CN102570931A - Power polarity conversion circuit - Google Patents
Power polarity conversion circuit Download PDFInfo
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- CN102570931A CN102570931A CN2010105868239A CN201010586823A CN102570931A CN 102570931 A CN102570931 A CN 102570931A CN 2010105868239 A CN2010105868239 A CN 2010105868239A CN 201010586823 A CN201010586823 A CN 201010586823A CN 102570931 A CN102570931 A CN 102570931A
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- throw switch
- pole double
- spdt
- electric power
- power polarity
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Abstract
The invention is suitable for the field of power supply circuits, and provides a power polarity conversion circuit. In the embodiment of the invention, when a normally open contact of a single-pole double-throw switch S2 is closed, and the normally closed contact of a single-pole double-throw switch S1 is closed, the positive pole of a power supply is communicated with a second output terminal through the single-pole double-throw switch S2, the negative pole of the power supply is communicated with a first output terminal of the single-pole double-throw switch S1, the first output terminal outputs negative voltage, and the second output terminal outputs positive voltage, so that the original polarities of output voltages of both the first output terminal and the second output terminal are changed to achieve the purpose of power polarity conversion. The power polarity conversion circuit has the advantages of low cost, simple circuit structure and reliability in operation.
Description
Technical field
The invention belongs to the power circuit field, relate in particular to a kind of electric power polarity change-over circuit.
Background technology
Continuous development along with science and technology; The application of direct current machine more and more widely; The bridge circuit that people often form through relay, metal-oxide-semiconductor comes the positive-negative polarity of conversion electric power; Thereby realize the direct current machine forward or reverse; Problems such as but relay exists, and mechanical endurance and electrical endurance are relatively short, control is unreliable, control circuit complex structure, electropollution are serious, there are problems such as device is more, circuit structure is complicated, work is unreliable in the bridge circuit that metal-oxide-semiconductor is formed, has had a strong impact on the reliability of entire equipment.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of electric power polarity change-over circuit, is intended to solve present electric power polarity change-over circuit and has that cost is high, circuit structure is complicated and work insecure problem.
The embodiment of the invention is achieved in that a kind of electric power polarity change-over circuit, and said electric power polarity change-over circuit comprises:
Single-pole double-throw switch (SPDT) S1, single-pole double-throw switch (SPDT) S2, first output and second output;
The normally opened contact of said single-pole double-throw switch (SPDT) S1 connects positive source; The normally-closed contact of said single-pole double-throw switch (SPDT) S1 connects power cathode; The common of said single-pole double-throw switch (SPDT) S1 connects first output; The normally opened contact of said single-pole double-throw switch (SPDT) S2 connects positive source, and the normally-closed contact of said single-pole double-throw switch (SPDT) S2 connects power cathode, and the common of said single-pole double-throw switch (SPDT) S2 connects second output.
In embodiments of the present invention, when closed the normally opened contact of single-pole double-throw switch (SPDT) S2, the normally-closed contact of single-pole double-throw switch (SPDT) S1 is closed; This moment, positive source was communicated with second output through single-pole double-throw switch (SPDT) S2; Power cathode is communicated with first output through single-pole double-throw switch (SPDT) S1, first output output negative voltage, second output output positive voltage; Changed the polarity of original first output and the second output output voltage; So just reached the purpose of electric power polarity conversion, this electric power polarity change-over circuit is with low cost, circuit structure is simple, and reliable operation.
Description of drawings
Fig. 1 is the circuit diagram of the electric power polarity change-over circuit that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the circuit structure of the electric power polarity change-over circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
The electric power polarity change-over circuit comprises:
Single-pole double-throw switch (SPDT) S1, single-pole double-throw switch (SPDT) S2, first output terminals A and the second output B;
The normally opened contact of single-pole double-throw switch (SPDT) S1 connects positive source; The normally-closed contact of single-pole double-throw switch (SPDT) S1 connects power cathode; The common of single-pole double-throw switch (SPDT) S1 connects first output terminals A; The normally opened contact of single-pole double-throw switch (SPDT) S2 connects positive source, and the normally-closed contact of single-pole double-throw switch (SPDT) S2 connects power cathode, and the common of single-pole double-throw switch (SPDT) S2 meets the second output B.
As one embodiment of the invention; The electric power polarity change-over circuit also comprises the cascading water diode D1 parallelly connected with single-pole double-throw switch (SPDT) S1; The common of the anode order double-pole double throw switch S1 of cascading water diode D1; The normally opened contact of the negative electrode order double-pole double throw switch S1 of cascading water diode D1, the effect of cascading water diode D1 are exactly to transfer moment of disconnection, the transient energy in the bleed off power down road at the normally opened contact of single-pole double-throw switch (SPDT) S1 to by closure.
As one embodiment of the invention; The electric power polarity change-over circuit also comprises the cascading water diode D2 parallelly connected with single-pole double-throw switch (SPDT) S2; The common of the anode order double-pole double throw switch S2 of cascading water diode D2; The normally opened contact of the negative electrode order double-pole double throw switch S2 of cascading water diode D2, the effect of cascading water diode D2 are exactly to transfer moment of disconnection, the transient energy in the bleed off power down road at the normally opened contact of single-pole double-throw switch (SPDT) S2 to by closure; Wherein, the model of cascading water diode D1 and cascading water diode D2 is the IN4007 type.
As one embodiment of the invention; The electric power polarity change-over circuit also comprises a fuse F 1, and first termination power of fuse F 1 is anodal, the normally opened contact of second end difference order double-pole double throw switch S1 of fuse F 1 and the normally opened contact of single-pole double-throw switch (SPDT) S2; Short trouble appears in the ifs circuit rear end; Fuse F 1 loop of can in time cutting off the electricity supply avoids fault further to enlarge, worsen, and guarantees circuit reliability.
As one embodiment of the invention; The electric power polarity change-over circuit also comprises the Transient Suppression Diode ZD1 between the common of the common that is serially connected in single-pole double-throw switch (SPDT) S1 and single-pole double-throw switch (SPDT) S2; Transient Suppression Diode ZD1 is a kind of over-voltage protector of votage limit type; Can be within a safe range too high voltage limit, thus play the effect of protection back circuit; Wherein, the model of Transient Suppression Diode ZD1 is the P6KE43 type.
For example the operation principle of electric power polarity change-over circuit is described below:
After the energized, because that circuit gets is electric, when the equal closure of the normally-closed contact of single-pole double-throw switch (SPDT) S1 and single-pole double-throw switch (SPDT) S2, when normally opened contact all broke off, first output terminals A and the second output B all communicated the circuit no-output with power cathode;
When closed, the normally-closed contact disconnection of normally opened contact of single-pole double-throw switch (SPDT) S1, when the normally-closed contact closure of single-pole double-throw switch (SPDT) S2, normally opened contact disconnection, first output terminals A communicates with positive source, and the second output B communicates with power cathode;
Closed, the normally-closed contact disconnection of normally opened contact as single-pole double-throw switch (SPDT) S2; When the normally-closed contact closure of single-pole double-throw switch (SPDT) S1, normally opened contact disconnection, this moment, positive source was communicated with the second output B through single-pole double-throw switch (SPDT) S2, and power cathode is communicated with first output terminals A through single-pole double-throw switch (SPDT) S1; First output terminals A output negative voltage; The second output B exports positive voltage, has changed the polarity of the first original output terminals A and the second output B output voltage, has so just reached the purpose of electric power polarity conversion; This electric power polarity change-over circuit is with low cost, circuit structure is simple, and reliable operation.
In embodiments of the present invention, when closed the normally opened contact of single-pole double-throw switch (SPDT) S2, the normally-closed contact of single-pole double-throw switch (SPDT) S1 is closed; This moment, positive source was communicated with the second output B through single-pole double-throw switch (SPDT) S2; Power cathode is communicated with first output terminals A through single-pole double-throw switch (SPDT) S1, first output terminals A output negative voltage, and the second output B exports positive voltage; Changed the polarity of the first original output terminals A and the second output B output voltage; So just reached the purpose of electric power polarity conversion, this electric power polarity change-over circuit is with low cost, circuit structure is simple, and reliable operation.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. an electric power polarity change-over circuit is characterized in that, said electric power polarity change-over circuit comprises:
Single-pole double-throw switch (SPDT) S1, single-pole double-throw switch (SPDT) S2, first output and second output;
The normally opened contact of said single-pole double-throw switch (SPDT) S1 connects positive source; The normally-closed contact of said single-pole double-throw switch (SPDT) S1 connects power cathode; The common of said single-pole double-throw switch (SPDT) S1 connects first output; The normally opened contact of said single-pole double-throw switch (SPDT) S2 connects positive source, and the normally-closed contact of said single-pole double-throw switch (SPDT) S2 connects power cathode, and the common of said single-pole double-throw switch (SPDT) S2 connects second output.
2. electric power polarity change-over circuit as claimed in claim 1; It is characterized in that; Said electric power polarity change-over circuit also comprises the cascading water diode D1 parallelly connected with said single-pole double-throw switch (SPDT) S1; The common of the anode order double-pole double throw switch S1 of said cascading water diode D1, the normally opened contact of the negative electrode order double-pole double throw switch S1 of said cascading water diode D1.
3. electric power polarity change-over circuit as claimed in claim 1; It is characterized in that; Said electric power polarity change-over circuit also comprises the cascading water diode D2 parallelly connected with said single-pole double-throw switch (SPDT) S2; The common of the anode order double-pole double throw switch S2 of said cascading water diode D2, the normally opened contact of the negative electrode order double-pole double throw switch S2 of said cascading water diode D2.
4. like claim 2 or 3 described electric power polarity change-over circuits, it is characterized in that the model of said cascading water diode D1 and cascading water diode D2 is the IN4007 type.
5. electric power polarity change-over circuit as claimed in claim 1; It is characterized in that; Said electric power polarity change-over circuit also comprises a fuse F 1; First termination power of said fuse F 1 is anodal, the normally opened contact of second end difference order double-pole double throw switch S1 of said fuse F 1 and the normally opened contact of single-pole double-throw switch (SPDT) S2.
6. electric power polarity change-over circuit as claimed in claim 1 is characterized in that, said electric power polarity change-over circuit also comprises the Transient Suppression Diode ZD1 between the common of the common that is serially connected in single-pole double-throw switch (SPDT) S1 and single-pole double-throw switch (SPDT) S2.
7. electric power polarity change-over circuit as claimed in claim 6 is characterized in that, the model of said Transient Suppression Diode ZD1 is the P6KE43 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105868239A CN102570931A (en) | 2010-12-14 | 2010-12-14 | Power polarity conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105868239A CN102570931A (en) | 2010-12-14 | 2010-12-14 | Power polarity conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102570931A true CN102570931A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105868239A Pending CN102570931A (en) | 2010-12-14 | 2010-12-14 | Power polarity conversion circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN102570931A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788035A (en) * | 2012-08-01 | 2012-11-21 | 杭州新都奥兰汽车空调有限公司 | Forward and reverse rotation device of condensing fan |
| CN102882401A (en) * | 2012-09-19 | 2013-01-16 | 华为技术有限公司 | Inverter with wide voltage input range and input-stage circuit thereof |
| 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 |
| CN105896744A (en) * | 2016-04-26 | 2016-08-24 | 圣邦微电子（北京）股份有限公司 | LC tank circuit resonant coupling and non-resonant coupling tank circuit control method and circuit |
| CN107946711A (en) * | 2017-11-22 | 2018-04-20 | 中国科学院微电子研究所 | Adjustable attenuator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004001659A (en) * | 2002-06-03 | 2004-01-08 | Mitsuba Corp | Wiper device |
| CN2686181Y (en) * | 2003-12-18 | 2005-03-16 | 大庆石油管理局 | Electric power polarity protector |
| CN200980055Y (en) * | 2006-12-01 | 2007-11-21 | 凯纬医疗科技（中山）有限公司 | A controlling circuit for the positive and negative turning of a ceiling fan |
| CN201328094Y (en) * | 2008-12-19 | 2009-10-14 | 江苏红叶视听器材股份有限公司 | Motor control circuit |
-
2010
- 2010-12-14 CN CN2010105868239A patent/CN102570931A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004001659A (en) * | 2002-06-03 | 2004-01-08 | Mitsuba Corp | Wiper device |
| CN2686181Y (en) * | 2003-12-18 | 2005-03-16 | 大庆石油管理局 | Electric power polarity protector |
| CN200980055Y (en) * | 2006-12-01 | 2007-11-21 | 凯纬医疗科技（中山）有限公司 | A controlling circuit for the positive and negative turning of a ceiling fan |
| CN201328094Y (en) * | 2008-12-19 | 2009-10-14 | 江苏红叶视听器材股份有限公司 | Motor control circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788035A (en) * | 2012-08-01 | 2012-11-21 | 杭州新都奥兰汽车空调有限公司 | Forward and reverse rotation device of condensing fan |
| CN102788035B (en) * | 2012-08-01 | 2015-06-03 | 杭州新都奥兰汽车空调有限公司 | Forward and reverse rotation device of condensing fan |
| CN102882401A (en) * | 2012-09-19 | 2013-01-16 | 华为技术有限公司 | Inverter with wide voltage input range and input-stage circuit thereof |
| 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 |
| CN105896744A (en) * | 2016-04-26 | 2016-08-24 | 圣邦微电子（北京）股份有限公司 | LC tank circuit resonant coupling and non-resonant coupling tank circuit control method and circuit |
| CN107946711A (en) * | 2017-11-22 | 2018-04-20 | 中国科学院微电子研究所 | Adjustable attenuator |
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Application publication date: 20120711 |