CN204858549U - Rural announce machine protection circuit - Google Patents
Rural announce machine protection circuit Download PDFInfo
- Publication number
- CN204858549U CN204858549U CN201520566303.XU CN201520566303U CN204858549U CN 204858549 U CN204858549 U CN 204858549U CN 201520566303 U CN201520566303 U CN 201520566303U CN 204858549 U CN204858549 U CN 204858549U
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- electric capacity
- triode
- resistance
- rectifier bridge
- contact resistance
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Abstract
The utility model discloses a rural announce machine protection circuit, including rectifier bridge T, electric capacity C1, resistance R1 and triode V1, electric capacity C1's one end connecting resistance R1 and 220V alternating current, electric capacity C1's other end connecting resistance R7's the other end, the port 1 that transient voltage restraines diode DW and rectifier bridge T, rectifier bridge T's port 3 is connected transient voltage and is restrained diode DW's the other end and the other end of 220V alternating current. The utility model discloses rural announce machine protection circuit simple structure, components and parts are few, reduce the harm of grid fluctuation to equipment through increase spike voltage suppression component in the circuit to utilize electric capacity and tripolar spot component group to become outage protective film piece, can effectual protective apparatus when running into the tripping operation with the outage, have consequently that the cost of manufacture is low, stable performance and an effectual advantage of protection.
Description
Technical field
The utility model relates to a kind of protective circuit, specifically a kind of countryside broadcast equipment protection circuit.
Background technology
Along with the fast development of information-based science and technology, most domestic rural area is covered with broadcast, various broadcast program can not only be listened to, and facilitate the communicating information of rural organization department, therefore greatly facilitate the life of rural area people, but due to rural power grids line quality poor, especially often there is power-off and trip phenomenon when peak of power consumption in summer, thus make broadcaster open at short notice and turn off, and then produce larger peak voltage, cause great damage to broadcaster.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the countryside broadcast equipment protection circuit of stable performance, 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 countryside broadcast equipment protection circuit, comprises rectifier bridge T, electric capacity C1, resistance R1 and triode V1, one end contact resistance R1 of described electric capacity C1 and 220V alternating current, the other end of the other end contact resistance R7 of electric capacity C1, the port one of transient voltage suppressor diode DW and rectifier bridge T, the port 3 of rectifier bridge T connects the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, the port 2 contact resistance R2 of rectifier bridge T, resistance R6, resistance R7, the emitter of triode V2, the collector electrode of triode V3, electric capacity C2, the not moved end 2 of the positive pole of unidirectional thyristor Q1 and the contact J-1 of relay J, the negative pole of unidirectional thyristor Q1 connects relay J, and the other end of relay J connects the other end of electric capacity C2, electric capacity C3, electric capacity C4, resistance R3, resistance R4, resistance R5, the anode of diode D1, the port 4 of rectifier bridge T, the emitter of triode V1 and broadcaster P, the control pole of unidirectional thyristor Q1 connects the other end of electric capacity C3, the other end of resistance R2 and the collector electrode of triode V1, the other end of base stage contact resistance R4 of triode V1 and the source electrode of field effect transistor Q2, the other end of the grid contact resistance R3 of field effect transistor Q2, the not moved end 3 of the negative electrode of diode D1 and the contact J-1 of relay J, the other end of drain electrode contact resistance R7 of field effect transistor Q2 and the base stage of triode V2, the other end of collector electrode contact resistance R5 of triode V2 and the base stage of triode V3, the emitter of triode V3 connects the other end of electric capacity C5 and broadcaster P, the other end of the other end contact resistance R6 of electric capacity C5.
As preferred version of the present utility model: the model of described transient voltage suppressor diode DW is SMAJ12.0A.
Compared with prior art; the beneficial effects of the utility model are: the utility model countryside broadcast equipment protection circuit structure is simple, components and parts are few; power network fluctuation is reduced to the infringement of equipment by increasing peak voltage suppression element in circuit; and utilize electric capacity and triode lamp element composition power failure protection module; can effective proterctive equipment when running into tripping operation and power-off, therefore have that cost of manufacture is low, stable performance and a good advantage of protected effect.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of countryside broadcast equipment protection 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 countryside broadcast equipment protection circuit, comprises rectifier bridge T, electric capacity C1, resistance R1 and triode V1, one end contact resistance R1 of described electric capacity C1 and 220V alternating current, the other end of the other end contact resistance R7 of electric capacity C1, the port one of transient voltage suppressor diode DW and rectifier bridge T, the port 3 of rectifier bridge T connects the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, the port 2 contact resistance R2 of rectifier bridge T, resistance R6, resistance R7, the emitter of triode V2, the collector electrode of triode V3, electric capacity C2, the not moved end 2 of the positive pole of unidirectional thyristor Q1 and the contact J-1 of relay J, the negative pole of unidirectional thyristor Q1 connects relay J, and the other end of relay J connects the other end of electric capacity C2, electric capacity C3, electric capacity C4, resistance R3, resistance R4, resistance R5, the anode of diode D1, the port 4 of rectifier bridge T, the emitter of triode V1 and broadcaster P, the control pole of unidirectional thyristor Q1 connects the other end of electric capacity C3, the other end of resistance R2 and the collector electrode of triode V1, the other end of base stage contact resistance R4 of triode V1 and the source electrode of field effect transistor Q2, the other end of the grid contact resistance R3 of field effect transistor Q2, the not moved end 3 of the negative electrode of diode D1 and the contact J-1 of relay J, the other end of drain electrode contact resistance R7 of field effect transistor Q2 and the base stage of triode V2, the other end of collector electrode contact resistance R5 of triode V2 and the base stage of triode V3, the emitter of triode V3 connects the other end of electric capacity C5 and broadcaster P, the other end of the other end contact resistance R6 of electric capacity C5.
The model of transient voltage suppressor diode DW is SMAJ12.0A.
Operation principle of the present utility model is: 220V line voltage provides direct voltage to circuit after electric capacity C1 and resistance R1 step-down, rectifier bridge T rectification, transient voltage suppressor diode DW effectively can eliminate the peak voltage that power-supply fluctuation produces, prevent the impact because power network fluctuation causes desk lamp brightness, during normal power supply, R2 charges to C3, by R1, triggers thyristor Q1 conducting, relay J adhesive, its now its contact J-1 1,2 pin connect; Electric capacity C4 starts charging, and circuit is in the readiness of power-failure protecting.Once down circuitry, relay J dead electricity, normally opened contact J-1 discharges, and 1,3 pin are connected, and are added on the grid of Q2 after the tension discharge on electric capacity C4.Because grid and source electrode, drain between there is no contacting of electric current.Therefore the electric charge on C4 remains unchanged substantially.Voltage on C4 is added between the grid source electrode of Q2, makes to form certain conducting channel between the drain electrode of field-effect transistor Q2 and source electrode, is equivalent to switch closed condition.During this period of time, if power supply incoming call, Q2 is in conducting state, therefore V3 conducting, and bidirectional thyristor VTH2 treats to end less than trigger current, and refrigerator does not work.During this period of time; the upper sampling voltage of R6 makes transistor turns all the time; triode V3 maintains conducting; as the buffer time of unexpected power-off; and when sending a telegram here suddenly, because the voltage on electric capacity C5 can not suddenly change, therefore need ability conducting after the charging of short time; and then power to broadcaster, reach the object of power-off and incoming call delay protection.
Claims (2)
1. a countryside broadcast equipment protection circuit, comprises rectifier bridge T, electric capacity C1, resistance R1 and triode V1, is characterized in that, one end contact resistance R1 of described electric capacity C1 and 220V alternating current, the other end of the other end contact resistance R7 of electric capacity C1, the port one of transient voltage suppressor diode DW and rectifier bridge T, the port 3 of rectifier bridge T connects the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, the port 2 contact resistance R2 of rectifier bridge T, resistance R6, resistance R7, the emitter of triode V2, the collector electrode of triode V3, electric capacity C2, the not moved end 2 of the positive pole of unidirectional thyristor Q1 and the contact J-1 of relay J, the negative pole of unidirectional thyristor Q1 connects relay J, and the other end of relay J connects the other end of electric capacity C2, electric capacity C3, electric capacity C4, resistance R3, resistance R4, resistance R5, the anode of diode D1, the port 4 of rectifier bridge T, the emitter of triode V1 and broadcaster P, the control pole of unidirectional thyristor Q1 connects the other end of electric capacity C3, the other end of resistance R2 and the collector electrode of triode V1, the other end of base stage contact resistance R4 of triode V1 and the source electrode of field effect transistor Q2, the other end of the grid contact resistance R3 of field effect transistor Q2, the not moved end 3 of the negative electrode of diode D1 and the contact J-1 of relay J, the other end of drain electrode contact resistance R7 of field effect transistor Q2 and the base stage of triode V2, the other end of collector electrode contact resistance R5 of triode V2 and the base stage of triode V3, the emitter of triode V3 connects the other end of electric capacity C5 and broadcaster P, the other end of the other end contact resistance R6 of electric capacity C5.
2. a kind of countryside broadcast equipment protection circuit according to claim 1, is characterized in that, the model of described transient voltage suppressor diode DW is SMAJ12.0A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520566303.XU CN204858549U (en) | 2015-07-30 | 2015-07-30 | Rural announce machine protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520566303.XU CN204858549U (en) | 2015-07-30 | 2015-07-30 | Rural announce machine protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204858549U true CN204858549U (en) | 2015-12-09 |
Family
ID=54749068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520566303.XU Expired - Fee Related CN204858549U (en) | 2015-07-30 | 2015-07-30 | Rural announce machine protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204858549U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992494A (en) * | 2017-05-04 | 2017-07-28 | 安徽庆睿实业有限责任公司 | Refrigerator with circuit protection function |
| CN113958866A (en) * | 2021-09-27 | 2022-01-21 | 天合光能(宿迁)光电有限公司 | Energy-saving and consumption-reducing process for nitrogen of vacuum pump |
-
2015
- 2015-07-30 CN CN201520566303.XU patent/CN204858549U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992494A (en) * | 2017-05-04 | 2017-07-28 | 安徽庆睿实业有限责任公司 | Refrigerator with circuit protection function |
| CN113958866A (en) * | 2021-09-27 | 2022-01-21 | 天合光能(宿迁)光电有限公司 | Energy-saving and consumption-reducing process for nitrogen of vacuum pump |
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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: 20151209 Termination date: 20160730 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |