CN204142826U - A kind of alarm for electricity failure circuit - Google Patents
A kind of alarm for electricity failure circuit Download PDFInfo
- Publication number
- CN204142826U CN204142826U CN201420592649.2U CN201420592649U CN204142826U CN 204142826 U CN204142826 U CN 204142826U CN 201420592649 U CN201420592649 U CN 201420592649U CN 204142826 U CN204142826 U CN 204142826U
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- Prior art keywords
- circuit
- sheffer stroke
- stroke gate
- electric capacity
- resistance
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- 230000005611 electricity Effects 0.000 title claims abstract description 14
- 230000003534 oscillatory effect Effects 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 230000010355 oscillation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a kind of alarm for electricity failure circuit, comprise oscillatory circuit, regulator rectifier circuit, photoelectric coupling circuit and warning circuit, oscillatory circuit comprises Sheffer stroke gate F1, resistance R4 and Sheffer stroke gate F2, regulator rectifier circuit comprises rectifier bridge Q, resistance R1 and diode D1, photoelectric coupling circuit comprises photoelectrical coupler U1, resistance R2 and diode D2, and warning circuit comprises electric capacity C4 and piezoelectric ceramic piece B.The utility model place of being intended to for not needing to drop into very great achievement intrinsic safety equipment automatic power-supply switch provides that a kind of circuit structure is simple, the alarm for electricity failure circuit of practical function, once power-off fault occurs in these places, alarm circuit will send jingle bell and remind people to make rational reply.
Description
Technical field
The utility model relates to a kind of alarm circuit, specifically a kind of alarm for electricity failure circuit.
Background technology
Along with the development of science and technology, electric power more and more becomes one of indispensable element in people's daily life, under a lot of occasion, once have a power failure, can bring very large economic loss, certainly, all can there be automatic switchover standby power supply device in a lot of large scale industry place now, but in some places, for example school, there is no need the very large input of flower and goes to install automatic switchover standby power supply device, once have a power failure, teaching the tinkle of bells can not sound on time, largely can affect the order of school.At this time, a kind of circuit structure is simple, the alarm for electricity failure circuit of practical function is exactly necessary, once power-off fault occurs in these places, alarm circuit will send jingle bell and remind people to make rational reply.
Utility model content
The purpose of this utility model is to provide that a kind of circuit structure is simple, practical function alarm for electricity failure circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of alarm for electricity failure circuit, comprise oscillatory circuit, regulator rectifier circuit, photoelectric coupling circuit and warning circuit, described oscillatory circuit comprises Sheffer stroke gate F1, resistance R4 and Sheffer stroke gate F2, described regulator rectifier circuit comprises rectifier bridge Q, resistance R1 and diode D1, described photoelectric coupling circuit comprises photoelectrical coupler U1, resistance R2 and diode D2, and described warning circuit comprises electric capacity C4 and piezoelectric ceramic piece B.
Described rectifier bridge Q port one connects electric capacity C1, the electric capacity C1 other end connects 220V alternating current, the 220V alternating current other end connects rectifier bridge Q port 3, rectifier bridge Q port 2 is contact resistance R1 respectively, diode D1 negative pole, electric capacity C2, resistance R2 and diode D2 positive pole, diode D2 negative pole connects direct earth capacitance C5 and resistance R3 respectively, the resistance R3 other end connects photoelectrical coupler U1 port one respectively and Sheffer stroke gate F1 inputs 1 end, Sheffer stroke gate F1 inputs 2 ends contact resistance R4 and electric capacity C3 respectively, the resistance R4 other end connects Sheffer stroke gate F1 output terminal respectively, Sheffer stroke gate F2 inputs 1 end and Sheffer stroke gate F2 inputs 2 ends, Sheffer stroke gate F2 output terminal connects the electric capacity C3 other end respectively and Sheffer stroke gate F3 inputs 1 end, Sheffer stroke gate F3 inputs 2 ends contact resistance R5 and electric capacity C4 respectively, the resistance R5 other end connects Sheffer stroke gate F4 output terminal respectively, Sheffer stroke gate F4 inputs 1 end and Sheffer stroke gate F4 inputs 2 ends, Sheffer stroke gate F4 output terminal connects the electric capacity C4 other end and piezoelectric ceramic piece B respectively, the piezoelectric ceramic piece B other end connects photoelectrical coupler U1 port 2, photoelectrical coupler U1 port 4, the electric capacity C2 other end, diode D1 positive pole, LED negative pole and rectifier bridge port 4 also ground connection, the LED positive pole contact resistance R1 other end, the photoelectrical coupler U1 port 3 contact resistance R2 other end.
As further program of the utility model: described photoelectrical coupler U1 model is 4N25, and rectifier bridge Q model is 1N4001.
As the utility model further scheme: described electric capacity C5 serves as the power supply of whole alarm circuit, when the power-off of 220V alternating current, the electric charge stored by electric capacity C5 is that oscillatory circuit is powered.
Compared with prior art, the beneficial effects of the utility model are: the utility model place of being intended to for not needing to drop into very great achievement intrinsic safety equipment automatic power-supply switch provides that a kind of circuit structure is simple, the alarm for electricity failure circuit of practical function, once power-off fault occurs in these places, alarm circuit will send jingle bell and remind people to make rational reply.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of alarm for electricity failure circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of alarm for electricity failure circuit, comprise oscillatory circuit, regulator rectifier circuit, photoelectric coupling circuit and warning circuit, oscillatory circuit comprises Sheffer stroke gate F1, resistance R4 and Sheffer stroke gate F2, regulator rectifier circuit comprises rectifier bridge Q, resistance R1 and diode D1, and photoelectric coupling circuit comprises photoelectrical coupler U1, resistance R2 and diode D2, and warning circuit comprises electric capacity C4 and piezoelectric ceramic piece B.
Rectifier bridge Q port one connects electric capacity C1, the electric capacity C1 other end connects 220V alternating current, the 220V alternating current other end connects rectifier bridge Q port 3, rectifier bridge Q port 2 is contact resistance R1 respectively, diode D1 negative pole, electric capacity C2, resistance R2 and diode D2 positive pole, diode D2 negative pole connects direct earth capacitance C5 and resistance R3 respectively, the resistance R3 other end connects photoelectrical coupler U1 port one respectively and Sheffer stroke gate F1 inputs 1 end, Sheffer stroke gate F1 inputs 2 ends contact resistance R4 and electric capacity C3 respectively, the resistance R4 other end connects Sheffer stroke gate F1 output terminal respectively, Sheffer stroke gate F2 inputs 1 end and Sheffer stroke gate F2 inputs 2 ends, Sheffer stroke gate F2 output terminal connects the electric capacity C3 other end respectively and Sheffer stroke gate F3 inputs 1 end, Sheffer stroke gate F3 inputs 2 ends contact resistance R5 and electric capacity C4 respectively, the resistance R5 other end connects Sheffer stroke gate F4 output terminal respectively, Sheffer stroke gate F4 inputs 1 end and Sheffer stroke gate F4 inputs 2 ends, Sheffer stroke gate F4 output terminal connects the electric capacity C4 other end and piezoelectric ceramic piece B respectively, the piezoelectric ceramic piece B other end connects photoelectrical coupler U1 port 2, photoelectrical coupler U1 port 4, the electric capacity C2 other end, diode D1 positive pole, LED negative pole and rectifier bridge port 4 also ground connection, the LED positive pole contact resistance R1 other end, the photoelectrical coupler U1 port 3 contact resistance R2 other end.
Photoelectrical coupler U1 model is 4N25, and rectifier bridge Q model is 1N4001.
Electric capacity C5 serves as the power supply of whole alarm circuit, and when the power-off of 220V alternating current, the electric charge stored by electric capacity C5 is that oscillatory circuit is powered.
Principle of work of the present utility model is: in figure, and Sheffer stroke gate F1 ~ F4 forms the oscillator that two frequencies do not wait, during circuit starting of oscillation, piezoelectric ceramic piece B will send " beep-beep " alarm sound.Rectifier bridge Q, electric capacity C1 and electric capacity C2 form capacitance decompression bridge rectifier mu balanced circuit, and when 220V electrical network normal power supply, electric capacity C2 two ends export the direct current of about 15V, and direct current one tunnel makes LED luminous through resistance R1, represent that mains supply is normal; The port one of photoelectrical coupler U1 is injected through resistance R2 in another road, makes the built-in luminotron electrified light emitting of photoelectrical coupler U1, the thus built-in phototriode conducting of photoelectrical coupler U1.The port 5 of photoelectrical coupler U1 is low level, and input 1 end making Sheffer stroke gate F1 is also low level, at this moment oscillatory circuit failure of oscillation, and piezoelectric ceramic piece B is noiseless; Galvanic Article 3 branch road fills about 15V direct current through diode D2 with to electric capacity C5, is electric capacity C5 stored charge.Once 220V AC network has a power failure, electric capacity C2 is stored electric charge and is released by resistance R1 and LED, drops to 0V very soon.At this moment electric pilot lamp LED is had to extinguish.Meanwhile, the built-in light emitting diode of photoelectrical coupler U1 also extinguishes thereupon, and phototriode ends, photoelectrical coupler U1 port 5 exports high level, input 1 end making Sheffer stroke gate F1 is also high level, so oscillatory circuit starting of oscillation, piezoelectric ceramic piece B just sends " beep-beep-" chimes of doom.The required power supply of oscillatory circuit vibration carrys out the electric charge that self-capacitance C5 stores, and at this moment diode D2 ends, and electric capacity C5 stores electric charge can not deliver to diode D2 left side circuit.Electric capacity C5 stores electric charge only for oscillatory circuit, and because electric capacity C5 capacity is very large, and oscillatory circuit power consumption is minimum, meets request for utilization.When power system restoration is powered, LED etc. light again, and photoelectrical coupler U1 port 5 output low level, oscillatory circuit failure of oscillation, electric capacity C5 is full of electric charge again.
Claims (3)
1. an alarm for electricity failure circuit, comprise oscillatory circuit, regulator rectifier circuit, photoelectric coupling circuit and warning circuit, it is characterized in that, described oscillatory circuit comprises Sheffer stroke gate F1, resistance R4 and Sheffer stroke gate F2, described regulator rectifier circuit comprises rectifier bridge Q, resistance R1 and diode D1, described photoelectric coupling circuit comprises photoelectrical coupler U1, resistance R2 and diode D2, and described warning circuit comprises electric capacity C4 and piezoelectric ceramic piece B;
Described rectifier bridge Q port one connects electric capacity C1, the electric capacity C1 other end connects 220V alternating current, the 220V alternating current other end connects rectifier bridge Q port 3, rectifier bridge Q port 2 is contact resistance R1 respectively, diode D1 negative pole, electric capacity C2, resistance R2 and diode D2 positive pole, diode D2 negative pole connects direct earth capacitance C5 and resistance R3 respectively, the resistance R3 other end connects photoelectrical coupler U1 port one respectively and Sheffer stroke gate F1 inputs 1 end, Sheffer stroke gate F1 inputs 2 ends contact resistance R4 and electric capacity C3 respectively, the resistance R4 other end connects Sheffer stroke gate F1 output terminal respectively, Sheffer stroke gate F2 inputs 1 end and Sheffer stroke gate F2 inputs 2 ends, Sheffer stroke gate F2 output terminal connects the electric capacity C3 other end respectively and Sheffer stroke gate F3 inputs 1 end, Sheffer stroke gate F3 inputs 2 ends contact resistance R5 and electric capacity C4 respectively, the resistance R5 other end connects Sheffer stroke gate F4 output terminal respectively, Sheffer stroke gate F4 inputs 1 end and Sheffer stroke gate F4 inputs 2 ends, Sheffer stroke gate F4 output terminal connects the electric capacity C4 other end and piezoelectric ceramic piece B respectively, the piezoelectric ceramic piece B other end connects photoelectrical coupler U1 port 2, photoelectrical coupler U1 port 4, the electric capacity C2 other end, diode D1 positive pole, LED negative pole and rectifier bridge port 4 also ground connection, the LED positive pole contact resistance R1 other end, the photoelectrical coupler U1 port 3 contact resistance R2 other end.
2. alarm for electricity failure circuit according to claim 1, is characterized in that, described photoelectrical coupler U1 model is 4N25, and rectifier bridge Q model is 1N4001.
3. alarm for electricity failure circuit according to claim 1, is characterized in that, described electric capacity C5 serves as the power supply of whole alarm circuit, and when the power-off of 220V alternating current, the electric charge stored by electric capacity C5 is that oscillatory circuit is powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420592649.2U CN204142826U (en) | 2014-09-26 | 2014-09-26 | A kind of alarm for electricity failure circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420592649.2U CN204142826U (en) | 2014-09-26 | 2014-09-26 | A kind of alarm for electricity failure circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142826U true CN204142826U (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420592649.2U Expired - Fee Related CN204142826U (en) | 2014-09-26 | 2014-09-26 | A kind of alarm for electricity failure circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067869A (en) * | 2015-08-13 | 2015-11-18 | 何林 | Municipal power failure sound/light reminding device |
-
2014
- 2014-09-26 CN CN201420592649.2U patent/CN204142826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067869A (en) * | 2015-08-13 | 2015-11-18 | 何林 | Municipal power failure sound/light reminding device |
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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: 20150204 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |