CN104113956A - Lighting switch control circuit and lamp - Google Patents
Lighting switch control circuit and lamp Download PDFInfo
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- CN104113956A CN104113956A CN201310140543.9A CN201310140543A CN104113956A CN 104113956 A CN104113956 A CN 104113956A CN 201310140543 A CN201310140543 A CN 201310140543A CN 104113956 A CN104113956 A CN 104113956A
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Abstract
The invention belongs to the field of control circuits, and particularly relates to a lighting switch control circuit and a lamp. The lighting switch control circuit of the invention adopts common discrete components. The lighting switch control circuit is composed of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a current limiting resistor R6, a resistor R7, a capacitor C1, a capacitor C2, a voltage stabilizing tube ZD1, a first switching tube, a second switching tube, a key S1 and a light emitting diode LED. By adopting the lighting switch control circuit, high current can be controlled by low current, the use of a mechanical switch to control a power supply is avoided, and such phenomena as sparking, oxidation and poor contact are not generated. The lighting switch control circuit has much higher reliability compared with a mechanical switch, and is especially applicable to small electronic products.
Description
Technical field
The invention belongs to control circuit field, relate in particular to a kind of lighting switch control circuit and light fixture.
Background technology
At present a lot of use for electronic products mechanical switchs carry out direct switch control to power supply, because mechanical switch can produce very large immediate current when connecting, the contact of switch shrapnel easily produces sparking, and sparking also just easily makes contact oxidation cause switch loose contact, may cause switching function to lose efficacy.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of lighting switch control circuit, is intended to solve present use for electronic products mechanical switch power supply is carried out to direct switch control, the problem that can cause switching function to lose efficacy.
The embodiment of the present invention is achieved in that a kind of lighting switch control circuit, and described lighting switch control circuit comprises:
Resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube, second switch pipe, button S1 and LED;
The high potential termination power supply of described the first switching tube, the cold end of described the first switching tube connects the anode of LED by current-limiting resistance R6, the minus earth of described LED, described resistance R 1 is connected between the hot end and control end of the first switching tube, the control end of first termination the first switching tube of described resistance R 2, the hot end of the second termination second switch pipe of described resistance R 2, the cold end ground connection of described second switch pipe, the anode of the control termination voltage-stabiliser tube ZD1 of described second switch pipe, the negative electrode of described voltage-stabiliser tube ZD1 connects the cold end of the first switching tube by resistance R 5, described resistance R 7 and capacitor C 2 are connected in parallel between the control end and cold end of described second switch pipe, described resistance R 3, button S1 and resistance R 4 are connected in series between the second end of described resistance R 2 and the negative electrode of voltage-stabiliser tube ZD1 successively, described capacitor C 1 is connected between described resistance R 3 and the public connecting end and ground of button S1.
Another object of the embodiment of the present invention is to provide a kind of light fixture, comprises lighting switch control circuit, and described lighting switch control circuit comprises:
Resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube, second switch pipe, button S1 and LED;
The high potential termination power supply of described the first switching tube, the cold end of described the first switching tube connects the anode of LED by current-limiting resistance R6, the minus earth of described LED, described resistance R 1 is connected between the hot end and control end of the first switching tube, the control end of first termination the first switching tube of described resistance R 2, the hot end of the second termination second switch pipe of described resistance R 2, the cold end ground connection of described second switch pipe, the anode of the control termination voltage-stabiliser tube ZD1 of described second switch pipe, the negative electrode of described voltage-stabiliser tube ZD1 connects the cold end of the first switching tube by resistance R 5, described resistance R 7 and capacitor C 2 are connected in parallel between the control end and cold end of described second switch pipe, described resistance R 3, button S1 and resistance R 4 are connected in series between the second end of described resistance R 2 and the negative electrode of voltage-stabiliser tube ZD1 successively, described capacitor C 1 is connected between described resistance R 3 and the public connecting end and ground of button S1.
In embodiments of the present invention, lighting switch control circuit adopts common discrete component to form, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube, second switch pipe, button S1 and LED form lighting switch control circuit, use this lighting switch control circuit, realize the large electric current of Small current control, avoid adopting mechanical switch to control power supply, just can not produce sparking, oxidation, the phenomenons such as loose contact, its reliability is far better than mechanical switch, spy is applicable to small-sized electronic product.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the lighting switch control circuit that provides of first embodiment of the invention;
Fig. 2 is the circuit structure diagram of the lighting switch control circuit that provides of second embodiment of the invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows the circuit structure of the lighting switch control circuit that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant to the embodiment of the present invention, and details are as follows.
A lighting switch control circuit, described lighting switch control circuit comprises:
Resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube 100, second switch pipe 200, button S1 and LED;
The high potential termination power supply of described the first switching tube 100, the cold end of described the first switching tube 100 connects the anode of LED by current-limiting resistance R6, the minus earth of described LED, described resistance R 1 is connected between the hot end and control end of the first switching tube 100, the control end of first termination the first switching tube 100 of described resistance R 2, the hot end of the second termination second switch pipe 200 of described resistance R 2, the cold end ground connection of described second switch pipe 200, the anode of the control termination voltage-stabiliser tube ZD1 of described second switch pipe 200, the negative electrode of described voltage-stabiliser tube ZD1 connects the cold end of the first switching tube 100 by resistance R 5, described resistance R 7 and capacitor C 2 are connected in parallel between the control end and cold end of described second switch pipe 200, described resistance R 3, button S1 and resistance R 4 are connected in series between the second end of described resistance R 2 and the negative electrode of voltage-stabiliser tube ZD1 successively, described capacitor C 1 is connected between described resistance R 3 and the public connecting end and ground of button S1.
As one embodiment of the invention, described the first switching tube 100 adopts P type metal-oxide-semiconductor Q1, the grid of described P type metal-oxide-semiconductor Q1 is the control end of the first switching tube 100, the source electrode of described P type metal-oxide-semiconductor Q1 is the hot end of the first switching tube 100, and the drain electrode of described P type metal-oxide-semiconductor Q1 is the cold end of the first switching tube 100.
As one embodiment of the invention, described second switch pipe 200 adopts NPN type triode Q2, the base stage of described NPN type triode Q2 is the control end of second switch pipe 200, the current collection of described NPN type triode Q2 is the hot end of second switch pipe 200 very, and the transmitting of described NPN type triode Q2 is the cold end of second switch pipe 200 very.
Fig. 2 shows the circuit structure of the lighting switch control circuit that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant to the embodiment of the present invention, and details are as follows.
As one embodiment of the invention, described the first switching tube 100 adopts positive-negative-positive triode Q3, the base stage of described positive-negative-positive triode Q3 is the control end of the first switching tube 100, the transmitting of described positive-negative-positive triode Q3 is the hot end of the first switching tube 100 very, and the current collection of described positive-negative-positive triode Q3 is the cold end of the first switching tube 100 very.
As one embodiment of the invention, described second switch pipe 200 adopts N-type metal-oxide-semiconductor Q4, the grid of described N-type metal-oxide-semiconductor Q4 is the control end of second switch pipe 200, the drain electrode of described N-type metal-oxide-semiconductor Q4 is the hot end of second switch pipe 200, and the source electrode of described N-type metal-oxide-semiconductor Q4 is the cold end of second switch pipe 200.
Another embodiment of the present invention also provides a kind of light fixture, comprises lighting switch control circuit, and described lighting switch control circuit comprises:
Resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube 100, second switch pipe 200, button S1 and LED;
The high potential termination power supply of described the first switching tube 100, the cold end of described the first switching tube 100 connects the anode of LED by current-limiting resistance R6, the minus earth of described LED, described resistance R 1 is connected between the hot end and control end of the first switching tube 100, the control end of first termination the first switching tube 100 of described resistance R 2, the hot end of the second termination second switch pipe 200 of described resistance R 2, the cold end ground connection of described second switch pipe 200, the anode of the control termination voltage-stabiliser tube ZD1 of described second switch pipe 200, the negative electrode of described voltage-stabiliser tube ZD1 connects the cold end of the first switching tube 100 by resistance R 5, described resistance R 7 and capacitor C 2 are connected in parallel between the control end and cold end of described second switch pipe 200, described resistance R 3, button S1 and resistance R 4 are connected in series between the second end of described resistance R 2 and the negative electrode of voltage-stabiliser tube ZD1 successively, described capacitor C 1 is connected between described resistance R 3 and the public connecting end and ground of button S1.
As one embodiment of the invention, described the first switching tube 100 adopts P type metal-oxide-semiconductor Q1, the grid of described P type metal-oxide-semiconductor Q1 is the control end of the first switching tube 100, the source electrode of described P type metal-oxide-semiconductor Q1 is the hot end of the first switching tube 100, and the drain electrode of described P type metal-oxide-semiconductor Q1 is the cold end of the first switching tube 100.
As one embodiment of the invention, described second switch pipe 200 adopts NPN type triode Q2, the base stage of described NPN type triode Q2 is the control end of second switch pipe 200, the current collection of described NPN type triode Q2 is the hot end of second switch pipe 200 very, and the transmitting of described NPN type triode Q2 is the cold end of second switch pipe 200 very.
As one embodiment of the invention, described the first switching tube 100 adopts positive-negative-positive triode Q3, the base stage of described positive-negative-positive triode Q3 is the control end of the first switching tube 100, the transmitting of described positive-negative-positive triode Q3 is the hot end of the first switching tube 100 very, and the current collection of described positive-negative-positive triode Q3 is the cold end of the first switching tube 100 very.
As one embodiment of the invention, described second switch pipe 200 adopts N-type metal-oxide-semiconductor Q4, the grid of described N-type metal-oxide-semiconductor Q4 is the control end of second switch pipe 200, the drain electrode of described N-type metal-oxide-semiconductor Q4 is the hot end of second switch pipe 200, and the source electrode of described N-type metal-oxide-semiconductor Q4 is the cold end of second switch pipe 200.
First switching tube 100 of take below adopts P type metal-oxide-semiconductor Q1 and second switch pipe 200 to adopt NPN type triode Q2 as the operation principle of example explanation lighting switch control circuit:
Resistance R 1, resistance R 2 and P type metal-oxide-semiconductor Q1 realize switching function, NPN type triode Q2, resistance R 4, resistance R 5, voltage-stabiliser tube ZD1, capacitor C 1, capacitor C 2 and button S1 realize level holding circuit together, and current-limiting resistance R6 and LED are as the load of circuit.For switching function is reliably changed, C1>C2, R3>>R5, voltage-stabiliser tube ZD1, for improving the conducting voltage of NPN type triode Q2, increases the reliability of switch.Capacitor C 2 and resistance R 7 are for improving reliability.
Principle analysis:
Static analysis after powering on: after powering on during by button S1, VIN voltage gives capacitor C 1 charging through resistance R 1, resistance R 2, resistance R 3, the left end of button S1 is high level, the capacitor C 2 of NPN type triode Q2 base stage is low level after being discharged by resistance R 7, NPN type triode Q2 cut-off, P type metal-oxide-semiconductor Q1 also ends, and Vout does not have Voltage-output, and LED extinguishes.
When pushing button S1, the voltage of capacitor C 1 is full of electricity to 0.7V left and right by resistance R 4 and voltage-stabiliser tube ZD1 to capacitor C 2, makes NPN type triode Q2 and P type metal-oxide-semiconductor Q1 conducting, Vout output voltage, and LED is lit; Meanwhile, the voltage of Vout continues to maintain the conducting state of NPN type triode Q2 and P type metal-oxide-semiconductor Q1 after resistance R 5 and voltage-stabiliser tube ZD1.The button S1 that now comes loose, LED, by the state maintaininging lights, is realized the function of start.Meanwhile, due to the conducting of P type metal-oxide-semiconductor Q1, capacitor C 1 is discharged over the ground through resistance R 3 and P type metal-oxide-semiconductor Q1, makes button S1 left end become low-voltage by high voltage, for next LED, closes and prepares.
Due to the left end voltage step-down of button S1, when again pushing button S1, the high voltage that B is ordered is pulled low to the equally low voltage of left end of button S1, and voltage-stabiliser tube ZD1 can not be punctured, NPN type triode Q2 is that low-voltage is ended, and P type metal-oxide-semiconductor Q1 is just cut-off also, and LED extinguishes.Realized like this function of shutdown.
In embodiments of the present invention, lighting switch control circuit adopts common discrete component to form, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube, second switch pipe, button S1 and LED form lighting switch control circuit, use this lighting switch control circuit, realize the large electric current of Small current control, avoid adopting mechanical switch to control power supply, just can not produce sparking, oxidation, the phenomenons such as loose contact, its reliability is far better than mechanical switch, spy is applicable to small-sized electronic product.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a lighting switch control circuit, is characterized in that, described lighting switch control circuit comprises:
Resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube, second switch pipe, button S1 and LED;
The high potential termination power supply of described the first switching tube, the cold end of described the first switching tube connects the anode of LED by current-limiting resistance R6, the minus earth of described LED, described resistance R 1 is connected between the hot end and control end of the first switching tube, the control end of first termination the first switching tube of described resistance R 2, the hot end of the second termination second switch pipe of described resistance R 2, the cold end ground connection of described second switch pipe, the anode of the control termination voltage-stabiliser tube ZD1 of described second switch pipe, the negative electrode of described voltage-stabiliser tube ZD1 connects the cold end of the first switching tube by resistance R 5, described resistance R 7 and capacitor C 2 are connected in parallel between the control end and cold end of described second switch pipe, described resistance R 3, button S1 and resistance R 4 are connected in series between the second end of described resistance R 2 and the negative electrode of voltage-stabiliser tube ZD1 successively, described capacitor C 1 is connected between described resistance R 3 and the public connecting end and ground of button S1.
2. lighting switch control circuit as claimed in claim 1, it is characterized in that, described the first switching tube adopts P type metal-oxide-semiconductor Q1, the grid of described P type metal-oxide-semiconductor Q1 is the control end of the first switching tube, the source electrode of described P type metal-oxide-semiconductor Q1 is the hot end of the first switching tube, and the drain electrode of described P type metal-oxide-semiconductor Q1 is the cold end of the first switching tube.
3. lighting switch control circuit as claimed in claim 1, it is characterized in that, described second switch pipe adopts NPN type triode Q2, the base stage of described NPN type triode Q2 is the control end of second switch pipe, the current collection of described NPN type triode Q2 is the hot end of second switch pipe very, and the transmitting of described NPN type triode Q2 is the cold end of second switch pipe very.
4. lighting switch control circuit as claimed in claim 1, it is characterized in that, described the first switching tube adopts positive-negative-positive triode Q3, the base stage of described positive-negative-positive triode Q3 is the control end of the first switching tube, the transmitting of described positive-negative-positive triode Q3 is the hot end of the first switching tube very, and the current collection of described positive-negative-positive triode Q3 is the cold end of the first switching tube very.
5. lighting switch control circuit as claimed in claim 1, it is characterized in that, described second switch pipe adopts N-type metal-oxide-semiconductor Q4, the grid of described N-type metal-oxide-semiconductor Q4 is the control end of second switch pipe, the drain electrode of described N-type metal-oxide-semiconductor Q4 is the hot end of second switch pipe, and the source electrode of described N-type metal-oxide-semiconductor Q4 is the cold end of second switch pipe.
