CN105680251A - Over-current protection circuit for socket - Google Patents
Over-current protection circuit for socket Download PDFInfo
- Publication number
- CN105680251A CN105680251A CN201610025137.1A CN201610025137A CN105680251A CN 105680251 A CN105680251 A CN 105680251A CN 201610025137 A CN201610025137 A CN 201610025137A CN 105680251 A CN105680251 A CN 105680251A
- Authority
- CN
- China
- Prior art keywords
- unit
- socket
- current
- remote control
- control unit
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6675—Structural association with built-in electrical component with built-in electronic circuit with built-in power supply
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention provides an over-current protection circuit for a socket. The over-current protection circuit comprises a detection unit, an anti-interference unit, a control unit, a drive unit and a cut-off unit, which are electrically connected with one another, wherein the detection unit is used for detecting a current signal which flows through a remote control socket; the anti-interference unit is used for carrying out anti-interference processing on a detection result signal of the detection unit and transmitting the detection result signal subjected to anti-interference processing to the control unit; and the control unit is used for judging whether a current signal which flows through the remote control socket exceeds a preset value or not according to the detection result signal and controlling the drive unit to drive the cut-off unit to cut off the current of the remote control socket when the current signal exceeds the preset value. The remote control socket has an over-current protection function, and the circuit is simple in structure and relatively low in cost.
Description
Technical field
The present invention relates to circuit field, in particular to a kind of current foldback circuit for socket.
Background technology
Along with the development of power industry, more and more household electrical appliance enter ordinary people family, especially electronic industry development now and rapid, from lighting to refrigerator and air conditioner, arrive electric motor car, the electromagnetic oven of constantly popularization in recent years again, it suffices to say that the stability of domestic electric network is directly connected to daily life. And of the prior art have by the socket of remote pilot, scarcely there is overcurrent protection function.
Summary of the invention
Main purpose of the present invention is the defect for prior art, it is provided that a kind of current foldback circuit for socket.
The present invention provides a kind of current foldback circuit for socket, comprises the detecting unit being electrically connected successively, anti-interference unit, control unit, drives unit and cutting unit;
The electric current signal that described detecting unit flows through described remote control socket for detecting, described anti-interference unit is used for the testing result signal to described detecting unit and carries out anti-interference process and the testing result signal after carrying out anti-interference process is sent to described control unit, described control unit is used for judging whether the electric current signal flowing through remote control socket exceedes predetermined value according to described testing result signal, and cuts off the electric current of described remote control socket exceeding cutting unit described in drive unit drives described in described predetermined value control.
In the current foldback circuit for socket provided by the invention, described current detecting unit is CT current/voltage transformer or current/voltage sampling resistance.
In the current foldback circuit for socket provided by the invention, described driving unit comprises driving triode Q2 and resistance R8, described cutting unit is electromagnetism relay, relay coil one end of described electromagnetism relay is connected with voltage input end VCC, the other end of described relay coil is connected with the colelctor electrode of described driving triode Q2, the grounded emitter of described driving triode Q2, the base stage of described driving triode Q2, described resistance R8 and described control unit connect successively, the two ends of the armature of described electromagnetism relay are connected on the backbone of described remote control socket.
In the current foldback circuit for socket provided by the invention; also comprise diode D2; one end of described diode D2 is connected between described relay coil and described driving triode Q2, and the other end of described diode D2 is connected with the other end of described relay coil.
In the current foldback circuit for socket provided by the invention; also comprise the galvanic voltage transformation module for alternating current being converted to predetermined dimension; the input of described voltage transformation module is connected with electrical network, and the output of described voltage transformation module is connected with the power supply end of described control unit.
In the current foldback circuit for socket provided by the invention; described anti-interference unit comprises energy storage electric capacity C6, rectification circuit and filtering circuit; one end of described energy storage electric capacity C6, described rectification circuit, described filtering circuit and described control unit connect successively; the other end ground connection of described energy storage electric capacity C6, the two ends of described CT current/voltage transformer or current/voltage sampling resistance two ends with described energy storage electric capacity C6 are connected respectively.
In the current foldback circuit for socket provided by the invention, described rectification circuit is rectification diode D1.
In the current foldback circuit for socket provided by the invention, described filtering circuit comprises filter capacitor C7, filter capacitor C8, resistance R13 and resistance R12, described anti-interference unit also comprises resistance R11, described energy storage electric capacity C6 is connected with the positive pole of described rectification diode D1, the negative pole of described rectification diode D1 is connected with one end of described resistance R12, the other end of described resistance R12 is connected with described control unit, one end of described filter capacitor C8 is connected between described resistance R12 and described control unit, the other end ground connection of described filter capacitor C8, described resistance R13 parallel connection and described electric capacity C8 two ends, one end of described filter capacitor C7 is connected between described rectification diode D1 and described resistance R12, the other end ground connection of described filter capacitor C7, one end of described resistance R11 is connected between described energy storage electric capacity C6 and described rectification diode D1, the other end ground connection of described resistance R11.
In the current foldback circuit for socket provided by the invention; also comprise LED; described LED is connected with described control unit, and described control unit exceedes lumination of light emitting diode described in predetermined value control at the electric current signal flowing through described remote control socket.
In the current foldback circuit for socket provided by the invention, comprise the detecting unit being electrically connected successively, anti-interference unit, control unit, drive unit and cutting unit;
The electric current signal that described detecting unit flows through described remote control socket for detecting, described anti-interference unit is used for the testing result signal to described detecting unit and carries out anti-interference process and the testing result signal after carrying out anti-interference process is sent to described control unit, described control unit is used for judging whether the electric current signal flowing through remote control socket exceedes predetermined value according to described testing result signal, and cuts off the electric current of described remote control socket exceeding cutting unit described in drive unit drives described in described predetermined value control;
Described current detecting unit is CT current/voltage transformer or current/voltage sampling resistance;
Described driving unit comprises driving triode Q2 and resistance R8, described cutting unit is electromagnetism relay, relay coil one end of described electromagnetism relay is connected with voltage input end VCC, the other end of described relay coil is connected with the colelctor electrode of described driving triode Q2, the grounded emitter of described driving triode Q2, the base stage of described driving triode Q2, described resistance R8 and described control unit connect successively, and the two ends of the armature of described electromagnetism relay are connected on the backbone of described remote control socket;
Described anti-interference unit comprises energy storage electric capacity C6, rectification circuit and filtering circuit, one end of described energy storage electric capacity C6, described rectification circuit, described filtering circuit and described control unit connect successively, the other end ground connection of described energy storage electric capacity C6, the two ends of described CT current/voltage transformer or current/voltage sampling resistance two ends with described energy storage electric capacity C6 are connected respectively;
Described rectification circuit is rectification diode D1;
Described filtering circuit comprises filter capacitor C7, filter capacitor C8, resistance R13 and resistance R12, described anti-interference unit also comprises resistance R11, described energy storage electric capacity C6 is connected with the positive pole of described rectification diode D1, the negative pole of described rectification diode D1 is connected with one end of described resistance R12, the other end of described resistance R12 is connected with described control unit, one end of described filter capacitor C8 is connected between described resistance R12 and described control unit, the other end ground connection of described filter capacitor C8, described resistance R13 parallel connection and described electric capacity C8 two ends, one end of described filter capacitor C7 is connected between described rectification diode D1 and described resistance R12, the other end ground connection of described filter capacitor C7, one end of described resistance R11 is connected between described energy storage electric capacity C6 and described rectification diode D1, the other end ground connection of described resistance R11.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the theory diagram of the current foldback circuit for socket in one embodiment of the present invention;
Fig. 2 be embodiment illustrated in fig. 1 in the physical circuit figure of the current foldback circuit for socket.
Specific embodiment party formula
Fig. 1 shows a kind of current foldback circuit for socket in one embodiment of the present invention, comprises the detecting unit 400, anti-interference unit 300, control unit 200, driving unit 500 and the cutting unit 600 that are electrically connected successively. The electric current signal that this detecting unit 400 flows through remote control socket to be protected for detecting; anti-interference unit 300 is for carrying out anti-interference process to the testing result signal of described detecting unit 400 and the testing result signal after carrying out anti-interference process is sent to described control unit 200; according to described testing result signal, described control unit 200 is for judging whether the electric current signal flowing through remote control socket exceedes predetermined value, and drive unit 500 to drive described cutting unit 600 to cut off the electric current of described remote control socket described in this predetermined value control exceeding.
The present invention by detecting unit 400 detection flow through remote control socket electric current signal and when electric current exceedes predetermined value; control to drive unit 500 to drive cutting unit 600 to cut off the circuit of remote control socket by control unit 200; have and make remote control socket have overcurrent protection function; and this circuit structure is simple, and cost is lower.
Preferably, in the current foldback circuit for socket provided by the invention, described detecting unit 400 is CT current/voltage transformer or current/voltage sampling resistance, and certainly, it is not limited to this.
Specifically; as shown in Figure 2; this current foldback circuit being used for socket also comprises the galvanic voltage transformation module 100 for the alternating current flowing through this remote control socket backbone is converted to predetermined dimension; the input of described voltage transformation module 100 is connected with the key of remote control socket, and the output of described voltage transformation module 100 is connected to power to this control unit 200 with the power supply end of described control unit 200.
This control unit 20 comprises control chip and switch S W1, and the 5th pin and the 2nd pin of this control chip are connected with the two ends of switch S W1 respectively, and first pin of this control chip U2 is power supply end, and it is connected with the output of voltage transformation module 100. 6th pin of this control chip U2 is connected with anti-interference unit 300. Further; this current foldback circuit being used for socket also comprises LED; described LED is connected with described control unit 200; it is luminous that described control unit 200 exceedes LED described in predetermined value control at the electric current signal flowing through described remote control socket, thus user is reminded.
In the present embodiment, the positive pole of LED is connected with the first pin, and negative pole is connected with the 4th pin. Further, this current foldback circuit being used for socket also comprises CON4 and antenna ANT.
In the current foldback circuit for socket provided by the invention, described driving unit 500 comprises driving triode Q2 and resistance R8, described cutting unit 600 is electromagnetism relay, relay coil KG one end of described electromagnetism relay is connected with voltage input end VCC, the other end of described relay coil KG is connected with the colelctor electrode of described driving triode Q2, the grounded emitter of described driving triode Q2, the base stage of described driving triode Q2, described resistance R8 and described control unit connect successively, the two ends of the armature K1 of described electromagnetism relay are connected in the backbone of described remote control socket.
In the current foldback circuit for socket provided by the invention; also comprise diode D2; one end of described diode D2 is connected between described relay coil KG and described driving triode Q2, and the other end of described diode D2 is connected with the other end of described relay coil KG.
Specifically, described anti-interference unit 300 comprises energy storage electric capacity C6, rectification circuit and filtering circuit, the control chip U2 of one end of described energy storage electric capacity C6, described rectification circuit, described filtering circuit and described control unit 200 connects successively, the other end ground connection of described energy storage electric capacity C6, the two ends of described CT current/voltage transformer or current/voltage sampling resistance two ends with described energy storage electric capacity C6 are connected respectively. wherein, described rectification circuit is rectification diode D1. described filtering circuit comprises filter capacitor C7, filter capacitor C8, resistance R13 and resistance R12, and this anti-interference unit 300 also comprises resistance R11. described energy storage electric capacity C6 is connected with the positive pole of described rectification diode D1, the negative pole of described rectification diode D1 is connected with one end of described resistance R12, the other end of described resistance R12 is connected with the 6th pin of the control chip U2 of described control unit 200, one end of described filter capacitor C8 is connected between the 6th pin of the control chip U2 of described resistance R12 and described control unit 200, the other end ground connection of described filter capacitor C8, described resistance R13 parallel connection and described electric capacity C8 two ends, one end of described filter capacitor C7 is connected between described rectification diode D1 and described resistance R12, the other end ground connection of described filter capacitor C7, one end of described resistance R11 is connected between described energy storage electric capacity C6 and described rectification diode D1, the other end ground connection of described resistance R11.
The above embodiment only have expressed several enforcement modes of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to patent scope of the present invention. , it is also possible to make some distortion and improvement, it should be appreciated that for the person of ordinary skill of the art, without departing from the inventive concept of the premise these all belong to protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (5)
1. the current foldback circuit for socket, it is characterised in that, comprise the detecting unit being electrically connected successively, anti-interference unit, control unit, drive unit and cutting unit;
The electric current signal that described detecting unit flows through described remote control socket for detecting, described anti-interference unit is used for the testing result signal to described detecting unit and carries out anti-interference process and the testing result signal after carrying out anti-interference process is sent to described control unit, described control unit is used for judging whether the electric current signal flowing through described remote control socket exceedes predetermined value according to described testing result signal, and cuts off the electric current of described remote control socket exceeding cutting unit described in drive unit drives described in described predetermined value control.
2. the current foldback circuit for socket according to claim 1, it is characterised in that, described current detecting unit is CT current/voltage transformer or current/voltage sampling resistance.
3. the current foldback circuit for socket according to claim 2, it is characterized in that, described driving unit comprises driving triode Q2 and resistance R8, described cutting unit is electromagnetism relay, relay coil one end of described electromagnetism relay is connected with voltage input end VCC, the other end of described relay coil is connected with the colelctor electrode of described driving triode Q2, the grounded emitter of described driving triode Q2, the base stage of described driving triode Q2, described resistance R8 and described control unit connect successively, the two ends of the armature of described electromagnetism relay are connected on the backbone of described remote control socket.
4. the current foldback circuit for socket according to claim 3; it is characterized in that; also comprise diode D2; one end of described diode D2 is connected between described relay coil and described driving triode Q2, and the other end of described diode D2 is connected with the other end of described relay coil.
5. the current foldback circuit for socket according to claim 4; it is characterized in that; also comprise the galvanic voltage transformation module for alternating current being converted to predetermined dimension; the input of described voltage transformation module is connected with electrical network, and the output of described voltage transformation module is connected with the power supply end of described control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025137.1A CN105680251A (en) | 2016-01-15 | 2016-01-15 | Over-current protection circuit for socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025137.1A CN105680251A (en) | 2016-01-15 | 2016-01-15 | Over-current protection circuit for socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105680251A true CN105680251A (en) | 2016-06-15 |
Family
ID=56300725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610025137.1A Pending CN105680251A (en) | 2016-01-15 | 2016-01-15 | Over-current protection circuit for socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105680251A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2427931Y (en) * | 2000-05-17 | 2001-04-25 | 深圳市金科田实业有限公司 | Remote switch device with electric power carrier communication function |
| CN201623333U (en) * | 2009-12-16 | 2010-11-03 | 张盖西 | Intelligent safety power socket |
| US20120049829A1 (en) * | 2009-05-19 | 2012-03-01 | Rohm Co., Ltd. | Power Supply Apparatus and Electronic Device Provided With Same |
| CN202651766U (en) * | 2012-07-20 | 2013-01-02 | 李彬林 | Single-phase motor protective device |
| CN103633616A (en) * | 2013-11-25 | 2014-03-12 | 深圳市麦格米特驱动技术有限公司 | Overcurrent protection circuit |
| CN204287796U (en) * | 2014-11-13 | 2015-04-22 | 郑州众智科技股份有限公司 | There is the expansion module of alternating voltage detection and output switch parameter function |
-
2016
- 2016-01-15 CN CN201610025137.1A patent/CN105680251A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2427931Y (en) * | 2000-05-17 | 2001-04-25 | 深圳市金科田实业有限公司 | Remote switch device with electric power carrier communication function |
| US20120049829A1 (en) * | 2009-05-19 | 2012-03-01 | Rohm Co., Ltd. | Power Supply Apparatus and Electronic Device Provided With Same |
| CN201623333U (en) * | 2009-12-16 | 2010-11-03 | 张盖西 | Intelligent safety power socket |
| CN202651766U (en) * | 2012-07-20 | 2013-01-02 | 李彬林 | Single-phase motor protective device |
| CN103633616A (en) * | 2013-11-25 | 2014-03-12 | 深圳市麦格米特驱动技术有限公司 | Overcurrent protection circuit |
| CN204287796U (en) * | 2014-11-13 | 2015-04-22 | 郑州众智科技股份有限公司 | There is the expansion module of alternating voltage detection and output switch parameter function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107069655B (en) | Voltage protection circuit | |
| CN102800526B (en) | Electro-magnetic contactor and electro-magnetic contactor monitoring system | |
| CN204349949U (en) | A kind of air conditioner and low standby power loss circuit thereof | |
| CN103378577A (en) | Power supply control device of household appliance and air conditioner | |
| CN204389925U (en) | A kind of air conditioner and low standby power loss circuit thereof | |
| CN107733102B (en) | Receiving end circuit for wireless charging and vehicle using same | |
| CN104753327A (en) | Switching power supply | |
| CN202817702U (en) | Current leakage protection device | |
| CN201845061U (en) | Circuit breaking and short circuit detection circuit of alternating current fan | |
| CN208337937U (en) | LED light tube drive circuit and LED illumination device | |
| CN104426001A (en) | Socket and electric-shock resistant circuit thereof | |
| CN103442490A (en) | Miniaturized LED constant-current drive circuit with low electromagnetic interference | |
| CN204392215U (en) | A kind of air conditioner and low standby power loss circuit thereof | |
| CN105680251A (en) | Over-current protection circuit for socket | |
| CN101257211A (en) | Circuit for preventing powered on moment impact in frequency converting air conditioner | |
| CN205488858U (en) | Energy -conserving socket of long -distance intelligent control | |
| CN203481578U (en) | Remote-control type power switching device | |
| CN102904210A (en) | Leakage protection method, leakage protection device and water heater | |
| CN104464151B (en) | A kind of antitheft detection warning device for road lighting cable | |
| CN105144843A (en) | Operating device for luminous elements | |
| CN102820789A (en) | Alternating current zero and live wire identification conversion circuit | |
| CN202634277U (en) | Redundance ultra-long life switch power supply | |
| CN208739451U (en) | A kind of circuit system of railway signal LED bulb | |
| CN201541113U (en) | Controller capable of automatic electricity restriction | |
| CN205911550U (en) | WIFI smart jack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |