CN205139233U - Power failure alarm - Google Patents
Power failure alarm Download PDFInfo
- Publication number
- CN205139233U CN205139233U CN201520840211.6U CN201520840211U CN205139233U CN 205139233 U CN205139233 U CN 205139233U CN 201520840211 U CN201520840211 U CN 201520840211U CN 205139233 U CN205139233 U CN 205139233U
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- emitting diode
- electric capacity
- diode
- light emitting
- negative pole
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Abstract
The utility model discloses a power failure alarm, including diode VD, electric capacity C1, emitting diode VD1, opto -coupler U1, triode VT1, buzzer B and switch S, the anodal 220V alternating current one end of connecting of diode VD, diode VD negative pole is connecting resistance R1 respectively, electric capacity C1 and resistance R2, emitting diode was anodal in opto -coupler U1 was connected to the resistance R2 other end, opto -coupler U1 is connected the 220V alternating current other end respectively by the emitting diode negative pole, the emitting diode VD1 negative pole and the electric capacity C1 other end, the anodal connecting resistance R1 other end of emitting diode VD1. The utility model discloses aim at providing the power failure alarm circuit that circuit structure is simple, the function is practical for the place that need not drop into very big cost installation stand -by power supply automatic switching control equipment, in case these places take place the power failure trouble, the alarm circuit will send the light and the sound reminds people to make equitable reply, has simple, with low costs, the small characteristics of circuit structure.
Description
Technical field
The utility model relates to a kind of alarm, specifically a kind of alarm for electricity failure.
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.
Utility model content
The purpose of this utility model is to provide a kind of alarm for electricity failure, 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, comprises diode VD, electric capacity C1, light emitting diode VD1, optocoupler U1, triode VT1, hummer B and switch S, described diode VD positive pole connects 220V alternating current one end, and diode VD negative pole is contact resistance R1 respectively, electric capacity C1 and resistance R2, the resistance R2 other end connects light emitting diode positive pole in optocoupler U1, and optocoupler U1 is connected the 220V alternating current other end respectively by light emitting diode negative pole, light emitting diode VD1 negative pole and the electric capacity C1 other end, the light emitting diode VD1 positive pole contact resistance R1 other end, phototriode collector contact resistance R3 respectively in optocoupler U1, resistance R4 and triode VT1 base stage, triode VT1 collector connecting triode VT2 base stage, triode VT2 emitter is the contact resistance R3 other end and switch S respectively, and the switch S other end connects electric battery E positive pole, and electric battery E negative pole connects electric capacity C3 respectively, light emitting diode VD2 negative pole, hummer B, phototriode emitter in triode VT1 emitter and optocoupler U1, the electric capacity C3 other end is the contact resistance R4 other end and electric capacity C2, electric capacity C2 other end connecting triode VT2 collector respectively respectively, the hummer B other end and light emitting diode VD2 positive pole.
As further program of the utility model: described optocoupler U1 adopts 4N25.
As the utility model further scheme: described electric battery E voltage is 3V.
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 there is power-off fault in these places, alarm circuit will send light and the sound reminds people to make rational reply, has the advantages that circuit structure is simple, cost is low, volume is little.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of alarm for electricity failure.
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, comprises diode VD, electric capacity C1, light emitting diode VD1, optocoupler U1, triode VT1, hummer B and switch S, diode VD positive pole connects 220V alternating current one end, and diode VD negative pole is contact resistance R1 respectively, electric capacity C1 and resistance R2, the resistance R2 other end connects light emitting diode positive pole in optocoupler U1, and optocoupler U1 is connected the 220V alternating current other end respectively by light emitting diode negative pole, light emitting diode VD1 negative pole and the electric capacity C1 other end, the light emitting diode VD1 positive pole contact resistance R1 other end, phototriode collector contact resistance R3 respectively in optocoupler U1, resistance R4 and triode VT1 base stage, triode VT1 collector connecting triode VT2 base stage, triode VT2 emitter is the contact resistance R3 other end and switch S respectively, and the switch S other end connects electric battery E positive pole, and electric battery E negative pole connects electric capacity C3 respectively, light emitting diode VD2 negative pole, hummer B, phototriode emitter in triode VT1 emitter and optocoupler U1, the electric capacity C3 other end is the contact resistance R4 other end and electric capacity C2, electric capacity C2 other end connecting triode VT2 collector respectively respectively, the hummer B other end and light emitting diode VD2 positive pole.
