CN103840644A - Multi-terminal output DC stabilized power supply - Google Patents
Multi-terminal output DC stabilized power supply Download PDFInfo
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- CN103840644A CN103840644A CN201210491296.2A CN201210491296A CN103840644A CN 103840644 A CN103840644 A CN 103840644A CN 201210491296 A CN201210491296 A CN 201210491296A CN 103840644 A CN103840644 A CN 103840644A
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Abstract
A multi-terminal output DC stabilized power supply comprises a rectification filtration module, a first voltage conversion module, a second voltage conversion module, a first voltage division module and a second voltage division module. The multi-terminal output DC stabilized power supply conducts corresponding conversion through the first voltage conversion module and the second voltage conversion module and outputs a first positive voltage and a second positive voltage, meanwhile, the first voltage division module connected with the first voltage conversion module converts the first positive voltage into a first negative voltage of the corresponding size, and the second voltage division module connected with the second voltage conversion module converts the second positive voltage into a second negative voltage of the corresponding size. Hence, the multi-terminal output DC stabilized power supply can output a plurality of positive voltages and a plurality of negative voltages through the first voltage conversion module, the second voltage conversion module, the first voltage division module and the second voltage division module. The structure is simple, and manufacturing cost is low.
Description
Technical field
The present invention relates to direct-flow voltage regulation source, particularly relate to a kind of direct-flow voltage regulation source of simple, stable multiterminal output.
Background technology
Society people are enjoying the facility that electronic equipment brings greatly, but any electronic equipment has a common circuit--power circuit.Large to supercomputer, little of pocket calculating machine, all electronic equipments all must normally work under the support of power circuit.Due to the characteristic of electronic technology, electronic equipment can provide exactly continually and steadily, meet the electric energy of load request the requirement of power circuit, and all requires under normal circumstances to provide galvanic current energy.Be exactly D.C. regulated power supply and the power supply of this galvanic current energy is provided.D.C. regulated power supply occupies very consequence in power technology.Along with the development of electronic technology aspect, more and more integrated chips that need both positive and negative polarity voltage are born, and the supply of both positive and negative polarity voltage is more and more important, and traditional both positive and negative polarity voltage source is not only expensive, and structure is also very complicated.
Summary of the invention
Based on this, be necessary to provide a kind of direct-flow voltage regulation source of simple, the stable positive negative output of multiterminal.
A kind of direct-flow voltage regulation source of multiterminal output, comprise rectification filtering module, also comprise for the direct voltage of described rectification filtering module output is converted to the first voltage transformation module of the first positive voltage, for the direct voltage of described rectification filtering module output is converted to the second voltage modular converter of the second positive voltage, for described the first positive voltage is converted to corresponding size the first negative voltage the first division module and for described the second positive voltage being converted to second division module of the second negative voltage of corresponding size;
Described rectification filtering module comprises input for being connected with AC power and the output of stable output direct current;
Described the first voltage transformation module comprises the input being connected with the output of described rectification filtering module, the output and ground of output the first positive voltage;
Described the first division module comprises the input being connected with the output of described the first voltage transformation module, the output and ground of output the first negative voltage;
Described second voltage modular converter comprises the input being connected with the output of described rectification filtering module, the output and ground of output the second positive voltage;
Described the second division module comprises the input being connected with the output of described second voltage modular converter, the output and ground of output the second negative voltage.
Therein in an embodiment, described rectification filtering module comprises rectifier bridge D1 and electrochemical capacitor C2, the input of described rectifier bridge D1 is for being connected with AC power, the output of described rectifier bridge D1 is connected with the positive pole of described electrochemical capacitor C2, the minus earth of described electrochemical capacitor C2, the output that the common port of described rectifier bridge D1 and described electrochemical capacitor C2 is described rectification filtering module, the input that the input of described rectifier bridge D1 is described rectification filtering module.
In an embodiment, also comprise voltage stabilizing didoe D2 therein, the negative pole of described voltage stabilizing didoe D2 is connected with the output of described rectification filtering module, the plus earth of described voltage stabilizing didoe D2.
In an embodiment, also comprise protective tube F1 therein, described protective tube F1 is series between AC power and the input of described rectification filtering module.
In an embodiment, also comprise thermistor R1 therein, described thermistor R1 is series between AC power and the input of described rectification filtering module.
In an embodiment, also comprise filter capacitor C1 therein, described filter capacitor C1 is parallel between the both positive and negative polarity of described AC power.
In an embodiment, described the first voltage transformation module comprises power supply chip 7812, filter capacitor C3 and filter capacitor C5 therein;
Described power supply chip 7812 comprises input, output and ground; Described filter capacitor C3 is parallel between the input and earth terminal of described power supply chip 7812, and described filter capacitor C5 is parallel between the output and ground of described power supply chip 7812;
The common port of the input of described power supply chip 7812 and described filter capacitor C3 is the input of described the first voltage transformation module, the common port of the output of described power supply chip 7812 and described filter capacitor C3 is the output of described the first voltage transformation module, and the earth terminal of described power supply chip 7812 is the earth terminal of described the first voltage transformation module.
In an embodiment, described second voltage modular converter comprises power supply chip 7805, filter capacitor C4 and filter capacitor C6 therein;
Described power supply chip 7805 comprises input, output and ground; Described filter capacitor C4 is parallel between the input and earth terminal of described power supply chip 7805, and described filter capacitor C6 is parallel between the output and ground of described power supply chip 7805;
The common port of the input of described power supply chip 7805 and described filter capacitor C4 is the input of described second voltage modular converter, the common port of the output of described power supply chip 7805 and described filter capacitor C6 is the output of described second voltage modular converter, and the earth terminal of described power supply chip 7805 is the earth terminal of described second voltage modular converter.
In an embodiment, described the first division module comprises divider resistance R2 and divider resistance R3 therein;
After described divider resistance R2 and described divider resistance R3 series connection, one end near described divider resistance R2 is connected with the output of described the first voltage transformation module, one end near described divider resistance R2 is the output of described the first division module, the common end grounding of described divider resistance R2 and described divider resistance R3.
In an embodiment, described the second division module comprises divider resistance R4 and divider resistance R5 therein;
After described divider resistance R4 and described divider resistance R5 series connection, one end near described divider resistance R4 is connected with the output of described second voltage modular converter, one end near described divider resistance R5 is the output of described the second division module, the common end grounding of described divider resistance R4 and described divider resistance R5.
The D.C. regulated power supply of above-mentioned multiterminal output is by the first voltage transformation module and second voltage modular converter corresponding conversion and export the first positive voltage and the second positive voltage, the first division module simultaneously connecting with the first voltage transformation module by the first positive voltage convert the first negative voltage of corresponding size to, the second division module being connected with second voltage modular converter converts the second positive voltage to corresponding the second big or small negative voltage.Therefore, the D.C. regulated power supply of multiterminal output just can be exported multiple positive voltages and multiple negative voltage by the first voltage transformation module, second voltage modular converter, the first division module and the second division module.Not only simple in structure, and cheap.
Accompanying drawing explanation
Fig. 1 is the module map of the direct-flow voltage regulation source of multiterminal output;
Fig. 2 is the circuit theory diagrams of the direct-flow voltage regulation source of multiterminal output.
Embodiment
As shown in Figure 1, be the module map of the direct-flow voltage regulation source of multiterminal output.
A direct-flow voltage regulation source for multiterminal output, comprise rectification filtering module 101, for the direct voltage that rectification filtering module 101 is exported convert to the first voltage transformation module 103 of the first positive voltage, for the direct voltage that rectification filtering module 101 is exported convert to the second voltage modular converter 105 of the second positive voltage, for the first positive voltage is converted to corresponding size the first negative voltage the first division module 107 and for the second positive voltage being converted to second division module 109 of the second negative voltage of corresponding size.
The first voltage transformation module 103 comprises the input being connected with the output of rectification filtering module 101, the output and ground of output the first positive voltage.
Second voltage modular converter 105 modules comprise the input being connected with the output of rectification filtering module 101, the output and ground of output the second positive voltage.
The first division module 107 comprises the input being connected with the output of the first voltage transformation module 103, the output and ground of output the first negative voltage.
The second division module 109 comprises the input being connected with the output of second voltage modular converter 105, the output and ground of output the second negative voltage.
The input of the input of the first voltage transformation module 103 and second voltage modular converter 105 connects the output of rectification filtering module 101 simultaneously.The first voltage transformation module 103 and second voltage modular converter 105 are inputted galvanic current pressure simultaneously.The galvanic current that rectification filtering module 101 is exported is pressed via after the first voltage transformation module 103 and 105 conversions of second voltage modular converter, exports respectively the first positive voltage and the second positive voltage.And the first division module 107 and the second division module 109 correspondences are according to voltage divider principle, the first positive voltage is become to the first negative voltage and the output of the second negative voltage with the second positive voltage corresponding conversion.
Incorporated by reference to Fig. 2.Rectification filtering module 101 comprises rectifier bridge D1 and electrochemical capacitor C2, the input of rectifier bridge D1 is for being connected with AC power, the output of rectifier bridge D1 is connected with the positive pole of electrochemical capacitor C2, the minus earth of electrochemical capacitor C2, the common port of rectifier bridge D1 and electrochemical capacitor C2 is the output of rectification filtering module 101, and the input of rectifier bridge D1 is the input of rectification filtering module 101.
The direct-flow voltage regulation source of multiterminal output also comprises voltage stabilizing didoe D2, and the negative pole of voltage stabilizing didoe D2 is connected with the output of rectification filtering module 101, the plus earth of voltage stabilizing didoe D2.
The direct-flow voltage regulation source of multiterminal output also comprises protective tube F1, and protective tube F1 is series between AC power and the input of rectification filtering module 101.
The direct-flow voltage regulation source of multiterminal output also comprises thermistor R1, and thermistor R1 is series between AC power and the input of rectification filtering module 101.
The direct-flow voltage regulation source of multiterminal output also comprises filter capacitor C1, and filter capacitor C1 is parallel between the both positive and negative polarity of AC power.
The first voltage transformation module 103 comprises power supply chip 7812, filter capacitor C3 and filter capacitor C5.
Power supply chip 7812 comprises input, output and ground; Filter capacitor C3 is parallel between the input and earth terminal of power supply chip 7812, and filter capacitor C5 is parallel between the output and ground of power supply chip 7812.
The common port of the input of power supply chip 7812 and filter capacitor C3 is the input of the first voltage transformation module 103, the common port of the output of power supply chip 7812 and filter capacitor C3 is the output of the first voltage transformation module 103, and the earth terminal of power supply chip 7812 is the earth terminal of the first voltage transformation module 103.
Second voltage modular converter 105 comprises power supply chip 7805, filter capacitor C4 and filter capacitor C6.
Power supply chip 7805 comprises input, output and ground; Filter capacitor C4 is parallel between the input and earth terminal of power supply chip 7805, and filter capacitor C6 is parallel between the output and ground of power supply chip 7805.
The common port of the input of power supply chip 7805 and filter capacitor C4 is the input of second voltage modular converter 105, the common port of the output of power supply chip 7805 and filter capacitor C6 is the output of second voltage modular converter 105, and the earth terminal of power supply chip 7805 is the earth terminal of second voltage modular converter 105.
The first division module 107 comprises divider resistance R2 and divider resistance R3.
After divider resistance R2 and divider resistance R3 series connection, one end near divider resistance R2 is connected with the output of the first voltage transformation module 103, one end near divider resistance R2 is the output of the first division module 107, the common end grounding of divider resistance R2 and divider resistance R3.
Preferably, the resistance of divider resistance R2 and divider resistance R3 is equal, and the first negative voltage that the first division module 107 is exported equates with the magnitude of voltage of the first positive voltage.In other embodiments, by adjusting the resistance of divider resistance R2 and divider resistance R3, can adjust the first division module 107 the magnitude of voltage size of exporting the first negative voltage.
The second division module 109 comprises divider resistance R4 and divider resistance R5.
After divider resistance R4 and divider resistance R5 series connection, one end near divider resistance R4 is connected with the output of second voltage modular converter 105, one end near divider resistance R5 is the output of the second division module 109, the common end grounding of divider resistance R4 and divider resistance R5.
Preferably, the resistance of divider resistance R4 and divider resistance R5 is equal, and the second negative voltage that the second division module 109 is exported equates with the magnitude of voltage of the second positive voltage.In other embodiments, by adjusting the resistance of divider resistance R4 and divider resistance R5, can adjust the second division module 109 the magnitude of voltage size of exporting the second negative voltage.
Based on above-described embodiment, the operation principle of the direct-flow voltage regulation source of multiterminal output is as follows: AC power is via rectifier bridge D1 rectification, electrochemical capacitor C2 filtering the direct voltage by stable output after voltage stabilizing didoe D2 voltage stabilizing.Direct voltage is via the first positive voltage of the rear output of power supply chip 7812 conversion 12V, via the second positive voltage of output 5V after power supply chip 7805 conversions.The first positive voltage of 12V via divider resistance R2 and divider resistance R3 dividing potential drop after, the corresponding size of output-the first negative voltage of 12V.In like manner can obtain, the second positive voltage of 5V by divider resistance R4 and divider resistance R5 dividing potential drop after, the corresponding size of output-the second negative voltage of 5V.
In above-mentioned all embodiment, power supply chip 7812 and power supply chip 7805 can be replaced by other power supply chip.For example export power supply chip 78L05 and the power supply chip 78L12 of positive voltage.Power supply chip 78L05 is identical with the output voltage of power supply chip 7805, and power supply chip 78L12 is identical with the output voltage of power supply chip 7812.
In other embodiments, in order to obtain different output voltages, can adopt other power supply chips to replace power supply chip 7812 and power supply chip 7805, for example 7806,7808,7809,78L06,78L08 and 78L09 etc., can export the positive voltage of 6V, 8V and 9V.Corresponding, after divider resistance dividing potential drop, can export the negative voltage of corresponding size.Or adopt the power supply chip of output negative voltage to replace power supply chip 7812 and power supply chip 7805, for example, 7905,7906,7908,7909,7912,79L05,79L06,79L08,79L09 and 7912 etc.Can export-5V ,-6V ,-8V ,-9V and-voltage of 12V, corresponding, after divider resistance dividing potential drop, can export the positive voltage of corresponding size.
Output at rectification filtering module 101 can be connected to less plural power supply chip.For example, at output termination power supply chip 7805, power supply chip 7806 and the power supply chip 7812 of rectification filtering module 101, the corresponding output at each power supply chip connects divider resistance, makes to export the negative voltage of corresponding size.
The D.C. regulated power supply of above-mentioned multiterminal output is by the first voltage transformation module 103 and second voltage modular converter 105 corresponding conversion and export the first positive voltage and the second positive voltage, the first division module 107 simultaneously that connect with the first voltage transformation module 103 by the first positive voltage convert the first negative voltage of corresponding size to, the second division module 109 being connected with second voltage modular converter 105 converts the second positive voltage to corresponding the second big or small negative voltage.Therefore, the D.C. regulated power supply of multiterminal output just can be exported multiple positive voltages and multiple negative voltage by the first voltage transformation module 103, second voltage modular converter 105, the first division module 107 and the second division module 109.Not only simple in structure, and cheap.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the direct-flow voltage regulation source of a multiterminal output, comprise rectification filtering module, it is characterized in that, also comprise for the direct voltage of described rectification filtering module output is converted to the first voltage transformation module of the first positive voltage, for the direct voltage of described rectification filtering module output is converted to the second voltage modular converter of the second positive voltage, for described the first positive voltage is converted to corresponding size the first negative voltage the first division module and for described the second positive voltage being converted to second division module of the second negative voltage of corresponding size;
Described rectification filtering module comprises input for being connected with AC power and the output of stable output direct current;
Described the first voltage transformation module comprises the input being connected with the output of described rectification filtering module, the output and ground of output the first positive voltage;
Described the first division module comprises the input being connected with the output of described the first voltage transformation module, the output and ground of output the first negative voltage;
Described second voltage modular converter comprises the input being connected with the output of described rectification filtering module, the output and ground of output the second positive voltage;
Described the second division module comprises the input being connected with the output of described second voltage modular converter, the output and ground of output the second negative voltage.
2. the direct-flow voltage regulation source of multiterminal output according to claim 1, it is characterized in that, described rectification filtering module comprises rectifier bridge D1 and electrochemical capacitor C2, the input of described rectifier bridge D1 is for being connected with AC power, the output of described rectifier bridge D1 is connected with the positive pole of described electrochemical capacitor C2, the minus earth of described electrochemical capacitor C2, the output that the common port of described rectifier bridge D1 and described electrochemical capacitor C2 is described rectification filtering module, the input that the input of described rectifier bridge D1 is described rectification filtering module.
3. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, also comprise voltage stabilizing didoe D2, the negative pole of described voltage stabilizing didoe D2 is connected with the output of described rectification filtering module, the plus earth of described voltage stabilizing didoe D2.
4. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, also comprise protective tube F1, described protective tube F1 is series between AC power and the input of described rectification filtering module.
5. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, also comprise thermistor R1, described thermistor R1 is series between AC power and the input of described rectification filtering module.
6. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, also comprise filter capacitor C1, described filter capacitor C1 is parallel between the both positive and negative polarity of described AC power.
7. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, described the first voltage transformation module comprises power supply chip 7812, filter capacitor C3 and filter capacitor C5;
Described power supply chip 7812 comprises input, output and ground; Described filter capacitor C3 is parallel between the input and earth terminal of described power supply chip 7812, and described filter capacitor C5 is parallel between the output and ground of described power supply chip 7812;
The common port of the input of described power supply chip 7812 and described filter capacitor C3 is the input of described the first voltage transformation module, the common port of the output of described power supply chip 7812 and described filter capacitor C3 is the output of described the first voltage transformation module, and the earth terminal of described power supply chip 7812 is the earth terminal of described the first voltage transformation module.
8. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, described second voltage modular converter comprises power supply chip 7805, filter capacitor C4 and filter capacitor C6;
Described power supply chip 7805 comprises input, output and ground; Described filter capacitor C4 is parallel between the input and earth terminal of described power supply chip 7805, and described filter capacitor C6 is parallel between the output and ground of described power supply chip 7805;
The common port of the input of described power supply chip 7805 and described filter capacitor C4 is the input of described second voltage modular converter, the common port of the output of described power supply chip 7805 and described filter capacitor C6 is the output of described second voltage modular converter, and the earth terminal of described power supply chip 7805 is the earth terminal of described second voltage modular converter.
9. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, described the first division module comprises divider resistance R2 and divider resistance R3;
After described divider resistance R2 and described divider resistance R3 series connection, one end near described divider resistance R2 is connected with the output of described the first voltage transformation module, one end near described divider resistance R2 is the output of described the first division module, the common end grounding of described divider resistance R2 and described divider resistance R3.
10. the direct-flow voltage regulation source of multiterminal output according to claim 1, is characterized in that, described the second division module comprises divider resistance R4 and divider resistance R5;
After described divider resistance R4 and described divider resistance R5 series connection, one end near described divider resistance R4 is connected with the output of described second voltage modular converter, one end near described divider resistance R5 is the output of described the second division module, the common end grounding of described divider resistance R4 and described divider resistance R5.
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| CN201210491296.2A CN103840644B (en) | 2012-11-27 | 2012-11-27 | Multi-terminal output DC stabilized power supply |
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| CN201210491296.2A CN103840644B (en) | 2012-11-27 | 2012-11-27 | Multi-terminal output DC stabilized power supply |
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| CN103840644B CN103840644B (en) | 2017-05-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105471056A (en) * | 2016-01-04 | 2016-04-06 | 南京铁道职业技术学院 | Wireless charging apparatus and method for wireless microphone |
| CN105720836A (en) * | 2016-04-25 | 2016-06-29 | 南昌大学 | Rectifier circuit |
| CN111430181A (en) * | 2020-03-23 | 2020-07-17 | 武汉杭久电气有限公司 | Alternating current-direct current passive static inverse time limit overcurrent relay device |
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| US20090009153A1 (en) * | 2007-07-03 | 2009-01-08 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Multiple output ac/dc power adapter |
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| US20090009153A1 (en) * | 2007-07-03 | 2009-01-08 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Multiple output ac/dc power adapter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471056A (en) * | 2016-01-04 | 2016-04-06 | 南京铁道职业技术学院 | Wireless charging apparatus and method for wireless microphone |
| CN105720836A (en) * | 2016-04-25 | 2016-06-29 | 南昌大学 | Rectifier circuit |
| CN105720836B (en) * | 2016-04-25 | 2019-05-24 | 南昌大学 | A kind of rectification circuit |
| CN111430181A (en) * | 2020-03-23 | 2020-07-17 | 武汉杭久电气有限公司 | Alternating current-direct current passive static inverse time limit overcurrent relay device |
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