, owing to adopted high return difference light sensation circuit, the characteristics that high return difference upset is arranged, unless the light of lamp ambient light and half-light Strength Changes are very big, circuit does not allow to be subject to influence of self light and upset easily, the anti-interference of circuit is improved, and effectively prevents light flash; Because sine-wave current is not subjected to the controllable silicon conducting like that to the cutting of electric current, so the utility model not have pollution substantially to power supply.Thereby it is low to reach the efficient that overcomes the light-operated lamp of small-power, and power supply is formed certain pollution, burns out the current-limiting resistance of self and be prone to the purpose of three defect of light flash easily again.
The beneficial effects of the utility model are, power consumption is low, the efficient height, and tunable optical, pollution-free to power supply, reliable, convenient being suitable for.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 is light sensation switching circuit (3) schematic diagram among another embodiment of the utility model.
Fig. 4 is light sensation switching circuit (3) schematic diagram among the 3rd embodiment of the utility model.
1. rectifier circuit current limitings among the figure, 2.LED illuminating circuit, 3. light sensation switching circuit.
Embodiment
Rectifier circuit current limiting among the figure (1) is connected with LED illuminating circuit (2) electricity, and light sensation switching circuit (3) is in parallel with LED illuminating circuit (2) electricity.Rectifier circuit current limiting (1) is in parallel with electric capacity (C1) electricity by resistance (R2), the rectifier bridge electricity series connection of forming through resistance (R1) and diode (T1), (T2), (T3), (T4) again, the diode (T2) in the rectifier circuit current limiting (1) and the electric connection point of diode (T3) be electrically connected composition publicly.Diode (T2) is a dc power output end with the electric connection point of diode (T3).LED illuminating circuit (2) is by LED luminous tube (T5), (T6) ... (Tn-1), (Tn) electricity series connection, in parallel with electric capacity (C2) electricity again, switch (K) end is electrically connected the power end that is subjected to of LED luminous tube (T5), the positive pole that the other end is electrically connected certain LED luminous tube is electrically connected with the negative electricity series connection point of LED luminous tube, electric capacity (C2) and LED luminous tube (Tn) electric connection point be electrically connected composition publicly.Light sensation switching circuit (3) is by resistance (R5) end and triode (D4), (D5) collector electrode is electrically connected, resistance (R5) other end is electrically connected with resistance (R3) end, triode (D4) emitter is electrically connected with triode (D5) base stage, photo resistance (R8) end, resistance (R9) end, electric capacity (C3) end is electrically connected with the base stage of triode (D2), triode (D2), (D3) emitter is electrically connected with resistance (R6) end, resistance (R7) end, triode (D2) collector electrode is electrically connected with the base stage of triode (D3), resistance (R4) end, triode (D3) collector electrode is electrically connected with the base stage of triode (D4), photo resistance (R8) other end, resistance (R7) other end, resistance (R4) other end is electrically connected resistance (R9) other end with resistance (R3) other end and pressurizer (D1) other end electric connection point, resistance (R6) other end, electric capacity (C3) other end, pressurizer (D1) end, triode (D5) emitter be electrically connected composition publicly.The LED luminous tube of connect with switch (K) electricity, LED luminous tube number of its electricity series connection are one between several, are that 1～5 times of switch (K) the electricity LED luminous tube number of connecting is comparatively suitable by the LED luminous tube number of the electric short circuit in parallel of switch (K).The photosensitive resistance of semiconductor is used in photo resistance (R8) in the light sensation switching circuit (3).
Light sensation switching circuit (3) substitutes the high magnification multiple tube that triode (D4), (D5) are formed by a Darlington transistor among another embodiment.
Photodiode is used in the photo resistance (R8) of light sensation switching circuit (3) among another embodiment of Fig. 3.
Phototriode is used in the photo resistance (R8) of light sensation switching circuit (3) among the 3rd embodiment of Fig. 4.
Claims (7)
1. light-operated night-luminescent lamp circuit, rectification circuit is in parallel with LED illuminating circuit electricity, it is characterized in that: connect by rectifier circuit current limiting (1) and LED illuminating circuit (2) are electric, light sensation switching circuit (3) and LED illuminating circuit (2) electricity compose in parallel.
2. light-operated night-luminescent lamp circuit according to claim 1, it is characterized in that: light sensation switching circuit (3) is by resistance R 5 one ends and triode D4, the collector electrode of D5 is electrically connected, resistance R 5 other ends are electrically connected with resistance R 3 one ends, triode D4 emitter is electrically connected with triode D5 base stage, photo resistance R8 one end, resistance R 9 one ends, capacitor C 3 one ends are electrically connected with the base stage of triode D2, triode D2, the emitter of D3 is electrically connected with resistance R 6 one ends, resistance R 7 one ends, triode D2 collector electrode is electrically connected with the base stage of triode D3, resistance R 4 one ends, triode D3 collector electrode is electrically connected with the base stage of triode D4, the photo resistance R8 other end, resistance R 7 other ends, resistance R 4 other ends are electrically connected resistance R 9 other ends with resistance R 3 other ends and pressurizer D1 other end electric connection point, resistance R 6 other ends, capacitor C 3 other ends, pressurizer D1 one end, triode D5 emitter be electrically connected composition publicly.
3. light-operated night-luminescent lamp circuit according to claim 1, it is characterized in that: LED illuminating circuit (2) is by LED luminous tube T5, T6 ... the series connection of Tn-1, Tn electricity, in parallel with capacitor C 2 electricity again, K switch one end is electrically connected the power end that is subjected to of LED luminous tube T5, the positive pole that the other end is electrically connected certain LED luminous tube is electrically connected with the negative electricity series connection point of LED luminous tube, capacitor C 2 and LED luminous tube Tn electric connection point be electrically connected composition publicly.
4. light-operated night-luminescent lamp circuit according to claim 1 is characterized in that: substitute the high magnification multiple tube that triode D4, D5 form in the light sensation switching circuit (3) by a Darlington transistor.
5. light-operated night-luminescent lamp circuit according to claim 1 is characterized in that: photo resistance R8 is the photosensitive resistance of semiconductor in the light sensation switching circuit (3).
6. light-operated night-luminescent lamp circuit according to claim 1 is characterized in that: photo resistance R8 is a photodiode in the light sensation switching circuit (3).
7. light-operated night-luminescent lamp circuit according to claim 1 is characterized in that: photo resistance R8 is a phototriode in the light sensation switching circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201797874U CN202095127U (en) | 2011-05-31 | 2011-05-31 | Light-operated night light circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201797874U CN202095127U (en) | 2011-05-31 | 2011-05-31 | Light-operated night light circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202095127U true CN202095127U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201797874U Expired - Fee Related CN202095127U (en) | 2011-05-31 | 2011-05-31 | Light-operated night light circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202095127U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739226A (en) * | 2012-07-02 | 2012-10-17 | 无锡四方电炉有限公司 | Light-operated switch |
| CN102811529A (en) * | 2011-05-31 | 2012-12-05 | 邓加慧 | Light-operated night-light circuit |
| CN108366468A (en) * | 2018-05-18 | 2018-08-03 | 苏州华铭威智能科技有限公司 | A kind of scrubbing brush light source intelligent adjusting circuit |
-
2011
- 2011-05-31 CN CN2011201797874U patent/CN202095127U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811529A (en) * | 2011-05-31 | 2012-12-05 | 邓加慧 | Light-operated night-light circuit |
| CN102739226A (en) * | 2012-07-02 | 2012-10-17 | 无锡四方电炉有限公司 | Light-operated switch |
| CN102739226B (en) * | 2012-07-02 | 2014-10-22 | 无锡四方电炉有限公司 | Light-operated switch |
| CN108366468A (en) * | 2018-05-18 | 2018-08-03 | 苏州华铭威智能科技有限公司 | A kind of scrubbing brush light source intelligent adjusting circuit |
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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: 20111228 Termination date: 20140531 |