CN103906293A - Control circuit of indicating lamp - Google Patents
Control circuit of indicating lamp Download PDFInfo
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- CN103906293A CN103906293A CN201210579538.3A CN201210579538A CN103906293A CN 103906293 A CN103906293 A CN 103906293A CN 201210579538 A CN201210579538 A CN 201210579538A CN 103906293 A CN103906293 A CN 103906293A
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Abstract
The embodiment of the invention discloses a control circuit of an indicating lamp. The control circuit includes a photosensitive control circuit and the indicating lamp. A first port of the photosensitive control circuit is connected with a cathode of a power supply. A second port of the photosensitive control circuit is connected with a first input port of the indicating lamp. The photosensitive control circuit controls electrical signals, which are output by the cathode of the power supply, to be transmitted to the first input port of the indicating lamp according to intensity control of received external light so as to control the state of the indicating lamp. A second input port of the indicating lamp is used for being connected with an anode of the power supply. The control circuit of the indicating lamp is capable of controlling the light-on state and light-off state of a road-sign indicating lamp according to environment change.
Description
Technical field
The present invention relates to circuit field, relate in particular to a kind of indicating lamp control circuit.
Background technology
At present, the road sign indicator lights using on road is mostly by Artificial Control, as at dusk people just control road sign indicator lights in luminance, to morning people just control road sign indicator lights in extinguishing state.For example cannot realize like this, according to the luminance of the variation control road sign indicator lights of environment (: light intensity) and extinguish state.
Summary of the invention
The embodiment of the present invention provides a kind of indicating lamp control circuit, can realize according to the luminance of the variation control road sign indicator lights of environment and extinguish state.
In order to solve the problems of the technologies described above, a kind of indicating lamp control circuit that the embodiment of the present invention provides, comprising: photosensitive control circuit and indicator light, wherein:
The first port of described photosensitive control circuit is connected with the negative pole of power supply, the second port of described photosensitive control circuit is connected with the first input end mouth of described indicator light, described photosensitive control circuit is the first input end mouth to described indicator light according to the electric signal transmission of the negative pole output of power supply described in the strength control control of the extraneous light receiving, to control the state of described indicator light;
The second input port of described indicator light is for being connected with the positive pole of described power supply.
The embodiment of the present invention, the first port of photosensitive control circuit is connected with the negative pole of power supply, and the second port of described photosensitive control circuit is connected with the first input end mouth of described indicator light; The second input port of indicator light is for being connected with the positive pole of described power supply.Can realize like this according to the luminance of the variation control road sign indicator lights of environment and extinguish state.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of indicating lamp control circuit of providing of the embodiment of the present invention;
Fig. 2 is the structural representation of the another kind of indicating lamp control circuit that provides of the embodiment of the present invention;
Fig. 3 is the structural representation of the another kind of indicating lamp control circuit that provides of the embodiment of the present invention;
Fig. 4 is the structural representation of the another kind of indicating lamp control circuit that provides of the embodiment of the present invention;
Fig. 5 is the circuit diagram of the another kind of indicating lamp control circuit that provides of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation of a kind of indicating lamp control circuit of providing of the embodiment of the present invention, as shown in Figure 1, comprising: photosensitive control circuit 11 and indicator light 12, wherein,
The first port of photosensitive control circuit 11 is connected with the negative pole of power supply, the second port of photosensitive control circuit 11 is connected with the first input end mouth of indicator light 12, photosensitive control circuit 11 is the first input end mouth to indicator light 12 according to the electric signal transmission of the negative pole output of power supply described in the strength control control of the extraneous light receiving, to control the state of indicator light 12;
The second input port of indicator light 12 is for being connected with the positive pole of described power supply.
Optionally, in the time that photosensitive control circuit 11 receives outside light and is less than a certain threshold value, photosensitive control circuit 11 is the first input end mouth to indicator light 12 with regard to the electric signal transmission of the negative pole output of power supply, with control indicator light 12 in luminance; In the time that photosensitive control circuit 11 receives outside light and is greater than above-mentioned threshold value, photosensitive control circuit 11 stops transferring to the first input end mouth of indicator light 12 with regard to the signal of telecommunication of the negative pole output of power supply, with control indicator light 12 in extinguishing state.Wherein, the parameter that above-mentioned threshold value can change photosensitive control circuit 11 changes above-mentioned threshold value, and the size of above-mentioned threshold value is by the setting parameter of photosensitive control circuit 11.
Optionally, indicator light 22 is road sign indicator lights.
The present embodiment, the first port of photosensitive control circuit is connected with the negative pole of power supply, and the second port of described photosensitive control circuit is connected with the first input end mouth of described indicator light; The second input port of indicator light is for being connected with the positive pole of described power supply.Can realize like this according to the luminance of the variation control road sign indicator lights of environment and extinguish state.
Fig. 2 is the structural representation that the embodiment of the present invention provides another kind of indicating lamp control circuit, as shown in Figure 2, comprises photosensitive control circuit 21, indicator light 22 and power circuit 23, wherein:
The structure of photosensitive control circuit 21 and indicator light 22 and annexation can be with reference to above-described embodiments.
The output port of solar panel 231 is connected with the input port of solar charging/discharging controller 232, and solar panel 231 is for receiving outside luminous energy, and is electric energy by the transform light energy of reception;
The first output port of solar charging/discharging controller 232 is connected with the input port of storage battery 233, the second output port of solar charging/discharging controller 232 is as the positive pole of power supply, the second output port of solar charging/discharging controller 232 is connected with the second input port of indicator light 22, the 3rd output port of solar charging/discharging controller 232 is as the negative pole of power supply, and the 3rd output port of solar charging/discharging controller 232 is connected with the first port of photosensitive control circuit 21; Solar charging/discharging controller 232 charges for the output electric energy accumulators 233 of controlling solar panel 231, and for controlling the output of the electric energy that storage battery stores.
Optionally, the input port of the output port of solar panel 231 and solar charging/discharging controller 232, and the first output port of solar charging/discharging controller 232 and the input port of storage battery 233 be all to comprise two ports, i.e. positive and negative two ports.
Optionally, by day, when outside light intensity is larger, solar panel 231 absorbs light, and by the communication converting electrical energy of light, can storage battery 233 be charged charging-discharging controller 232 through sun.Between the lights or evening, hour, solar panel 231 stops absorbing light to outside light intensity, and sun can be controlled the electric energy output that storage battery 233 is stored by charging-discharging controller 232.
As the optional execution mode of one, as shown in Figure 3, photosensitive control circuit 21 comprises:
The first switching circuit 211 and second switch circuit 212, wherein:
The first port of the first switching circuit 211 is connected (for example: be connected with the second output port of solar charging/discharging controller 232) with the positive pole of power supply, the second port of the first switching circuit 211 is connected (for example: be connected with the 3rd output port of solar charging/discharging controller 232) with the negative pole of power supply, the 3rd port of the first switching circuit 211 is connected with the 3rd port of second switch circuit 212; The first switching circuit 211 is according to the first port of strength control the first switching circuit 211 and the 3rd port conducting and the disconnection of the first switching circuit of the extraneous light receiving;
Optionally, for example, in the time that extraneous light intensity is less than a certain threshold value, control the 3rd port conducting of the first port and first switching circuit of the first switching circuit 211, in the time that extraneous light intensity is greater than a certain threshold value, control the 3rd port disconnection of the first port and first switching circuit of the first switching circuit 211.
The first port of second switch circuit 212 is connected (for example: be connected with the 3rd output port of solar charging/discharging controller 232) with the negative pole of power supply, the second port of second switch circuit 212 is connected with the first input end mouth of indicator light 22; Second switch circuit 212, for when the first port of the first switching circuit 211 and the 3rd port conducting of the first switching circuit, is controlled the first port of second switch circuit 212 and the second port conducting of second switch circuit 212; In the time of the first port of the first switching circuit 211 and the 3rd port disconnection of the first switching circuit 211, control the second port disconnection of the first port and the second switch circuit 212 of second switch circuit 212.
Optionally, in the time of the first port of the first switching circuit 211 and the 3rd port conducting of the first switching circuit, control the first port of second switch circuit 212 and the second port conducting of second switch circuit 212, just energising of indicator light 22 like this, be that the signal of power cathode output is transferred to indicator light 22 by second switch 212, indicator light 22 is just in luminance.In the time of the first port of the first switching circuit 211 and the 3rd port disconnection of the first switching circuit 211, control the second port disconnection of the first port and the second switch circuit 212 of second switch circuit 212.Indicator light 22 is with regard to no power like this, and second switch 212 does not transfer to indicator light 22 by the signal of power cathode output, and indicator light 22 is just in extinguishing state.
Optionally, the first switching circuit 211 comprises:
Integrated electronic switch, the first resistance, the second resistance, the first electric capacity and phototriode, wherein:
The first port of integrated electronic switch (, the first port of the first switching circuit 211) be connected (for example: be connected with the second output port of solar charging/discharging controller 232) with the positive pole of power supply, the second port of integrated electronic switch by the first electric capacity (, the second port of the first switching circuit 211) connect (for example: be connected with the 3rd output port of solar charging/discharging controller 232) for the negative pole of power supply, integrated electronic switch the 3rd port (, the 3rd port of the first switching circuit 211) be connected with the 3rd port of second switch circuit 212,
First resistance one end is connected (for example: be connected with the second output port of solar charging/discharging controller 232) with the positive pole of power supply, the first resistance other end is connected with the collector electrode of phototriode;
Second resistance one end is connected with the collector electrode of phototriode, and the second resistance other end is connected with the second port of integrated electronic switch;
The emitter of phototriode is connected (for example: be connected with the 3rd output port of solar charging/discharging controller 232) with the negative pole of power supply.
When the intensity of extraneous light receiving when phototriode is less than a certain threshold value, phototriode is low-resistance, make the lower voltage of second resistance one end, and the second resistance other end is connected with the second port of integrated electronic switch, the voltage of the second port of integrated electronic switch just reduces like this.For example: when integrated electronic switch is the electronic switch of TWH8778 model, as long as the voltage of the second port of integrated electronic switch is less than 1.6V, the 3rd port of the first port of integrated electronic switch and integrated electronic switch is with regard to conducting, i.e. the 3rd port conducting of the first port of the first switching circuit 211 and the first switching circuit.
When the intensity of extraneous light receiving when phototriode is greater than above-mentioned threshold value, the collector and emitter of phototriode is approximately off-state, make the voltage of second resistance one end increase, and the second resistance other end is connected with the second port of integrated electronic switch, the voltage of the second port of integrated electronic switch just rises like this.For example: when integrated electronic switch is the electronic switch of TWH8778 model, as long as the voltage of the second port of integrated electronic switch is greater than 1.6V, the 3rd port of the first port of integrated electronic switch and integrated electronic switch just disconnects, and the 3rd port of the first port of the first switching circuit 211 and the first switching circuit disconnects.
Optionally, second switch circuit 212 comprises:
Bidirectional thyristor, the first main electrode of bidirectional thyristor (, the second port of second switch circuit 212) be connected with the first input end mouth of indicator light 22, the second main electrode of described bidirectional thyristor (, the first port of second switch circuit 212) be connected (for example: be connected with the 3rd output port of solar charging/discharging controller 232) with the negative pole of power supply, the grid (, the 3rd port of second switch circuit 212) of bidirectional thyristor is connected with the 3rd port of described the first switching circuit.In the time of the first port of the first switching circuit 211 and the 3rd port conducting of the first switching circuit, the first main electrode of bidirectional thyristor and the second main electrode, with regard to conducting, are controlled the second port conducting of the first port and the second switch circuit 212 of second switch circuit 212.
As the optional execution mode of one, as shown in Figure 4, photosensitive control circuit 21 also comprises:
Optionally, in the time that the 3rd port of second switch circuit 212 receives above-mentioned low pulse signal, the second port of the first port of second switch circuit 212 and second switch circuit 212 is interrupted conducting like this, thereby makes indicator light flashing, for a moment luminous, extinguish for a moment.
As the optional execution mode of one, photosensitive control circuit 21 also comprises:
As the optional execution mode of one, photosensitive control circuit 21 also comprises:
Current-limiting circuit 215, the input port of current-limiting circuit 215 is connected with the 3rd port of oscillating circuit 213, and the output port of current-limiting circuit 215 is connected with the 3rd port of second switch circuit 212.
Optionally, oscillating circuit 213 is NE555 oscillators, wherein, 4 and 8 pin of NE555 oscillator connect, and be connected as the second port of oscillating circuit 213 and the 3rd port of the first switching circuit 211, the first port of 1 pin oscillating circuit 213 of NE555 oscillator is connected (for example: be connected with the 3rd output port of solar charging/discharging controller 232) with the negative pole of power supply, the 3rd port of 3 pin oscillating circuits 213 of NE555 oscillator is connected the input port of current-limiting circuit 215 with the 3rd port of second switch circuit 212; 5 pin of NE555 oscillator are connected (for example: be connected with the 3rd output port of solar charging/discharging controller 232) by an electric capacity with the negative pole of power supply; 2 pin and 6 pin of NE555 oscillator connect, and with being the triggering port of oscillating circuit 213 and the 3rd port of bleeder circuit 214; 7 pin of NE555 oscillator are connected between two resistance of bleeder circuit 214.
When the 3rd port of bleeder circuit 214 is connected to 2 pin of NE555 oscillator the triggering signal of the 3rd port output low pulse signal of transmitting for controlling oscillating circuit 213 with 6 pin, 3 of NE555 oscillator is just exported the triggering signal of low pulse signal.
Optionally, bleeder circuit 214 comprises:
The 3rd resistance, adjusted circuit and the second electric capacity, wherein:
The 3rd resistance one end is connected with the 3rd port of the first switching circuit 211, and the second resistance other end is connected with variable-resistance the first port;
Variable-resistance the second port is connected with the positive pole of the second electric capacity, and variable-resistance the 3rd port is connected with the triggering port of oscillating circuit 213;
The negative pole of the second electric capacity is connected (for example: be connected with the 3rd output port of solar charging/discharging controller 232) with the negative pole of power supply.
Wherein, 7 pin of NE555 oscillator are connected between the 3rd resistance and variable resistor.
Optionally, current-limiting circuit 215 comprises:
Diode and the 4th resistance, wherein:
State the positive pole of diode and the 3rd port of oscillating circuit 213 is connected, the negative pole of diode is connected with the 3rd port of second switch circuit 212 by the 4th resistance.
Fig. 5 is the circuit diagram of a kind of indicating lamp control circuit of providing of the embodiment of the present invention, as shown in Figure 5, sun bear battery is connected with sun bear charging-discharging controller, one end of sun bear charging-discharging controller is connected with positive pole and the negative pole of storage battery respectively, the other end of sun bear charging-discharging controller is as positive pole and the negative pole of power supply, to whole control circuit power supply; Indicator light one end is connected with positive source, the other end is connected with the first main electrode of bidirectional thyristor Q1, the second main electrode of bidirectional thyristor Q1 is connected with the negative pole of power supply, the grid of bidirectional thyristor Q1 is connected with 3 pin of oscillator U1 by resistance R 4, diode VD1, in the time that 3 pin of oscillator U1 are exported low pulse signal, the first main electrode of bidirectional thyristor Q1 and the second main electrode of bidirectional thyristor Q1 are with regard to conducting, and indicator light is just switched on like this, thereby is operated in luminance; In addition, 1 pin of integrated electronic switch IC1 is connected with positive source, 5 pin of integrated electronic switch IC1 are connected with the negative pole of power supply by capacitor C 1, and resistance R 1 and phototriode VT1 are connected in series between the positive pole and negative pole of power supply, and 5 pin that resistance R 2 is connected to integrated electronic switch IC1 are between the collector electrode of phototriode VT1; Like this in the time that phototriode VT1 is low-resistance (, the intensity of extraneous light is less than above-mentioned threshold value), the voltage of 5 pin of integrated electronic switch IC1 just reduces, when the voltage of 5 pin of integrated electronic switch IC1 is during lower than 1.6V, 1 pin of integrated electronic switch IC1 and 2 pin of integrated electronic switch IC1 (2 pin and 3 pin of integrated electronic switch IC1 link together) conducting; In the time that phototriode VT1 is high resistant (, the intensity of extraneous light is greater than above-mentioned threshold value), the voltage of 5 pin of integrated electronic switch IC1 just rises, when the voltage of 5 pin of integrated electronic switch IC1 is during higher than 1.6V, 1 pin of integrated electronic switch IC1 and 2 pin of integrated electronic switch IC1 (2 pin and 3 pin of integrated electronic switch IC1 link together) disconnect; 2 pin of integrated electronic switch IC1 are connected with 4 pin of oscillator U1 and 8 pin, and resistance R 3, variable resistor RP1 and capacitor C 2 are connected in series between 2 pin and the negative pole of power supply of integrated electronic switch IC1,2 pin of oscillator U1 and 6 pin are connected in the variable port of variable resistor RP1, here can be by regulating the resistance of variable resistor RP1 to make the voltage of the variable port of RP1 meet the 3 pin output low pulse signals of oscillator U1, and 1 pin of oscillator U1 connects the negative pole of power supply, and 5 pin of oscillator U1 connect the negative pole of electric capacity by capacitor C 3; While needing only 1 pin of integrated electronic switch IC1 and the 2 pin conducting of integrated electronic switch IC1 like this, 3 pin of oscillator U1 are just exported low pulse signal, and 3 pin of oscillator U1 are connected to the grid of bidirectional thyristor Q1 by diode VD1 and resistance R 4, the 2 pin conductings of 1 pin of integrated electronic switch IC1 and integrated electronic switch IC1, the first main electrode of bidirectional thyristor Q1 and the second main electrode be with regard to conducting, i.e. indicator light work luminance; As long as when 2 pin of 1 pin of integrated electronic switch IC1 and integrated electronic switch IC1 disconnect, 3 pin of oscillator U1 are not just exported low pulse signal, and the first main electrode of bidirectional thyristor Q1 and the second main electrode just disconnect, and indicator light is in extinguishing state.
The present embodiment, integrated electronic switch, phototriode, oscillator and bidirectional thyristor just can be realized according to the luminance of the variation control road sign indicator lights of environment and extinguish state.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (10)
1. an indicating lamp control circuit, is characterized in that, comprising: photosensitive control circuit and indicator light, wherein,
The first port of described photosensitive control circuit is connected with the negative pole of power supply, the second port of described photosensitive control circuit is connected with the first input end mouth of described indicator light, described photosensitive control circuit is the first input end mouth to described indicator light according to the electric signal transmission of the negative pole output of power supply described in the strength control of the extraneous light receiving, to control the state of described indicator light;
The second input port of described indicator light is connected with the positive pole of described power supply.
2. indicating lamp control circuit as claimed in claim 1, is characterized in that, described indicating lamp control circuit also comprises:
Power circuit, described power circuit comprises: solar panel, solar charging/discharging controller and storage battery, wherein:
The output port of described solar panel is connected with the input port of described solar charging/discharging controller, and described solar panel is used for receiving outside luminous energy, and is electric energy by the transform light energy of reception;
The first output port of described solar charging/discharging controller is connected with the input port of described storage battery, the second output port of described solar charging/discharging controller is as the positive pole of power supply, the second output port of described solar charging/discharging controller is connected with the second input port of described indicator light, the 3rd output port of described solar charging/discharging controller is as the negative pole of power supply, and the 3rd output port of described solar charging/discharging controller is connected with the first port of described photosensitive control circuit; Described solar charging/discharging controller for the output electric energy of controlling solar panel to described charge in batteries, and for controlling the output of the electric energy that described storage battery stores.
3. indicating lamp control circuit as claimed in claim 1 or 2, is characterized in that, described photosensitive control circuit comprises:
The first switching circuit and second switch circuit, wherein:
The first port of described the first switching circuit is connected with the positive pole of power supply, and the second port of described the first switching circuit is connected with the negative pole of power supply, and the 3rd port of described the first switching circuit is connected with the 3rd port of described second switch circuit; Described the first switching circuit is according to the first port of the first switching circuit and the 3rd port conducting and disconnection of the first switching circuit described in the strength control of the extraneous light receiving;
The first port of described second switch circuit is connected with the negative pole of power supply, and the second port of described second switch circuit is connected with the first input end mouth of described indicator light; Described second switch circuit, in the time of the first port of described the first switching circuit and the 3rd port conducting of the first switching circuit, is controlled the second port conducting of the first port and the described second switch circuit of described second switch circuit; In the time of the first port of described the first switching circuit and the 3rd port disconnection of the first switching circuit, control the second port disconnection of the first port and the described second switch circuit of described second switch circuit.
4. indicating lamp control circuit as claimed in claim 3, is characterized in that, described photosensitive control circuit also comprises:
Oscillating circuit, the first port of described oscillating circuit is connected with the negative pole of power supply, the second port of described oscillating circuit is connected with the 3rd port of described the first switching circuit, the 3rd port of described oscillating circuit is connected with the 3rd port of described second switch circuit, described oscillating circuit is in the time of the first port of described the first switching circuit and the 3rd port conducting of the first switching circuit, the 3rd port of described oscillating circuit is to the 3rd port output low pulse signal of described second switch circuit, so that the second port of the first port of described second switch circuit and described second switch circuit is interrupted conducting.
5. indicating lamp control circuit as claimed in claim 4, is characterized in that, described photosensitive control circuit also comprises:
Bleeder circuit, the first port of described bleeder circuit is connected with the 3rd port of described the first switching circuit, the second port of described bleeder circuit is connected with the negative pole of power supply, the 3rd port of described bleeder circuit is connected with the triggering port of described oscillating circuit, described bleeder circuit is in the time of the first port of described the first switching circuit and the 3rd port conducting of the first switching circuit, and the 3rd port of described bleeder circuit is exported the triggering signal of low pulse signal for controlling the 3rd port of described oscillating circuit to oscillating circuit trigger end port transmission.
6. indicating lamp control circuit as claimed in claim 4, is characterized in that, described photosensitive control circuit also comprises:
Current-limiting circuit, the input port of described current-limiting circuit is connected with the 3rd port of described oscillating circuit, and the output port of described current-limiting circuit is connected with the 3rd port of described second switch circuit.
7. indicating lamp control circuit as claimed in claim 3, is characterized in that, described the first switching circuit comprises:
Integrated electronic switch, the first resistance, the second resistance, the first electric capacity and phototriode, wherein:
The first port of described integrated electronic switch is connected with the positive pole of power supply, the second port of described integrated electronic switch connects for the negative pole of power supply by described the first electric capacity, and described integrated electronic switch the 3rd port is connected with the 3rd port of described second switch circuit;
Described first resistance one end is connected with the positive pole of power supply, and the described first resistance other end is connected with the collector electrode of described phototriode;
Described second resistance one end is connected with the collector electrode of described phototriode, and the described second resistance other end is connected with the second port of integrated electronic switch;
The emitter of described phototriode is connected with the negative pole of power supply.
8. indicating lamp control circuit as claimed in claim 3, is characterized in that, described second switch circuit comprises:
Bidirectional thyristor, the first main electrode of described bidirectional thyristor is connected with the first input end mouth of described indicator light, the second main electrode of described bidirectional thyristor is connected with the negative pole of power supply, and the grid of described bidirectional thyristor is connected with the 3rd port of described the first switching circuit.
9. indicating lamp control circuit as claimed in claim 5, is characterized in that, described bleeder circuit comprises:
The 3rd resistance, adjusted circuit and the second electric capacity, wherein:
Described the 3rd resistance one end is connected with the 3rd port of described the first switching circuit, and the described second resistance other end is connected with described variable-resistance the first port;
Described variable-resistance the second port is connected with the positive pole of described the second electric capacity, and described variable-resistance the 3rd port is connected with the triggering port of described oscillating circuit;
The negative pole of described the second electric capacity is connected with the negative pole of power supply.
10. indicating lamp control circuit as claimed in claim 6, is characterized in that, described current-limiting circuit comprises: diode and the 4th resistance, wherein:
The positive pole of described diode is connected with the 3rd port of described oscillating circuit, and the negative pole of described diode is connected with the 3rd port of described second switch circuit by described the 4th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579538.3A CN103906293A (en) | 2012-12-27 | 2012-12-27 | Control circuit of indicating lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579538.3A CN103906293A (en) | 2012-12-27 | 2012-12-27 | Control circuit of indicating lamp |
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| CN103906293A true CN103906293A (en) | 2014-07-02 |
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| CN201210579538.3A Pending CN103906293A (en) | 2012-12-27 | 2012-12-27 | Control circuit of indicating lamp |
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Application publication date: 20140702 |