CN203399077U - General light-operated switch - Google Patents
General light-operated switch Download PDFInfo
- Publication number
- CN203399077U CN203399077U CN201320420302.5U CN201320420302U CN203399077U CN 203399077 U CN203399077 U CN 203399077U CN 201320420302 U CN201320420302 U CN 201320420302U CN 203399077 U CN203399077 U CN 203399077U
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- resistance
- circuit
- operating amplifier
- direct current
- current relay
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Abstract
The utility model provides a general light-operated switch which comprises a 12V dc source, a photosensitive circuit, a voltage comparison circuit, a dc relay drive circuit, wherein the photosensitive circuit comprises a photoresistor RG and a potentiometer RP, and the voltage comparison circuit comprises a high-resistant operational amplifier IC1 employing a CA3140 chip, a resistor R1, a resistor R2 and a feedback resistor R3. In the general light-operated switch, one photoresistor RG acquires light signals, the high-resistant operational amplifier IC1 (CA3140 chip) serves as a core element, and PNP transistor VT1 drives the contacts of a DC relay to switch on and off. The light-operated switch is applicable to automatic control, safe and antitheft systems, and is simple in circuit structure, less in component used, reliable in circuit performance, easy for use in other places and low in development cost.
Description
Technical field
The utility model belongs to photo-electric control technical field, is about a kind of general light-operated switch.
Background technology
Light-controlled antitheft device energy layman go out, at night with night man in unmanned time marquis, after darkness, light-controlled antitheft device can automatically be turned on electric light, open the electrical equipment such as sound equipment, to the predefined bedtime automatically close again the power supply of electric light and sound equipment, simulation has the be in illusion of activity of people.
Chicken farm is in order to improve the laying rate of laying hen, chicken farm is except qualified feed, strict epidemic prevention are managed, physiology, the growth needs that also will adapt to laying hen, artificially increase light application time in hen house, and object is to improve laying rate in order to increase the eating time of laying hen.So overcast and rainy or when illumination is not enough in night hen house, take artificial supplementation illumination means more, open illuminating lamp to supplement the light application time of hen house.
Also have various Light operated desk lamps, Light Controlling Street Lamp Controller etc., they all use light-operated circuit in circuit.General light-operated switch described in the utility model is a kind of general photocontrol switch, it gathers light signal with a photo resistance RG, use high resistance operating amplifier IC1(CA3140) as core parts, utilize the conducting of PNP transistor VT1 to drive being switched on or switched off of direct current relay contact.General light-operated switch can be applicable to the aspects such as automatic control, antitheft security system.This general light-operated switch has the features such as circuit structure is simple and direct, components and parts use amount is few, circuit performance reliable, be easy to transplant, development cost is low.
Below describe general light-operated switch described in the utility model related relevant technologies content in implementation process in detail.
Utility model content
Goal of the invention and beneficial effect: general light-operated switch described in the utility model is a kind of general photocontrol switch, it gathers light signal with a photo resistance RG, use high resistance operating amplifier IC1(CA3140) as core parts, utilize the conducting of PNP transistor VT1 to drive being switched on or switched off of direct current relay contact.General light-operated switch can be applicable to the aspects such as automatic control, antitheft security system.This general light-operated switch has the features such as circuit structure is simple and direct, components and parts use amount is few, circuit performance reliable, be easy to transplant, development cost is low.
Circuit working principle: when the illumination of light drops to settings, because rising, the resistance of photo resistance in general light controlled switch circuit makes the end of oppisite phase potential rise of high resistance operating amplifier IC1, the output output high level of high resistance operating amplifier IC1 makes PNP transistor VT1 conducting, conducting by PNP transistor VT1 drives direct current relay J to start working, start to control the closure of direct current relay J normally opened contact or the disconnection of normally-closed contact, realize the automatic control to external circuit.Regulator potentiometer RP can set the light illumination needing.
Technical characterictic: general light-operated switch, it comprises 12V DC power supply, photosensitive circuit, voltage comparator circuit, direct current relay drive circuit, it is characterized in that:
Photosensitive circuit: it is comprised of photo resistance RG, potentiometer RP, a termination voltage comparator circuit of photo resistance RG one end and potentiometer RP, the anodal VCC of the other end of potentiometer RP and movable end connection circuit thereof, the other end connection circuit ground GND of photo resistance RG;
Voltage comparator circuit: it is by high resistance operating amplifier IC1, resistance R 1, resistance R 2 and feedback resistance R3 form, it is CA3140 that high resistance operating amplifier IC1 adopts the model of chip, the 3rd pin of one termination high resistance operating amplifier IC1 of one end of resistance R 1 and resistance R 2, the anodal VCC of other end connection circuit of high resistance operating amplifier IC1 the 7th pin and resistance R 1, the other end connection circuit ground GND of high resistance operating amplifier IC1 the 4th pin and resistance R 2, high resistance operating amplifier IC1 the 6th pin connects feedback resistance R3 one end and direct current relay drive circuit, another termination high resistance operating amplifier IC1 the 3rd pin of feedback resistance R3,
Direct current relay drive circuit: it is comprised of PNP transistor VT1, resistance R 4, direct current relay J and silicon rectifier diode D1, high resistance operating amplifier IC1 the 6th pin connects one end of base stage and the resistance R 4 of PNP transistor VT1, the anodal VCC of other end connection circuit of the emitter of PNP transistor VT1 and resistance R 4, the collector electrode of PNP transistor VT1 connects one end of direct current relay J coil and the negative pole of silicon rectifier diode D1, the anodal connection circuit ground GND of the other end of direct current relay J coil and silicon rectifier diode D1; The positive pole of 12V DC power supply is connected with circuit anode VCC, and the negative pole of 12V DC power supply is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 is embodiment circuit working schematic diagram of general light-operated switch that the utility model provides.
