CN204517363U - Electrical network lightning protection over-voltage automatic power-off control device - Google Patents
Electrical network lightning protection over-voltage automatic power-off control device Download PDFInfo
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- CN204517363U CN204517363U CN201520213568.1U CN201520213568U CN204517363U CN 204517363 U CN204517363 U CN 204517363U CN 201520213568 U CN201520213568 U CN 201520213568U CN 204517363 U CN204517363 U CN 204517363U
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- voltage
- relay
- potentiometer
- triode
- transformer
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Abstract
The utility model discloses a kind of electrical network lightning protection over-voltage automatic power-off control device, connected to form according to circuit theory diagrams by power input terminal, power output terminal, transformer, diode, voltage stabilizing didoe, electric capacity, resistance, potentiometer, triode, controllable silicon and relay.Transformer is autotransformer, and the voltage between its 1-2 pin is set to 400V, and the voltage between 2-3 pin is set to 20V.Described relay is the time relay connected after contact obtains electric time delay.The utility model is reasonable in design, structure is simple, do that interference is strong, reliable in action, cost are low, power supply applicability is strong.Once voltage exceedes allowed band get final product auto-breaking, voltage resume normally can be connected again automatically, plays a protective role to household electrical appliances.
Description
Technical field
The utility model relates to electrical equipment automatic safety device technical field, is specifically related to a kind of electrical network lightning protection over-voltage automatic power-off control device.
Background technology
When certain reason makes line voltage raise suddenly, the damage that the household electrical appliance such as refrigerator, washing machine, television set, sound equipment, computer run suffer in various degree can be made, also can therefore breaking out of fire time serious, cause very large economic loss.At present, existing overvoltage protection, has complex structure, cost is high, maintenance difficult, power supply are poor for applicability and can not realizes the automatic function recovered.
Summary of the invention
The purpose of this utility model is exactly the defect existed for prior art, provides a kind of electrical network lightning protection over-voltage automatic power-off control device.
Its technical scheme is: electrical network lightning protection over-voltage automatic power-off control device, by power input terminal, power output terminal, transformer, diode, voltage stabilizing didoe, electric capacity, resistance, potentiometer, triode, controllable silicon and relay composition, one end of described power input terminal and 1 pin of transformer, one end of relay and one end of relay normally open contact are connected, the other end of relay normally open contact is connected with one end of power output terminal, 2 pin of described transformer are connected with the positive pole of diode, the negative pole of diode and the positive pole of electric capacity, one quiet end of potentiometer and one end of resistance are connected, the other end of resistance controls pole with the collector electrode of triode and silicon controlled and is connected, the moved end of potentiometer is connected with the negative pole of voltage stabilizing didoe, the positive pole of voltage stabilizing didoe is connected with the base stage of triode, silicon controlled anode is connected with the other end of relay, 3 pin of the other end of described power input terminal and the other end of power output terminal, transformer, the negative pole of electric capacity, another quiet end of potentiometer, the emitter of triode and silicon controlled negative electrode are connected.
Wherein, described transformer is autotransformer, and the voltage between its 1-2 pin is set to 400V, and the voltage between 2-3 pin is set to 20V.Described relay is the time relay connected after contact obtains electric time delay.The model of described diode is 1N4007; The model of described voltage stabilizing didoe is 2CW12; The capacity of described electric capacity is 100 μ F; The resistance of described resistance is 5.1k ohm; Described potentiometer is the multiturn potentiometer of resistance 100k ohm; The model 8050 of described triode; Described controllable silicon is bidirectional triode thyristor, and its rated current is greater than 1A.
The utility model compared with prior art, has the following advantages: reasonable in design, structure is simple, do that interference is strong, reliable in action, cost are low, power supply applicability is strong.Once voltage exceedes allowed band get final product auto-breaking, voltage resume normally can be connected again automatically, plays a protective role to household electrical appliances.
Accompanying drawing explanation
Fig. 1 is the electric current principle figure of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1, a kind of electrical network lightning protection over-voltage automatic power-off control device, by power input terminal M, power output terminal N, transformer B, diode D, voltage stabilizing didoe DW, electric capacity C, resistance R, potentiometer W, triode T, controllable silicon G and relay J composition, one end of described power input terminal M and 1 pin of transformer B, one end of relay J and one end of relay normally open contact J-1 are connected, the other end of relay normally open contact J-1 is connected with one end of power output terminal N, 2 pin of described transformer B are connected with the positive pole of diode D, the negative pole of diode D and the positive pole of electric capacity C, the one quiet end of potentiometer W and one end of resistance are connected, the other end of resistance R is connected with the control pole of the collector electrode of triode T and controllable silicon G, the moved end of potentiometer W is connected with the negative pole of voltage stabilizing didoe DW, the positive pole of voltage stabilizing didoe DW is connected with the base stage of triode T, the anode of controllable silicon G is connected with the other end of relay J, another quiet end of 3 pin of the other end of described power input terminal M and the other end of power output terminal N, transformer B, the negative pole of electric capacity C, potentiometer W, the emitter of triode T and the negative electrode of controllable silicon G are connected.
Wherein, described transformer B is autotransformer, and the voltage between its 1-2 pin is set to 400V, and the voltage between 2-3 pin is set to 20V.Described relay J is the time relay connected after contact obtains electric time delay.The model of described diode D is 1N4007; The model of described voltage stabilizing didoe DW is 2CW12; The capacity of described electric capacity C is 100 μ F; The resistance of described resistance R is 5.1k ohm; Described potentiometer W is the multiturn potentiometer of resistance 100k ohm; The model 8050 of described triode T; Described controllable silicon G is bidirectional triode thyristor, and its rated current is greater than 1A.
During use, power input terminal M is connected 380V or 220V AC power, for 220 V, its operation principle is described below, power output terminal N connection electric loading; Transformer B is by after the step-down of 220V electric main, export through diode D1 rectification from 2-3 pin, capacitor C filtering, obtains the direct voltage of about 12V, this direct voltage is leaded up to resistance R and is triggered controllable silicon G conducting, separately leads up to potentiometer W dividing potential drop through voltage stabilizing didoe DW connecting triode T.When line voltage is normal, voltage stabilizing didoe DW can not breakdown conducting, and now triode T is in cut-off state, and bidirectional triode thyristor is subject to the conducting of voltage triggered face, the household electrical appliances energising work in power output terminal N.If the line voltage connecting power input terminal M raises suddenly; during more than 250V, voltage stabilizing didoe DW is just caused to puncture conducting at the voltage of potentiometer W moved end, after voltage stabilizing didoe DW conducting; make again triode T conducting; the pressure drop of its Collector Emitter is very little, is not enough to trigger controllable silicon G, causes controllable silicon G to end rapidly; relay J dead electricity; relay normally open contact J-1 disconnects, and the appliance cut-off therefore in power output terminal N quits work, and thus serves the object of protection.Once line voltage recovers normal, triode T ends again, and its collector potential raises, and trigger again controllable silicon G conducting, relay J obtains electric work and after time delay certain hour, its closing of contact electrical equipment obtains electric working on.
In the utility model, potentiometer W is for adjusting the height of setup control voltage, to adapt to various voltage occasion.
The utility model is reasonable in design, structure is simple, do that interference is strong, reliable in action, cost are low, power supply applicability is strong.Once voltage exceedes allowed band get final product auto-breaking, voltage resume normally can be connected again automatically, plays a protective role to household electrical appliances.
Claims (4)
1. electrical network lightning protection over-voltage automatic power-off control device, it is characterized in that: by power input terminal, power output terminal, transformer, diode, voltage stabilizing didoe, electric capacity, resistance, potentiometer, triode, controllable silicon and relay composition, one end of described power input terminal and 1 pin of transformer, one end of relay and one end of relay normally open contact are connected, the other end of relay normally open contact is connected with one end of power output terminal, 2 pin of described transformer are connected with the positive pole of diode, the negative pole of diode and the positive pole of electric capacity, one quiet end of potentiometer and one end of resistance are connected, the other end of resistance controls pole with the collector electrode of triode and silicon controlled and is connected, the moved end of potentiometer is connected with the negative pole of voltage stabilizing didoe, the positive pole of voltage stabilizing didoe is connected with the base stage of triode, silicon controlled anode is connected with the other end of relay, 3 pin of the other end of described power input terminal and the other end of power output terminal, transformer, the negative pole of electric capacity, another quiet end of potentiometer, the emitter of triode and silicon controlled negative electrode are connected.
2. electrical network lightning protection over-voltage automatic power-off control device according to claim 1, it is characterized in that: described transformer is autotransformer, the voltage between its 1-2 pin is set to 400V, and the voltage between 2-3 pin is set to 20V.
3. electrical network lightning protection over-voltage automatic power-off control device according to claim 1, is characterized in that: described relay is the time relay connected after contact obtains electric time delay.
4. electrical network lightning protection over-voltage automatic power-off control device according to claim 1, is characterized in that: the model of described diode is 1N4007; The model of described voltage stabilizing didoe is 2CW12; The capacity of described electric capacity is 100 μ F; The resistance of described resistance is 5.1k ohm; Described potentiometer is the multiturn potentiometer of resistance 100k ohm; The model of described triode is 8050; Described controllable silicon is bidirectional triode thyristor, and its rated current is greater than 1A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520213568.1U CN204517363U (en) | 2015-04-10 | 2015-04-10 | Electrical network lightning protection over-voltage automatic power-off control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520213568.1U CN204517363U (en) | 2015-04-10 | 2015-04-10 | Electrical network lightning protection over-voltage automatic power-off control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204517363U true CN204517363U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520213568.1U Expired - Fee Related CN204517363U (en) | 2015-04-10 | 2015-04-10 | Electrical network lightning protection over-voltage automatic power-off control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204517363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446712A (en) * | 2022-04-08 | 2022-05-06 | 深圳市恒讯通电子有限公司 | Adjustable steady voltage auto-power-off relay |
-
2015
- 2015-04-10 CN CN201520213568.1U patent/CN204517363U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446712A (en) * | 2022-04-08 | 2022-05-06 | 深圳市恒讯通电子有限公司 | Adjustable steady voltage auto-power-off relay |
| CN114446712B (en) * | 2022-04-08 | 2022-07-22 | 深圳市恒讯通电子有限公司 | Adjustable steady voltage auto-power-off relay |
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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: 20150729 Termination date: 20160410 |