CN104158167B - A kind of positive-negative polarity change-over circuit and electronic equipment - Google Patents
A kind of positive-negative polarity change-over circuit and electronic equipment Download PDFInfo
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- CN104158167B CN104158167B CN201310176346.2A CN201310176346A CN104158167B CN 104158167 B CN104158167 B CN 104158167B CN 201310176346 A CN201310176346 A CN 201310176346A CN 104158167 B CN104158167 B CN 104158167B
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Abstract
The embodiment of the present invention discloses a kind of positive-negative polarity change-over circuit and electronic equipment; wherein positive-negative polarity change-over circuit is constituted using discrete component; using the present invention; can avoid damaging electronic equipment because user is by mistake that the both positive and negative polarity of power supply is reversed; protect electronic equipment; and when user is by mistake reversed by the both positive and negative polarity of power supply, still can guarantee that the normal of electronic equipment is used.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of positive-negative polarity change-over circuit and electronic equipment.
Background technology
Electric energy is closely bound up with our life, and the various normal operation of the electronic equipment such as electronic product, electronic instrument is equal
Electric energy is be unable to do without, and every kind of electronic equipment has very big dependence to the voltage of power supply.
User for electronic equipment accesses power supply when, it is necessary to place power supply as indicated, the positive pole of power supply is accessed into positive pole
Output port, cathode output end mouthful is accessed by the negative pole of power supply, but sometimes user can miss that the both positive and negative polarity of power supply is reversed, lead
Causing electronic equipment can not use, and even result in electronic equipment breaking-up, influence the use of user.
The content of the invention
The embodiment of the present invention provides a kind of positive-negative polarity change-over circuit and electronic equipment, can avoid because user is by mistake by electricity
The both positive and negative polarity in source is reversed and electronic equipment is damaged, and can protect electronic equipment.
In order to solve the above-mentioned technical problem, a kind of positive-negative polarity change-over circuit is the embodiment of the invention provides, including：
Resistance R1, diode D2, switch controller, power slot and power output interface；
The negative electrode of the diode D2 is connected with one end of the power slot, and the anode of the diode D2 is by described
Resistance R1 is connected with one end of the switch controller, and the other end by the switch controller is defeated with the power supply
Outgoing interface is connected；
One end of the switch controller is connected by the resistance R1 with the anode of the diode D2, the switch
The other end of controller is connected with the other end and the power output interface of the power slot respectively.
Wherein, the switch controller includes：
Diode D1 and relay K1；
The negative electrode of diode D1 one end respectively with the relay K1 coils and one end phase of the power slot
Connection, the anode of the diode D1 is connected by the resistance R1 with the negative electrode of the diode D2, and two pole
The anode of pipe D1 is connected with the other end of the relay K1 coils；
One end of the first normally opened contact connects the power slot in the relay K1, and first is normally opened in the relay K1
The other end of contact connects the power output interface, and one end of the second normally opened contact connects the power supply in the relay K1
Groove, the other end of the second normally opened contact connects the power output interface in the relay K1.
Wherein, the power output interface includes：
Positive pole output interface and negative pole output interface；
When not having plant-grid connection in the power slot, the first normally opened contact is exported with the positive pole in the relay K1
Interface is connected, and the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is positive pole, the negative electrode of the diode D1
When the one end for the power slot for being connected is negative pole, electric signal by the first normally opened contact in the relay K1 from it is described just
Pole output interface output, the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is negative pole, the negative electrode of the diode D1
When the one end for the power slot for being connected is positive pole, electric signal is made by the first normally opened contact in relay K1 described in adhesive
The first normally opened contact is connected with the positive pole output interface in the relay K1, and the electric signal passes through the relay K1
In the first normally opened contact exported from the positive pole output interface, electric signal normally opened is touched by relay K1 described in adhesive second
Point, the second normally opened contact is connected with the negative pole output interface in making the relay K1, and second is normal in the relay K1
Contact is opened to be connected with the negative pole output interface.
Correspondingly, the embodiment of the present invention additionally provides a kind of electronic equipment, including：Positive-negative polarity change-over circuit, wherein, institute
Stating positive-negative polarity change-over circuit includes：
Resistance R1, diode D2, switch controller, power slot and power output interface；
The negative electrode of the diode D2 is connected with one end of the power slot, and the anode of the diode D2 is by described
Resistance R1 is connected with one end of the switch controller, and the other end by the switch controller is defeated with the power supply
Outgoing interface is connected；
One end of the switch controller is connected by the resistance R1 with the anode of the diode D2, the switch
The other end of controller is connected with the other end and the power output interface of the power slot respectively.
Wherein, the switch controller includes：
Diode D1 and relay K1；
The negative electrode of diode D1 one end respectively with the relay K1 coils and one end phase of the power slot
Connection, the anode of the diode D1 is connected by the resistance R1 with the anode of the diode D2, and two pole
The anode of pipe D1 is connected with the other end of the relay K1 coils；
One end of the first normally opened contact connects the power slot in the relay K1, and first is normally opened in the relay K1
The other end of contact connects the power output interface, and one end of the second normally opened contact connects the power supply in the relay K1
Groove, the other end of the second normally opened contact connects the power output interface in the relay K1.
Wherein, the power output interface includes：
Positive pole output interface and negative pole output interface；
When not having plant-grid connection in the power slot, the first normally opened contact is exported with the positive pole in the relay K1
Interface is connected, and the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is positive pole, the negative electrode of the diode D1
When the one end for the power slot for being connected is negative pole, electric signal by the first normally opened contact in the relay K1 from it is described just
Pole output interface output, the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is negative pole, the negative electrode of the diode D1
When the one end for the power slot for being connected is positive pole, electric signal is made by the first normally opened contact in relay K1 described in adhesive
The first normally opened contact is connected with the positive pole output interface in the relay K1, and the electric signal passes through the relay K1
In the first normally opened contact exported from the positive pole output interface, electric signal normally opened is touched by relay K1 described in adhesive second
Point, the second normally opened contact is connected with the negative pole output interface in making the relay K1, and second is normal in the relay K1
Contact is opened to be connected with the negative pole output interface.
Implement the embodiment of the present invention, have the advantages that：
Positive-negative polarity converting circuit structure of the invention is simple, low cost, can avoid because user is missed power supply just
Negative pole is reversed and electronic equipment is damaged, protect electronic equipment, and when user is by mistake reversed by the both positive and negative polarity of power supply,
Still can guarantee that the normal of electronic equipment is used.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of circuit theory diagrams of positive-negative polarity change-over circuit provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is referred to, to the embodiment of the invention provides a kind of circuit theory diagrams of positive-negative polarity change-over circuit.Such as Fig. 1
Shown, the positive-negative polarity change-over circuit 10 includes：
Resistance R1, diode D2, switch controller 11, power slot 12 and power output interface 13；
The negative electrode of the diode D2 is connected with one end of the power slot 12, and the anode of the diode D2 passes through institute
Resistance R1 is stated to be connected with one end of the switch controller 11, and the other end by the switch controller 11 with it is described
Power output interface 13 is connected；
One end of the switch controller 11 is connected by the resistance R1 with the anode of the diode D2, described to open
The other end of gateway controller 11 is connected with the other end and the power output interface 13 of the power slot 12 respectively.
Further, in embodiments of the present invention, the switch controller 11 includes：
Diode D1 and relay K1；
The negative electrode of the diode D1 respectively with one end and one end of the power slot 12 of the relay K1 coils
It is connected, the anode of the diode D1 is connected by the resistance R1 with the anode of the diode D2, and described two
The anode of pole pipe D1 is connected with the other end of the relay K1 coils；
One end of the first normally opened contact connects the power slot 12 in the relay K1, and first is normal in the relay K1
The other end for opening contact connects the power output interface 13, and one end connection of the second normally opened contact is described in the relay K1
Power slot 12, the other end of the second normally opened contact connects the power output interface 13 in the relay K1.
It should be noted that the power output interface 13 includes positive pole output interface and negative pole output interface, it is described negative
Pole output interface can be grounded.
With reference to Fig. 1, a kind of operation principle of positive-negative polarity change-over circuit that the present invention is provided is specifically described.
When not having plant-grid connection in the power slot, the first normally opened contact is exported with the positive pole in the relay K1
Interface is connected, and the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot 12 connected when the negative electrode of the diode D2 is positive pole, the moon of the diode D1
When the one end for the power slot 12 that pole is connected is negative pole, electric signal is by the first normally opened contact in the relay K1 from institute
The output of positive pole output interface is stated, the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot 12 connected when the negative electrode of the diode D2 is negative pole, the moon of the diode D1
When the one end for the power slot 12 that pole is connected is positive pole, electric signal is normally opened tactile by relay K1 described in adhesive first
Point, the first normally opened contact is connected with the positive pole output interface in making the relay K1, the electric signal by it is described after
The first normally opened contact is exported from the positive pole output interface in electrical equipment K1, and electric signal is normal by relay K1 described in adhesive second
Contact is opened, the second normally opened contact is connected with the negative pole output interface in making the relay K1, in the relay K1
Two normally opened contacts are connected with the negative pole output interface.
Therefore, no matter how the both positive and negative polarity of power supply is placed in the power slot 12, can ensure in power slot 12 just
One end of pole exports from cathode output end mouthful, and one end of negative pole exports from cathode output end mouthful in power slot 12.
Positive-negative polarity converting circuit structure of the invention is simple, low cost, can avoid because user is missed power supply just
Negative pole is reversed and electronic equipment is damaged, protect electronic equipment, and when user is by mistake reversed by the both positive and negative polarity of power supply,
Still can guarantee that the normal of electronic equipment is used.
The invention provides a kind of electronic equipment, the electronic equipment can include positive-negative polarity change-over circuit；
The electronic equipment can be the equipment that electric light, remote-control toy, remote control etc. need external power supply, and the power supply can
Think lithium battery, battery etc., the positive-negative polarity change-over circuit in the electronic equipment can be in plant-grid connection, it is ensured that electronics
Equipment is normally used.
The circuit structure of the positive-negative polarity change-over circuit in the electronic equipment may refer to Fig. 1, and the positive-negative polarity turns
Changing circuit 10 can include：
Resistance R1, diode D2, switch controller 11, power slot 12 and power output interface 13；
The negative electrode of the diode D2 is connected with one end of the power slot 12, and the anode of the diode D2 passes through institute
Resistance R1 is stated to be connected with one end of the switch controller 11, and the other end by the switch controller 11 with it is described
Power output interface 13 is connected；
One end of the switch controller 11 is connected by the resistance R1 with the anode of the diode D2, described to open
The other end of gateway controller 11 is connected with the other end and the power output interface 13 of the power slot 12 respectively.
Further, in embodiments of the present invention, the switch controller 11 includes：
Diode D1 and relay K1；
The negative electrode of the diode D1 respectively with one end and one end of the power slot 12 of the relay K1 coils
It is connected, the anode of the diode D1 is connected by the resistance R1 with the anode of the diode D2, and described two
The anode of pole pipe D1 is connected with the other end of the relay K1 coils；
One end of the first normally opened contact connects the power slot 12 in the relay K1, and first is normal in the relay K1
The other end for opening contact connects the power output interface 13, and one end connection of the second normally opened contact is described in the relay K1
Power slot 12, the other end of the second normally opened contact connects the power output interface 13 in the relay K1.
It should be noted that the power output interface 13 includes positive pole output interface and negative pole output interface, it is described negative
Pole output interface can be grounded.
With reference to Fig. 1, a kind of operation principle of positive-negative polarity change-over circuit that the present invention is provided is specifically described.
When not having plant-grid connection in the power slot, the first normally opened contact is exported with the positive pole in the relay K1
Interface is connected, and the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot 12 connected when the negative electrode of the diode D2 is positive pole, the moon of the diode D1
When the one end for the power slot 12 that pole is connected is negative pole, electric signal is by the first normally opened contact in the relay K1 from institute
The output of positive pole output interface is stated, the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot 12 connected when the negative electrode of the diode D2 is negative pole, the moon of the diode D1
When the one end for the power slot 12 that pole is connected is positive pole, electric signal is normally opened tactile by relay K1 described in adhesive first
Point, the first normally opened contact is connected with the positive pole output interface in making the relay K1, the electric signal by it is described after
The first normally opened contact is exported from the positive pole output interface in electrical equipment K1, and electric signal is normal by relay K1 described in adhesive second
Contact is opened, the second normally opened contact is connected with the negative pole output interface in making the relay K1, in the relay K1
Two normally opened contacts are connected with the negative pole output interface.
Therefore, no matter how the both positive and negative polarity of power supply is placed in the power slot 12, can ensure in power slot 12 just
One end of pole exports from cathode output end mouthful, and one end of negative pole exports from cathode output end mouthful in power slot 12, so as to ensure that
The normal of electronic equipment is used.
Positive-negative polarity converting circuit structure of the invention is simple, low cost, can avoid because user is missed power supply just
Negative pole is reversed and electronic equipment is damaged, protect electronic equipment, and when user is by mistake reversed by the both positive and negative polarity of power supply,
Still can guarantee that the normal of electronic equipment is used.
One of ordinary skill in the art will appreciate that all or part of flow in realizing above-described embodiment method, can be
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Above disclosed is only present pre-ferred embodiments, can not limit the right model of the present invention with this certainly
Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (2)
1. a kind of positive-negative polarity change-over circuit, it is characterised in that including：
Resistance R1, diode D2, switch controller, power slot and power output interface；
The negative electrode of the diode D2 is connected with one end of the power slot, and the anode of the diode D2 passes through the resistance
R1 is connected with one end of the switch controller, and the other end by the switch controller connects with power supply output
Mouth is connected；
One end of the switch controller is connected by the resistance R1 with the anode of the diode D2, the switch control
The other end of device is connected with the other end and the power output interface of the power slot respectively；
Wherein, the switch controller includes：Diode D1 and relay K1；
The negative electrode of the diode D1 is connected with one end of the relay K1 coils and one end of the power slot respectively,
The anode of the diode D1 is connected by the resistance R1 with the anode of the diode D2, and the diode D1
Anode is connected with the other end of the relay K1 coils；
One end of the first normally opened contact connects the power slot, the first normally opened contact in the relay K1 in the relay K1
The other end connect the power output interface, one end of the second normally opened contact connects the power slot in the relay K1,
The other end of the second normally opened contact connects the power output interface in the relay K1；
The power output interface includes：Positive pole output interface and negative pole output interface；
When there is no plant-grid connection in the power slot, the first normally opened contact and the positive pole output interface in the relay K1
It is connected, the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is positive pole, and the negative electrode of the diode D1 connects
When the one end for the power slot for connecing is negative pole, electric signal is defeated from the positive pole by the first normally opened contact in the relay K1
Outgoing interface is exported, and the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is negative pole, and the negative electrode of the diode D1 connects
When the one end for the power slot for connecing is positive pole, electric signal is made described by the first normally opened contact in relay K1 described in adhesive
The first normally opened contact is connected with the positive pole output interface in relay K1, and the electric signal is by the relay K1 the
One normally opened contact is exported from the positive pole output interface, and electric signal is made by the second normally opened contact in relay K1 described in adhesive
The second normally opened contact is connected with the negative pole output interface in the relay K1, the second normally opened contact in the relay K1
It is connected with the negative pole output interface.
2. a kind of electronic equipment, it is characterised in that including positive-negative polarity change-over circuit, wherein, the positive-negative polarity change-over circuit
Including：
Resistance R1, diode D2, switch controller, power slot and power output interface；
The negative electrode of the diode D2 is connected with one end of the power slot, and the anode of the diode D2 passes through the resistance
R1 is connected with one end of the switch controller, and the other end by the switch controller connects with power supply output
Mouth is connected；
One end of the switch controller is connected by the resistance R1 with the anode of the diode D2, the switch control
The other end of device is connected with the other end and the power output interface of the power slot respectively；
Wherein, the switch controller includes：Diode D1 and relay K1；
The negative electrode of the diode D1 is connected with one end of the relay K1 coils and one end of the power slot respectively,
The anode of the diode D1 is connected by the resistance R1 with the anode of the diode D2, and the diode D1
Anode is connected with the other end of the relay K1 coils；
One end of the first normally opened contact connects the power slot, the first normally opened contact in the relay K1 in the relay K1
The other end connect the power output interface, one end of the second normally opened contact connects the power slot in the relay K1,
The other end of the second normally opened contact connects the power output interface in the relay K1；
The power output interface includes：Positive pole output interface and negative pole output interface；
When there is no plant-grid connection in the power slot, the first normally opened contact and the positive pole output interface in the relay K1
It is connected, the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is positive pole, and the negative electrode of the diode D1 connects
When the one end for the power slot for connecing is negative pole, electric signal is defeated from the positive pole by the first normally opened contact in the relay K1
Outgoing interface is exported, and the second normally opened contact is connected with the negative pole output interface in the relay K1；
The one end for the power slot connected when the negative electrode of the diode D2 is negative pole, and the negative electrode of the diode D1 connects
When the one end for the power slot for connecing is positive pole, electric signal is made described by the first normally opened contact in relay K1 described in adhesive
The first normally opened contact is connected with the positive pole output interface in relay K1, and the electric signal is by the relay K1 the
One normally opened contact is exported from the positive pole output interface, and electric signal is made by the second normally opened contact in relay K1 described in adhesive
The second normally opened contact is connected with the negative pole output interface in the relay K1, the second normally opened contact in the relay K1
It is connected with the negative pole output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310176346.2A CN104158167B (en) | 2013-05-14 | 2013-05-14 | A kind of positive-negative polarity change-over circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310176346.2A CN104158167B (en) | 2013-05-14 | 2013-05-14 | A kind of positive-negative polarity change-over circuit and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104158167A CN104158167A (en) | 2014-11-19 |
| CN104158167B true CN104158167B (en) | 2017-06-16 |
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| CN201310176346.2A Expired - Fee Related CN104158167B (en) | 2013-05-14 | 2013-05-14 | A kind of positive-negative polarity change-over circuit and electronic equipment |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680683A (en) * | 2015-12-02 | 2016-06-15 | 宁波耀德成智能科技有限公司 | Non-polarizedhigh-power interface circuit ofDC power supply for onboard control system |
| CN107332229A (en) * | 2017-08-10 | 2017-11-07 | 珠海经济特区金品电器有限公司 | A kind of display protection circuit for external battery |
| CN110513615A (en) * | 2019-07-29 | 2019-11-29 | 厦门普为光电科技有限公司 | Adjustable light lamp tube |
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|---|---|---|---|---|
| EP0949737A2 (en) * | 1998-04-06 | 1999-10-13 | Siemens Aktiengesellschaft | Reverse battery protection circuit |
| CN201910630U (en) * | 2010-12-14 | 2011-07-27 | 河南省电力公司平顶山供电公司 | Nonpolar connecting charger for direct-current power supply |
| CN202840512U (en) * | 2012-08-30 | 2013-03-27 | 濮阳三友电器有限公司 | Reverse-connection-preventing relay switch circuit |
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|---|---|---|---|---|
| US7012793B2 (en) * | 2002-12-06 | 2006-03-14 | Delta Electronics, Inc. | Power converter with polarity reversal and inrush current protection circuit |
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2013
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|---|---|---|---|---|
| EP0949737A2 (en) * | 1998-04-06 | 1999-10-13 | Siemens Aktiengesellschaft | Reverse battery protection circuit |
| CN201910630U (en) * | 2010-12-14 | 2011-07-27 | 河南省电力公司平顶山供电公司 | Nonpolar connecting charger for direct-current power supply |
| CN202840512U (en) * | 2012-08-30 | 2013-03-27 | 濮阳三友电器有限公司 | Reverse-connection-preventing relay switch circuit |
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| CN104158167A (en) | 2014-11-19 |
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Inventor after: Wang Huizhang Inventor after: Yu Xiaoping Inventor before: Zhou Mingjie Inventor before: Guan Weifang |
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Effective date of registration: 20170519 Address after: 518000 Guangdong city of Shenzhen province Nanshan District Xili Road No. 168 with the Kedar Group Center Building 1 building 22F Applicant after: Shenzhen Irico Autom Technology Co., Ltd. Address before: The main building in Nanshan District city of Shenzhen province Guangdong 518000 East Road No. 84, two floor on the north side of China Applicant before: SHENZHEN OCEAN'S KING LIGHTING ENGINEERING Co.,Ltd. Applicant before: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY Co.,Ltd. |
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