CN204926388U - Alarm - Google Patents
Alarm Download PDFInfo
- Publication number
- CN204926388U CN204926388U CN201520701141.6U CN201520701141U CN204926388U CN 204926388 U CN204926388 U CN 204926388U CN 201520701141 U CN201520701141 U CN 201520701141U CN 204926388 U CN204926388 U CN 204926388U
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- China
- Prior art keywords
- resistance
- diode
- electric capacity
- relay
- triode
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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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- 230000005669 field effect Effects 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
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- Emergency Alarm Devices (AREA)
Abstract
本实用新型公开了一种报警器，包括金属板A、金属板B、继电器J、场效应管VT1、电阻R1、电容C1、二极管D1和蜂鸣器B，金属板A分别连接电源VCC、场效应管VT1的D极、继电器J线圈和继电器J触点J-1，金属板B分别连接电阻R1、电容C1和场效应管VT1的G极，场效应管VT1的S极分别连接电阻R2和二极管VS负极，二极管VS正极通过电阻R3连接三极管VT2基极，三极管VT2集电极连接继电器J线圈另一端，继电器J触点J-1另一端分别连接电阻R4、电阻R6和三极管VT5发射极，电阻R4另一端连接双基极二极管VT3第一基极。本实用新型报警器电路结构简单，体积小，成本低，稳定性好，在发生火灾时能非常及时的发出警报声，安全性高，非常适合推广使用。
The utility model discloses an alarm, which comprises a metal plate A, a metal plate B, a relay J, a field effect tube VT1, a resistor R1, a capacitor C1, a diode D1 and a buzzer B. The metal plate A is respectively connected to a power supply VCC, a field The D pole of the effect transistor VT1, the relay J coil and the relay J contact J-1, the metal plate B are respectively connected to the resistor R1, the capacitor C1 and the G pole of the field effect transistor VT1, and the S pole of the field effect transistor VT1 is respectively connected to the resistor R2 and Diode VS negative pole, diode VS positive pole are connected to the base of triode VT2 through resistor R3, the collector of triode VT2 is connected to the other end of relay J coil, the other end of relay J contact J-1 is respectively connected to resistor R4, resistor R6 and triode VT5 emitter, resistor The other end of R4 is connected to the first base of the double-base diode VT3. The alarm circuit of the utility model has the advantages of simple circuit structure, small size, low cost and good stability, and can send out an alarm sound in time when a fire occurs, has high safety, and is very suitable for popularization and use.
Description
Technical field
The utility model relates to a kind of warning device, specifically a kind of alarm.
Background technology
In Modern Family, many people cause fire failure because being ignorant of household safe general knowledge, and happy family in perfectly good condition is in the twinkling of an eye destroyed overnight, and what have is even with one's family broken up.Once generation family fire, mishandling, report to the police slow, the heavy losses of personnel and property can be caused.
Utility model content
The purpose of this utility model is to provide a kind of alarm, 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, comprises metal plate A, metal plate B, relay J, field effect transistor VT1, resistance R1, electric capacity C1, diode D1 and hummer B, described metal plate A connects power supply VCC respectively, the D pole of field effect transistor VT1, relay J coil and relay J contact J-1, metal plate B is contact resistance R1 respectively, the G pole of electric capacity C1 and field effect transistor VT1, S pole contact resistance R2 and the diode VS negative pole respectively of field effect transistor VT1, diode VS positive pole is by resistance R3 connecting triode VT2 base stage, the triode VT2 collector connection relay J coil other end, the relay J contact J-1 other end is contact resistance R4 respectively, resistance R6 and triode VT5 emitter, the resistance R4 other end connects double base diode VT3 first base stage, double base diode VT3 emitter connects diode D1 positive pole, diode D1 negative pole is by resistance R7 connecting triode VT4 base stage, triode VT4 emitter is connecting triode VT5 base stage and electric capacity C3 respectively, the electric capacity C3 other end is contact resistance R8 and electric capacity C4 respectively, the electric capacity C4 other end is connecting triode VT5 collector and hummer B, hummer B other end connecting triode VT4 collector respectively respectively, the resistance R8 other end, electric capacity C2, resistance R5, triode VT2 emitter, the resistance R2 other end, the resistance R1 other end and the electric capacity C1 other end, the electric capacity C2 other end connects double base diode VT3 second base stage, the described electric capacity C2 other end contact resistance R6 other end.
As the utility model further scheme: described power supply VCC voltage is 12V.
Compared with prior art, the beneficial effects of the utility model are: the utility model alarm circuit structure is simple, and volume is little, and cost is low, good stability, and can sound the alarm at the right time when breaking out of fire, security is high, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of alarm.