Optocoupler U1 adopts 4N25.
Electric battery E voltage is 3V.
Principle of work of the present utility model is: refer to Fig. 1, circuit is by exchanging detection (left-half) and audio frequency oscillator (right half part) forms, alternating current 220v is through VD rectification, C1 filtering obtains 300V high direct voltage, this direct current one tunnel makes light emitting diode VD1 luminous through R1, optocoupler 4N25 is sent into through R2 in another road, inner light emitting diode pipe is lighted, illumination is mapped on its inner phototriode, this phototriode is low resistance conduction, move V1 base potential to electronegative potential, audio frequency oscillator cannot normally work, hummer and the equal no current of light emitting diode VD2 flow through, neither sounding is not luminous yet.
Once have a power failure suddenly, loss of voltage is detected at C1 two ends, VD1 extinguishes, the light emitting diode of optocoupler inside also extinguishes thereupon, and in it, phototriode is not subject to illumination is high resistant, and the base stage of VT1 is no longer shorted to ground by optocoupler, the audio frequency oscillator of the element compositions such as VT1, VT2 meets oscillating condition and starts vibration, make hummer B and VD2 sounding, luminescence, when city power recovery powers, VD1 is luminous.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. an alarm for electricity failure, comprises diode VD, electric capacity C1, light emitting diode VD1, optocoupler U1, triode VT1, hummer B and switch S, is characterized in that, described diode VD positive pole connects 220V alternating current one end, and diode VD negative pole is contact resistance R1 respectively, electric capacity C1 and resistance R2, the resistance R2 other end connects light emitting diode positive pole in optocoupler U1, and optocoupler U1 is connected the 220V alternating current other end respectively by light emitting diode negative pole, light emitting diode VD1 negative pole and the electric capacity C1 other end, the light emitting diode VD1 positive pole contact resistance R1 other end, phototriode collector contact resistance R3 respectively in optocoupler U1, resistance R4 and triode VT1 base stage, triode VT1 collector connecting triode VT2 base stage, triode VT2 emitter is the contact resistance R3 other end and switch S respectively, and the switch S other end connects electric battery E positive pole, and electric battery E negative pole connects electric capacity C3 respectively, light emitting diode VD2 negative pole, hummer B, phototriode emitter in triode VT1 emitter and optocoupler U1, the electric capacity C3 other end is the contact resistance R4 other end and electric capacity C2, electric capacity C2 other end connecting triode VT2 collector respectively respectively, the hummer B other end and light emitting diode VD2 positive pole.
2. alarm for electricity failure according to claim 1, is characterized in that, described optocoupler U1 adopts 4N25.
3. alarm for electricity failure according to claim 1, is characterized in that, described electric battery E voltage is 3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840211.6U CN205139233U (en) | 2015-10-27 | 2015-10-27 | Power failure alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840211.6U CN205139233U (en) | 2015-10-27 | 2015-10-27 | Power failure alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205139233U true CN205139233U (en) | 2016-04-06 |
Family
ID=55625013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520840211.6U Expired - Fee Related CN205139233U (en) | 2015-10-27 | 2015-10-27 | Power failure alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205139233U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698924A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless vibration sensor based on wifi |
| CN105702010A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless soil moisture content sensing device based on wifi communication |
| CN108957108A (en) * | 2018-08-17 | 2018-12-07 | 无锡麟力科技有限公司 | A kind of mains failure detection circuit |
-
2015
- 2015-10-27 CN CN201520840211.6U patent/CN205139233U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698924A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless vibration sensor based on wifi |
| CN105702010A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless soil moisture content sensing device based on wifi communication |
| CN108957108A (en) * | 2018-08-17 | 2018-12-07 | 无锡麟力科技有限公司 | A kind of mains failure detection circuit |
| CN108957108B (en) * | 2018-08-17 | 2024-03-12 | 无锡麟力科技有限公司 | Commercial power outage detection circuit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20161027 |