CN107708260A - It is a kind of that the circuit at DC low-voltage end is changed by alternating current interval break-make number - Google Patents
It is a kind of that the circuit at DC low-voltage end is changed by alternating current interval break-make number Download PDFInfo
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- CN107708260A CN107708260A CN201711029529.6A CN201711029529A CN107708260A CN 107708260 A CN107708260 A CN 107708260A CN 201711029529 A CN201711029529 A CN 201711029529A CN 107708260 A CN107708260 A CN 107708260A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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Abstract
The circuit at DC low-voltage end is changed by alternating current interval break-make number the invention discloses a kind of, it includes 220V AC voltage and is converted into DC voltage circuit, the filtering of π types and peak absorbing circuit, secondary ac-dc conversion and decompression rectifier filter circuit, electronic switch, MCU control circuit, pulse-width modulation circuit；220V AC voltage is converted into DC voltage circuit, the filtering of π types and peak absorbing circuit electric connection, secondary ac-dc conversion and decompression rectifier filter circuit and is sequentially connected electrically；MCU control circuit is filtered with π types and peak absorbing circuit is electrically connected with, and pulse-width modulation circuit electrically connects with MCU control circuit；Output end includes a cathode output end, two cathode output ends, and each cathode output end is electrically connected an electronic switch.Designed by foregoing circuit, the present invention has modern design and can realize the advantages of being combined direct voltage output.
Description
Technical field
The present invention relates to electronic technology field, more particularly to one kind to change DC low-voltage by alternating current interval break-make number
The circuit at end.
Background technology
In the prior art, such as applied to control circuit in LED etc., generally require civil power 220V alternating current
It is converted into the voltage dc of stable output.
In the prior art, existing change-over circuit is only capable of realizing a kind of direct voltage output；For requiring illumination condition
For the LED of change, foregoing circuit structure is difficult to be applicable.
The content of the invention
The circuit at DC low-voltage end is changed by alternating current interval break-make number it is an object of the invention to provide a kind of, should
Changed the circuit design at DC low-voltage end novelty by alternating current interval break-make number and any combination DC voltage can be realized
Output.
To reach above-mentioned purpose, the present invention is achieved through the following technical solutions.
It is a kind of that the circuit at DC low-voltage end is changed by alternating current interval break-make number, include 220V AC voltage conversion
Into DC voltage circuit, the filtering of π types and peak absorbing circuit, secondary ac-dc conversion and decompression rectifier filter circuit, electronic cutting
Pass, MCU control circuit, pulse-width modulation circuit, output end；
220V AC voltage is converted into DC voltage circuit, the filtering of π types and peak absorbing circuit electric connection, secondary alternating current-direct current and become
Change and decompression rectifier filter circuit is sequentially connected electrically；
MCU control circuit is filtered with π types and peak absorbing circuit is electrically connected with, and pulse-width modulation circuit is electrically connected with MCU control circuit
Connect；
Output end includes a cathode output end, two cathode output ends, and each cathode output end is electrically connected an electronic switch,
Cathode output end and each electronic switch are electric with pulse-width modulation circuit, secondary ac-dc conversion and decompression rectifier filter circuit respectively
Connection.
Wherein, the π types filtering and peak absorbing circuit are made up of π types filter circuit, peak absorbing circuit.
Wherein, the secondary ac-dc conversion and decompression rectifier filter circuit are whole by secondary ac-dc conversion circuit, decompression
Flow filter circuit composition.
Beneficial effects of the present invention are：One kind of the present invention changes DC low-voltage by alternating current interval break-make number
The circuit at end, it includes 220V AC voltage and is converted into DC voltage circuit, the filtering of π types and peak absorbing circuit, secondary friendship
DC converting and decompression rectifier filter circuit, electronic switch, MCU control circuit, pulse-width modulation circuit, output end；220V is exchanged
Voltage conversion is filtered into DC voltage circuit, π types and peak absorbing circuit electric connection, secondary ac-dc conversion and step-down rectifier
Filter circuit is sequentially connected electrically；MCU control circuit and π types are filtered and peak absorbing circuit is electrically connected with, pulse-width modulation circuit with
MCU control circuit electrically connects；Output end includes a cathode output end, two cathode output ends, and each cathode output end is electric respectively
Connect an electronic switch, cathode output end and each electronic switch respectively with pulse-width modulation circuit, secondary ac-dc conversion and drop
Press current rectifying and wave filtering circuit electrical connection.Designed by foregoing circuit, the present invention has novel in design and can realize that any combination is straight
The advantages of flowing voltage output.
Brief description of the drawings
The present invention is further detailed below with accompanying drawing, but the embodiment in accompanying drawing is not formed to this hair
Bright any restrictions.
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the circuit structure diagram of the present invention.
Embodiment
With reference to specific embodiment, the present invention will be described.
As depicted in figs. 1 and 2, it is a kind of that the circuit at DC low-voltage end is changed by alternating current interval break-make number, include
220V AC voltage is converted into DC voltage circuit, the filtering of π types and peak absorbing circuit, secondary ac-dc conversion and step-down rectifier
Filter circuit, electronic switch, MCU control circuit, pulse-width modulation circuit.
Further, 220V AC voltage is converted into DC voltage circuit, π types filter and peak absorbing circuit electrically connects
Connect, secondary ac-dc conversion and decompression rectifier filter circuit are sequentially connected electrically.
Further, MCU control circuit and π types are filtered and peak absorbing circuit is electrically connected with, pulse-width modulation circuit with
MCU control circuit electrically connects.
Wherein, output end includes a cathode output end, two cathode output ends, and each cathode output end is electrically connected one
Electronic switch, cathode output end and each electronic switch respectively with pulse-width modulation circuit, secondary ac-dc conversion and step-down rectifier
Filter circuit electrically connects.
It need to be explained further, the π types filtering and peak absorbing circuit are made up of π types filter circuit, peak absorbing circuit.
In addition, the secondary ac-dc conversion and decompression rectifier filter circuit are whole by secondary ac-dc conversion circuit, decompression
Flow filter circuit composition.
The present invention can control the on off operating mode of corresponding cathode output end by electronic switch, wherein, electronic switch
For triode switch.In the course of work of the present invention, any one cathode output end can be combined with cathode output end and
Realize direct voltage output.
From the above situation, it can be seen that, by foregoing circuit structure design, the present invention, which has modern design and can realized, to be appointed
The advantages of meaning combination direct voltage output.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, there will be changes, this specification content should not be construed as to the present invention in specific embodiments and applications
Limitation.
Claims (3)
1. a kind of change the circuit at DC low-voltage end by alternating current interval break-make number, it is characterised in that：Include 220V friendships
Voltage conversion is flowed into DC voltage circuit, the filtering of π types and peak absorbing circuit, secondary ac-dc conversion and step-down rectifier filtered electrical
Road, electronic switch, MCU control circuit, pulse-width modulation circuit, output end；
220V AC voltage is converted into DC voltage circuit, the filtering of π types and peak absorbing circuit electric connection, secondary alternating current-direct current and become
Change and decompression rectifier filter circuit is sequentially connected electrically；
MCU control circuit is filtered with π types and peak absorbing circuit is electrically connected with, and pulse-width modulation circuit is electrically connected with MCU control circuit
Connect；
Output end includes a cathode output end, two cathode output ends, and each cathode output end is electrically connected an electronic switch,
Cathode output end and each electronic switch are electric with pulse-width modulation circuit, secondary ac-dc conversion and decompression rectifier filter circuit respectively
Connection.
2. it is according to claim 1 it is a kind of the circuit at DC low-voltage end is changed by alternating current interval break-make number, it is special
Sign is：The π types filtering and peak absorbing circuit are made up of π types filter circuit, peak absorbing circuit.
3. it is according to claim 1 it is a kind of the circuit at DC low-voltage end is changed by alternating current interval break-make number, it is special
Sign is：The secondary ac-dc conversion and decompression rectifier filter circuit are filtered by secondary ac-dc conversion circuit, step-down rectifier
Circuit forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711029529.6A CN107708260B (en) | 2017-10-30 | 2017-10-30 | A kind of circuit changing DC low-voltage end by alternating current interval on-off number |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711029529.6A CN107708260B (en) | 2017-10-30 | 2017-10-30 | A kind of circuit changing DC low-voltage end by alternating current interval on-off number |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107708260A true CN107708260A (en) | 2018-02-16 |
| CN107708260B CN107708260B (en) | 2019-02-19 |
Family
ID=61176497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711029529.6A Active CN107708260B (en) | 2017-10-30 | 2017-10-30 | A kind of circuit changing DC low-voltage end by alternating current interval on-off number |
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| Country | Link |
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| CN (1) | CN107708260B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202142003U (en) * | 2011-08-05 | 2012-02-08 | 深圳市力可普尔电子有限公司 | Laptop power adapter |
| CN102386661A (en) * | 2011-12-07 | 2012-03-21 | 中国人民解放军总装备部军械技术研究所 | Portable electrifying, charging and discharging equipment for photoelectric device |
| CN104022661A (en) * | 2014-06-11 | 2014-09-03 | 合肥工业大学 | Switching power supply for AC/DC-DC self-adaptive instrument within ultra-wide voltage input range |
| CN204350367U (en) * | 2014-12-11 | 2015-05-20 | 深圳市固特亮照明有限公司 | Radio frequency light modulation LED power supply |
| KR101708400B1 (en) * | 2016-07-18 | 2017-02-20 | 엘이디라이팅 주식회사 | A LED lamp for multistage illumination by detecting the power-off |
-
2017
- 2017-10-30 CN CN201711029529.6A patent/CN107708260B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202142003U (en) * | 2011-08-05 | 2012-02-08 | 深圳市力可普尔电子有限公司 | Laptop power adapter |
| CN102386661A (en) * | 2011-12-07 | 2012-03-21 | 中国人民解放军总装备部军械技术研究所 | Portable electrifying, charging and discharging equipment for photoelectric device |
| CN104022661A (en) * | 2014-06-11 | 2014-09-03 | 合肥工业大学 | Switching power supply for AC/DC-DC self-adaptive instrument within ultra-wide voltage input range |
| CN204350367U (en) * | 2014-12-11 | 2015-05-20 | 深圳市固特亮照明有限公司 | Radio frequency light modulation LED power supply |
| KR101708400B1 (en) * | 2016-07-18 | 2017-02-20 | 엘이디라이팅 주식회사 | A LED lamp for multistage illumination by detecting the power-off |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107708260B (en) | 2019-02-19 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Feng Inventor after: Huang Lina Inventor before: Xu Feng |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |