CN105262350A - Simple power supply circuit and test power supply - Google Patents
Simple power supply circuit and test power supply Download PDFInfo
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- CN105262350A CN105262350A CN201510708247.3A CN201510708247A CN105262350A CN 105262350 A CN105262350 A CN 105262350A CN 201510708247 A CN201510708247 A CN 201510708247A CN 105262350 A CN105262350 A CN 105262350A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The present invention is applicable to the field of power and provides a simple power supply circuit and a test power supply which are used for converting the alternating current provided by an AC power supply into direct current and outputting the direct current to a DC load. The simple power supply circuit comprises a transformer whose primary coil is connected to the live line and zero line of the AC power supply, an AC and DC conversion module which is connected to the secondary coil of the transformer to convert the alternating current outputted by the transformer into direct current and output the direct current, and a voltage adjustment module. The positive input end and the negative input end of the voltage adjustment module are correspondingly connected to the positive output end and the negative output end of the AC and DC conversion module, and the positive output end and the negative output end of the voltage adjustment module are correspondingly connected to the DC load and the ground so as to adjust the voltage of the direct current and output the direct current to the DC load. According to the simple power supply circuit and the test power supply, the AC and DC conversion can be realized only through the transformer, the AC and DC conversion module and the voltage adjustment module, the structure is simple, the cost is low, and the simple power supply circuit and the test power supply are easy to realize and widely promote.
Description
Technical field
The invention belongs to field of power supplies, particularly relate to a kind of simple and easy power circuit and testing power supply.
Background technology
Electronic product needed to test before dispatching from the factory, test normally just can qualifiedly be dispatched from the factory, most electronic product uses the DC power supply that 12V, 5V or 3.3V etc. are conventional, and what some electronic product used is then the non-common DC power supply such as 13V, 11V or 9V.
But at present on the market for providing the testing power supply of non-common DC power supply, most circuit structure is complicated, with high costs, and be frequently used for easily damaging after test electronic product.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of simple and easy power circuit and testing power supply, be intended to solve before on the market for providing the testing power supply of non-common DC power supply, most circuit structure is complicated, with high costs, and is frequently being used for holding flimsy problem after test electronic product.
The embodiment of the present invention is achieved in that a kind of simple and easy power circuit, and the alternating current for AC power being provided is converted to direct current and exports to DC load, and described simple and easy power circuit comprises:
The transformer that primary coil is connected with live wire and the zero line of AC power;
Be connected with the secondary coil of described transformer, convert direct current to the alternating current exported by described transformer and the AC-DC conversion module exported;
Positive input terminal and negative input end are respectively with the positive output end of described AC-DC conversion module with negative output terminal is corresponding is connected, positive output end and negative output terminal are corresponding with ground with described DC load to be respectively connected, to carry out voltage-regulation to described direct current and to export to the Voltage Regulator Module of described DC load.
Preferably, described AC-DC conversion module comprises the rectifier bridge be made up of four rectifier diodes, two ac input ends of described rectifier bridge are connected respectively the two ends of the secondary coil of described transformer, and the negative input end that direct current output plus terminal connects the positive input terminal of described Voltage Regulator Module, direct current exports negative terminal and described Voltage Regulator Module of described rectifier bridge is connected to ground altogether.
Preferably, described AC-DC conversion module also comprises the commutation capacitor E1 between direct current output plus terminal and direct current output negative terminal being connected in parallel on described rectifier bridge.
Preferably, described Voltage Regulator Module comprises voltage-regulation chip U1, feedback resistance R1, divider resistance R2 and potentiometer R3, wherein, the voltage input end of voltage-regulation chip U1 and one of potentiometer R3 not moved end connect the positive input terminal forming described Voltage Regulator Module altogether, the voltage output end of voltage-regulation chip U1 and one end of feedback resistance R1 connect the positive output end forming described Voltage Regulator Module altogether, another not moved end and its moving contact exit of potentiometer R3, the voltage-regulation end of voltage-regulation chip U1, the other end of feedback resistance R1 and one end of divider resistance R2 connect altogether, the other end of divider resistance R2 is negative input end and the negative output terminal of described Voltage Regulator Module.
Preferably, described Voltage Regulator Module also comprises the filter capacitor E2 between one end and the other end of described divider resistance R2 being connected to described feedback resistance R1.
Preferably, described Voltage Regulator Module also comprises the filter capacitor E3 between the other end and the other end of described divider resistance R2 being connected to described feedback resistance R1.
Preferably, described voltage-regulation chip U1 is LM317 type voltage stabilizing chip.
Preferably, described AC power is civil power, and described electric loading is electronic product to be tested.
The embodiment of the present invention also provides a kind of testing power supply, comprises the simple and easy power circuit as described in front any one.
Compared with prior art, beneficial effect is the embodiment of the present invention: simple and easy power circuit provided by the invention is only made up of transformer, AC-DC conversion module and Voltage Regulator Module, and structure is simple, with low cost, is easy to realize and extensively promote; AC-DC conversion is carried out by rectifier bridge, with low cost and circuit structure is simple; By at rectifier bridge two ends commutation capacitor E1, for compensating the reactive power of circuit, increase the stability of voltage in circuit; Regulated by the voltage of Voltage Regulator Module to circuit be made up of voltage-regulation chip U1, feedback resistance R1, divider resistance R2 and potentiometer R3, the magnitude of voltage that resistance by means of only regulator potentiometer just can realize exporting to by the DC power supply of electric loading regulates, make its meet with electric loading need load voltage value, circuit structure is simple, with low cost, be easy to control; Effectively can reduce AC ripple ripple coefficient in circuit by arranging filter capacitor E2 and filter capacitor E3, making described Voltage Regulator Module realize efficiently level and smooth direct current and exporting, increasing the galvanic stability that described simple and easy power circuit exports.
Accompanying drawing explanation
Fig. 1 is the basic structure block diagram of the simple and easy power circuit that the embodiment of the present invention provides;
Fig. 2 is the circuit theory diagrams of the simple and easy power circuit that the preferred embodiments of the present invention provide.
Fig. 3 is the simple and easy power circuit that provides of the embodiment of the present invention by test fixture is structural representation when electronic product to be tested provides direct current;
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 is the basic structure block diagram of the simple and easy power circuit that the embodiment of the present invention provides.
As shown in Figure 1, the simple and easy power circuit 100 that the embodiment of the present invention provides, the alternating current for AC power 201 being provided is converted to direct current and exports to DC load 301, and described simple and easy power circuit 100 comprises:
The transformer 10 that primary coil is connected with live wire L and the zero line N of AC power 201;
Be connected with the secondary coil of described transformer 10, convert direct current to the alternating current exported by described transformer 10 and the AC-DC conversion module 20 exported;
Positive input terminal and negative input end are respectively with the positive output end of described AC-DC conversion module 20 with negative output terminal is corresponding is connected, positive output end and negative output terminal respectively with described DC load 301 with ground is corresponding is connected, to carry out voltage-regulation to described direct current and to export to the Voltage Regulator Module 30 of described DC load 301.
In a preferred embodiment, described AC power 201 for rated output voltage be the civil power of 220V, DC load 301 is electronic product to be measured.
In a preferred embodiment, described AC-DC conversion module 20 is rectifier bridge, and described Voltage Regulator Module 30 is by voltage-regulation chip and the potentiometer regulating the output voltage of described voltage-regulation chip by changing resistance.
Described simple and easy power circuit is only made up of transformer, AC-DC conversion module and Voltage Regulator Module, and structure is simple, with low cost, is easy to realize and extensively promote
Fig. 2 is the circuit theory diagrams of the simple and easy power circuit that the preferred embodiments of the present invention provide.
In simple and easy power circuit 100 as shown in Figure 2, AC-DC conversion module 20 comprises the rectifier bridge be made up of four rectifier diodes (rectifier diode D1, rectifier diode D2, rectifier diode D3 and rectifier diode D4), two ac input ends of described rectifier bridge are connected respectively the two ends of the secondary coil of described transformer 10, and the negative input end that direct current output plus terminal connects the positive input terminal of described Voltage Regulator Module 30, direct current exports negative terminal and described Voltage Regulator Module 30 of described rectifier bridge is connected to ground altogether.
In actual applications, described rectifier bridge equivalence can replace to other rectifying devices.
In the preferred embodiment, described AC-DC conversion module 20 also comprises the commutation capacitor E1 between direct current output plus terminal and direct current output negative terminal being connected in parallel on described rectifier bridge.
By at rectifier bridge two ends commutation capacitor E1, for compensating the reactive power of circuit, increase the stability of voltage in circuit.
Described Voltage Regulator Module 30 comprises voltage-regulation chip U1, feedback resistance R1, divider resistance R2 and potentiometer R3, wherein, the voltage input end VIN of voltage-regulation chip U1 and one of potentiometer R3 not moved end connect the positive input terminal forming described Voltage Regulator Module 30 altogether, the voltage output end VOUT of voltage-regulation chip U1 and one end of feedback resistance R1 meet the positive output end Vout forming described Voltage Regulator Module 30 altogether, another not moved end and its moving contact exit of potentiometer R3, the voltage-regulation end ADJ of voltage-regulation chip U1, the other end of feedback resistance R1 and one end of divider resistance R2 connect altogether, the other end of divider resistance R2 is negative input end and the negative output terminal of described Voltage Regulator Module 30.
In the preferred embodiment, described Voltage Regulator Module 30 also comprises the filter capacitor E2 between one end and the other end of described divider resistance R2 being connected to described feedback resistance R1.
In the preferred embodiment, described Voltage Regulator Module 30 also comprises the filter capacitor E3 between the other end and the other end of described divider resistance R2 being connected to described feedback resistance R1.
In a particular application, described voltage-regulation chip U1 can select LM317 type voltage stabilizing chip.
The embodiment of the present invention also provides a kind of testing power supply device, comprises described simple and easy power circuit 100.
In a preferred embodiment, when AC power selects 220V civil power, by the simple and easy power circuit 100 shown in Fig. 2 for electronic product to be tested non-common 13V, 11V or 9V DC power supply is provided time, in figure, the parameter of each device is respectively: four rectifier diode D1 ~ D7 in rectifier bridge average rectified current is 1A, the highest peak-inverse voltage is 1000V; Rated voltage≤the 35V of commutation capacitor E1, capacitance≤1000uF; Voltage-regulation chip U1 is LM317 type voltage stabilizing chip; Feedback resistance R1 is 1206 type encapsulation, resistance is 240R, i.e. 24 Ω; Nominal resistance >=the 1K of divider resistance R2; Nominal resistance >=the 1K of potentiometer R3; Rated voltage≤the 35V of filter capacitor E2, capacitance≤1000uF; Rated voltage≤the 35V of filter capacitor E2, capacitance≤1000uF.
In actual use, only need regulator potentiometer R3, change its resistance, the galvanic voltage-regulation that described simple and easy power circuit 100 is exported can be realized, simple and convenient being easy to operates, and can provide non-common DC power supply owing to forming simple and easy power circuit 100, and its circuit structure is simple, in circuit, each components and parts is with low cost, is therefore suitable as very much the detection power supply of electronic product to be measured.
The embodiment of the present invention also provides a kind of testing power supply, comprises described simple and easy power circuit 100.
Fig. 3 is the simple and easy power circuit that provides of the embodiment of the present invention by test fixture is structural representation when electronic product to be tested provides direct current.
As shown in Figure 3, simple and easy power circuit 100, two power input is connected with the live wire L of civil power 200 and zero line N respectively, for input AC electricity and be converted to direct current, direct current is exported to power input VCC and the earth terminal GND2 of electronic product 300 to be tested by its positive output end Vout and negative output terminal GND1 by test fixture 400.
Simple and easy power circuit 100 by test fixture 400 for electronic product 300 to be tested provides galvanic operating procedure specific as follows:
Simple and easy power circuit 100 is connected with civil power 200;
The voltage between the positive output end Vout of simple and easy power circuit 100 and negative output terminal GND1 is tested with voltmeter;
According to electronic product 300 to be tested need load voltage value, the resistance of regulator potentiometer R3, the magnitude of voltage that voltmeter is recorded and electronic product 300 to be tested need load voltage value identical;
The simple and easy power circuit 100 completed after magnitude of voltage regulates is connected with electronic product 300 to be tested by test fixture 400;
Start to carry out the testing procedure to electronic product 300 to be measured.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a simple and easy power circuit, the alternating current for AC power being provided is converted to direct current and exports to DC load, it is characterized in that, described simple and easy power circuit comprises:
The transformer that primary coil is connected with live wire and the zero line of AC power;
Be connected with the secondary coil of described transformer, convert direct current to the alternating current exported by described transformer and the AC-DC conversion module exported;
Positive input terminal and negative input end are respectively with the positive output end of described AC-DC conversion module with negative output terminal is corresponding is connected, positive output end and negative output terminal are corresponding with ground with described DC load to be respectively connected, to carry out voltage-regulation to described direct current and to export to the Voltage Regulator Module of described DC load.
2. simple and easy power circuit as claimed in claim 1, it is characterized in that, described AC-DC conversion module comprises the rectifier bridge be made up of four rectifier diodes, two ac input ends of described rectifier bridge are connected respectively the two ends of the secondary coil of described transformer, and the negative input end that direct current output plus terminal connects the positive input terminal of described Voltage Regulator Module, direct current exports negative terminal and described Voltage Regulator Module of described rectifier bridge is connected to ground altogether.
3. simple and easy power circuit as claimed in claim 2, is characterized in that, described AC-DC conversion module also comprises the commutation capacitor E1 between direct current output plus terminal and direct current output negative terminal being connected in parallel on described rectifier bridge.
4. simple and easy power circuit as claimed in claim 1, it is characterized in that, described Voltage Regulator Module comprises voltage-regulation chip U1, feedback resistance R1, divider resistance R2 and potentiometer R3, wherein, the voltage input end of voltage-regulation chip U1 and one of potentiometer R3 not moved end connect the positive input terminal forming described Voltage Regulator Module altogether, the voltage output end of voltage-regulation chip U1 and one end of feedback resistance R1 connect the positive output end forming described Voltage Regulator Module altogether, another not moved end and its moving contact exit of potentiometer R3, the voltage-regulation end of voltage-regulation chip U1, the other end of feedback resistance R1 and one end of divider resistance R2 connect altogether, the other end of divider resistance R2 is negative input end and the negative output terminal of described Voltage Regulator Module.
5. simple and easy power circuit as claimed in claim 4, is characterized in that, described Voltage Regulator Module also comprises the filter capacitor E2 between one end and the other end of described divider resistance R2 being connected to described feedback resistance R1.
6. the simple and easy power circuit as described in claim 4 or 5, is characterized in that, described Voltage Regulator Module also comprises the filter capacitor E3 between the other end and the other end of described divider resistance R2 being connected to described feedback resistance R1.
7. simple and easy power circuit as claimed in claim 4, is characterized in that, described voltage-regulation chip U1 is LM317 type voltage stabilizing chip.
8. simple and easy power circuit as claimed in claim 1, is characterized in that, described AC power is civil power, and described electric loading is electronic product to be tested.
9. a testing power supply, is characterized in that, comprises the simple and easy power circuit as described in any one of claim 1 ~ 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708247.3A CN105262350A (en) | 2015-10-27 | 2015-10-27 | Simple power supply circuit and test power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708247.3A CN105262350A (en) | 2015-10-27 | 2015-10-27 | Simple power supply circuit and test power supply |
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| Publication Number | Publication Date |
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| CN105262350A true CN105262350A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510708247.3A Pending CN105262350A (en) | 2015-10-27 | 2015-10-27 | Simple power supply circuit and test power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794908A (en) * | 2019-10-10 | 2020-02-14 | 天津大学 | Voltage source for bias superconducting nanowire single-photon detector |
| CN113030773A (en) * | 2019-07-30 | 2021-06-25 | 深圳市泛海三江电子股份有限公司 | Automatic test method for testing stability of output voltage of fire power supply |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213624U (en) * | 1987-09-19 | 1988-07-20 | 中国科学院广州电子技术研究所 | High voltage continually adjustable electric resource |
| CN103887995A (en) * | 2014-04-19 | 2014-06-25 | 张新安 | High-performance adjustable direct-current stabilized power source |
| CN103887994A (en) * | 2014-04-09 | 2014-06-25 | 张新安 | Simple and efficient direct-current voltage-stabilized source for laboratory |
| CN204167887U (en) * | 2014-08-21 | 2015-02-18 | 江苏永诚科教设备有限公司 | Power supply for teaching |
-
2015
- 2015-10-27 CN CN201510708247.3A patent/CN105262350A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213624U (en) * | 1987-09-19 | 1988-07-20 | 中国科学院广州电子技术研究所 | High voltage continually adjustable electric resource |
| CN103887994A (en) * | 2014-04-09 | 2014-06-25 | 张新安 | Simple and efficient direct-current voltage-stabilized source for laboratory |
| CN103887995A (en) * | 2014-04-19 | 2014-06-25 | 张新安 | High-performance adjustable direct-current stabilized power source |
| CN204167887U (en) * | 2014-08-21 | 2015-02-18 | 江苏永诚科教设备有限公司 | Power supply for teaching |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030773A (en) * | 2019-07-30 | 2021-06-25 | 深圳市泛海三江电子股份有限公司 | Automatic test method for testing stability of output voltage of fire power supply |
| CN110794908A (en) * | 2019-10-10 | 2020-02-14 | 天津大学 | Voltage source for bias superconducting nanowire single-photon detector |
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Address after: 518000 Guangdong province Shenzhen Guangming Street Yu Tang root Jade Road and Nanming Road Interchange Huahong ICT Industrial Park Building 4 floor 1-6 Applicant after: Shenzhen Zhenbang intelligent Polytron Technologies Inc Address before: 518000, Guangdong, Nanshan District, Taoyuan street, Longjing second industrial zone, A building, 2 floor, A building, 3 building, north, B building, 3 floor, B building, 6 floor, building C, building 3, Shenzhen Applicant before: SHENZHEN ZHENBANG INTELLIGENT TECHNOLOGY CO., LTD. |
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Application publication date: 20160120 |
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