CN101997431A - Design method of alternating current/direct current conversion circuit - Google Patents
Design method of alternating current/direct current conversion circuit Download PDFInfo
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- CN101997431A CN101997431A CN 201010582637 CN201010582637A CN101997431A CN 101997431 A CN101997431 A CN 101997431A CN 201010582637 CN201010582637 CN 201010582637 CN 201010582637 A CN201010582637 A CN 201010582637A CN 101997431 A CN101997431 A CN 101997431A
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Abstract
The invention relates to a direct current power supply, in particular to a design method of an alternating current/direct current conversion circuit for converting 220V alternating current into direct current without adopting a transformer, which is characterized in that a rectifying circuit and a DC/DC (Direct current/Direct current) conversion circuit are arranged in a casing, a load circuit of the rectifying circuit is connected in series with a current limiting resistor R0 and a light emitting diode string, a silicon photoelectric generator pack is arranged in the light emitting direction of the light emitting diode string, the voltage output end of the silicon photoelectric generator pack is electrically connected with the input end of the DC/DC conversion circuit, and the output end of the DC/DC conversion circuit is electrically connected with the DC/DC voltage output end of the casing. The invention provides the design method of the alternating current/direct current conversion circuit for converting the 220V alternating current into the direct current without adopting the transformer.
Description
Technical field
The present invention relates to a kind of DC power supply, particularly a kind of method for designing that the 220V alternating current is converted to galvanic ac-dc converter circuit without transformer.
Background technology
In electronic equipment, the required power supply of electronic device is many to be to convert to galvanicly by the 220V alternating current, and this transfer process has by transformer finishes the conversion of high pressure to low pressure, converts into low-voltage alternating-current to stream again.The switching power circuit of employing pattern is also arranged, and is that its volume of which kind of form all is must be bigger.It all needs transformer, and the transformer of Switching Power Supply is smaller.
Summary of the invention
The purpose of this invention is to provide a kind of method for designing that does not need transformer the 220V alternating current to be converted to galvanic ac-dc converter circuit.
The object of the present invention is achieved like this, a kind of method for designing of ac-dc converter circuit, it is characterized in that: rectification circuit and DC/DC change-over circuit are arranged in housing, the load circuit of rectification circuit is serially connected with current-limiting resistance R0 and light emitting diode string, the silicon photocell group is arranged on the light emission direction of light emitting diode string, the voltage output end of silicon photocell group is electrically connected with the input of DC/DC change-over circuit, and the output of DC/DC change-over circuit is electrically connected with the DC/DC voltage output end of housing.
The light emitting diode string number of the load circuit serial connection of described rectification circuit is according to the output current and the voltage parameter decision of DC/DC change-over circuit.
The rectifier diode of described rectification circuit is a light-emitting diode.
Described rectification circuit is bridge rectifier or semibridge system rectification circuit.
Described silicon photocell component becomes many groups, being divided into many group silicon photocell groups is electrically connected with the input of a plurality of DC/DC change-over circuits respectively, the output of a plurality of DC/DC change-over circuits is electrically connected with a plurality of DC/DC voltage output ends of housing, and a plurality of DC/DC voltage output ends are not altogether or not altogether.
Advantage of the present invention is: owing to constitute the AC/DC change-over circuit by photoelectricity coupling circuit, a DC/DC change-over circuit, the diode of the rectification circuit of the input of photoelectricity coupling circuit is a light-emitting diode, the output circuit of photoelectricity coupling circuit is a silicon photocell, that is to say by the 220V alternating current is changeed the driven for emitting lights diode, by silicon photocell transform light energy is become electric energy, by the DC/DC change-over circuit voltage of silicon photocell is being changed into the direct current of needs at last.Direct current is to isolate fully with the 220V alternating current, therefore has the advantage that body is slight, reliability is high, anti-interference is good.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing:
Fig. 1 is principle of the invention figure;
Fig. 2 is the embodiment of the invention 1 structural representation;
Fig. 3 is the embodiment of the invention 2 structural representations.
Among the figure, 1, bridge rectifier; 2, DC/DC change-over circuit; 3, rectification circuit; 4, silicon photocell group; 5, housing; 6, light emitting diode string; 7, DC/DC voltage output end; 8, load circuit.
Embodiment
As shown in Figure 1, a kind of method for designing of ac-dc converter circuit, rectification circuit 3 and DC/DC change-over circuit 2 are arranged in housing 5, the rectifier diode of rectification circuit 3 is light-emitting diodes, the load circuit 8 of rectification circuit 3 is serially connected with current-limiting resistance R0 and light emitting diode string 6, silicon photocell group 4 is arranged on the light emission direction of light emitting diode string 6, the voltage output end of silicon photocell group 4 is electrically connected with the input of DC/DC change-over circuit 2, and the output of DC/DC change-over circuit 2 is electrically connected with the DC/DC voltage output end 7 of housing 5.Rectification circuit 3 is bridge rectifiers 1, and light emitting diode string 6 numbers of load circuit 8 serial connections of bridge rectifier 1 are according to the output current and the voltage parameter decision of DC/DC change-over circuit 2.
As shown in Figure 2, rectification circuit 3 and DC/DC change-over circuit 2 are arranged in housing 5, the load circuit 8 of rectification circuit is serially connected with current-limiting resistance and light emitting diode string 6, silicon photocell group 4 is arranged on the light emission direction of light emitting diode string 6, the voltage output end of silicon photocell group 4 is electrically connected with the input of DC/DC change-over circuit 2, and the output of DC/DC change-over circuit 2 is electrically connected with the DC/DC voltage output end 7 of housing 5.Rectification circuit 3 is bridge rectifiers 1, the number of the light emitting diode string 6 of load circuit 8 serial connections of bridge rectifier 1 is to determine according to DC/DC output current and voltage, embodiment 2 is common rectification two utmost points with the rectifier diode that is not both rectification circuit 3 of embodiment 1, as 1N4001,1N4007 or the like.
As shown in Figure 3, rectification circuit 3 and DC/DC change-over circuit 2 are arranged in housing 5, the load circuit 8 of rectification circuit is serially connected with current-limiting resistance and light emitting diode string 6, silicon photocell group 4 is arranged on the light emission direction of light emitting diode string 6, silicon photocell group 4 is divided into many groups, being divided into many group silicon photocell groups 4 is electrically connected with the input of a plurality of DC/DC change-over circuits 2 respectively, the output of a plurality of DC/DC change-over circuits 2 is electrically connected with a plurality of DC/DC voltage output ends of housing 5, and a plurality of DC/DC voltage output end electricity altogether.Rectification circuit 3 is bridge rectifiers, and the light-emitting diode number of load circuit 8 serial connections of bridge rectifier is determined according to DC/DC output current and voltage.
As shown in Figure 3, rectification circuit 3 and DC/DC change-over circuit 2 are arranged in housing 5, the load circuit 8 of rectification circuit is serially connected with current-limiting resistance and light emitting diode string 6, silicon photocell group 4 is arranged on the light emission direction of light emitting diode string 6, silicon photocell group 4 is divided into many groups, being divided into many group silicon photocell groups 4 is electrically connected with the input of a plurality of DC/DC change-over circuits 2 respectively, the output of a plurality of DC/DC change-over circuits 2 is electrically connected with a plurality of DC/DC voltage output ends of housing 5, and a plurality of DC/DC voltage output end electricity are not altogether.Rectification circuit 3 is bridge rectifiers, and the light-emitting diode number of load circuit 8 serial connections of bridge rectifier is determined according to DC/DC output current and voltage.
Claims (5)
1. the method for designing of an ac-dc converter circuit, it is characterized in that: rectification circuit and DC/DC change-over circuit are arranged in housing, the load circuit of rectification circuit is serially connected with current-limiting resistance R0 and light emitting diode string, the silicon photocell group is arranged on the light emission direction of light emitting diode string, the voltage output end of silicon photocell group is electrically connected with the input of DC/DC change-over circuit, and the output of DC/DC change-over circuit is electrically connected with the DC/DC voltage output end of housing.
2. the method for designing of a kind of ac-dc converter circuit according to claim 1 is characterized in that: the light emitting diode string number of the load circuit serial connection of described rectification circuit is according to the output current and the voltage parameter decision of DC/DC change-over circuit.
3. the method for designing of a kind of ac-dc converter circuit according to claim 1, it is characterized in that: the rectifier diode of described rectification circuit is a light-emitting diode.
4. the method for designing of a kind of ac-dc converter circuit according to claim 1, it is characterized in that: described rectification circuit is bridge rectifier or semibridge system rectification circuit.
5. the method for designing of a kind of ac-dc converter circuit according to claim 1, it is characterized in that: described silicon photocell component becomes many groups, being divided into many group silicon photocell groups is electrically connected with the input of a plurality of DC/DC change-over circuits respectively, the output of a plurality of DC/DC change-over circuits is electrically connected with a plurality of DC/DC voltage output ends of housing, and a plurality of DC/DC voltage output ends are not altogether or not altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010582637 CN101997431A (en) | 2010-12-10 | 2010-12-10 | Design method of alternating current/direct current conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010582637 CN101997431A (en) | 2010-12-10 | 2010-12-10 | Design method of alternating current/direct current conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101997431A true CN101997431A (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010582637 Pending CN101997431A (en) | 2010-12-10 | 2010-12-10 | Design method of alternating current/direct current conversion circuit |
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| CN (1) | CN101997431A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013159693A1 (en) * | 2012-04-24 | 2013-10-31 | Lei Guo | Group iii-v semiconductor dc transformer and method for forming same |
| CN105429444A (en) * | 2015-11-20 | 2016-03-23 | 芜湖锐芯电子科技有限公司 | Alternating-current and direct-current automatic conversion circuit |
-
2010
- 2010-12-10 CN CN 201010582637 patent/CN101997431A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013159693A1 (en) * | 2012-04-24 | 2013-10-31 | Lei Guo | Group iii-v semiconductor dc transformer and method for forming same |
| CN105429444A (en) * | 2015-11-20 | 2016-03-23 | 芜湖锐芯电子科技有限公司 | Alternating-current and direct-current automatic conversion circuit |
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Application publication date: 20110330 |