CN101707436A - Direct-current polarity switching circuit, and lamp and charger using same - Google Patents
Direct-current polarity switching circuit, and lamp and charger using same Download PDFInfo
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- CN101707436A CN101707436A CN200910106207A CN200910106207A CN101707436A CN 101707436 A CN101707436 A CN 101707436A CN 200910106207 A CN200910106207 A CN 200910106207A CN 200910106207 A CN200910106207 A CN 200910106207A CN 101707436 A CN101707436 A CN 101707436A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention relates to a direct-current polarity switching circuit, and a lamp and a charger using the same. The direct-current polarity switching circuit comprises a first voltage input end, a second voltage input end, a first output end and a second output end, and further comprises a rectifier bridge circuit used for receiving an input voltage from the first voltage input end and the second voltage input end, outputting a negative voltage at the first output end and outputting a positive voltage at the second output end. Through the implementation of the direct-current polarity switching circuit of the invention, the polarities of the input voltage can be converted reliably. Through the implementation of the lamp of the invention, a user can plug a lamp directly regardless of the anode or the cathode when charging the lamp; and the user can wire without differentiating the anode from the cathode of a direct current when installing a power supply of the lamp. Through the implementation of the charger of the invention, the user can charge by the charger more conveniently without wasting time to differentiate the anode from the cathode.
Description
Technical field
The present invention relates to circuit, more particularly, relate to the light fixture and the charger of a kind of direct-current polarity switching and this circuit of use.
Background technology
In the use of DC power supply, the user often needs supply voltage positive and negative judged with the electrical equipment of avoiding electric voltage reverse-connection to cause and damages or cause other danger.Therefore need a kind of circuit or the device that can change DC power supply voltage, no matter its input voltage the two poles of the earth positive and negative equal can guarantee output cathode for just, output negative pole is for negative.
Existing direct-current polarity switching generally adopts the circuit of selector switch and so on.Wherein selector switch as shown in Figure 1, it need be with manually switching, when IN1 for input+, IN3 be input-time, switch is up closed, when IN2 for import+, IN4 is input-time, switch is closure down; Yet because the probability of people's error is bigger, so selector switch is not too reliable.
Summary of the invention
The technical problem to be solved in the present invention is, the defective at the poor reliability of prior art provides a kind of reliability high direct-current polarity switching.
The technical scheme that the present invention solves its technical problem employing is, a kind of direct-current polarity switching, comprise first voltage input end, second voltage input end, first output and second output, also comprise rectifier circuit, be used for receiving input voltage from described first voltage input end and second voltage input end, at described first output output negative voltage, at described second output output positive voltage.
In direct-current polarity switching of the present invention, described rectifier circuit comprises diode D1, diode D2, diode D3 and diode D4, the anode of wherein said diode D1 is connected to the anode of described diode D2, the negative electrode of described diode D1 is connected to the anode of described diode D3, the negative electrode of described diode D3 is connected to the negative electrode of described diode D4, the anode of described diode D4 is connected to the negative electrode of described diode D2, described first voltage input end is connected between the negative electrode of the anode of described diode D3 and described diode D1, described second voltage input end is connected between the negative electrode of the anode of described diode D4 and described diode D2, described second output is connected between the anode of the anode of described diode D1 and described diode D2, and described first output is connected between the negative electrode of the negative electrode of described diode D3 and described diode D4.
In direct-current polarity switching of the present invention, described diode is a Schottky diode.
In direct-current polarity switching of the present invention, described direct-current polarity switching further comprises the negative electrode that is arranged on described diode D3 and first current sensing means between described first output.
In direct-current polarity switching of the present invention, described direct-current polarity switching further comprises the negative electrode that is arranged on described diode D4 and second current sensing means between described first output.
In direct-current polarity switching of the present invention, described first current sensing means is LED lamp or current inductor; Described second current sensing means is LED lamp or current inductor.
In direct-current polarity switching of the present invention, described direct-current polarity switching further comprises the indicator light that is arranged on described second output.
The present invention also constructs a kind of light fixture, described light fixture comprises lamp main body and direct-current polarity switching, described direct-current polarity switching, comprise first voltage input end, second voltage input end, first output and second output, also comprise rectifier circuit, be used for receiving input voltage, at described first output output negative voltage, at described second output output positive voltage from described first voltage input end and second voltage input end.
In light fixture of the present invention, described rectifier circuit comprises diode D1, diode D2, diode D3 and diode D4, the anode of wherein said diode D1 is connected to the anode of described diode D2, the negative electrode of described diode D1 is connected to the anode of described diode D3, the negative electrode of described diode D3 is connected to the negative electrode of described diode D4, the anode of described diode D4 is connected to the negative electrode of described diode D2, described first voltage input end is connected between the negative electrode of the anode of described diode D3 and described diode D1, described second voltage input end is connected between the negative electrode of the anode of described diode D4 and described diode D2, described second output is connected between the anode of the anode of described diode D1 and described diode D2, and described first output is connected between the negative electrode of the negative electrode of described diode D3 and described diode D4.
The present invention also constructs a kind of charger, comprise housing, charging circuit, described charging circuit comprises direct-current polarity switching, direct-current polarity switching, comprise first voltage input end, second voltage input end, first output and second output, also comprise rectifier circuit, be used for receiving input voltage from described first voltage input end and second voltage input end, at described first output output negative voltage, at described second output output positive voltage.
In charger of the present invention, described rectifier circuit comprises diode D1, diode D2, diode D3 and diode D4, the anode of wherein said diode D1 is connected to the anode of described diode D2, the negative electrode of described diode D1 is connected to the anode of described diode D3, the negative electrode of described diode D3 is connected to the negative electrode of described diode D4, the anode of described diode D4 is connected to the negative electrode of described diode D2, described first voltage input end is connected between the negative electrode of the anode of described diode D3 and described diode D1, described second voltage input end is connected between the negative electrode of the anode of described diode D4 and described diode D2, described second output is connected between the anode of the anode of described diode D1 and described diode D2, and described first output is connected between the negative electrode of the negative electrode of described diode D3 and described diode D4.
Implement direct-current polarity switching of the present invention, can carry out polar switching to input voltage reliably, need manually-operated direct-current polarity switching with respect to prior art, reliability of the present invention is higher.Implement light fixture of the present invention, can make the client when light fixture is charged, need not manage both positive and negative polarity and directly insert, and voltage drop is lower.Also can make the client when lamp power is installed, need not distinguish the direct wiring of galvanic both positive and negative polarity.Implement charger of the present invention, make the user when using this charger to charge, need not the both positive and negative polarity that carries out consuming time and differentiate, more convenient.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the principle schematic of the selected on-off circuit of prior art;
Fig. 2 is the theory diagram of first embodiment of direct-current polarity switching of the present invention;
Fig. 3 is the circuit theory diagrams of second embodiment of direct-current polarity switching of the present invention;
Fig. 4 is the circuit theory diagrams of the 3rd embodiment of direct-current polarity switching of the present invention;
Fig. 5 is the circuit diagram of the application of direct-current polarity switching of the present invention on light fixture.
Embodiment
Fig. 2 is the theory diagram of first embodiment of direct-current polarity switching of the present invention. as shown in Figure 2, direct-current polarity switching of the present invention comprises the first voltage input end IN1, the second voltage input end IN2, the first output OUT2 and the second output OUT1, wherein also comprise rectifier circuit 100, be used for receiving input voltage from described first voltage input end and second voltage input end, at described first output output negative voltage, at described second output output positive voltage.
Fig. 3 is the circuit theory diagrams of second embodiment of direct-current polarity switching of the present invention.As shown in Figure 3, direct-current polarity switching of the present invention comprises diode D1, diode D2, diode D3 and diode D4, wherein the anode of diode D1 is connected to the anode of diode D2, the negative electrode of diode D1 is connected to the anode of diode D3, the negative electrode of diode D3 is connected to the negative electrode of diode D4, the anode of diode D4 is connected to the negative electrode of diode D2, the first voltage input end IN1 is connected between the negative electrode of the anode of diode D3 and diode D1, the second voltage input end IN2 is connected between the negative electrode of the anode of diode D4 and diode D2, the second output OUT1 is connected between the anode of the anode of diode D1 and diode D2, and the first output OUT2 is connected between the negative electrode of the negative electrode of diode D3 and diode D4.In the present embodiment, diode D1, D2, D3 and D4 are Schottky diode.Owing to adopted Schottky diode, can make that voltage drop is lower.
When the first voltage input end IN1 for just, the second voltage input end IN2 when negative, Schottky diode D3, D2 conducting, the first output OUT2 by Schottky diode D3, the output of D2 direct current is for just, the second output OUT1 is for bearing.
When the first voltage input end IN1 for negative, the second voltage input end IN2 is timing, Schottky diode D1, D4 conducting, the first output OUT2 by Schottky diode D1, the output of D4 direct current is for just, the second output OUT1 is for bearing.
Thereby realized that regardless of direct current input polarity circuit output is the first output OUT2 for just all the time, the second output OUT1 is for bearing.
A preferred embodiment of the present invention, direct-current polarity switching further comprise the indicator light D5 that is arranged on second output.D5 is the LED lamp, and when the first voltage input end IN1 and the second voltage input end IN2 had the voltage input, this LED lamp will be lighted, and can notify this direct-current polarity switching of user that the voltage input is arranged like this, and is safer.
Fig. 4 is the circuit theory diagrams of the 3rd embodiment of direct-current polarity switching of the present invention.In this embodiment, this direct-current polarity switching also comprises the testing circuit that is used to detect input voltage polarity.Testing circuit can comprise negative electrode and first current sensing means 201 between the first output OUT2 and negative electrode that is arranged on diode D4 and second current sensing means 202 between the first output OUT2 that is arranged on diode D3.This first current sensing means and second current sensing means can be also LED lamps of current inductor.In the direct-current polarity switching of present embodiment, also comprise the indicator light D5 that is arranged on second output.D5 is the LED lamp, and when the first voltage input end IN1 and the second voltage input end IN2 had the voltage input, this LED lamp will be lighted, and can notify this direct-current polarity switching of user that the voltage input is arranged like this, and is safer.
When simultaneously first current sensing means 201 and second current sensing means 202 being set:
When the first voltage input end IN1 for just, when the second voltage input end IN2 is negative, Schottky diode D3, D2 conducting, therefore will there be electric current to flow to the first output OUT2 from the anode of Schottky diode D3, and Schottky diode D4, D1 end at this moment, therefore when first current sensing means 201 can detect electric current, the first voltage input end IN1 is described for just, the second voltage input end IN2 bears.
When the first voltage input end IN1 for negative, the second voltage input end IN2 is timing, therefore Schottky diode D1, D4 conducting will have electric current to flow to the first output OUT2 from the anode of Schottky diode D4, and this moment, Schottky diode D3, D2 ended.Therefore when second current sensing means 202 can detect electric current, the first voltage input end IN1 is described for bearing, the second voltage input end IN2 is for just.
In simplified embodiment of the present invention, also can be only between the negative electrode of diode D3 and the first output OUT2, first current sensing means 201 be set, and indicator light D5. is set when first current sensing means 201 detects electric current at second output, the first voltage input end IN1 is for just, the second voltage input end IN2 is for negative, when it did not detect electric current and indicator light D5 and lights, the first voltage input end IN1 was for negative, and the second voltage input end IN2 is for just.
In another simplified embodiment of the present invention, also can be only also can be only between the negative electrode of diode D4 and the first output OUT2, second current sensing means 202 be set, and indicator light D5 be set at second output.When second current sensing means 202 detected electric current, the first voltage input end IN1 was for negative, and the second voltage input end IN2 is for just.When second current sensing means 202 did not detect electric current and indicator light D5 and lights, the first voltage input end IN1 was for just, and the second voltage input end IN2 is for negative.
In another embodiment of the present invention, indicator light D5 can be set, can judge that according to current sensing means and loaded work piece state the voltage of the first voltage input end IN1 and the second voltage input end IN2 is positive and negative by the technical staff.
Fig. 5 is the circuit diagram of the application of direct-current polarity switching of the present invention on light fixture.As shown in Figure 5,, can make the client when light fixture is charged, need not manage both positive and negative polarity and directly insert when direct-current polarity switching of the present invention is applied on the lamp circuit.Also can make the client when lamp power is installed, need not distinguish the direct wiring of galvanic both positive and negative polarity.
The invention also discloses a kind of light fixture, light fixture comprises lamp main body and direct-current polarity switching, direct-current polarity switching, comprise first voltage input end, second voltage input end, first output and second output, wherein also comprise rectifier circuit, be used for receiving input voltage, at described first output output negative voltage, at described second output output positive voltage from described first voltage input end and second voltage input end.
Those skilled in the art are under instruction of the present invention, obviously each embodiment of direct-current polarity switching of the present invention can be applied to light fixture, acquisition comprises the light fixture of direct-current polarity switching of the present invention, thereby lamp installation polarity connects the anti-variety of issue that causes in the solution prior art, just is not repeated at this.
The invention also discloses a kind of charger, comprise housing, charging circuit, charging circuit comprises direct-current polarity switching, direct-current polarity switching comprises first voltage input end, second voltage input end, first output and second output, wherein also comprise rectifier circuit, be used for receiving input voltage, at described first output output negative voltage, at described second output output positive voltage from described first voltage input end and second voltage input end.
Those skilled in the art obviously can be applied to charger with each embodiment of direct-current polarity switching of the present invention under guidance of the present invention, obtain to comprise the charger of direct-current polarity switching of the present invention, just are not repeated at this.Adopt charger of the present invention, the user need not to consider polarity when using its charging, and is therefore more convenient.
Though the present invention describes with specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention, therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (9)
1. direct-current polarity switching, comprise first voltage input end, second voltage input end, first output and second output, it is characterized in that, also comprise rectifier circuit, be used for receiving input voltage from described first voltage input end and second voltage input end, at described first output output negative voltage, at described second output output positive voltage.
2. direct-current polarity switching according to claim 1, it is characterized in that, described rectifier circuit comprises diode D1, diode D2, diode D3 and diode D4, the anode of wherein said diode D1 is connected to the anode of described diode D2, the negative electrode of described diode D1 is connected to the anode of described diode D3, the negative electrode of described diode D3 is connected to the negative electrode of described diode D4, the anode of described diode D4 is connected to the negative electrode of described diode D2, described first voltage input end is connected between the negative electrode of the anode of described diode D3 and described diode D1, described second voltage input end is connected between the negative electrode of the anode of described diode D4 and described diode D2, described second output is connected between the anode of the anode of described diode D1 and described diode D2, and described first output is connected between the negative electrode of the negative electrode of described diode D3 and described diode D4.
3. direct-current polarity switching according to claim 2 is characterized in that, described diode is a Schottky diode.
4. according to claim 2 or 3 described direct-current polarity switchings, it is characterized in that described direct-current polarity switching further comprises the negative electrode that is arranged on described diode D3 and first current sensing means between described first output.
5. direct-current polarity switching according to claim 4 is characterized in that, described direct-current polarity switching further comprises the negative electrode that is arranged on described diode D4 and second current sensing means between described first output.
6. direct-current polarity switching according to claim 5 is characterized in that, described first current sensing means is LED lamp or current inductor; Described second current sensing means is LED lamp or current inductor.
7. direct-current polarity switching according to claim 1 is characterized in that described direct-current polarity switching further comprises the indicator light that is arranged on described second output.
8. light fixture comprises lamp main body and as the described direct-current polarity switching of arbitrary claim among the claim 1-7.
9. a charger comprises housing, charging circuit, it is characterized in that, described charging circuit comprises the described direct-current polarity switching of arbitrary claim among the claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106207A CN101707436A (en) | 2009-03-20 | 2009-03-20 | Direct-current polarity switching circuit, and lamp and charger using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106207A CN101707436A (en) | 2009-03-20 | 2009-03-20 | Direct-current polarity switching circuit, and lamp and charger using same |
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| Publication Number | Publication Date |
|---|---|
| CN101707436A true CN101707436A (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910106207A Pending CN101707436A (en) | 2009-03-20 | 2009-03-20 | Direct-current polarity switching circuit, and lamp and charger using same |
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| CN (1) | CN101707436A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711341A (en) * | 2012-06-26 | 2012-10-03 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
| CN104427694A (en) * | 2013-08-27 | 2015-03-18 | 无锡华润华晶微电子有限公司 | LED constant-current drive module and LED constant-current drive circuit including LED constant-current drive module |
| CN106847167A (en) * | 2017-03-23 | 2017-06-13 | 利亚德电视技术有限公司 | Tear circuit and attaching method thereof and device before LED display open |
| CN114925007A (en) * | 2022-06-09 | 2022-08-19 | 盈帜科技（常州）有限公司 | Signal conversion circuit |
-
2009
- 2009-03-20 CN CN200910106207A patent/CN101707436A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711341A (en) * | 2012-06-26 | 2012-10-03 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
| CN102711341B (en) * | 2012-06-26 | 2014-06-18 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing |
| CN104427694A (en) * | 2013-08-27 | 2015-03-18 | 无锡华润华晶微电子有限公司 | LED constant-current drive module and LED constant-current drive circuit including LED constant-current drive module |
| CN106847167A (en) * | 2017-03-23 | 2017-06-13 | 利亚德电视技术有限公司 | Tear circuit and attaching method thereof and device before LED display open |
| CN114925007A (en) * | 2022-06-09 | 2022-08-19 | 盈帜科技（常州）有限公司 | Signal conversion circuit |
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Application publication date: 20100512 |