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, comprises metal plate A, metal plate B, relay J, field effect transistor VT1, resistance R1, electric capacity C1, diode D1 and hummer B, metal plate A connects power supply VCC respectively, the D pole of field effect transistor VT1, relay J coil and relay J contact J-1, metal plate B is contact resistance R1 respectively, the G pole of electric capacity C1 and field effect transistor VT1, S pole contact resistance R2 and the diode VS negative pole respectively of field effect transistor VT1, diode VS positive pole is by resistance R3 connecting triode VT2 base stage, the triode VT2 collector connection relay J coil other end, the relay J contact J-1 other end is contact resistance R4 respectively, resistance R6 and triode VT5 emitter, the resistance R4 other end connects double base diode VT3 first base stage, double base diode VT3 emitter connects diode D1 positive pole, diode D1 negative pole is by resistance R7 connecting triode VT4 base stage, triode VT4 emitter is connecting triode VT5 base stage and electric capacity C3 respectively, the electric capacity C3 other end is contact resistance R8 and electric capacity C4 respectively, the electric capacity C4 other end is connecting triode VT5 collector and hummer B, hummer B other end connecting triode VT4 collector respectively respectively, the resistance R8 other end, electric capacity C2, resistance R5, triode VT2 emitter, the resistance R2 other end, the resistance R1 other end and the electric capacity C1 other end, the electric capacity C2 other end connects double base diode VT3 second base stage, the electric capacity C2 other end contact resistance R6 other end.
Power supply VCC voltage is 12V.
Principle of work of the present utility model is: refer to Fig. 1, A, B is two parallel sheet metals, and A, B is two electrodes of flame detection, when there is no flame, two electric electrode insulations, at this moment the grid of field effect transistor VT1 is through resistance R1 ground connection, and the voltage that drain current produces on source resistance R2 is as the grid bias (negative-gate voltage) of field effect transistor, be added in grid, at this moment VT1 is operated in negative-gate voltage state, drain current is very little, therefore, voltage stabilizing diode VS not conducting, VT2 ends, relay J not adhesive, the alarm generator power-off of VT3 ~ VT5 composition, there is no alarm sound.
When there being flame, two interelectrode gases are at high temperature ionized, and conduct electricity between A, B pole plate, and the drain current of field effect transistor VT1 increases, voltage drop on R2 increases, the breakdown conducting of voltage stabilizing diode VS, and VT2 is conducting also, relay J adhesive, connects alarm generator, sends chimes of doom.
VT3 ~ VT5 forms alarm generator, can produce the same sound of urgent siren, cause nervous sensation to people, VT3 forms triangular-wave generator, its triangular wave exported is added to the input end of the audio frequency oscillator of the compositions such as VT4 and VT5, makes hummer B export police whistle sound and slowly rises and decline.
Claims (2)
1. an alarm, comprises metal plate A, metal plate B, relay J, field effect transistor VT1, resistance R1, electric capacity C1, diode D1 and hummer B, is characterized in that, described metal plate A connects power supply VCC respectively, the D pole of field effect transistor VT1, relay J coil and relay J contact J-1, metal plate B is contact resistance R1 respectively, the G pole of electric capacity C1 and field effect transistor VT1, S pole contact resistance R2 and the diode VS negative pole respectively of field effect transistor VT1, diode VS positive pole is by resistance R3 connecting triode VT2 base stage, the triode VT2 collector connection relay J coil other end, the relay J contact J-1 other end is contact resistance R4 respectively, resistance R6 and triode VT5 emitter, the resistance R4 other end connects double base diode VT3 first base stage, double base diode VT3 emitter connects diode D1 positive pole, diode D1 negative pole is by resistance R7 connecting triode VT4 base stage, triode VT4 emitter is connecting triode VT5 base stage and electric capacity C3 respectively, the electric capacity C3 other end is contact resistance R8 and electric capacity C4 respectively, the electric capacity C4 other end is connecting triode VT5 collector and hummer B, hummer B other end connecting triode VT4 collector respectively respectively, the resistance R8 other end, electric capacity C2, resistance R5, triode VT2 emitter, the resistance R2 other end, the resistance R1 other end and the electric capacity C1 other end, the electric capacity C2 other end connects double base diode VT3 second base stage, the described electric capacity C2 other end contact resistance R6 other end.
2. alarm according to claim 1, is characterized in that, described power supply VCC voltage is 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701141.6U CN204926388U (en) | 2015-09-07 | 2015-09-07 | Alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701141.6U CN204926388U (en) | 2015-09-07 | 2015-09-07 | Alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204926388U true CN204926388U (en) | 2015-12-30 |
Family
ID=54975497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520701141.6U Expired - Fee Related CN204926388U (en) | 2015-09-07 | 2015-09-07 | Alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204926388U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107050726A (en) * | 2017-05-16 | 2017-08-18 | 长沙金定信息技术有限公司 | A kind of fire control system based on power line carrier, PLC |
-
2015
- 2015-09-07 CN CN201520701141.6U patent/CN204926388U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107050726A (en) * | 2017-05-16 | 2017-08-18 | 长沙金定信息技术有限公司 | A kind of fire control system based on power line carrier, PLC |
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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: 20151230 Termination date: 20160907 |