CN105743366A - Safe and stable rectifier filter - Google Patents
Safe and stable rectifier filter Download PDFInfo
- Publication number
- CN105743366A CN105743366A CN201610194598.1A CN201610194598A CN105743366A CN 105743366 A CN105743366 A CN 105743366A CN 201610194598 A CN201610194598 A CN 201610194598A CN 105743366 A CN105743366 A CN 105743366A
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- CN
- China
- Prior art keywords
- filter
- wire
- capacitor
- rectifier
- tantalum
- Prior art date
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/008—Terminals
- H01G9/012—Terminals specially adapted for solid capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
- H01G9/153—Skin fibre
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a safe and stable rectifier filter. The safe and stable rectifier filter comprises two rectifier diodes, two filter capacitors and a bleeder resistor, wherein the two filter capacitors are connected in series; the two rectifier diodes are connected in series; the two series-wound rectifier diodes are connected with the two series-wound filter capacitors in parallel; the bleeder resistor is connected at the two ends of the two series-wound filter capacitors in parallel; and the safe and stable rectifier filter performs rectifying and filtering on an alternating voltage to obtain a smooth direct voltage, wherein the filter capacitors are tantalum electrolytic capacitors. Under the condition of same voltage withstand and capacitance, the volume of the filter capacitors is relatively small, so that the volume of the safe and stable rectifier filter can be reduced; in addition, the rectifier filter is stable in performance and capable of keeping a good electrical performance after long-term operation; the shell of the filter capacitor adopts an epoxy resin shell which is formed by packaging the exterior of the capacitor elements with epoxy resin, so that the rectifier filter has an anti-creeping function, and is safer.
Description
Technical field
The present invention relates to arrangement filter circuit field, particularly to the rectifier filter of a kind of safety and stability.
Background technology
LED drive circuit is it is necessary to have input rectifying wave filter and output rectification filter device.Input rectifying wave filter needs relatively large capacitance rectifier output voltage could be smoothed to allowed band.Output rectification filter device is also required to enough capacitances and comes the stability of holding circuit and the smooth of output electric current.Current rectifying and wave filtering circuit all contains electric capacity, and the maximum weakness of electrolysis condenser is that the life-span is short, and unstable properties.
Summary of the invention
The main purpose of the present invention is to provide the rectifier filter of a kind of long service life, safety and stability.
The present invention proposes the rectifier filter of a kind of safety and stability, including the full-wave voltage doubler being made up of two commutation diodes, two filter capacitors and a bleeder resistance, filter capacitor series connection described in two, commutation diode series connection described in two, described in the two of series connection, commutation diode is in parallel with filter capacitor described in connect two, described bleeder resistance be connected in parallel on series connection two described in the two ends of filter capacitor, constitute a full-wave voltage doubler；nullDescribed filter capacitor includes shell and the capacitor element being placed in described shell，Described capacitor element includes capacitor core、Negative wire and positive wire，Described capacitor core includes by the porous tantalum powder sintering block positive electrode substrate of high temperature sintering after tantalum metal powder briquet，The surface of described tantalum powder sintering block positive electrode substrate is formed with TaO5 film through anodic oxidation，A tantalum wire is stretched out to positive terminal in described tantalum powder sintering block positive electrode substrate，Described positive wire welds with described tantalum wire，Negative pole end in described tantalum powder sintering block positive electrode substrate forms solid electrolyte MnO2 layer by impregnating manganese nitrate then through high temperature sintering，Described solid electrolyte MnO2 layer is coated with negative pole graphite linings，Described negative pole graphite linings is coated with terne metal conductive layer，Described negative wire is welded on the negative pole end of described capacitor core，It is electrically connected with described solid electrolyte MnO2 layer；Described negative wire and described positive wire be arranged in parallel, and described shell is that employing is epoxy resin enclosed at the outside epoxy package formed of described capacitor core.
Preferably, described negative wire is copper wire, and described positive wire is nickel wire.
The rectifier filter of the present invention, for the alternating voltage of input is carried out rectification, filtering, obtains a smooth DC voltage.Bleeder resistance in parallel is for providing a path of releasing to filter capacitor, in order to after filter capacitor quits work, the electric energy of its two ends storage of releasing.
After the tantalum powder briquet that filter capacitor employing granule is very thin, high temperature sintering becomes the tantalum powder sintering block positive electrode substrate of porous, and the effective area in monomer whose is long-pending is big, uses temperature range width；The surface of tantalum powder sintering block positive electrode substrate is formed with TaO5 film through anodic oxidation, and the dielectric constant of TaO5 film is bigger than the dielectric constant of alumite；Negative pole end in tantalum powder sintering block positive electrode substrate forms solid electrolyte MnO2 layer by impregnating manganese nitrate then through high temperature sintering, is coated with negative pole graphite linings, is coated with terne metal conductive layer in negative pole graphite linings on solid electrolyte MnO2 layer；Therefore when identical pressure and capacitance, the small volume of filter capacitor, can reduce the volume of the rectifier filter of safety and stability, and stable performance, work long hours the electrical property remaining to keep good.
The shell of filter capacitor is that employing is epoxy resin enclosed has anticreep effect at the outside epoxy package formed of capacitor element, safer.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the rectifier filter of the safety and stability of the present invention；
Fig. 2 is the sectional view of the capacitor core of the filter capacitor in the rectifier filter of the safety and stability of the present invention；
Fig. 3 is the sectional view of the filter capacitor in the rectifier filter of the safety and stability of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Referring to figs. 1 through Fig. 3, it is proposed to an embodiment of the rectifier filter of the safety and stability of the present invention:
The rectifier filter that safety is stable includes the full-wave voltage doubler being made up of two commutation diode D1, D2, two filter capacitors C1, C2 and a bleeder resistance R, two filter capacitor C1, C2 series connection, two commutation diode D1, D2 series connection, two commutation diode D1, D2 of series connection are in parallel with two filter capacitor C1, the C2 connected, bleeder resistance R is connected in parallel on the two ends of two filter capacitor C1, C1 of series connection, constitutes a full-wave voltage doubler.Bleeder resistance R is for providing a path of releasing to filter capacitor C1, C2, in order to after filter capacitor C1, C2 quit work, the electric energy of its two ends storage of releasing.During circuit work, two commutation diode Dl, D2 and two electric capacity C1, C2 composition full-wave voltage doubler the alternating voltage inputted is carried out rectification, filtering, obtain a smooth DC voltage and export.
Filter capacitor C1, C2 include shell 10 and the capacitor element being placed in shell 10, and capacitor element includes capacitor core 20, negative wire 40 and positive wire 30.Capacitor core 20 includes by the porous tantalum powder sintering block positive electrode substrate 21 of high temperature sintering after tantalum metal powder briquet, and the effective area in monomer whose is long-pending is big, uses temperature range width.The dielectric constant that the surface of tantalum powder sintering block positive electrode substrate 21 is formed with TaO5 film 22, TaO5 film 22 through anodic oxidation is bigger than the dielectric constant of alumite.Stretching out a tantalum wire 26 to positive terminal in tantalum powder sintering block positive electrode substrate 21, positive wire 30 welds with tantalum wire 26, and positive wire is nickel wire.Negative pole end in tantalum powder sintering block positive electrode substrate 21 forms solid electrolyte MnO2 layer 23 by impregnating manganese nitrate then through high temperature sintering, solid electrolyte MnO2 layer 23 is coated with negative pole graphite linings 24, negative pole graphite linings 24 is coated with terne metal conductive layer 25, negative wire 40 is welded on the negative pole end of capacitor core 20, is electrically connected with solid electrolyte MnO2 layer 23.Negative wire 40 is copper wire.Negative wire 40 and described positive wire 30 be arranged in parallel, and outside the shell that extends.
Shell 10, for adopting the epoxy resin enclosed epoxy package formed in capacitor element outside, has anticreep effect, safer.
This filter capacitor when identical pressure and capacitance, its small volume, can reduce the volume of the rectifier filter of safety and stability, and stable performance, work long hours the electrical property remaining to keep good.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure transformation utilizing description of the present invention and accompanying drawing content to make; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (2)
1. the rectifier filter of a safety and stability, it is characterized in that, including the full-wave voltage doubler being made up of two commutation diodes, two filter capacitors and a bleeder resistance, filter capacitor series connection described in two, commutation diode series connection described in two, commutation diode described in the two of series connection and filter capacitor parallel connection described in connect two, described bleeder resistance be connected in parallel on series connection two described in the two ends of filter capacitor, constitute a full-wave voltage doubler；nullDescribed filter capacitor includes shell and the capacitor element being placed in described shell，Described capacitor element includes capacitor core、Negative wire and positive wire，Described capacitor core includes by the porous tantalum powder sintering block positive electrode substrate of high temperature sintering after tantalum metal powder briquet，The surface of described tantalum powder sintering block positive electrode substrate is formed with TaO5 film through anodic oxidation，A tantalum wire is stretched out to positive terminal in described tantalum powder sintering block positive electrode substrate，Described positive wire welds with described tantalum wire，Negative pole end in described tantalum powder sintering block positive electrode substrate forms solid electrolyte MnO2 layer by impregnating manganese nitrate then through high temperature sintering，Described solid electrolyte MnO2 layer is coated with negative pole graphite linings，Described negative pole graphite linings is coated with terne metal conductive layer，Described negative wire is welded on the negative pole end of described capacitor core，It is electrically connected with described solid electrolyte MnO2 layer；Described negative wire and described positive wire be arranged in parallel, and described shell is that employing is epoxy resin enclosed at the outside epoxy package formed of described capacitor core.
2. the rectifier filter of safety and stability according to claim 1, it is characterised in that described negative wire is copper wire, described positive wire is nickel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194598.1A CN105743366A (en) | 2016-03-31 | 2016-03-31 | Safe and stable rectifier filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194598.1A CN105743366A (en) | 2016-03-31 | 2016-03-31 | Safe and stable rectifier filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105743366A true CN105743366A (en) | 2016-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610194598.1A Pending CN105743366A (en) | 2016-03-31 | 2016-03-31 | Safe and stable rectifier filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105743366A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203103134U (en) * | 2012-12-17 | 2013-07-31 | 东莞市卓昊电子有限公司 | Improved aluminium electrolytic capacitor |
| CN203181275U (en) * | 2012-12-31 | 2013-09-04 | 陈榕锦 | LED drive circuit |
| CN203397914U (en) * | 2013-08-23 | 2014-01-15 | 株洲宏达电子有限公司 | An ultra-low ESR chip macromolecular solid electrolytic capacitor |
| CN104319103A (en) * | 2014-11-10 | 2015-01-28 | 株洲宏达电子有限公司 | Metal shell packaged polymer tantalum capacitor and preparation method thereof |
-
2016
- 2016-03-31 CN CN201610194598.1A patent/CN105743366A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203103134U (en) * | 2012-12-17 | 2013-07-31 | 东莞市卓昊电子有限公司 | Improved aluminium electrolytic capacitor |
| CN203181275U (en) * | 2012-12-31 | 2013-09-04 | 陈榕锦 | LED drive circuit |
| CN203397914U (en) * | 2013-08-23 | 2014-01-15 | 株洲宏达电子有限公司 | An ultra-low ESR chip macromolecular solid electrolytic capacitor |
| CN104319103A (en) * | 2014-11-10 | 2015-01-28 | 株洲宏达电子有限公司 | Metal shell packaged polymer tantalum capacitor and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 肖景和: "《电子元器件识别与检测百问百答》", 31 July 2009 * |
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| PB01 | Publication | ||
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Application publication date: 20160706 |