CN202261952U - Safety caution light-switching circuit - Google Patents
Safety caution light-switching circuit Download PDFInfo
- Publication number
- CN202261952U CN202261952U CN2011203421822U CN201120342182U CN202261952U CN 202261952 U CN202261952 U CN 202261952U CN 2011203421822 U CN2011203421822 U CN 2011203421822U CN 201120342182 U CN201120342182 U CN 201120342182U CN 202261952 U CN202261952 U CN 202261952U
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- light
- circuit
- switching circuit
- caution
- caution light
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Abstract
A safety caution light-switching circuit comprises a controlled caution light circuit and a light-operated caution light-switching circuit, wherein the controlled caution light circuit comprises a caution light (H) and a 220V alternating-current power supply, and the light-operated caution light-switching circuit comprises a bidirectional thyristor (VS), a diac (VD2), a crystal diode (VD1), a light-dependent resistor (RL), a capacitor (C) and resistors (R1, R2). A caution light with the circuit can flash to caution people.
Description
Technical field
The utility model relates to a kind of dangerous switching circuit that is prone to send out place's warning lamp that is installed in, and belongs to the compact electric apparatus technical field.
Background technology
At present, the phenomenon that much human driving at night or high-altitude flight thing bump because do not see warning mark, the safety of life and property that is threatening people like this, the sort circuit design can be given the good warning function of people.
The utility model content
The purpose of the utility model provides a kind of light-operated flicker security warning light switch circuit design.
The technical scheme of the utility model is:
This circuit is made up of controlled warning light circuit and light-operated warning lamp switching circuit.Wherein controlled warning light circuit is made up of warning lamp H and 220V alternating current; Light-operated warning lamp switching circuit is made up of bidirectional thyristor VS, bidirectional trigger diode VD2, crystal diode VD1, photo-resistor RL, capacitor C and resistor R 1, R2.After the circuit energized, 220V exchanges after the transistor halfwave rectifier, through 1 pair of capacitor C charging of resistor R.Because of charging current is very little, so warning lamp H can be not bright.The C two ends charging voltages height partial pressure value with R1 and photo-resistor RL of then being limited by.Receive daytime natural light irradiation to be low resistance, the ultra only breakover voltage of bidirectional trigger diode VD2 of C voltage, bidirectional thyristor VS ends because of triggerless voltage, and H does not work.Night, the deepening of naturally light, RL is high value, and C two ends charging voltage constantly raises, when the breakover voltage that surpasses VD2, the VD2 conducting, C is through VD2 and R2 discharge, and VS obtains enough trigger currents and conducting, the H electrified light emitting; When C discharged into to a certain degree, VD2 ended again, and VS loses trigger current and when the alternating current zero passage, turn-offs, and H extinguishes.Subsequently, C charges repeatedly, discharges by said process, and VS is constantly ended and conducting, and control H sends the flicker light.
The beneficial effect of the utility model: can play effect through the flicker of light to people's caution.
Description of drawings
Fig. 1 is light-operated flicker security warning light switch circuit figure.Wherein H is a warning lamp, and VS is a MAC97A6 type bidirectional thyristor, and VD2 is a 2CTS1A type bidirectional trigger diode, and VD1 is a 1N4004 type crystal diode, and RL is the photo resistance of MG45-12 type, and C is a capacitor, and R1, R2 are resistors.On daytime, RL is low resistance, the ultra only breakover voltage of bidirectional trigger diode VD2 of C voltage, and bidirectional thyristor VS ends because of triggerless voltage, and warning lamp H does not work.At night, RL is high value, and C two ends charging voltage constantly raises, when the breakover voltage that surpasses VD2, and the VD2 conducting, C is through VD2 and R2 discharge, and VS obtains enough trigger currents and conducting, the H electrified light emitting; When C discharged into to a certain degree, VD2 ended again, and VS loses trigger current and when the alternating current zero passage, turn-offs, and H extinguishes.C charges repeatedly, discharges, and VS is constantly ended and conducting, and control H sends the flicker light.In the circuit, the flash period of warning lamp H is mainly confirmed by the numerical values recited of resistor R 1, capacitor C, bidirectional trigger diode VD2 and resistor R 2.
Embodiment
The utility model is made up of controlled warning light circuit and light-operated warning lamp switching circuit.Wherein controlled warning light circuit is made up of warning lamp H and 220V alternating current; Light-operated warning lamp switching circuit is made up of bidirectional thyristor VS, bidirectional trigger diode VD2, crystal diode VD1, photo-resistor RL, capacitor C and resistor R 1, R2.After the circuit energized, 220V exchanges after the transistor halfwave rectifier, through 1 pair of capacitor C charging of resistor R.Because of charging current is very little, so warning lamp H can be not bright.The C two ends charging voltages height partial pressure value with R1 and photo-resistor RL of then being limited by.Receive daytime natural light irradiation to be low resistance, the ultra only breakover voltage of bidirectional trigger diode VD2 of C voltage, bidirectional thyristor VS ends because of triggerless voltage, and H does not work.Night, the deepening of naturally light, RL is high value, and C two ends charging voltage constantly raises, when the breakover voltage that surpasses VD2, the VD2 conducting, C is through VD2 and R2 discharge, and VS obtains enough trigger currents and conducting, the H electrified light emitting; When C discharged into to a certain degree, VD2 ended again, and VS loses trigger current and when the alternating current zero passage, turn-offs, and H extinguishes.Subsequently, C charges repeatedly, discharges by said process, and VS is constantly ended and conducting, and control H sends the flicker light.
Claims (1)
1. security warning light switch circuit
,It is characterized in that: said circuit is made up of controlled warning light circuit and light-operated warning lamp switching circuit; Wherein controlled warning light circuit is made up of warning lamp H and 220V alternating current, and light-operated warning lamp switching circuit is made up of bidirectional thyristor VS, bidirectional trigger diode VD2, crystal diode VD1, photo-resistor RL, capacitor C and resistor R 1, R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203421822U CN202261952U (en) | 2011-09-14 | 2011-09-14 | Safety caution light-switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203421822U CN202261952U (en) | 2011-09-14 | 2011-09-14 | Safety caution light-switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261952U true CN202261952U (en) | 2012-05-30 |
Family
ID=46123125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203421822U Expired - Fee Related CN202261952U (en) | 2011-09-14 | 2011-09-14 | Safety caution light-switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982908A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Boiler flame detection device |
-
2011
- 2011-09-14 CN CN2011203421822U patent/CN202261952U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982908A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Boiler flame detection device |
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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: 20120530 Termination date: 20120914 |