CN204013263U - A kind of stabilized voltage power supply - Google Patents
A kind of stabilized voltage power supply Download PDFInfo
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- CN204013263U CN204013263U CN201420462343.5U CN201420462343U CN204013263U CN 204013263 U CN204013263 U CN 204013263U CN 201420462343 U CN201420462343 U CN 201420462343U CN 204013263 U CN204013263 U CN 204013263U
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- Prior art keywords
- power supply
- pressurizer
- filter
- voltage power
- stabilized voltage
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- 239000003990 capacitor Substances 0.000 claims description 39
- 238000001914 filtration Methods 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of stabilized voltage power supply, by rectifier, target alternating voltage is converted to after direct voltage, by the first filter being connected with its output, the shared model noise on this rectifier output lead is become to obvious, thereby make the second filter being connected with output end of voltage stabilizer effectively reduce difference noise, guarantee can when short circuit, not lose efficacy, and then the target direct voltage that makes this stabilized voltage power supply stable output and disturb without switch.
Description
Technical field
The utility model relates to the technical field of voltage stabilizing power supply, relates in particular a kind of stabilized voltage power supply.
Background technology
Along with the extensive use of electronic technology at each industry, scientific research field, nearly all electronic equipment all needs the power supply of galvanic current source, in actual applications, be all that the alternating current that AC network is supplied with is converted to galvanic current conventionally, then be each electronic equipment power supply.But, due to the fluctuation of ac grid voltage, can make the direct voltage of exporting after rectification also along with fluctuation, now cannot meet the voltage stabilizing requirement of each electronic equipment, even can be excessive because of the fluctuation of provided direct voltage, and cause electronic equipment to burn out.
In order to address the above problem, typically using stabilized voltage power supply presses or alternating voltage for load (as above-mentioned electronic equipment) provides galvanic current, at present, a kind of stabilized voltage power supply being widely used is switching power supply, but, find after deliberation, existing this switching power supply exists very serious switch to disturb, and even can affect the normal work of complete machine.
Utility model content
In view of this, the utility model provides a kind of stabilized voltage power supply, solves the switch perturbation technique problem that existing switching power supply exists.
For achieving the above object, the utility model provides following technical scheme:
A stabilized voltage power supply, comprising: rectifier, the first filter, pressurizer and the second filter, wherein,
One end of described the first filter is connected with the input of described rectifier output end and described pressurizer respectively, and the earth terminal of the other end and described pressurizer altogether;
One end of described the second filter is connected with the output of described rectifier, and the earth terminal of the other end and described pressurizer altogether.
Preferably, described the first filter comprises:
Positive pole is connected with the output of described rectifier and the input of described pressurizer respectively, the earth terminal of negative pole and described pressurizer the first polar capacitor altogether;
First polarity free capacitor in parallel with described the first polar capacitor.
Preferably, described the second filter comprises:
Anodally be connected with the output of described pressurizer, the earth terminal of negative pole and described pressurizer the second polar capacitor altogether;
Second polarity free capacitor in parallel with described the second polar capacitor.
Preferably, also comprise:
Be connected with described rectifier input, external AC be converted to the Industrial Frequency Transformer of target alternating current.
Preferably, described rectifier is full filter rectification device.
Preferably, described pressurizer is low-voltage differential pressurizer.
Preferably, described full filtering reorganizer is specifically the full filter rectification device of N2012ZP301T20 model.
Preferably, described low-voltage differential pressurizer is specially the low-voltage differential pressurizer of SPX1117 model.
Known via above-mentioned technical scheme, compared with prior art, the utility model openly provides a kind of stabilized voltage power supply, by rectifier, target alternating voltage is converted to after direct voltage, by the first filter being connected with its output, the shared model noise on this rectifier output lead is become to obvious, thereby make the second filter being connected with output end of voltage stabilizer effectively reduce difference noise, guarantee that filter can not lose efficacy when short circuit, and then the target direct voltage that makes this stabilized voltage power supply stable output and disturb without switch.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the electrical block diagram of a kind of stabilized voltage power supply of the utility model;
Fig. 2 is the electrical block diagram of the another kind of stabilized voltage power supply of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
In the practical application of switching power supply, when its power regulating switch transistor is operated on off state, the alternating voltage of its generation and electric current will produce spike interference and resonance and disturb by other components and parts in this switching power supply, if these interference do not adopt certain measure suppress, remove or shield, will have a strong impact on the normal work of complete machine.
In order to solve the problems referred to above in existing switching power supply, the utility model discloses a kind of stabilized voltage power supply, by rectifier, target alternating voltage is converted to after direct voltage, by the first filter being connected with its output, the shared model noise on this rectifier output lead is become to obvious, thereby make the second filter being connected with output end of voltage stabilizer effectively reduce difference noise, guarantee can when short circuit, not lose efficacy, and then the target direct voltage that makes this stabilized voltage power supply stable output and disturb without switch.
Embodiment mono-:
As shown in Figure 1, be the electrical block diagram of a kind of stabilized voltage power supply of the utility model, this stabilized voltage power supply can comprise: rectifier 11, the first filter 12, pressurizer 13 and the second filter 14, wherein,
One end of the first filter 12 is connected with the input of pressurizer 13 with rectifier 11 outputs respectively, and the earth terminal of the other end and pressurizer 13 altogether.
In actual applications, this first filter can be selected shared model filter, the first polar capacitor and first polarity free capacitor of parallel connection, consists of.
One end of the second filter 14 is connected with the output of rectifier 11, and the earth terminal of the other end and pressurizer 13 altogether.
Concrete, this second filter 14 can consist of the second polar capacitor and second polarity free capacitor of parallel connection.
In the utility model embodiment, rectifier 11 is used for converting the target alternating current receiving to direct current, and its concrete structure can be identical with the structure of rectifier of the prior art, at this, will no longer describe in detail.
Preferably, can to adopt model be the full filter rectification device of N2012ZP301T20 to this rectifier 11.
In addition, can to adopt model be the low-voltage differential pressurizer of SPX1117 to this pressurizer 13.
In addition, for fear of switch, disturb and seal in common frequency power network, make other electronic instruments, equipment and the household electrical appliance of annex be subject to severe jamming, as another embodiment of the utility model, at rectifier input, can also connect Industrial Frequency Transformer, come isolating switch to disturb, and convert extraneous alternating current to target alternating current, as alternating current 220V is converted to, exchange 5V.
To sum up, the utility model embodiment converts target alternating voltage after direct voltage to by rectifier, by the first filter being connected with its output, the shared model noise on this rectifier output lead is become to obvious, thereby make the second filter being connected with output end of voltage stabilizer effectively reduce difference noise, guarantee can when short circuit, not lose efficacy, and then the target direct voltage that makes this stabilized voltage power supply stable output and disturb without switch.
Embodiment bis-:
The electrical block diagram of the another kind of stabilized voltage power supply of the utility model as shown in Figure 2, this stabilized voltage power supply can comprise: Industrial Frequency Transformer 21, full filter rectification device 22, the first polar capacitor C1, the first polarity free capacitor C2, low-voltage differential pressurizer 23, the second polar capacitor C3 and the second polarity free capacitor C4, wherein
Industrial Frequency Transformer 21 inputs connect external AC power supply, and output connects the input of full filter rectification device 22, and external AC is converted to target alternating current.Wherein, this target alternating current can be set according to actual needs, at the present embodiment, can be+5V.
The positive pole of the first polar capacitor C1 is connected with the output of full filter rectification device 22 and the input VIN of low-voltage differential pressurizer 23 respectively, and the earth terminal GND of negative pole and this low-voltage differential pressurizer 23 altogether.
The first polarity free capacitor C2 is in parallel with this first polar capacitor C1.
In the utility model embodiment, this the first polar capacitor C1 and the first polarity free capacitor C2 have formed the shared model filter with ground connection reference voltage, electric current homophase in electric current and charged and neutral conductor while returning via the ground connection of safety, makes partial sharing pattern noise be branched to ground connection.
Wherein, can to select model be the full filter rectification device of N2012ZP301T20 to full filter rectification device 22.
The positive pole of the second polar capacitor C3 is connected with the output VOUT of low-voltage differential pressurizer 23, and the earth terminal GND of negative pole and this low-voltage differential pressurizer 23 altogether.
The second polarity free capacitor C4 is in parallel with this second polar capacitor C3.
In the utility model embodiment, the structure that the second polar capacitor C3 and the second polarity free capacitor C4 form will reduce the difference noise in the voltage of low-voltage differential pressurizer 23 outputs outputs, thereby reduce the switch existing in the final output voltage of stabilized voltage power supply, disturb, guarantee that it is for electrical stability.Wherein, in actual applications, above-mentioned capacitor C 1, C2, C3 and C4 need to bear supply voltage, and it can determine model according to the actual needs of voltage, and will guarantee can when short circuit, not lose efficacy, thereby guarantees the above-mentioned functions of this stabilized voltage power supply.
Preferably, above-mentioned capacitor C 1, C2, C3 and C4 can select the Y class capacitor that can suppress common mode disturbances.
Preferably, specifically can to select model be the low-voltage differential pressurizer of SPX1117 to this low-voltage differential pressurizer 23.
The stabilized voltage power supply providing for the utility model embodiment, it is the polar capacitor of 10 μ F that C1 and C3 can select capacity, it is the polarity free capacitor of 0.1 μ F that C2 and C4 all can select capacity, thereby, when Industrial Frequency Transformer external voltage is converted to+5V alternating voltage is inputted after full filter rectification device 22, this stabilized voltage power supply will export without switch, disturb+direct voltage of 3.3V, come for electronic component power supply, thus practical requirement.Certainly, the capacity of above-mentioned electric capacity can be adjusted according to actual needs, is not limited in described this kind of compound mode of the utility model.
It should be noted that, when the target direct voltage that provides when this stabilized voltage power supply of actual needs is different, can realize by the target alternating voltage that regulates Industrial Frequency Transformer to adjust the full filter rectification device of input, but in this process, will guarantee that each device in this stabilized voltage power supply can not lose efficacy when short circuit.
As can be seen here, the utility model embodiment converts external interchange point to target alternating current by Industrial Frequency Transformer, and input full filter rectification device, thereby this target alternating voltage is converted to after direct voltage, by what be connected with its output, the shared model filter consisting of the first polar capacitor and the first polarity free capacitor becomes obvious by the shared model noise on this full filter rectification device output lead, thereby make to be connected with low-voltage differential output end of voltage stabilizer, the second filter consisting of the second polar capacitor and the second polarity free capacitor reduces difference noise effectively, thereby the target direct voltage that makes this stabilized voltage power supply stable output and disturb without switch.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a stabilized voltage power supply, is characterized in that, comprising: rectifier, the first filter, pressurizer and the second filter, wherein,
One end of described the first filter is connected with the input of described rectifier output end and described pressurizer respectively, and the earth terminal of the other end and described pressurizer altogether;
One end of described the second filter is connected with the output of described rectifier, and the earth terminal of the other end and described pressurizer altogether.
2. stabilized voltage power supply according to claim 1, is characterized in that, described the first filter comprises:
Positive pole is connected with the output of described rectifier and the input of described pressurizer respectively, the earth terminal of negative pole and described pressurizer the first polar capacitor altogether;
First polarity free capacitor in parallel with described the first polar capacitor.
3. stabilized voltage power supply according to claim 1, is characterized in that, described the second filter comprises:
Anodally be connected with the output of described pressurizer, the earth terminal of negative pole and described pressurizer the second polar capacitor altogether;
Second polarity free capacitor in parallel with described the second polar capacitor.
4. according to the stabilized voltage power supply described in claim 1-3 any one, it is characterized in that, also comprise:
Be connected with described rectifier input, external AC be converted to the Industrial Frequency Transformer of target alternating current.
5. stabilized voltage power supply according to claim 4, is characterized in that, described rectifier is full filter rectification device.
6. stabilized voltage power supply according to claim 4, is characterized in that, described pressurizer is low-voltage differential pressurizer.
7. stabilized voltage power supply according to claim 5, is characterized in that, described full filtering reorganizer is specifically the full filter rectification device of N2012ZP301T20 model.
8. stabilized voltage power supply according to claim 6, is characterized in that, described low-voltage differential pressurizer is specially the low-voltage differential pressurizer of SPX1117 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462343.5U CN204013263U (en) | 2014-08-15 | 2014-08-15 | A kind of stabilized voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462343.5U CN204013263U (en) | 2014-08-15 | 2014-08-15 | A kind of stabilized voltage power supply |
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| Publication Number | Publication Date |
|---|---|
| CN204013263U true CN204013263U (en) | 2014-12-10 |
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| CN201420462343.5U Expired - Lifetime CN204013263U (en) | 2014-08-15 | 2014-08-15 | A kind of stabilized voltage power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107682032A (en) * | 2017-09-26 | 2018-02-09 | 广东欧珀移动通信有限公司 | Mu balanced circuit, RF front-end module and terminal |
| CN107959996A (en) * | 2017-11-21 | 2018-04-24 | 苏州晶品新材料股份有限公司 | Controller |
-
2014
- 2014-08-15 CN CN201420462343.5U patent/CN204013263U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107682032A (en) * | 2017-09-26 | 2018-02-09 | 广东欧珀移动通信有限公司 | Mu balanced circuit, RF front-end module and terminal |
| CN107682032B (en) * | 2017-09-26 | 2019-09-17 | Oppo广东移动通信有限公司 | Voltage regulator circuit, RF front-end module and terminal |
| CN107959996A (en) * | 2017-11-21 | 2018-04-24 | 苏州晶品新材料股份有限公司 | Controller |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |