CN101387681B - Apparatus for detecting recessive breakdown of large-capacity capacitor - Google Patents
Apparatus for detecting recessive breakdown of large-capacity capacitor Download PDFInfo
- Publication number
- CN101387681B CN101387681B CN2008102349581A CN200810234958A CN101387681B CN 101387681 B CN101387681 B CN 101387681B CN 2008102349581 A CN2008102349581 A CN 2008102349581A CN 200810234958 A CN200810234958 A CN 200810234958A CN 101387681 B CN101387681 B CN 101387681B
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- connects
- diode
- input end
- 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.)
- Active
Links
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a device for checking the recessive breakdown of large value capacitor, which is formed by connecting a check output circuit, a sensitivity adjusting circuit, an amplifying circuit, a signal processing circuit and a display output circuit in turn. The device has high check automatic degrees and accurate detection.
Description
Technical field
The present invention relates to a kind of capacitance detecting device, relate in particular to a kind of device that detects recessive breakdown of large-capacity capacitor.
Background technology
Capacitor in process of production, the repair process of will wearing out after the assembling makes the capacitor parameters stability of characteristics, reaches standard.In aging the reparation, because of aluminium foil surface oxide film fault, aluminium foil burr, oxide film dust etc., in galvanization, can produce puncture, partition capacitance device breakdown point forms short circuit, and in follow-up testing, sorting, screening is discarded; Partition capacitance device breakdown point forms open circuit, and the capacitor specific characteristics parameter is recovered.Breakdown point forms the capacitor of open circuit, and we are called recessive breakdown, in afterwards the charging or load operation, can puncture once more, influences the reliability of capacitor.Therefore in capacitor fabrication process, the capacitor of recessive breakdown is filtered out, can improve the outbound reliability of products.
Summary of the invention
The technical problem to be solved in the present invention is a kind of device that detects recessive breakdown of large-capacity capacitor of defective proposition at prior art.
A kind of device that detects recessive breakdown of large-capacity capacitor of the present invention is by being connected to form successively by detection output circuit, sensitivity adjusting circuit, amplifying circuit, signal processing circuit, display output circuit.
Should invent the sorting by detection method, the capacitor that will contain recessive breakdown filters out from non-defective unit, and the capacitor consistance is guaranteed, and capacitor is improved in the reliability that the user uses, and the present invention detects the automaticity height, detects accurately.
Description of drawings
Fig. 1: structural drawing of the present invention;
Fig. 2: circuit theory diagrams of the present invention;
Fig. 3: the curve that boosts of embodiment of the invention test passes capacitor;
Fig. 4: embodiment of the invention test has the curve that boosts of recessive breakdown capacitor.
Embodiment
As shown in Figure 1.A kind of device that detects recessive breakdown of large-capacity capacitor is characterized in that this device is connected to form successively by detection output circuit 1, sensitivity adjusting circuit 2, amplifying circuit 3, signal processing circuit 4, display output circuit 5.
As shown in Figure 2, described detection output circuit 1 comprises two test sides, constant current regulated power supply, first resistance R 1, isolation capacitance C1; An end of positive output termination first resistance R 1 of constant current regulated power supply wherein, the other end of first resistance R 1 and isolation capacitance C1) an end connect and compose a test side detecting output circuit 1, the other end of isolation capacitance C1 is connected with the input end of sensitivity adjusting circuit 2, the input end of the negative output terminal of constant current regulated power supply and sensitivity adjusting circuit 2 connects and composes another test side of detecting output circuit 1, another test side ground connection of described detection output circuit 1.
Described sensitivity adjusting circuit 2 comprises slide rheostat R3, second resistance R 2, the 4th resistance R 4, the 5th resistance R 5, the first diode D1, the second diode D2; Wherein the end of slide rheostat R3 is connected with the output terminal that detects output circuit 1, the intermediate ends of slide rheostat R3 is connected in series after the 4th resistance R 4 respectively the anode with the first diode D1, the negative electrode of the second diode D2, one end of the 5th resistance R 5 connects, the other end of the 5th resistance R 5 is connected with the input end of amplifying circuit 3, the other end of slide rheostat R3 is connected in series after second resistance R 2 respectively the negative electrode with the first diode D1, the input end of amplifying circuit 3 connects, the anode of the second diode D2 respectively with the output terminal that detects output circuit 1, the input end of amplifying circuit 3 connects.
Described amplifying circuit 3 comprises that first direct supply, the first power tube Q1, the second power tube Q2, second capacitor C 2, the 3rd capacitor C 3, the 3rd diode D3, four resistance are the 6th resistance R 6 to the 9th resistance R 9; First direct supply respectively with an end of second capacitor C 2, one end of the 3rd capacitor C 3, the source electrode of the first power tube Q1, the output terminal of sensitivity adjusting circuit 2 connects, the other end of second capacitor C 2 is connected ground connection with the other end of the 3rd capacitor C 3, the grid of the first power tube Q1 connects the output terminal of sensitivity adjusting circuit 2, the drain electrode of the first power tube Q1 respectively with an end of the 6th resistance R 6, one end of the 7th resistance R 7 connects, the other end of the 6th resistance R 6 respectively with the output terminal of sensitivity adjusting circuit 2, the anode of the 3rd diode D3, the source electrode of the second power tube Q2, the input end of signal processing circuit 4 connects, the other end of the 7th resistance R 7 respectively with the negative electrode of the 3rd diode D3, one end of the 8th resistance R 8 connects, the grid of another termination second power tube Q2 of the 8th resistance R 8, the drain electrode of the second power tube Q2 respectively with the input end of signal processing circuit 4, one end of the 9th resistance R 9 connects, the input end of another termination signal processing circuit 4 of the 9th resistance R 9.
Described signal processing circuit 4 comprises an operational amplifier, the 4th capacitor C 4; Wherein 3 pin of operational amplifier, 8 pin, 16 pin are connected with the output terminal of amplifying circuit 3 respectively, and 8 pin of operational amplifier are connected in series the 4th capacitor C 4 backs and are connected with the input end of display output circuit 5, and 13 pin of operational amplifier connect the input end of display output circuit 5.
Fig. 3 is the curve that boosts of embodiment of the invention test passes capacitor;
Fig. 4 has the curve that boosts of recessive breakdown capacitor for embodiment of the invention test.Cx is tested large value capacitor, constant current regulated power supply is by 1 pair of tested large value capacitor Cx charging of first resistance R, isolation capacitance C1, discharge pulse signal is transmitted backward, adjust detection pulse sensitivity by regulating slide rheostat R3, first, second power tube Q1, Q2 pulse signals are carried out processing and amplifying, drive the back amplifier and carry out data processing, output defective products pilot lamp D6 lights, loudspeaker Y1 sends the electronics sound, remind the operating personnel that the recessive breakdown product are rejected away, thereby guarantee the reliability of outbound certified products.
Claims (3)
1. a device that detects recessive breakdown of large-capacity capacitor is characterized in that this device is connected to form successively by detection output circuit (1), sensitivity adjusting circuit (2), amplifying circuit (3), signal processing circuit (4), display output circuit (5);
Described detection output circuit (1) comprises two test sides, constant current regulated power supply, first resistance (R1), isolation capacitance (C1); An end of positive output termination first resistance (R1) of constant current regulated power supply wherein, one end of the other end of first resistance (R1) and isolation capacitance (C1) connects and composes a test side detecting output circuit (1), the other end of isolation capacitance (C1) is connected with the input end of sensitivity adjusting circuit (2), the input end of the negative output terminal of constant current regulated power supply and sensitivity adjusting circuit (2) connects and composes another test side of detecting output circuit (1), another test side ground connection of described detection output circuit (1);
Described sensitivity adjusting circuit (2) comprises slide rheostat (R3), second resistance (R2), the 4th resistance (R4), the 5th resistance (R5), first diode (D1), second diode (D2); Wherein an end of slide rheostat (R3) is connected with the output terminal that detects output circuit (1), the intermediate ends of slide rheostat (R3) is connected in series behind the 4th resistance (R4) respectively the anode with first diode (D1), the negative electrode of second diode (D2), one end of the 5th resistance (R5) connects, the other end of the 5th resistance (R5) is connected with the input end of amplifying circuit (3), the other end of slide rheostat (R3) is connected in series behind second resistance (R2) respectively the negative electrode with first diode (D1), the input end of amplifying circuit (3) connects, the anode of second diode (D2) respectively with the output terminal that detects output circuit (1), the input end of amplifying circuit (3) connects.
2. a kind of device that detects recessive breakdown of large-capacity capacitor according to claim 1 is characterized in that described amplifying circuit (3) comprises that first direct supply, first power tube (Q1), second power tube (Q2), second electric capacity (C2), the 3rd electric capacity (C3), the 3rd diode (D3), four resistance are that the 6th resistance (R6) is to the 9th resistance (R9); First direct supply respectively with an end of second electric capacity (C2), one end of the 3rd electric capacity (C3), the source electrode of first power tube (Q1), the output terminal of sensitivity adjusting circuit (2) connects, the other end of second electric capacity (C2) is connected ground connection with the other end of the 3rd electric capacity (C3), the grid of first power tube (Q1) connects the output terminal of sensitivity adjusting circuit (2), the drain electrode of first power tube (Q1) respectively with an end of the 6th resistance (R6), one end of the 7th resistance (R7) connects, the other end of the 6th resistance (R6) respectively with the output terminal of sensitivity adjusting circuit (2), the anode of the 3rd diode (D3), the source electrode of second power tube (Q2), the input end of signal processing circuit (4) connects, the other end of the 7th resistance (R7) respectively with the negative electrode of the 3rd diode (D3), one end of the 8th resistance (R8) connects, the grid of another termination second power tube (Q2) of the 8th resistance (R8), the drain electrode of second power tube (Q2) respectively with the input end of signal processing circuit (4), one end of the 9th resistance (R9) connects, the input end of another termination signal processing circuit (4) of the 9th resistance (R9).
3. a kind of device that detects recessive breakdown of large-capacity capacitor according to claim 1 is characterized in that described signal processing circuit (4) comprises an operational amplifier, the 4th electric capacity (C4); Wherein 3 pin of operational amplifier, 8 pin, 16 pin are connected with the output terminal of amplifying circuit (3) respectively, 8 pin of operational amplifier are connected in series the 4th electric capacity (C4) back and are connected with the input end of display output circuit (5), and 13 pin of operational amplifier connect the input end of display output circuit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102349581A CN101387681B (en) | 2008-11-05 | 2008-11-05 | Apparatus for detecting recessive breakdown of large-capacity capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102349581A CN101387681B (en) | 2008-11-05 | 2008-11-05 | Apparatus for detecting recessive breakdown of large-capacity capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101387681A CN101387681A (en) | 2009-03-18 |
| CN101387681B true CN101387681B (en) | 2011-04-06 |
Family
ID=40477217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102349581A Active CN101387681B (en) | 2008-11-05 | 2008-11-05 | Apparatus for detecting recessive breakdown of large-capacity capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101387681B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654554B (en) * | 2012-02-14 | 2016-12-14 | 工业和信息化部电子第五研究所 | The detection method that a kind of capacitor generation self-healing property punctures |
| CN113868049A (en) * | 2021-09-14 | 2021-12-31 | 苏州华兴源创科技股份有限公司 | Touch matrix repair circuit of capacitive touch screen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203993U (en) * | 1987-03-19 | 1988-01-20 | 宁波无线电专用设备厂 | Withstanding ac voltage testing instrument for capacitor |
| CN1797017A (en) * | 2004-12-22 | 2006-07-05 | 中芯国际集成电路制造(上海)有限公司 | Breakdown testing structure for capacitor of preventing damage caused by middle and large current of semiconductor device |
-
2008
- 2008-11-05 CN CN2008102349581A patent/CN101387681B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203993U (en) * | 1987-03-19 | 1988-01-20 | 宁波无线电专用设备厂 | Withstanding ac voltage testing instrument for capacitor |
| CN1797017A (en) * | 2004-12-22 | 2006-07-05 | 中芯国际集成电路制造(上海)有限公司 | Breakdown testing structure for capacitor of preventing damage caused by middle and large current of semiconductor device |
Non-Patent Citations (2)
| Title |
|---|
| 边姗姗，吴广宁，张血琴，李小华，彭倩.高压储能缺陷电容器直流局部放电信号的统计分析.绝缘材料.2007,40(5),63-66. * |
| 金向朝,黄松波,陆培钧,严飞,倪学锋.电容器故障监测系统的应用研究.电力电容器与无功补偿.2008,29(3),40-44. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101387681A (en) | 2009-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103364709B (en) | A kind of function test system of actual load circuit board and method | |
| CN104297622B (en) | Detect the method and device of defects of display panel | |
| CN103543371A (en) | Ground fault detecting device for an ungrounded circuit | |
| CN107367654B (en) | A kind of supercapacitor ageing testing method | |
| KR20100131490A (en) | Programmable gain trans-impedance amplifier overload recovery circuit | |
| US20130307572A1 (en) | Battery simulation circuit | |
| CN106658295A (en) | Loudspeaker direct voltage detection circuit | |
| CN215932107U (en) | Poor contact detection circuit in capacitor leakage current and insulation resistance test | |
| JP2016093039A (en) | Inspection method of solar power generation system and inspection apparatus | |
| CN101387681B (en) | Apparatus for detecting recessive breakdown of large-capacity capacitor | |
| CN210572674U (en) | Voltage sampling channel leakage current detection equipment for serial battery module cell | |
| CN206848402U (en) | Test circuit | |
| CN104020357A (en) | Capacitance test circuit and test method under DC bias condition | |
| CN103618897B (en) | A testing device of a machine core main board of a TV integrated machine | |
| CN105634251A (en) | Multifunctional IGBT driving circuit | |
| CN102752623A (en) | Signal testing device | |
| CN206533521U (en) | A kind of loudspeaker DC voltage detects circuit | |
| CN102253346A (en) | Method and device for automatically testing battery charging | |
| CN107332630A (en) | A kind of signal-testing apparatus | |
| CN205067654U (en) | A online test appearance for detecting opto -coupler | |
| CN104184109A (en) | Overvoltage protection device for lamp aging test | |
| CN213689911U (en) | Automatic detection device for on-off of ignition channel | |
| CN106410753B (en) | Motor abnormality detection circuit and control method thereof | |
| CN203310965U (en) | Functional test system for printed circuit board assembly | |
| WO2022165933A1 (en) | Device end-based defective optical device capacitive element electric leakage test system and test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |