CN101247091A - Linear electric power with low output ripple voltage - Google Patents
Linear electric power with low output ripple voltage Download PDFInfo
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- CN101247091A CN101247091A CNA2008100352819A CN200810035281A CN101247091A CN 101247091 A CN101247091 A CN 101247091A CN A2008100352819 A CNA2008100352819 A CN A2008100352819A CN 200810035281 A CN200810035281 A CN 200810035281A CN 101247091 A CN101247091 A CN 101247091A
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- power supply
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- industrial frequency
- frequency transformer
- linear power
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Abstract
The present invention provides a linear electric power source which outputs low ripple voltage and is used for audio equipment and other equipment that has low requirement to the output ripple voltage, wherein, the linear electric power source comprises an industrial frequency transformer, a commutating wave filtering circuit, a voltage regulator circuit, an output circuit, a panel indicating board and a voltage converting switch. The signal of the power supply circuit is inputted from AC and is transferred through the industrial frequency transformer and the commutating wave filtering circuit, is transferred through the voltage stabilizer to the output circuit, and at the same time is sampled to the panel for indicating; wherein two circuits directly output AC alternating current after the voltage releasing of the industrial frequency transformer. The linear electric power source adopts two annular industrial frequency transformers which are fixed on the casing by screws, and the structure of the electric power source is compact. The linear electric power source adopts one part of paster and is a novel-designed linear electric power source.
Description
Technical field
The present invention relates to a kind of very low linear power supply of output ripple voltage that has, belong to power technique fields.
Background technology
Power supply is parts indispensable in all kinds of electric equipment products, and generally having among the equipment of being configured in is the part of product, and also having to make becomes single stand-alone product.Power supply described here is to be used in stereo set and other to the power supply on the very little equipment of output ripple voltage requirement.
Above-mentioned power supply, it is aspect the circuit structure: with basic identical on other circuit construction of electric power, i.e. Industrial Frequency Transformer, rectifying and wave-filtering, voltage stabilizing, output.The power supply product of former design of Sanji Electronic Industry Co., Ltd., Shanghai and production belongs to the product of this form basically.
At present, existing power supply generally has only single Industrial Frequency Transformer, and power supply belongs to small-power, and purposes is more single.
Summary of the invention
The object of the present invention is to provide to have the very low linear power supply of output ripple voltage, this linear power supply is the linear power supply of two ring-like formula transformer multichannel outputs, is applicable to multiple occasion use.
For achieving the above object, technical scheme of the present invention is: its power output of this linear power supply is big, applied widely, adopts two ring-like Industrial Frequency Transformers, 16 tunnel outputs, be furnished with voltage change-over switch and indicator light, whether working properlyly can improve the product range of application and understand product at any time.
In order to enhance productivity, adopted a part of surface mount elements, transformer is to be fixed on the shell with screw.
This products scheme, be input to respectively in Industrial Frequency Transformer 1 and the Industrial Frequency Transformer 2 with AC alternating current electricity, Industrial Frequency Transformer 1 output is after 1 to 6 road direct currents are directly exported in rectifying and wave-filtering and voltage stabilizing, rectifying and wave-filtering the 7 tunnel is subjected to panel conversion and adjustable control after voltage stabilizing is exported, and Industrial Frequency Transformer 1 direct step-down is simultaneously exported the 8 the tunnel and exchanged.
Industrial Frequency Transformer 2, output are after 9 to 14 road direct currents are directly exported in rectifying and wave-filtering and voltage stabilizing, and rectifying and wave-filtering the 15 tunnel is subjected to panel conversion and adjustable control after voltage stabilizing is exported, and Industrial Frequency Transformer 2 direct step-downs are simultaneously exported the 16 the tunnel and exchanged.Export all and 1 to 16 the tunnel sample panel indication.
Beneficial effect of the present invention: the power supply of the technical program, to compare with original power supply, output power of power supply is big, and output ripple is extremely low.Increased voltage change-over switch and indicator light, whether working properlyly improved the product range of application and understood product at any time.In order to enhance productivity, adopted a part of surface mount elements, transformer is to be fixed on the shell with screw, has reduced labor content, has certain economic benefits.
Below in conjunction with drawings and Examples the present invention is made comparisons and to explain.
Description of drawings
Fig. 1 is its circuit structure theory diagram of linear power supply of the present invention;
Fig. 2 is its circuit structure schematic diagram of linear power supply of the present invention.
Embodiment
With reference to Fig. 1, this is a power supply architecture theory diagram of the present invention.
Know according to this product block diagram, the AC alternating current is input in Industrial Frequency Transformer 1 and the Industrial Frequency Transformer 2 respectively, Industrial Frequency Transformer 1 is exported after 1 to 6 road direct currents are directly exported in rectifying and wave-filtering and voltage stabilizing, and rectifying and wave-filtering the 7 tunnel is subjected to panel conversion and adjustable control after voltage stabilizing is exported, Industrial Frequency Transformer 1 direct step-down is simultaneously exported the 8 the tunnel and exchanged.Industrial Frequency Transformer 2 outputs are after 9 to 14 road direct currents are directly exported in rectifying and wave-filtering and voltage stabilizing, and rectifying and wave-filtering the 15 tunnel is subjected to panel conversion and adjustable control after voltage stabilizing is exported, Industrial Frequency Transformer 2 direct step-downs are simultaneously exported the 16 the tunnel and exchanged.Export all and 1 to 16 the tunnel sample panel indication.
This linear power supply has 2 road ac output voltages, direct output AC after Industrial Frequency Transformer 1, Industrial Frequency Transformer 2 each step-down.
With reference to Fig. 2, this is power supply architecture circuit theory diagrams of the present invention.
As shown in the figure, after 1,2 step-down of nominal voltage process Industrial Frequency Transformer, get 18 groups of AC outputs, have 2 road 9VAC directly to export, the 0.125A load is with through exporting 4 road 18VDC respectively behind rectifying and wave-filterings after the voltage stabilizing of process LM317T three-terminal voltage-stabilizing circuit in all the other each roads; 8 road 9VDC band 0.08A load; 2 road 6.5-10.5VDC (voltage is adjustable) band 0.2A load; 2 road 10.5-15VDC are with 0.2A load (voltage is adjustable).Wherein adjustable this of voltage 4 tunnel switches output voltage by 2 change over switches, is that output HIGH voltage (it is adjustable to export the 10.5-15VDC scope) is low-voltage (the 6.5-10.5VDC scope is adjustable) when switch is upspring when switch is pressed.This product is 40W, totally 16 tunnel outputs, output ripple in 5mV, 2 road 9VAC output voltage precision for+/-10% other each roads be output as+/-1%, output indicator is bright when being with load, otherwise does not work.LM317LT three-terminal voltage-stabilizing circuit can with other three terminal regulators replace as: 78
*Series, 79
*Series and other three terminal regulators.
The Industrial Frequency Transformer of this product is two ring-like Industrial Frequency Transformers, and 16 tunnel outputs are arranged, and is furnished with 16 road indicator lights, and whether the user can understand product at any time working properly.This product has adopted a part of surface mount elements reference product not have surface mount elements, can enhance productivity like this.This product transformer is to be fixed on the shell with screw.Fit product newly developed uses, and makes product structure compacter.
Product of the present invention is used in stereo set and other is on the very little equipment of output ripple voltage requirement.Its power output is 40W, and this product is a lead-free product.
Though the present invention describes with reference to the above embodiments; but those of ordinary skill in the art; will be appreciated that above embodiment is used for illustrating the present invention; should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense; so be not as limitation of the invention; as long as in connotation scope of the present invention, to the variation of above-described embodiment, the protection range that distortion all will fall into claim of the present invention.
Claims (5)
1, a kind of have a very low linear power supply of output ripple voltage, be used for stereo set and other equipment very little to the output ripple voltage requirement, it is characterized in that: described linear power supply comprises Industrial Frequency Transformer, current rectifying and wave filtering circuit, voltage regulator circuit, output circuit, panel indicator board and voltage change-over switch;
Above-mentioned power circuit signal transmits, and by the AC input, arrives current rectifying and wave filtering circuit again to Industrial Frequency Transformer, to output circuit, samples the panel indication through pressurizer simultaneously; After wherein having two-way through the Industrial Frequency Transformer step-down, directly export the AC alternating current.
2, as claimed in claim 1 have a very low linear power supply of output ripple voltage, and it is characterized in that: described Industrial Frequency Transformer is two ring-shaped transformer.
3, as claimed in claim 1 have a very low linear power supply of output ripple voltage, it is characterized in that: described linear power supply, and for improving the product range of application and showing whether product is working properly, is furnished with voltage change-over switch and indicator light.
4, as claimed in claim 1 have a very low linear power supply of output ripple voltage, and it is characterized in that: described linear power supply, Industrial Frequency Transformer are to be fixed on the shell with screw, whole power supply architecture compactness.
5, as claimed in claim 1 have a very low linear power supply of output ripple voltage, and it is characterized in that: described linear power supply, the present invention has adopted a part of paster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100352819A CN101247091A (en) | 2008-03-28 | 2008-03-28 | Linear electric power with low output ripple voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100352819A CN101247091A (en) | 2008-03-28 | 2008-03-28 | Linear electric power with low output ripple voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101247091A true CN101247091A (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100352819A Pending CN101247091A (en) | 2008-03-28 | 2008-03-28 | Linear electric power with low output ripple voltage |
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| Country | Link |
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| CN (1) | CN101247091A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873069A (en) * | 2009-04-27 | 2010-10-27 | 武汉市创佳源电子有限公司 | Stability of large closed-loop feedback system of high-efficiency linear power supply |
| CN105071666A (en) * | 2015-08-05 | 2015-11-18 | 无锡市同翔科技有限公司 | High-precision signal source board |
| CN105717403A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Insulation fault monitoring system for cell array |
| CN106230267A (en) * | 2016-08-29 | 2016-12-14 | 深圳供电局有限公司 | A kind of mobile integrated test power device |
-
2008
- 2008-03-28 CN CNA2008100352819A patent/CN101247091A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873069A (en) * | 2009-04-27 | 2010-10-27 | 武汉市创佳源电子有限公司 | Stability of large closed-loop feedback system of high-efficiency linear power supply |
| CN105717403A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Insulation fault monitoring system for cell array |
| CN105717403B (en) * | 2014-12-04 | 2018-09-07 | 国家电网公司 | Cell array insulation fault monitors system |
| CN105071666A (en) * | 2015-08-05 | 2015-11-18 | 无锡市同翔科技有限公司 | High-precision signal source board |
| CN105071666B (en) * | 2015-08-05 | 2018-11-02 | 无锡市同翔科技有限公司 | A kind of high-precision signal source board |
| CN106230267A (en) * | 2016-08-29 | 2016-12-14 | 深圳供电局有限公司 | A kind of mobile integrated test power device |
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Open date: 20080820 |