CN105743332A - Power source circuit - Google Patents
Power source circuit Download PDFInfo
- Publication number
- CN105743332A CN105743332A CN201610012885.6A CN201610012885A CN105743332A CN 105743332 A CN105743332 A CN 105743332A CN 201610012885 A CN201610012885 A CN 201610012885A CN 105743332 A CN105743332 A CN 105743332A
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- CN
- China
- Prior art keywords
- electric capacity
- double
- filter circuit
- throw switch
- group
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/02—Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
A power source circuit comprises an input terminal for connecting alternating current, a first alternating-current filter circuit connected with the two ends of the input terminal, a second alternating-current filter current connected with the first alternating-current filter circuit, a bridge rectifier circuit connected with the second alternating-current filter circuit, a direct-current filter circuit connected with the bridge rectifier circuit, a double-pole double-throw switch, and an output terminal connected with the double-pole double-throw switch. The direct-current filter circuit is connected with a first group of pins of the switch, and the two ends of the input terminal are connected with a second group of pins of the double-pole double-throw switch. The output terminal outputs direct current when the first group of pins of the double-pole double-throw switch is switched on, and the output terminal outputs alternating current when the second group of pins of the double-pole double-throw switch is switched on.
Description
Technical field
The present invention relates to a kind of power circuit.
Background technology
Power supply test usually needs test DC voltage value and ac voltage, during test unidirectional current, sometimes need that test DC voltage value is descending becomes big process again, existing test uses a kind of direct current transducer, during test alternating current, need again to remove joint from transducer to be inserted into AC outlet again, relatively time-consuming.
Summary of the invention
In view of the foregoing, it is necessary to a kind of switchable power circuit of alterating and direct current is provided.
nullA kind of power circuit，It is characterized in that: described power circuit includes one for connecting the input of alternating current、First ac filter circuit at one two ends connecting described input、One the second ac filter circuit connecting described first ac filter circuit、One bridge rectifier connecting described second ac filter circuit、The one DC filtering circuit connecting described bridge rectifier、One electric discharge road、Double-pole double-throw switch and one connects the outfan of described double-point double-throw switch，Described discharge circuit includes multiple resistance being connected to described DC filtering circuit two ends，The plurality of resistance respectively multiple groups，Connect between group and group，Least one set is two resistant series，Described DC filtering circuit connects one first group of pin of described double-point double-throw switch，The two ends of described input connect one second group of pin of described double-point double-throw switch，Described double-point double-throw switch is when connecting described first group of pin，Described outfan output unidirectional current，Described double-point double-throw switch connects described outfan output AC electricity during described second group of pin.Described second ac filter circuit includes one first electric capacity, two the second electric capacity, two resistance and an inductance, first end of said two the second electric capacity connects the two ends of described first electric capacity respectively, the second equal ground connection of end of said two the second electric capacity, said two resistant series is connected to the two ends of described first electric capacity, described inductance is common mode inductance, its two ends connect the two ends of described first electric capacity, additionally two ends connect described bridge rectifier, and the two ends of described first electric capacity are also connected with described first ac filter circuit.
Compared with prior art, described switch connects first group of pin or second group of pin and makes described outfan output AC electricity or unidirectional current power circuit of the present invention, simple and convenient.
Accompanying drawing explanation
Fig. 1 is the connection diagram of present pre-ferred embodiments power circuit.
Fig. 2 is the circuit connection diagram of present pre-ferred embodiments power circuit.
Main element symbol description
| Input | 100 |
| First ac filter circuit | 10 |
| Primary nodal point | 101 |
| Secondary nodal point | 103 |
| Second ac filter circuit | 20 |
| Outfan | 200 |
| 3rd node | 201 |
| Fourth node | 203 |
| Bridge rectifier | 30 |
| DC filtering circuit | 40 |
| Discharge circuit | 50 |
| Switch | 60 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1 and Fig. 2, present pre-ferred embodiments power circuit includes the input 100 of a connection alternating current, one the first ac filter circuit 10 connecting described input 100, one the second ac filter circuit 20 connecting described first ac filter circuit 10, one bridge rectifier 30 connecting described second ac filter circuit 20, the one DC filtering circuit 40 connecting described bridge rectifier 30, one discharge circuit 50 connecting described DC filtering circuit 40, the outfan 200 of one double-point double-throw switch 60 connecting described discharge circuit 50 and a described double-point double-throw switch 60 of connection.The two ends of described input 100 connect primary nodal point 101 and a secondary nodal point 103 respectively.Described primary nodal point 101 and secondary nodal point 103 connect first group of pin of described double-point double-throw switch 60.
Described first ac filter circuit 10 includes an electric capacity C1, a diode D1 and a common mode inductance L1.The two ends of described electric capacity C1, described common mode inductance L1 and described diode D1 are connected between described primary nodal point 101 and described secondary nodal point 103, the negative pole of wherein said diode D1 connects described primary nodal point 101, the positive pole of described diode D1 connects described secondary nodal point, and the other two ends of described common mode inductance L1 connect one the 3rd node 201 and a fourth node 203 respectively.In the present embodiment, the value of described electric capacity C1 is 470nF.In another embodiment, described common mode inductance L1 can be general electric capacity.
Described second ac filter circuit 20 includes an electric capacity C2, two electric capacity C3, common mode inductance L2 and two resistance R1.The two ends of described electric capacity C2 and described common mode inductance L2 are connected between described 3rd node 201 and described fourth node 203.Wherein one end of an electric capacity U3 connects described 3rd node 201, its other end ground connection.One end of another electric capacity U3 connects described fourth node 203, its other end ground connection.Said two resistance R1 connects and is connected between described 3rd node 201 and described fourth node 203.The other two ends of described common mode inductance L2 connect described bridge rectifier 30.In the present embodiment, the value of described electric capacity C2 is 470nF, and the value of described electric capacity C3 is 3.3nF, and the resistance of described resistance R1 is 332K Ω.In another embodiment, described common mode inductance L2 can be general electric capacity.
Described bridge rectifier 30 is made up of four diodes, and two inputs of described bridge rectifier 30 connect described common mode inductance L2.Two outfans (positive output end and negative output terminal) of described bridge rectifier 30 connect described DC filtering circuit 40.Described DC filtering circuit 40 includes the electric capacity C4 between two outfans being connected to described bridge rectifier 30.In the present embodiment, the value of described electric capacity C4 is 120 μ F.
Described discharge circuit 50 includes nine resistance R2, and 9 resistance R2 are divided into three groups, often group three, and three the resistance R2 often organized are connected in parallel, and the resistance R2 of three groups is connected in series in the two ends of described electric capacity C4 again.Described discharge circuit 50 connects second group of pin of described double-point double-throw switch 60.In the present embodiment, the resistance value of described resistance R2 is 10K Ω.In another embodiment, described 9 resistance R2 can replace with a resistance.
When described input 100 input AC electricity, exchange after the filtering of described first ac filter circuit 10 and described second ac filter circuit 20 then through the conversion by described bridge rectifier 30 after become unidirectional current, after the unidirectional current filtering via described DC filtering circuit 40, when described double-point double-throw switch 60 connects second group of pin, then DC power transmission extremely described outfan 200.When described double-point double-throw switch 60 connects first group of pin, then alternating current transmission extremely described outfan 200.Thus facilitating test man to carry out alternating current or galvanic test for described outfan 200.
After the dump of described input 100, described DC filtering circuit 40 can be discharged by described discharge circuit 50.
In one embodiment, it is connected an electric fuse between described second ac filter circuit 20 and described bridge rectifier 30.
It will be apparent to those skilled in the art that can make other changes accordingly according to the scheme of the invention of the present invention and being actually needed of inventive concept combination production or adjust, and these changes and adjustment all should belong to the protection domain of the claims in the present invention.
Claims (4)
- null1. a power circuit，It is characterized in that: described power circuit includes one for connecting the input of alternating current、First ac filter circuit at one two ends connecting described input、One the second ac filter circuit connecting described first ac filter circuit、One bridge rectifier connecting described second ac filter circuit、The one DC filtering circuit connecting described bridge rectifier、One electric discharge road、Double-pole double-throw switch and one connects the outfan of described double-point double-throw switch，Described discharge circuit includes multiple resistance being connected to described DC filtering circuit two ends，The plurality of resistance respectively multiple groups，Connect between group and group，Least one set is two resistant series，Described DC filtering circuit connects one first group of pin of described double-point double-throw switch，The two ends of described input connect one second group of pin of described double-point double-throw switch，Described double-point double-throw switch is when connecting described first group of pin，Described outfan output unidirectional current，Described double-point double-throw switch connects described outfan output AC electricity during described second group of pin.Described second ac filter circuit includes one first electric capacity, two the second electric capacity, two resistance and an inductance, first end of said two the second electric capacity connects the two ends of described first electric capacity respectively, the second equal ground connection of end of said two the second electric capacity, said two resistant series is connected to the two ends of described first electric capacity, described inductance is common mode inductance, its two ends connect the two ends of described first electric capacity, additionally two ends connect described bridge rectifier, and the two ends of described first electric capacity are also connected with described first ac filter circuit.
- 2. power circuit as claimed in claim 1, it is characterized in that: described first ac filter circuit includes an electric capacity, a diode and an inductance, described electric capacity and described diode are both connected between the two ends of described input, electric capacity described in described inductance connection and between described second ac filter circuit.
- 3. power circuit as claimed in claim 1, it is characterised in that: it is connected an electric fuse between described second ac filter circuit and described bridge rectifier.
- 4. power circuit as claimed in claim 1, it is characterized in that: described first ac filter circuit includes an electric capacity, a diode and an inductance, described electric capacity and described diode are both connected between the two ends of described input, electric capacity described in described inductance connection and between described second ac filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012885.6A CN105743332A (en) | 2011-12-21 | 2011-12-21 | Power source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012885.6A CN105743332A (en) | 2011-12-21 | 2011-12-21 | Power source circuit |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110432409.7A Division CN103178696B (en) | 2011-12-21 | 2011-12-21 | Power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105743332A true CN105743332A (en) | 2016-07-06 |
Family
ID=56246223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610012885.6A Pending CN105743332A (en) | 2011-12-21 | 2011-12-21 | Power source circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105743332A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2088305U (en) * | 1991-04-11 | 1991-11-06 | 甄立新 | Safety universal power supply |
| CN2122395U (en) * | 1992-05-19 | 1992-11-18 | 左孝臣 | Multifunctional electronic circuit tester |
| CN2244979Y (en) * | 1996-05-22 | 1997-01-15 | 沪东造船厂 | Generating arc controller for ac and dc electric welder |
| JP2000277286A (en) * | 1999-03-26 | 2000-10-06 | Matsushita Electric Works Ltd | Discharge lamp lighting device |
| CN2666032Y (en) * | 2003-12-24 | 2004-12-22 | 北京利德华福电气技术有限公司 | AC-DC two-way operational power supply automatic switching circuit |
| CN201388154Y (en) * | 2009-04-08 | 2010-01-20 | 武汉大学 | Power source of single-phase AC/DC coupling and decoupling networks |
| CN201528198U (en) * | 2009-09-14 | 2010-07-14 | 宝鸡市瑞通电器有限公司 | Alternating current power supply noise filter |
| CN101841242A (en) * | 2010-04-14 | 2010-09-22 | 上海明石光电科技有限公司 | Switch power supply and method for adjusting output current thereof |
| CN101842971A (en) * | 2008-12-12 | 2010-09-22 | 株式会社三社电机制作所 | Dc-dc converter circuit |
| CN101873073A (en) * | 2009-04-21 | 2010-10-27 | 冠捷投资有限公司 | AC to DC converter |
| CN201639300U (en) * | 2010-02-05 | 2010-11-17 | 深圳拓邦股份有限公司 | DC (direct current) frequency-conversion dishwasher and filter circuit thereof |
| CN201765290U (en) * | 2010-09-10 | 2011-03-16 | 安徽省电力公司芜湖供电公司 | Single-phase grounding fault location device of cable and overhead line hybrid system |
| CN102026448A (en) * | 2010-11-01 | 2011-04-20 | 王子能 | LED power circuit |
-
2011
- 2011-12-21 CN CN201610012885.6A patent/CN105743332A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2088305U (en) * | 1991-04-11 | 1991-11-06 | 甄立新 | Safety universal power supply |
| CN2122395U (en) * | 1992-05-19 | 1992-11-18 | 左孝臣 | Multifunctional electronic circuit tester |
| CN2244979Y (en) * | 1996-05-22 | 1997-01-15 | 沪东造船厂 | Generating arc controller for ac and dc electric welder |
| JP2000277286A (en) * | 1999-03-26 | 2000-10-06 | Matsushita Electric Works Ltd | Discharge lamp lighting device |
| CN2666032Y (en) * | 2003-12-24 | 2004-12-22 | 北京利德华福电气技术有限公司 | AC-DC two-way operational power supply automatic switching circuit |
| CN101842971A (en) * | 2008-12-12 | 2010-09-22 | 株式会社三社电机制作所 | Dc-dc converter circuit |
| CN201388154Y (en) * | 2009-04-08 | 2010-01-20 | 武汉大学 | Power source of single-phase AC/DC coupling and decoupling networks |
| CN101873073A (en) * | 2009-04-21 | 2010-10-27 | 冠捷投资有限公司 | AC to DC converter |
| CN201528198U (en) * | 2009-09-14 | 2010-07-14 | 宝鸡市瑞通电器有限公司 | Alternating current power supply noise filter |
| CN201639300U (en) * | 2010-02-05 | 2010-11-17 | 深圳拓邦股份有限公司 | DC (direct current) frequency-conversion dishwasher and filter circuit thereof |
| CN101841242A (en) * | 2010-04-14 | 2010-09-22 | 上海明石光电科技有限公司 | Switch power supply and method for adjusting output current thereof |
| CN201765290U (en) * | 2010-09-10 | 2011-03-16 | 安徽省电力公司芜湖供电公司 | Single-phase grounding fault location device of cable and overhead line hybrid system |
| CN102026448A (en) * | 2010-11-01 | 2011-04-20 | 王子能 | LED power circuit |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |