CN105023771A - Anti-interference capacitor of digital circuit - Google Patents
Anti-interference capacitor of digital circuit Download PDFInfo
- Publication number
- CN105023771A CN105023771A CN201510493063.XA CN201510493063A CN105023771A CN 105023771 A CN105023771 A CN 105023771A CN 201510493063 A CN201510493063 A CN 201510493063A CN 105023771 A CN105023771 A CN 105023771A
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- out pin
- capacitor
- leading
- digital circuit
- negative
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- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
Abstract
The invention relates to an anti-interference capacitor of a digital circuit. The anti-interference capacitor comprises a cover case and a bottom cover. An electrolytic capacitor core and a ceramic capacitor core are installed inside the cover case. A positive leading-out pin and a negative leading-out pin are arranged on the bottom cover; and the positive leading-out pin is longer and the negative leading-out pin are shorter. A positive electrode and a negative electrode of the electrolytic capacitor core are respectively connected in parallel with two electrodes of the ceramic capacitor core by leading-out leads; and a positive contact is connected with the positive leading-out pin and a negative contact is connected with the negative leading-out pin. The anti-interference capacitor is characterized in that the electrolytic capacitor with the high capacity and the ceramic capacitor with the low capacity are assembled into the single capacitor housing in an integrated mode; the electrolytic capacitor is used for maintaining stability of the power voltage; and the ceramic capacitor is used for preventing the power voltage leap. The provided capacitor is not only suitable for realizing the anti-interference effect of the chip power terminal of the digital circuit and the single-chip microcomputer circuit but also enables the component arrangement of the circuit board to become convenient and concise.
Description
Technical field
The present invention relates to a kind of capacitor, particularly a kind of digital circuit anti-interference condenser.
Background technology
In the circuit of digital circuit and single chip circuit, owing to being usually operated in switching signal state, often there is from " 0 " to " 1 " or from " 1 " to the saltus step of " 0 " in the signal level of its input and output, namely from low level to high level or from high level to low level sudden change, supply voltage can be made in the process of sign mutation to produce higher spike, the normal work of chip itself and other circuit will be had influence on, therefore in the winding displacement of circuit board, a pair capacity different capacitors to be set at the supply pin two ends of each digital circuit and singlechip chip, large capacitor is used for burning voltage, small capacitor is used for circuit decoupling.But, in the practical application of digital circuit, often save some capacitors because typesetting cabling is inconvenient, serve destabilizing factor to the band of the work of circuitry.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of digital circuit anti-interference condenser.
The technical solution adopted for the present invention to solve the technical problems is: a kind of digital circuit anti-interference condenser, comprises case and bottom, and described casing interior is equipped with an electrochemical capacitor core and a ceramic disc capacitor core.
Preferably, described bottom has one just bringing out pin and a negative terminal goes out pin, described just to bring out pin longer, and it is shorter that described negative terminal goes out pin.
Preferably, the positive and negative polarities of described electrochemical capacitor core are in parallel respectively by the two poles of the earth of drawing wire and ceramic disc capacitor core, positive contact wherein with just bring out pin and be connected, negative contacts and negative terminal go out pin and are connected.
Operation principle of the present invention: gathered the larger electrochemical capacitor of capacity and the less ceramic disc capacitor of a capacity in single capacitor casing, electrochemical capacitor is for maintaining the stable of supply voltage, and ceramic disc capacitor is for preventing the sudden change of supply voltage.
Advantage of the present invention: capacitor of the present invention, is not only applicable to the anti-interference of digital circuit and single chip circuit chip power end, and very convenient for the arrangement of wiring board.
Accompanying drawing explanation
Fig. 1 is the contour structures schematic diagram of a kind of digital circuit anti-interference condenser disclosed in this invention;
Fig. 2 is the internal structure schematic diagram of a kind of digital circuit anti-interference condenser disclosed in this invention;
Wherein, 1-case, 2-bottom, 3-just brings out pin, and 4-negative terminal goes out pin, 5-electrochemical capacitor core, 6-ceramic disc capacitor core, and 7-draws wire, 8-positive contact, 9-negative contacts.
Embodiment
In order to deepen the understanding of the present invention, be described in further detail the present invention below in conjunction with drawings and Examples, this embodiment, only for explaining the present invention, not forming protection scope of the present invention and limiting.
Embodiment
As shown in Figure 1, be a kind of shape assumption diagram of digital circuit anti-interference condenser, it comprises case 1 and bottom 2, all adopts high-strength insulating material to make the bottom that described bottom 2 is fastened on case 1, forms a cylinder; Described bottom 2 has one just bringing out pin 3 and a negative terminal goes out pin 4, all adopt copper material to make, and skin is through zinc-plated process, described just to bring out pin 3 longer, and it is shorter that described negative terminal goes out pin 4, all can weld on a printed circuit board.
As shown in Figure 2, it is a kind of cut-away view of digital circuit anti-interference condenser, described case 1 is built with an electrochemical capacitor core 5 and a ceramic disc capacitor core 6, the capacitance of described electrochemical capacitor core 5 is 10 microfarads, the capacitance of described ceramic disc capacitor is 100 picofarads, and the two end electrodes of described electrochemical capacitor core has dividing of both positive and negative polarity, and the electrode of two capacitance cores adopts extraction wire 7 to be connected in parallel, its positive contact 8 with just bring out pin 3 and be connected, its negative contacts 9 and negative terminal go out pin 4 and are connected.
Adopt a kind of digital circuit anti-interference condenser of the present invention, internal parallel two capacitor cores varied in size, wherein capacity can be used for the supply voltage in stable electronic circuit, the electric capacity that capacity is less can be used for preventing the transient voltage in electronic circuit from suddenling change, this capacitor of the present invention, be not only applicable to the anti-interference of digital circuit and single chip circuit chip power end, and make the arrangement of components and parts in wiring board very convenient and succinct.
Above-described embodiment should not limit the present invention by any way, and the technical scheme that the mode that all employings are equal to replacement or equivalency transform obtains all drops in protection scope of the present invention.
Claims (3)
1. a digital circuit anti-interference condenser, comprises case and bottom, it is characterized in that: described casing interior is equipped with an electrochemical capacitor core and a ceramic disc capacitor core.
2. a kind of digital circuit anti-interference condenser according to claim 1, is characterized in that: described bottom has one just bringing out pin and a negative terminal goes out pin, and described just to bring out pin longer, and it is shorter that described negative terminal goes out pin.
3. a kind of digital circuit anti-interference condenser according to claim 1, it is characterized in that: the positive and negative polarities of described electrochemical capacitor core are in parallel respectively by the two poles of the earth of drawing wire and ceramic disc capacitor core, positive contact wherein with just bring out pin and be connected, negative contacts and negative terminal go out pin and are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493063.XA CN105023771A (en) | 2015-08-12 | 2015-08-12 | Anti-interference capacitor of digital circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493063.XA CN105023771A (en) | 2015-08-12 | 2015-08-12 | Anti-interference capacitor of digital circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105023771A true CN105023771A (en) | 2015-11-04 |
Family
ID=54413662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510493063.XA Pending CN105023771A (en) | 2015-08-12 | 2015-08-12 | Anti-interference capacitor of digital circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105023771A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217590A (en) * | 1997-09-05 | 1999-05-26 | 克米特电子公司 | Multi-element capacitor |
| JP2007043197A (en) * | 2006-10-13 | 2007-02-15 | Showa Denko Kk | Stacked capacitor |
| CN101042960A (en) * | 2006-03-13 | 2007-09-26 | Avx公司 | Capacitor assembly |
| CN201725692U (en) * | 2010-06-21 | 2011-01-26 | 郎树杰 | Complex electrolytic capacitor capable of resisting high-frequency ripple current |
| CN102969908A (en) * | 2011-09-01 | 2013-03-13 | 周旺龙 | Capacitor unit combined structure for inverters of electric vehicles |
| CN204884910U (en) * | 2015-08-12 | 2015-12-16 | 吴江佳亿电子科技有限公司 | Digital circuit anti interference condenser |
-
2015
- 2015-08-12 CN CN201510493063.XA patent/CN105023771A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217590A (en) * | 1997-09-05 | 1999-05-26 | 克米特电子公司 | Multi-element capacitor |
| CN101042960A (en) * | 2006-03-13 | 2007-09-26 | Avx公司 | Capacitor assembly |
| JP2007043197A (en) * | 2006-10-13 | 2007-02-15 | Showa Denko Kk | Stacked capacitor |
| CN201725692U (en) * | 2010-06-21 | 2011-01-26 | 郎树杰 | Complex electrolytic capacitor capable of resisting high-frequency ripple current |
| CN102969908A (en) * | 2011-09-01 | 2013-03-13 | 周旺龙 | Capacitor unit combined structure for inverters of electric vehicles |
| CN204884910U (en) * | 2015-08-12 | 2015-12-16 | 吴江佳亿电子科技有限公司 | Digital circuit anti interference condenser |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |
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| WD01 | Invention patent application deemed withdrawn after publication |