Embodiment
According to the general light controlled switch circuit fundamental diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in utility model content, and the components and parts technical parameter described in execution mode requires and circuit production main points are implemented to realize the utility model, below in conjunction with embodiment, correlation technique of the present utility model is further described.
The technical parameter of components and parts and selection requirement
RG is photo resistance, can select the models such as MG45;
IC1 is high resistance operating amplifier, and employing chip is CA3140, and it as input, has high input impedance (1.5T Ω) and extremely low input current (10PA) with MOSFET;
VT1 is PNP transistor, and the model of selecting is 2SC9015, requires β >=150;
The resistance of resistance R 1 and resistance R 2 is 10K Ω, and the resistance of feedback resistance R3 is 1M Ω, and the resistance of resistance R 4 is 20K Ω;
RP is potentiometer, and its resistance is 22K Ω;
D1 is silicon rectifier diode, and the model of selecting is 1N4001;
J is direct current relay, and the direct voltage of coil is 12V, and the contact rated power of direct current relay J requires to be greater than 250V/2A.
Circuit production main points, circuit debugging and using method
Because of the circuit structure of general light-operated switch fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing 1 is welded to specifications, guarantee that polar crystal pipe, diode and DC power supply welding are correct.By visual examination physical connection line and welding quality, after careful inspection is correct, circuit of the present utility model does not substantially need to carry out any debugging and can work;
During welding photo resistance RG, want SC, because a little less than photo resistance RG is highly brittle, damage because of overheated if control improper being easy to weld time;
DC power supply 12V can be used rectifier power source or battery pack, and resistance in the middle of first potentiometer RP being transferred to, covers in photo resistance RG, and trimmer potentiometer RP then, until hear the contact adhesive of the J of direct current relay.Photo resistance RG is when being subject to illumination, and the contact of direct current relay J should discharge.If the adhesive of the contact of direct current relay J or discharge nonconformingly, the careful resistance of trimmer potentiometer RP, until the working law of relay J is normal.
Claims (1)
1. a general light-operated switch, it comprises 12V DC power supply, photosensitive circuit, voltage comparator circuit, direct current relay drive circuit, it is characterized in that:
Described photosensitive circuit is comprised of photo resistance RG, potentiometer RP, a termination voltage comparator circuit of photo resistance RG one end and potentiometer RP, the anodal VCC of the other end of potentiometer RP and movable end connection circuit thereof, the other end connection circuit ground GND of photo resistance RG;
Described voltage comparator circuit is by high resistance operating amplifier IC1, resistance R 1, resistance R 2 and feedback resistance R3 form, it is CA3140 that high resistance operating amplifier IC1 adopts the model of chip, the 3rd pin of one termination high resistance operating amplifier IC1 of one end of resistance R 1 and resistance R 2, the anodal VCC of other end connection circuit of high resistance operating amplifier IC1 the 7th pin and resistance R 1, the other end connection circuit ground GND of high resistance operating amplifier IC1 the 4th pin and resistance R 2, high resistance operating amplifier IC1 the 6th pin connects feedback resistance R3 one end and direct current relay drive circuit, another termination high resistance operating amplifier IC1 the 3rd pin of feedback resistance R3,
Described direct current relay drive circuit is comprised of PNP transistor VT1, resistance R 4, direct current relay J and silicon rectifier diode D1, high resistance operating amplifier IC1 the 6th pin connects one end of base stage and the resistance R 4 of PNP transistor VT1, the anodal VCC of other end connection circuit of the emitter of PNP transistor VT1 and resistance R 4, the collector electrode of PNP transistor VT1 connects one end of direct current relay J coil and the negative pole of silicon rectifier diode D1, the anodal connection circuit ground GND of the other end of direct current relay J coil and silicon rectifier diode D1;
The positive pole of described 12V DC power supply is connected with circuit anode VCC, and the negative pole of 12V DC power supply is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420302.5U CN203399077U (en) | 2013-07-13 | 2013-07-13 | General light-operated switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420302.5U CN203399077U (en) | 2013-07-13 | 2013-07-13 | General light-operated switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203399077U true CN203399077U (en) | 2014-01-15 |
Family
ID=49910573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320420302.5U Expired - Fee Related CN203399077U (en) | 2013-07-13 | 2013-07-13 | General light-operated switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203399077U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401546A (en) * | 2013-07-13 | 2013-11-20 | 何林 | Universal light-operated switch |
| CN104410397A (en) * | 2014-12-24 | 2015-03-11 | 周云侠 | Low illumination controller |
| CN108768369A (en) * | 2018-05-03 | 2018-11-06 | 李王挚 | A kind of light-operated switch |
-
2013
- 2013-07-13 CN CN201320420302.5U patent/CN203399077U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401546A (en) * | 2013-07-13 | 2013-11-20 | 何林 | Universal light-operated switch |
| CN104410397A (en) * | 2014-12-24 | 2015-03-11 | 周云侠 | Low illumination controller |
| CN108768369A (en) * | 2018-05-03 | 2018-11-06 | 李王挚 | A kind of light-operated switch |
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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: 20140115 Termination date: 20140713 |
|
| EXPY | Termination of patent right or utility model |