CN203761015U - Electricity utilization protection circuit for students' dormitory - Google Patents
Electricity utilization protection circuit for students' dormitory Download PDFInfo
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- CN203761015U CN203761015U CN201420181847.XU CN201420181847U CN203761015U CN 203761015 U CN203761015 U CN 203761015U CN 201420181847 U CN201420181847 U CN 201420181847U CN 203761015 U CN203761015 U CN 203761015U
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Abstract
The utility model discloses an electricity utilization protection circuit for a students' dormitory. The electricity utilization protection circuit comprises a power source (1), an over charge and short circuit detection circuit (2), an electric leakage detection circuit (3), a processing circuit (4), an overvoltage and undervoltage circuit (5) and a socket (6). The power source (1) provides electric signals for the over charge and short circuit detection circuit (2), the electric leakage detection circuit (3), the processing circuit (4) and the overvoltage and undervoltage circuit (5); the over charge and short circuit detection circuit (2) detects over charge or short circuit conditions of a 220V alternating-current load and transmits detection results to the processing circuit (4) after rectification and filtering; the electric leakage detection circuit (3) detects electric leakage or electric shock conditions of a 220V alternating-current circuit, detects residual operating current by the aid of a mutual inductor, processes detected signals and sends the processed signals to the processing circuit (4); the processing circuit (4) receives over charge signals, short circuit signals or electric leakage signals, locks the received signals and triggers a relay to act so as to disconnect the 220V alternating-current circuit; the overvoltage and undervoltage circuit (5) is used for disconnecting the 220V alternating-current circuit when an output voltage is lower than 180V or higher than 260V and an indicator lamp is light; the socket (6) is a bridge allowing the power source and the load to be connected, outputs 220V alternating current and has functions of over charge, short circuit, electric leakage, overvoltage and undervoltage protection.. Using the electricity utilization protection circuit can prevent overload operation of lines to avoid over charge of the lines, electric leakage and electric shock conditions can be detected timely and the lines can be disconnected automatically to guarantee that the load is in operation under a normal voltage.
Description
Technical field
The utility model relates to electricity protection circuit, refers more particularly to a kind of protective device of protection student at school life safety in the time of apartment electricity.
Background technology
If use in a large number the high-power electric appliance such as immersion heater, electric furnace in students' dormitory, can cause circuit excess load, cause power supply overload, make easily aging and initiation fire of circuit.Therefore, a kind of energy overload prevention is badly in need of in school, can protect again the protective device of student's life safety.
Summary of the invention
The utility model is intended to solve the deficiencies in the prior art, and a kind of students' dormitory electricity protection circuit is provided.
Described students' dormitory electricity protection circuit, comprises power supply, overload and short-circuit detecting circuit, electric-leakage detection circuit, treatment circuit, overvoltage and under-voltage circuit, socket;
Described power supply provides power supply signal for described circuit;
Described overload and short-circuit detecting circuit are in the time of load overload in the alternating current circuit of 220V or short circuit, detect overload or short-circuit signal by instrument transformer, and are transferred to treatment circuit after amplifying;
Described electric-leakage detection circuit is in the time that circuit generation electric leakage accident or people get an electric shock, and utilizes instrument transformer to detect residual action current, and gives treatment circuit after the signal detecting is processed;
Described treatment circuit is while receiving overload signal or short-circuit signal or electric leakage signal, after treated processing of circuit, and trigger relay action, the alternating current circuit of 220V disconnects;
Described overvoltage and under-voltage circuit are that indicator light is bright, and cuts off the alternating current circuit of 220V when output voltage is during lower than 180V or higher than 260V;
Described socket be to load provide there is overload, the ac signal of the 220V of short circuit, electric leakage, overvoltage, under-voltage protection;
Described power supply comprises dropping resistor, decompression capacitor, bridge heap, the first electric capacity, pressurizer, the second electric capacity;
Described dropping resistor one termination fuse and decompression capacitor, the end that exchanges of another termination decompression capacitor and bridge heap;
The output of described pressurizer provides 9V voltage and connects the second electric capacity, and DC terminal and first electric capacity of another termination bridge heap, also have one end ground connection;
Described overload and short-circuit detecting circuit comprise the first instrument transformer, the first diode, the 3rd electric capacity, the first resistance, the 4th electric capacity, the first potentiometer, the second resistance, voltage-stabiliser tube;
