CN204167866U - The two-way out-of-limit detection protective circuit of line voltage - Google Patents
The two-way out-of-limit detection protective circuit of line voltage Download PDFInfo
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- CN204167866U CN204167866U CN201420612733.6U CN201420612733U CN204167866U CN 204167866 U CN204167866 U CN 204167866U CN 201420612733 U CN201420612733 U CN 201420612733U CN 204167866 U CN204167866 U CN 204167866U
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Abstract
The utility model discloses the two-way out-of-limit detection protective circuit of a kind of line voltage; comprise relay; the normally closed switch J of relay and load in series; the coil P of relay and triode T forms protective circuit after connecting; the two ends of protective circuit connect live wire and the zero line of civil power respectively, are also provided with a testing circuit between the base stage of civil power live wire and triode T.The beneficial effects of the utility model are: when overvoltage and under voltage appear in line voltage, report to the police, and cut off load power source, protection load.
Description
Technical field
The utility model relates to voltage detecting field, particularly relates to the two-way out-of-limit detection protective circuit of a kind of line voltage.
Background technology
In existing a lot of community, enterprise, or often occur the phenomenon of line voltage shakiness, often cause electrical equipment to occur damaging, cause very large loss, this is also the thing of power supply department headache.
Utility model content
Namely the purpose of this utility model is the deficiency overcoming present technology, provides a kind of line voltage two-way out-of-limit detection protective circuit, solves existing line voltage unstable, causes load to occur the problem damaged.
The utility model is achieved through the following technical solutions: the two-way out-of-limit detection protective circuit of line voltage, comprise relay, the normally closed switch J of relay and load in series, the coil P of relay and triode T forms protective circuit after connecting, the two ends of protective circuit connect live wire and the zero line of civil power respectively, also be provided with first Circuit tuning between civil power live wire and protective circuit, the first Circuit tuning comprises decompression capacitor C3 and rectifier diode D6;
A testing circuit is also provided with between the base stage of civil power live wire and triode T, the second Circuit tuning is provided with between testing circuit and civil power live wire, second Circuit tuning comprises commutation capacitor D1 and dropping resistor R1, and testing circuit comprised pressure testing circuit in parallel and undervoltage detection circuit;
Over-voltage detection circuit comprises the first inverter M1, the second inverter M2 and the first photodiode DA, the negative pole of the first inverter M1 connects the positive pole of the second inverter M2, the negative pole of the second inverter connects the base stage of triode T through diode D2, the positive pole of the first inverter connects the second Circuit tuning through rheostat RP1, the positive pole of the first photodiode DA is connected to the output of the first Circuit tuning, and negative pole is connected to the junction of the first inverter M1, the second inverter M2;
Undervoltage detection circuit comprises the 3rd inverter M3 and the second photodiode DB, the positive pole of the 3rd described inverter M3 connects the second Circuit tuning through rheostat RP2, its negative pole connects the base stage of triode T through diode D3, second light-emitting diode DB positive pole connects the negative pole of the 3rd inverter M3, its minus earth.
In this device, civil power is a point two-way, one tunnel is to the first Circuit tuning, another road is to the second Circuit tuning, the first via is through C3 step-down, D6 rectification, export a low-voltage dc voltage, mainly output to coil P, coil P connects with triode T, coil P is wanted to be energized, namely triode T is needed to open, the base stage of triode T obtains electric rear unlatching, this mainly testing circuit control, namely another road of civil power is through D1 rectification, R1 step-down, output to testing circuit, in testing circuit, the positive terminal voltage of the first inverter and the 3rd inverter, the voltage on rheostat RP1 and rheostat RP2 respectively, when in this device, civil power is stablized, the output of the first inverter is high level, the output of the second inverter M2 is low level.And the output of the 3rd inverter M3 is low level, the cut-in voltage of main first inverter is comparatively large, and the cut-in voltage of the 3rd inverter is less, and triode turns off, and coil P is power-off, normally closed switch J normally closed, and light-emitting diode DA also ends not luminous; When overvoltage appears in civil power, the first inverter exports negative level, and the second inverter exports as high level, and the 3rd inverter exports or low level, at this moment transistor base invocation point, triode is opened, and coil P obtains electric, thus breaking normally closed switch J, light-emitting diode DA then conducting is luminous, achieves alarm; When line voltage occurs under-voltage, the first inverter exports high level, the second inverter output low level, 3rd inverter exports high level, makes again triode T base stage obtain electric, thus makes coil P conducting, switching off load, at this moment light-emitting diode DB conducting is luminous, achieves alarm.
Further, the first above-mentioned Circuit tuning also comprises filter circuit and electric capacity of voltage regulation DW, filter circuit comprises electric capacity C2 and diode D7, filter circuit is exactly the residual waves AC of filtering, ensure to export direct current, electric capacity of voltage regulation DW major stable voltage, excessive so as not to light-emitting diode DA positive pole place voltage, make light-emitting diode DA luminous.
Further, the second above-mentioned Circuit tuning also comprises filter capacitor C1, the waves AC that filtering is residual.
The beneficial effects of the utility model are: when overvoltage and under voltage appear in line voltage, report to the police, and cut off load power source, protection load.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following examples:
[embodiment]
As shown in Figure 1, the two-way out-of-limit detection protective circuit of line voltage, comprise relay, the normally closed switch J of relay connects with load G, the coil P of relay and triode T forms protective circuit after connecting, the two ends of protective circuit connect live wire and the zero line of civil power respectively, are also provided with first Circuit tuning between civil power live wire and protective circuit, and the first Circuit tuning comprises decompression capacitor C3 and rectifier diode D6;
A testing circuit is also provided with between the base stage of civil power live wire and triode T, the second Circuit tuning is provided with between testing circuit and civil power live wire, second Circuit tuning comprises commutation capacitor D1 and dropping resistor R1, and testing circuit comprised pressure testing circuit in parallel and undervoltage detection circuit;
Over-voltage detection circuit comprises the first inverter M1, the second inverter M2 and the first photodiode DA, the negative pole of the first inverter M1 connects the positive pole of the second inverter M2, the negative pole of the second inverter connects the base stage of triode T through diode D2, the positive pole of the first inverter connects the second Circuit tuning through rheostat RP1, the positive pole of the first photodiode DA is connected to the output of the first Circuit tuning, and negative pole is connected to the junction of the first inverter M1, the second inverter M2;
Undervoltage detection circuit comprises the 3rd inverter M3 and the second photodiode DB, the positive pole of the 3rd described inverter M3 connects the second Circuit tuning through rheostat RP2, its negative pole connects the base stage of triode T through diode D3, second light-emitting diode DB positive pole connects the negative pole of the 3rd inverter M3, its minus earth.
In this device, civil power is a point two-way, one tunnel is to the first Circuit tuning, another road is to the second Circuit tuning, the first via is through C3 step-down, D6 rectification, export a low-voltage dc voltage, mainly output to coil P, coil P connects with triode T, coil P is wanted to be energized, namely triode T is needed to open, the base stage of triode T obtains electric rear unlatching, this mainly testing circuit control, namely another road of civil power is through D1 rectification, R1 step-down, output to testing circuit, in testing circuit, the positive terminal voltage of the first inverter and the 3rd inverter, the voltage on rheostat RP1 and rheostat RP2 respectively, the voltage of a generation 10.5V on rheostat RP1 and rheostat RP2 in the present embodiment, when in this device, civil power is stablized, the output of the first inverter is high level, the output of the second inverter M2 is low level.And the output of the 3rd inverter M3 is low level, the cut-in voltage of main first inverter is larger, be greater than 10.5V, the cut-in voltage of the second inverter M2 and the 3rd inverter is less, lower than 10.5V, triode turns off, and coil P is power-off, normally closed switch J normally closed, light-emitting diode DA also ends not luminous; When overvoltage appears in civil power, the first inverter exports negative level, and the second inverter exports as high level, and the 3rd inverter exports or low level, at this moment transistor base invocation point, triode is opened, and coil P obtains electric, thus breaking normally closed switch J, light-emitting diode DA then conducting is luminous, achieves alarm; When line voltage occurs under-voltage, the first inverter exports high level, the second inverter output low level, 3rd inverter exports high level, makes again triode T base stage obtain electric, thus makes coil P conducting, switching off load, at this moment light-emitting diode DB conducting is luminous, achieves alarm.
The rheostat of this device needs debugging, during debugging, power with a voltage regulator, regulation voltage is normal value (220V), does load with an incandescent lamp, LED1, LED2 are all extinguished, incandescent lamp is bright, then voltage regulator is adjusted to higher limit or lower limit, adjusts RP1 or RP2 to make LED1 or LED2 just luminous, incandescent lamp extinguishes, and namely debugs successfully.
The first above-mentioned Circuit tuning also comprises filter circuit and electric capacity of voltage regulation DW, filter circuit comprises electric capacity C2 and diode D7, filter circuit is exactly the residual waves AC of filtering, ensure to export direct current, electric capacity of voltage regulation DW major stable voltage, excessive so as not to light-emitting diode DA positive pole place voltage, make light-emitting diode DA luminous.
The second above-mentioned Circuit tuning also comprises filter capacitor C1, the waves AC that filtering is residual.
Claims (3)
1. the two-way out-of-limit detection protective circuit of line voltage, it is characterized in that: comprise relay, the normally closed switch J of relay and load in series, the coil P of relay and triode T forms protective circuit after connecting, the two ends of protective circuit connect live wire and the zero line of civil power respectively, also be provided with first Circuit tuning between civil power live wire and protective circuit, the first Circuit tuning comprises decompression capacitor C3 and rectifier diode D6;
A testing circuit is also provided with between the base stage of civil power live wire and triode T, the second Circuit tuning is provided with between testing circuit and civil power live wire, second Circuit tuning comprises commutation capacitor D1 and dropping resistor R1, and testing circuit comprised pressure testing circuit in parallel and undervoltage detection circuit;
Over-voltage detection circuit comprises the first inverter M1, the second inverter M2 and the first photodiode DA, the negative pole of the first inverter M1 connects the positive pole of the second inverter M2, the negative pole of the second inverter connects the base stage of triode T through diode D2, the positive pole of the first inverter connects the second Circuit tuning through rheostat RP1, the positive pole of the first photodiode DA is connected to the output of the first Circuit tuning, and negative pole is connected to the junction of the first inverter M1, the second inverter M2;
Undervoltage detection circuit comprises the 3rd inverter M3 and the second photodiode DB, the positive pole of the 3rd described inverter M3 connects the second Circuit tuning through rheostat RP2, its negative pole connects the base stage of triode T through diode D3, second light-emitting diode DB positive pole connects the negative pole of the 3rd inverter M3, its minus earth.
2. the two-way out-of-limit detection protective circuit of line voltage according to claim 1, it is characterized in that: the first described Circuit tuning also comprises filter circuit and electric capacity of voltage regulation DW, filter circuit comprises electric capacity C2 and diode D7.
3. the two-way out-of-limit detection protective circuit of line voltage according to claim 1, is characterized in that: the second described Circuit tuning also comprises filter capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612733.6U CN204167866U (en) | 2014-10-22 | 2014-10-22 | The two-way out-of-limit detection protective circuit of line voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612733.6U CN204167866U (en) | 2014-10-22 | 2014-10-22 | The two-way out-of-limit detection protective circuit of line voltage |
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| Publication Number | Publication Date |
|---|---|
| CN204167866U true CN204167866U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420612733.6U Expired - Fee Related CN204167866U (en) | 2014-10-22 | 2014-10-22 | The two-way out-of-limit detection protective circuit of line voltage |
Country Status (1)
| Country | Link |
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| CN (1) | CN204167866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283185A (en) * | 2014-10-22 | 2015-01-14 | 四川蓝讯宝迩电子科技有限公司 | Electric supply bothway out-of-limit protection circuit |
-
2014
- 2014-10-22 CN CN201420612733.6U patent/CN204167866U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283185A (en) * | 2014-10-22 | 2015-01-14 | 四川蓝讯宝迩电子科技有限公司 | Electric supply bothway out-of-limit protection 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 |
Granted publication date: 20150218 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |