CN203896537U - Lighting switch having time delay function - Google Patents
Lighting switch having time delay function Download PDFInfo
- Publication number
- CN203896537U CN203896537U CN201420123305.7U CN201420123305U CN203896537U CN 203896537 U CN203896537 U CN 203896537U CN 201420123305 U CN201420123305 U CN 201420123305U CN 203896537 U CN203896537 U CN 203896537U
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- CN
- China
- Prior art keywords
- thyristor
- resistance
- switch
- rectifier bridge
- electricity
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a lighting switch having a time delay function. The lighting switch includes a power source connected with a lamp and a switch in series. One end of the switch is connected with a first end of a rectifier bridge electrically. The other end of the switch is connected with a third end of the rectifier bridge electrically. A fourth end of the rectifier bridge is connected with an anode electrode of a thyristor electrically. A second end of the rectifier bridge is connected with a cathode electrode of the thyristor. The anode electrode of the thyristor is connected with one end of a third resistor and one end of a capacitor electrically. A control electrode of the thyristor is connected with the other end of the third resistor and a cathode electrode of a diode electrically. The other end of the capacitor is connected with a first resistor and an anode electrode of the diode. The capacitor is connected with a second resistor in parallel. According to the utility model, a time delay circuit is connected to a prior switch circuit in parallel. By utilizing charging characteristics of the capacitor, triggering voltage of the control electrode of the thyristor is reduced gradually, so that the thyristor is switched off gradually. Therefore, the time delay function is realized.
Description
Technical field
The utility model relates to electronic technology field, relates in particular to a kind of lighting switch with delay function.
Background technology
The requisite illumination articles for use of Deng Shi modern society, along with the raising of people's living standard, more and more various various light fixtures appear in people's life.Incident is lighting switch miscellaneous, and traditional lighting switch is the light fixture that moment extinguishes, in the situation that some is special, if do not need lamp moment extinguish and this how? such as, if the lighting switch in bedroom is distant apart from bed, when turning off the light rest night, because bedroom moment becomes dark, in the process of returning to bed, easily the indoor barrier of quilt is damaged.
Therefore, can provide a kind of novel lighting switch, lamp can not extinguished moment when turn-offing, but dimmedly gradually finally extinguish, be problem demanding prompt solution in prior art.
Utility model content
Technical problem to be solved in the utility model is, a kind of lighting switch with delay function is provided, it is a delay circuit in parallel in original switching circuit, and utilize the charge characteristic of electric capacity, can reduce gradually the control utmost point trigger voltage of thyristor, thereby thyristor is little by little turn-offed, to realize delay function.
To achieve these goals, the utility model by the following technical solutions.
The lighting switch with delay function comprises a power supply, and described power supply is connected with a lamp and a switch successively; One end of described switch is connected with the first end electricity of a rectifier bridge, and the other end of described switch is connected with the 3rd end electricity of described rectifier bridge; The 4th end of described rectifier bridge is connected with the anode electricity of a thyristor, and the second end of described rectifier bridge is connected with the negative electrode electricity of described thyristor; The anode of described thyristor is connected with one the 3rd one end of resistance and one end electricity of an electric capacity respectively; The control utmost point of described thyristor is connected with the other end of described the 3rd resistance and the negative electrode electricity of a diode respectively; The other end of described electric capacity is connected with the anode electricity of described diode by one first resistance; Described electric capacity is in parallel with one second resistance.
Optionally, described the first resistance, the second resistance and the 3rd resistance all adopt metalfilmresistor.
Optionally, described electric capacity adopts electrochemical capacitor.
The advantage with the lighting switch of delay function described in the utility model is,
(1) this device can make lamp can not extinguish moment behind pass, and under specifically needing, light fixture has the function of time delayed turn-off.
(2) with prior art at two switches of sleeping indoor location (comprise and open switch and stopcock), compare, this device only needs a switch is installed, and meets saving material, and the theory of low-carbon environment-friendly.
(3) simple in structure, cost is lower, manufacture and easy to use, be beneficial to and promote the use of.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram that the utlity model has the lighting switch of delay function.
Embodiment
Below in conjunction with accompanying drawing, to the utility model, provide the embodiment of the lighting switch with delay function to elaborate.
Shown in Figure 1, a kind of lighting switch with delay function comprises a power supply, and described power supply is 220 volts of AC power.Described power supply is connected with a lamp L1 and a switch S A successively.One end of described switch S A is connected with the first end electricity of a rectifier bridge VC, and the other end of described switch S A is connected with the 3rd end electricity of described rectifier bridge VC.The 4th end of described rectifier bridge VC is connected with the anode electricity of a thyristor T, and the second end of described rectifier bridge VC is connected with the negative electrode electricity of described thyristor T.The anode of described thyristor T is connected with one the 3rd one end of resistance R 3 and one end electricity of a capacitor C respectively.The control utmost point of described thyristor T is connected with the negative electrode electricity of a diode VD with the other end of described the 3rd resistance R 3 respectively.The other end of described capacitor C is connected with the anode electricity of described diode VD by one first resistance R 1.Described capacitor C is in parallel with one second resistance R 2.
Wherein said rectifier bridge VC is four diode formations of series connection successively.Node between every two diodes is respectively first end, the second end, the 3rd end and the 4th end of described rectifier bridge.In the present embodiment, described rectifier bridge VC adopts full-bridge type.
In the present embodiment, the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3 all adopt metalfilmresistor.Wherein metalfilmresistor has stable, the feature such as error is little, precision is high and volume is little.Described capacitor C is electrochemical capacitor, and wherein said electrochemical capacitor inside has the electrolysis prepared material that stores electric charge, and to distinguish both positive and negative polarity, and capacity is larger.
The operation principle of this device will be illustrated below.
This device comprises main circuit and control circuit, and wherein said main circuit comprises rectifier bridge VC, thyristor T, switch S A and lamp L1.Described control circuit comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, capacitor C and thyristor T.
When described switch S A is closed, lamp L1 is lit, and delay circuit is not worked.When described switch S A disconnects, after alternating current flowing through lamps L1, the rectifier bridge VC of 220 volts of power supplys, pulsating voltage is added between the anode and negative electrode of thyristor T, this pulsating voltage extremely charges to described capacitor C by the control of the first resistance R 1, diode VD and thyristor T simultaneously.Due to, the voltage at described capacitor C two ends is 0 volt at the beginning, the electric current of therefore inputting described thyristor T is larger, so the full conducting of described thyristor T, lamp L1 is still very bright.Charging along with described capacitor C, the electric current of the control utmost point of described thyristor T reduces gradually, the incomplete conducting of described thyristor T, that is, the anode of thyristor T and the voltage drop between negative electrode increase gradually, so the voltage at lamp L1 two ends reduces gradually, and then lamp L1 is dimmed gradually, through after a while, described thyristor T turn-offs, described lamp L1 extinguishes, thereby realize this device, at lamp L1, closes to have no progeny and can not extinguish moment, but the dimmed delay effect to finally extinguishing gradually.Like this, people can utilize lamp L1 to have no progeny in pass can not extinguish moment and be in dimmed gradually process, by remaining light illumination, are back to smoothly that bed is upper has a rest.
Moreover the delay time that this device is realized can be by regulating the resistance of the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3 to realize.If the resistance of the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3 increases, delay time can increase, but resistance is too large, can make thyristor T turn-off.If the resistance of the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3 reduces, time expand, can shorten, but the resistance of the first resistance R 1 can not be too little, otherwise can make thyristor T, because controlling, electric current is excessive to be damaged.Therefore, delay time can be determined as required.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1. a lighting switch with delay function, is characterized in that, comprises a power supply, and described power supply is connected with a lamp and a switch successively; One end of described switch is connected with the first end electricity of a rectifier bridge, and the other end of described switch is connected with the 3rd end electricity of described rectifier bridge; The 4th end of described rectifier bridge is connected with the anode electricity of a thyristor, and the second end of described rectifier bridge is connected with the negative electrode electricity of described thyristor; The anode of described thyristor is connected with one the 3rd one end of resistance and one end electricity of an electric capacity respectively; The control utmost point of described thyristor is connected with the other end of described the 3rd resistance and the negative electrode electricity of a diode respectively; The other end of described electric capacity is connected with the anode electricity of described diode by one first resistance; Described electric capacity is in parallel with one second resistance.
2. the lighting switch with delay function according to claim 1, is characterized in that, described the first resistance, the second resistance and the 3rd resistance all adopt metalfilmresistor.
3. the lighting switch with delay function according to claim 1, is characterized in that, described electric capacity adopts electrochemical capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123305.7U CN203896537U (en) | 2014-03-19 | 2014-03-19 | Lighting switch having time delay function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123305.7U CN203896537U (en) | 2014-03-19 | 2014-03-19 | Lighting switch having time delay function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203896537U true CN203896537U (en) | 2014-10-22 |
Family
ID=51722885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420123305.7U Expired - Fee Related CN203896537U (en) | 2014-03-19 | 2014-03-19 | Lighting switch having time delay function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203896537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918365A (en) * | 2015-05-26 | 2015-09-16 | 谈宁 | Lighting switch with time-delay function |
-
2014
- 2014-03-19 CN CN201420123305.7U patent/CN203896537U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918365A (en) * | 2015-05-26 | 2015-09-16 | 谈宁 | Lighting switch with time-delay function |
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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: 20141022 Termination date: 20170319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |