CN201893715U - Low-current output type AC/DC conversion circuit - Google Patents
Low-current output type AC/DC conversion circuit Download PDFInfo
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- CN201893715U CN201893715U CN 201020652746 CN201020652746U CN201893715U CN 201893715 U CN201893715 U CN 201893715U CN 201020652746 CN201020652746 CN 201020652746 CN 201020652746 U CN201020652746 U CN 201020652746U CN 201893715 U CN201893715 U CN 201893715U
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Abstract
The utility model relates to a direct current power supply, in particular to a low-current output type AC/DC conversion circuit without converting 220V alternating current into direct current by using a transformer. The low-current output type AC/DC conversion circuit is characterized in that a rectification circuit and a DC/DC conversion circuit are arranged in a shell, a load circuit of the rectification circuit is connected with a current limiting resistor R0 and a light emitting diode string in series, a silicon photocell set is arranged in the light emitting direction of the light emitting diode string, the voltage output end of the silicon photocell set is electrically connected with the input end of the DC/DC conversion circuit, the output end of the DC/DC conversion circuit is electrically connected with the DC/DC voltage output end of the shell, and a commutation diode of the rectification circuit is a light emitting diode. The utility model provides the low-current output type AC/DC conversion circuit without converting the 220V alternating current into the direct current by the transformer.
Description
Technical field
The utility model relates to a kind of DC power supply, particularly a kind ofly converts the 220V alternating current to galvanic little current-output type 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.
The utility model content
The purpose of this utility model provides a kind of transformer that do not need and converts the 220V alternating current to galvanic a kind of little current-output type ac-dc converter circuit.
The purpose of this utility model is to realize like this, a kind of little current-output type 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 rectifier diode of rectification circuit is a light-emitting diode.
Described silicon photocell component becomes many groups, is divided into many group silicon photocell groups and 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.
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.
The utility model has the advantages that: 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 utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the utility model embodiment 1 structural representation;
Fig. 3 is the utility model embodiment 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, 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 (4)
1. one kind little current-output type 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 rectifier diode of rectification circuit is a light-emitting diode.
2. a kind of little current-output type 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. a kind of little current-output type ac-dc converter circuit according to claim 1 is characterized in that: described rectification circuit is bridge rectifier or semibridge system rectification circuit.
4. a kind of little current-output type ac-dc converter circuit according to claim 1 is characterized in that: described silicon photocell component becomes many groups, is divided into many group silicon photocell groups and 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020652746 CN201893715U (en) | 2010-12-10 | 2010-12-10 | Low-current output type AC/DC conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020652746 CN201893715U (en) | 2010-12-10 | 2010-12-10 | Low-current output type AC/DC conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893715U true CN201893715U (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020652746 Expired - Fee Related CN201893715U (en) | 2010-12-10 | 2010-12-10 | Low-current output type AC/DC conversion circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN201893715U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569488A (en) * | 2012-01-20 | 2012-07-11 | 郭磊 | Semiconductor direct current transformer |
| WO2013067967A1 (en) * | 2011-11-10 | 2013-05-16 | Lei Guo | Semiconductor electricity converter |
| US8785950B2 (en) | 2011-11-10 | 2014-07-22 | Lei Guo | Chip with semiconductor electricity conversion structure |
| US8809877B2 (en) | 2011-11-10 | 2014-08-19 | Lei Guo | Semiconductor voltage transformation structure |
-
2010
- 2010-12-10 CN CN 201020652746 patent/CN201893715U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013067967A1 (en) * | 2011-11-10 | 2013-05-16 | Lei Guo | Semiconductor electricity converter |
| US8785950B2 (en) | 2011-11-10 | 2014-07-22 | Lei Guo | Chip with semiconductor electricity conversion structure |
| US8809877B2 (en) | 2011-11-10 | 2014-08-19 | Lei Guo | Semiconductor voltage transformation structure |
| US8941126B2 (en) | 2011-11-10 | 2015-01-27 | Lei Guo | Semiconductor electricity converter |
| CN102569488A (en) * | 2012-01-20 | 2012-07-11 | 郭磊 | Semiconductor direct current transformer |
| CN102569488B (en) * | 2012-01-20 | 2016-01-27 | 郭磊 | A kind of semiconductor direct current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an Hengfei Electronic Technology Co., Ltd. Assignor: Xi'an Fuan Innovation Consultation Co., Ltd. Contract record no.: 2011610000122 Denomination of utility model: Design method of low-current output type AC/DC conversion circuit Granted publication date: 20110706 License type: Exclusive License Record date: 20110718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20161210 |