The live wire of the primary side serial connection alternating current 220V of described the first instrument transformer, the anode of secondary side one termination the first diode, another termination the 3rd electric capacity, the 4th electric capacity and the second resistance, and ground connection;
Described the first resistance connects negative electrode and the 3rd electric capacity of the first diode, another termination the 4th electric capacity and the first potentiometer;
Described voltage-stabiliser tube one termination the first potentiometer and the second resistance, the base stage of another termination the first triode;
Described electric-leakage detection circuit comprises the second instrument transformer, the 5th electric capacity, the second diode, the 3rd diode, the 6th electric capacity and the 3rd resistance;
There are Same Name of Ends and two coils of end of oppisite phase in the former limit of described the second instrument transformer, one end of Same Name of Ends is serially connected on live wire, a termination first former limit of instrument transformer, the first anode of another termination thyristor, one end of end of oppisite phase is serially connected on zero line, the normally-closed contact of another relay termination; Secondary termination of the same name the 5th electric capacity of the second instrument transformer and the anode of the second diode, anode, the 6th electric capacity and the 3rd resistance of another termination the 5th electric capacity, the 3rd diode, and ground connection;
The negative electrode of described the second diode connects the base stage of anode, the 6th electric capacity, the 3rd resistance and first triode of the 3rd diode;
Described treatment circuit comprises 555 integrated circuits, the first triode, the 4th resistance, the 5th resistance, the 7th electric capacity, the 8th electric capacity, the 6th resistance, the first light-emitting diode, relay, the 4th diode;
The base stage of described the first triode connects the negative electrode of voltage-stabiliser tube and the second diode, and collector electrode connects 2 pin of the 4th resistance and 555 integrated circuits, and emitter connects the 3rd resistance, and ground connection;
8 pin and 4 pin of described 555 integrated circuits meet power supply VCC, and 6 pin are connected with 7 pin, and connect the 5th resistance and the 7th electric capacity, and 5 pin are by the 8th electric capacity and 1 pin ground connection, and 3 pin outputs, are connected with the 6th resistance, relay and the negative electrode of the 4th diode;
One termination the 6th resistance of described the first luminous tube, the anode of another relay termination and the 4th diode;
Described overvoltage and under-voltage circuit comprise bidirectional thyristor, the 7th resistance, the 8th resistance, the second potentiometer, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the first comparator, the second comparator, the 13 resistance, the 14 resistance, the second light-emitting diode, the 3rd light-emitting diode, the 5th diode, the 6th diode, the 15 resistance, the 16 resistance, the 17 resistance, the second triode, the 3rd triode;
Described bidirectional thyristor one termination the second instrument transformer, another relay termination normally-closed contact, triggers termination the 7th resistance;
One termination the 8th resistance of described the second potentiometer, another termination the 9th resistance, regulates the anode of termination the first comparator and the negative terminal of the second comparator; Another termination VDD of the 8th resistance, another termination the 12 resistance of the 9th resistance, and ground connection;
One termination the tenth resistance of described the 11 resistance and the negative terminal of the first comparator, the anode of another termination the 12 resistance and the second comparator; Another termination VCC power supply of the tenth resistance;
The anode of described the 5th diode connects output, the 13 resistance of the first comparator, the negative terminal of another termination the 15 resistance and the 6th diode, output and the 14 resistance of positive termination second comparator of the 6th diode;
The anode of described the 3rd light-emitting diode connects the 14 resistance, the negative electrode of another termination the second light-emitting diode, and ground connection;
The base stage of described the second triode connects the 15 resistance, the 16 resistance, and collector electrode connects the base stage of the 17 resistance and the 3rd triode, grounded emitter;
The collector electrode of described the 3rd triode meets power supply VCC by upper connecting resistance, and emitter connects the 7th resistance;
As students' dormitory of the present utility model electricity protection circuit; utilize instrument transformer to detect overload and the short-circuit signal on 220V alternating current; utilize residual action current on instrument transformer detection line to prevent the generation of electric leakage electric shock accident; by overvoltage and the under-voltage signal of bidirectional thyristor control power supply, proof load is normally worked.Adopt the utility model, prevent circuit overload operation, protection circuit nonoverload, finds electric leakage electric shock phenomenon line disconnection automatically in time, and proof load is worked under normal voltage.
Brief description of the drawings
Fig. 1 is the structural representation of students' dormitory of the present utility model electricity protection circuit.
Fig. 2 is the circuit diagram of the students' dormitory electricity protection circuit of the utility model Fig. 1.
Fig. 3 is the circuit diagram that utilizes the students' dormitory electricity protection circuit of the utility model exploitation.
Embodiment
Below in conjunction with accompanying drawing, the utility model content is further illustrated.
As shown in Figure 1, be the structure chart of the utility model students' dormitory electricity protection circuit, comprise power supply 1, overload and short-circuit detecting circuit 2, electric-leakage detection circuit 3, treatment circuit 4, overvoltage and under-voltage circuit 5, socket 6;
Described power supply 1 provides power supply signal for socket and other circuit;
Described overload and short-circuit detecting circuit 2 are to detect whether load overloads or the situation of load short circuits, and give treatment circuit 4 the result detecting and process;
While there is electric leakage or electric shock situation on described electric-leakage detection circuit 3 detection lines, line disconnection in time;
Described treatment circuit 4 receives the signal of overload and short-circuit detecting circuit 2 and electric-leakage detection circuit 3, and indicator light and relay are processed and connected to signal, cuts off 220V alternating current circuit;
Whether described overvoltage and under-voltage circuit 5 are to detect 220V alternating current circuit to be operated within the scope of 220 ± 15% normal voltage, cut off 220V alternating current circuit as gone beyond the scope.
Described socket 6 be to load provide there is overload, the alternating current of the 220V of short circuit, electric leakage, overvoltage, under-voltage protection;
As shown in Figure 2, be the circuit diagram of the students' dormitory electricity protection circuit of the utility model Fig. 1.
Described power supply comprises dropping resistor 11, decompression capacitor 12, bridge heap 13, electric capacity 14, pressurizer 15, electric capacity 16;
Described decompression capacitor 12 1 termination fuses and dropping resistor 11, the end that exchanges of another termination dropping resistor 11 and bridge heap 13; ;
The output of described pressurizer 15 provides 9V voltage and connects electric capacity 16, and DC terminal and the electric capacity 14 of another termination bridge heap 13, also have one end ground connection;
Described overload and short-circuit detecting circuit 2 comprise instrument transformer 21, diode 22, electric capacity 23, resistance 24, electric capacity 25, potentiometer 26, voltage-stabiliser tube 27, resistance 28;
The live wire of the primary side serial connection alternating current 220V of described instrument transformer 21, the anode of secondary side one terminating diode 22, another termination capacitor 23, electric capacity 24 and resistance 28, and ground connection;
Described resistance 24 connects negative electrode and the electric capacity 23 of diode 22, another termination capacitor 25 and potentiometer 26;
Described voltage-stabiliser tube 27 1 termination potentiometers 26 and resistance 28, the base stage of other end triode 42;
Described electric-leakage detection circuit 3 comprises instrument transformer 31, electric capacity 32, diode 33, diode 34, electric capacity 35 and resistance 36;
There are Same Name of Ends and two coils of end of oppisite phase in the former limit of described instrument transformer 31, one end of Same Name of Ends is serially connected on live wire, a former limit of termination instrument transformer 21, the first anode of another termination thyristor 51, one end of end of oppisite phase is serially connected on zero line, the normally-closed contact of another relay termination 48; The secondary termination capacitor 32 of the same name of instrument transformer 31 and the anode of diode 33, anode, electric capacity 35 and the resistance 36 of another termination capacitor 35, diode 34, and ground connection;
The negative electrode of described diode 33 connects the base stage of anode, electric capacity 35, resistance 36 and the triode 42 of diode 34;
Described treatment circuit comprises 555 integrated circuits 40, triode 42, resistance 41, resistance 42, electric capacity 44, electric capacity 45 resistance 46, light-emitting diode 47, relay 48, diode 49;
The base stage of described triode 42 connects the negative electrode of voltage-stabiliser tube 27 and diode 33,2 pin of collector electrode connecting resistance 41 and 555 integrated circuits 30, emitter connecting resistance 28, and ground connection;
8 pin and 4 pin of described 555 integrated circuits meet power supply VCC, and 6 pin are connected with 7 pin, and connecting resistance 42 and electric capacity 43,5 pin are by electric capacity 45 and 1 pin ground connection, and 3 pin outputs, are connected with resistance 46, relay 48 and the negative electrode of diode 49;
One terminating resistor 46 of described luminous tube 47, the anode of another relay termination 48 and diode 49;
Described overvoltage and under-voltage circuit 5 comprise bidirectional thyristor 51, resistance 52, resistance 53, potentiometer 54, resistance 55, resistance 56, resistance 57, resistance 58, comparator 59, comparator 510, resistance 512, resistance 514, light-emitting diode 513, light-emitting diode 515, diode 511, diode 516, resistance 517, resistance 518, resistance 519, triode 520, triode 521, resistance 522;
Described bidirectional thyristor 51 1 termination instrument transformers 31, another relay termination 48 normally-closed contacts, trigger end connecting resistance 52;
One terminating resistor 53 of described potentiometer 54, other end connecting resistance 55, regulates the anode of termination comparator 59 and the negative terminal of comparator 510; Another termination VDD of resistance 53, the other end connecting resistance 58 of resistance 55, and ground connection;
One terminating resistor 56 of described resistance 57 and the negative terminal of comparator 59, the anode of other end connecting resistance 58 and comparator 510; Another termination VCC power supply of resistance 56;
The anode of described diode 511 connects output, the resistance 512 of comparator 59, the negative terminal of other end connecting resistance 517 and diode 516, the output of the positive termination comparator 510 of diode 516 and resistance 514;
The anode connecting resistance 512 of described light-emitting diode 513, the negative electrode of other end sending and receiving optical diode 515, and ground connection;
The base stage connecting resistance 517 of described triode 520, resistance 518, the base stage of collector electrode connecting resistance 519 and triode 521, grounded emitter;
The collector electrode of described triode 521 meets power supply VCC by resistance 522, emitter connecting resistance 52;
The guard method of load overload or short circuit, comprises the steps:
Described load overload is to arrange by potentiometer 26 with the ability to bear of circuit under the school regulations, students' dormitory allows power consumption equipment generally to have computer, electric fan, some school also can use hair dryer, but does not allow with immersion heater, and the power consumption of computer is generally 300W, fan 70W, hair dryer 500W, immersion heater needs 800W, therefore in overload, association's dormitory power consumption is set in 600W, and the load in 600W belongs to normal duty.
It is described in the time that load exceedes 600W or short circuit, the original edge voltage of instrument transformer 21 raises, and also raises by voltage after rectifying and wave-filtering, and voltage-stabiliser tube 27 is reversed and punctures, triode 42 conductings, give pulse signal of 555 integrated circuit, utilize the monostable mode of operation of 555 integrated circuits, making output 3 pin is high level, red led is bright, relay 48 adhesives, relay 48 normally-closed contacts that are connected on main circuit disconnect, and cut off circuit; After the load of overload is pulled out, utilize 555 circuit by resistance 43, electric capacity 44 to be charged, when voltage exceedes 2/3 when above of power supply VCC, circuit automatic turning, 3 pin outputs are low level, relay 48 disconnects, circuit recovery normal power supply; In the time that bearing power is normal, the voltage on instrument transformer 21 former limits is lower, and voltage-stabiliser tube 27 is not breakdown, triode 42 not conductings, and 555 ic output 3 pin are low level.
Electric leakage or the guard method of getting an electric shock, comprise the steps:
When described circuit is normally worked, two coils on the former limit of instrument transformer produce the electric current of equal and opposite in directions, opposite direction, thereby the voltage that instrument transformer secondary induces is zero, and relay is not worked, and circuit is normal; In the time of human electric shock or line electrical leakage, two coils on the former limit of instrument transformer produce big or small unequal electric currents, thereby instrument transformer secondary induces the voltage signal of an alternation, after diode 33 and diode 34 rectifications, through electric capacity 32,35 filtering, make triode 48 conductings, 2 pin of 555 integrated circuits are received pulse signal, and making output 3 pin is high level, red led is bright, relay 48 adhesives, relay 48 normally-closed contacts that are connected on main circuit disconnect, and cut off circuit; Ensure life safety.
The guard method of under-voltage or overvoltage, comprises the steps:
According to the rules, voltage allows 15% deviation, be that this circuit is set as lower than 180V be under-voltage, be overvoltage higher than 260V, civil power is by after resistance capacitance step-down, after bridge heap rectification and capacitor filtering, obtain vdd voltage, VDD, after pressurizer voltage stabilizing, obtains VCC voltage, as the accessory power supply of circuit;
Described under-voltage and overvoltage is to carry out dividing potential drop by 56,57,58 couples of power supply VCC of resistance, the voltage of getting on resistance 58 is under-voltage set point, and the voltage of getting on resistance 57 and 58 is overvoltage set point, VDD is through resistance 53,54,55 dividing potential drops, by the adjustment to resistance and potentiometer, make output actual measurement magnitude of voltage in potentiometer center plug, in the time that measured value is less than under-voltage value, comparator 510 is exported high level, makes luminous tube 515 yellow indicator lamps bright, thyristor Triggerless, cuts off circuit; In the time that measured value is greater than overpressure value, comparator 59 is exported high level, makes luminous tube 513 white indicating lights bright, and thyristor Triggerless cuts off circuit;
As shown in Figure 3, for utilizing the circuit diagram of students' dormitory electricity protection circuit of the utility model exploitation.
The utility model discloses a kind of students' dormitory electricity protection circuit, and describe embodiment of the present utility model and effect with reference to the accompanying drawings.Should be understood that: above-described embodiment is just to explanation of the present utility model, instead of to restriction of the present utility model, any utility model not exceeding within the scope of the utility model connotation is created, within all falling into the utility model protection range.
Claims (5)
1. students' dormitory electricity protection circuit, is characterized in that comprising power supply, overload and short-circuit detecting circuit, electric-leakage detection circuit, treatment circuit, overvoltage and under-voltage circuit, socket:
Described power supply provides the signal of telecommunication for load, overload and short-circuit detecting circuit, electric-leakage detection circuit, treatment circuit, overvoltage and under-voltage circuit;
Described overload and short-circuit detecting circuit are in the time of load overload in the alternating current circuit of 220V or short circuit, detect overload or short-circuit signal by instrument transformer, and are transferred to treatment circuit after amplifying;
Described electric-leakage detection circuit is in the time that circuit generation electric leakage accident or people get an electric shock, and utilizes instrument transformer to detect residual action current, and gives treatment circuit after the signal detecting is processed;
Described treatment circuit is while receiving overload signal or short-circuit signal or electric leakage signal, after treated processing of circuit, and trigger relay action, the alternating current circuit of 220V disconnects;
Described overvoltage and under-voltage circuit are that indicator light is bright, and cuts off the alternating current circuit of 220V when output voltage is during lower than 180V or higher than 260V;
Described socket is the bridge that power supply is connected with load, and the alternating current 220V of its output has the function of overload, short circuit, electric leakage, overvoltage, under-voltage protection.
2. students' dormitory as claimed in claim 1 electricity protection circuit, is characterized in that described power supply comprises dropping resistor, decompression capacitor, bridge heap, the first electric capacity, pressurizer, the second electric capacity;
Described dropping resistor one termination fuse and decompression capacitor, the end that exchanges of another termination decompression capacitor and bridge heap;
The output of described pressurizer provides 9V voltage and connects the second electric capacity, and DC terminal and first electric capacity of another termination bridge heap, also have one end ground connection;
Described overload and short-circuit detecting circuit comprise the first instrument transformer, the first diode, the 3rd electric capacity, the first resistance, the 4th electric capacity, the first potentiometer, the second resistance, voltage-stabiliser tube;
The live wire of the primary side serial connection alternating current 220V of described the first instrument transformer, the anode of secondary side one termination the first diode, another termination the 3rd electric capacity, the 4th electric capacity and the second resistance, and ground connection;
Described the first resistance connects negative electrode and the 3rd electric capacity of the first diode, another termination the 4th electric capacity and the first potentiometer;
Described voltage-stabiliser tube one termination the first potentiometer and the second resistance, the base stage of another termination the first triode.
3. students' dormitory as claimed in claim 1 electricity protection circuit, is characterized in that described electric-leakage detection circuit comprises the second instrument transformer, the 5th electric capacity, the second diode, the 3rd diode, the 6th electric capacity and the 3rd resistance;
There are Same Name of Ends and two coils of end of oppisite phase in the former limit of described the second instrument transformer, one end of Same Name of Ends is serially connected on live wire, a termination first former limit of instrument transformer, the first anode of another termination thyristor, one end of end of oppisite phase is serially connected on zero line, the normally-closed contact of another relay termination; Secondary termination of the same name the 5th electric capacity of the second instrument transformer and the anode of the second diode, anode, the 6th electric capacity and the 3rd resistance of another termination the 5th electric capacity, the 3rd diode, and ground connection;
The negative electrode of described the second diode connects the base stage of anode, the 6th electric capacity, the 3rd resistance and first triode of the 3rd diode.
4. students' dormitory as claimed in claim 1 electricity protection circuit, is characterized in that described treatment circuit comprises 555 integrated circuits, the first triode, the 4th resistance, the 5th resistance, the 7th electric capacity, the 8th electric capacity, the 6th resistance, the first light-emitting diode, relay, the 4th diode;
The base stage of described the first triode connects the negative electrode of voltage-stabiliser tube and the second diode, and collector electrode connects 2 pin of the 4th resistance and 555 integrated circuits, and emitter connects the 3rd resistance, and ground connection;
8 pin and 4 pin of described 555 integrated circuits meet power supply VCC, and 6 pin are connected with 7 pin, and connect the 5th resistance and the 7th electric capacity, and 5 pin are by the 8th electric capacity and 1 pin ground connection, and 3 pin outputs, are connected with the 6th resistance, relay and the negative electrode of the 4th diode;
One termination the 6th resistance of described the first luminous tube, the anode of another relay termination and the 4th diode.
5. students' dormitory as claimed in claim 1 electricity protection circuit, is characterized in that described overvoltage and under-voltage circuit comprise bidirectional thyristor, the 7th resistance, the 8th resistance, the second potentiometer, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the first comparator, the second comparator, the 13 resistance, the 14 resistance, the second light-emitting diode, the 3rd light-emitting diode, the 5th diode, the 6th diode, the 15 resistance, the 16 resistance, the 17 resistance, the second triode, the 3rd triode;
Described bidirectional thyristor one termination the second instrument transformer, another relay termination normally-closed contact, triggers termination the 7th resistance;
One termination the 8th resistance of described the second potentiometer, another termination the 9th resistance, regulates the anode of termination the first comparator and the negative terminal of the second comparator; Another termination VDD of the 8th resistance, another termination the 12 resistance of the 9th resistance, and ground connection;
One termination the tenth resistance of described the 11 resistance and the negative terminal of the first comparator, the anode of another termination the 12 resistance and the second comparator; Another termination VCC power supply of the tenth resistance;
The anode of described the 5th diode connects output, the 13 resistance of the first comparator, the negative terminal of another termination the 15 resistance and the 6th diode, output and the 14 resistance of positive termination second comparator of the 6th diode;
The anode of described the 3rd light-emitting diode connects the 14 resistance, the negative electrode of another termination the second light-emitting diode, and ground connection;
The base stage of described the second triode connects the 15 resistance, the 16 resistance, and collector electrode connects the base stage of the 17 resistance and the 3rd triode, grounded emitter;
The collector electrode of described the 3rd triode meets power supply VCC by upper connecting resistance, and emitter connects the 7th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181847.XU CN203761015U (en) | 2014-04-11 | 2014-04-11 | Electricity utilization protection circuit for students' dormitory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181847.XU CN203761015U (en) | 2014-04-11 | 2014-04-11 | Electricity utilization protection circuit for students' dormitory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761015U true CN203761015U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181847.XU Expired - Fee Related CN203761015U (en) | 2014-04-11 | 2014-04-11 | Electricity utilization protection circuit for students' dormitory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203761015U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990816A (en) * | 2015-02-05 | 2016-10-05 | 刘圣平 | Safer electric leakage protector |
| CN106849003A (en) * | 2017-03-06 | 2017-06-13 | 合肥智慧龙图腾知识产权股份有限公司 | A kind of AC network safety electricity consumption protector |
| CN107041050A (en) * | 2017-04-11 | 2017-08-11 | 长兴肖达科技有限公司 | The power circuit of neon light |
| CN111009875A (en) * | 2019-12-21 | 2020-04-14 | 文红军 | Safe power control system |
| CN111934298A (en) * | 2020-07-16 | 2020-11-13 | 深圳市雷蓝电气科技有限公司 | Electric shock protection device |
| CN113917224A (en) * | 2021-11-10 | 2022-01-11 | 珠海格力电器股份有限公司 | Overvoltage detection circuit and method |
| CN114200197A (en) * | 2021-12-29 | 2022-03-18 | 广州市万保职业安全事务有限公司 | Safety management circuit of gas station |
| CN114520495A (en) * | 2022-03-07 | 2022-05-20 | 李连海 | Equipment power protection device |
-
2014
- 2014-04-11 CN CN201420181847.XU patent/CN203761015U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990816A (en) * | 2015-02-05 | 2016-10-05 | 刘圣平 | Safer electric leakage protector |
| CN105990816B (en) * | 2015-02-05 | 2019-02-15 | 刘圣平 | A kind of safer earth leakage protective device |
| CN106849003A (en) * | 2017-03-06 | 2017-06-13 | 合肥智慧龙图腾知识产权股份有限公司 | A kind of AC network safety electricity consumption protector |
| CN107041050A (en) * | 2017-04-11 | 2017-08-11 | 长兴肖达科技有限公司 | The power circuit of neon light |
| CN111009875A (en) * | 2019-12-21 | 2020-04-14 | 文红军 | Safe power control system |
| CN111934298A (en) * | 2020-07-16 | 2020-11-13 | 深圳市雷蓝电气科技有限公司 | Electric shock protection device |
| CN113917224A (en) * | 2021-11-10 | 2022-01-11 | 珠海格力电器股份有限公司 | Overvoltage detection circuit and method |
| CN114200197A (en) * | 2021-12-29 | 2022-03-18 | 广州市万保职业安全事务有限公司 | Safety management circuit of gas station |
| CN114520495A (en) * | 2022-03-07 | 2022-05-20 | 李连海 | Equipment power protection device |
| CN114520495B (en) * | 2022-03-07 | 2023-10-20 | 国网新疆电力有限公司奎屯供电公司 | Equipment electricity protection device |
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