6. a light fixture, comprises lighting switch control circuit, it is characterized in that, described lighting switch control circuit comprises:
Resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, current-limiting resistance R6, resistance R 7, capacitor C 1, capacitor C 2, voltage-stabiliser tube ZD1, the first switching tube, second switch pipe, button S1 and LED;
The high potential termination power supply of described the first switching tube, the cold end of described the first switching tube connects the anode of LED by current-limiting resistance R6, the minus earth of described LED, described resistance R 1 is connected between the hot end and control end of the first switching tube, the control end of first termination the first switching tube of described resistance R 2, the hot end of the second termination second switch pipe of described resistance R 2, the cold end ground connection of described second switch pipe, the anode of the control termination voltage-stabiliser tube ZD1 of described second switch pipe, the negative electrode of described voltage-stabiliser tube ZD1 connects the cold end of the first switching tube by resistance R 5, described resistance R 7 and capacitor C 2 are connected in parallel between the control end and cold end of described second switch pipe, described resistance R 3, button S1 and resistance R 4 are connected in series between the second end of described resistance R 2 and the negative electrode of voltage-stabiliser tube ZD1 successively, described capacitor C 1 is connected between described resistance R 3 and the public connecting end and ground of button S1.
7. light fixture as claimed in claim 6, it is characterized in that, described the first switching tube adopts P type metal-oxide-semiconductor Q1, the grid of described P type metal-oxide-semiconductor Q1 is the control end of the first switching tube, the source electrode of described P type metal-oxide-semiconductor Q1 is the hot end of the first switching tube, and the drain electrode of described P type metal-oxide-semiconductor Q1 is the cold end of the first switching tube.
8. light fixture as claimed in claim 6, it is characterized in that, described second switch pipe adopts NPN type triode Q2, the base stage of described NPN type triode Q2 is the control end of second switch pipe, the current collection of described NPN type triode Q2 is the hot end of second switch pipe very, and the transmitting of described NPN type triode Q2 is the cold end of second switch pipe very.
9. light fixture as claimed in claim 6, it is characterized in that, described the first switching tube adopts positive-negative-positive triode Q3, the base stage of described positive-negative-positive triode Q3 is the control end of the first switching tube, the transmitting of described positive-negative-positive triode Q3 is the hot end of the first switching tube very, and the current collection of described positive-negative-positive triode Q3 is the cold end of the first switching tube very.
10. light fixture as claimed in claim 6, it is characterized in that, described second switch pipe adopts N-type metal-oxide-semiconductor Q4, the grid of described N-type metal-oxide-semiconductor Q4 is the control end of second switch pipe, the drain electrode of described N-type metal-oxide-semiconductor Q4 is the hot end of second switch pipe, and the source electrode of described N-type metal-oxide-semiconductor Q4 is the cold end of second switch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310140543.9A CN104113956B (en) | 2013-04-22 | 2013-04-22 | A kind of light switch control circuit and light fixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310140543.9A CN104113956B (en) | 2013-04-22 | 2013-04-22 | A kind of light switch control circuit and light fixture |
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| CN104113956A true CN104113956A (en) | 2014-10-22 |
| CN104113956B CN104113956B (en) | 2016-08-17 |
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| CN201310140543.9A Active CN104113956B (en) | 2013-04-22 | 2013-04-22 | A kind of light switch control circuit and light fixture |
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| CN104656480A (en) * | 2015-01-05 | 2015-05-27 | 广东金莱特电器股份有限公司 | Circuit controlled by light touch switch |
| CN111174390A (en) * | 2020-02-17 | 2020-05-19 | 珠海格力电器股份有限公司 | Power taking circuit, wire controller, air conditioner and resistance control method |
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|---|---|
| CN104113956B (en) | 2016-08-17 |
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