CN2812021Y - Capacitor measurer - Google Patents
Capacitor measurer Download PDFInfo
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- CN2812021Y CN2812021Y CN 200520043714 CN200520043714U CN2812021Y CN 2812021 Y CN2812021 Y CN 2812021Y CN 200520043714 CN200520043714 CN 200520043714 CN 200520043714 U CN200520043714 U CN 200520043714U CN 2812021 Y CN2812021 Y CN 2812021Y
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- switch
- capacitor
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- testing device
- high frequency
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Abstract
The utility model relates to a capacitor measurer comprising an adjustable high voltage direct current source of which the output end is connected with one end of a first switch; the other end of the first switch is connected with one end of a charge resistor of which the other end is connected with one end of a first discharge resistor; the other end of the first discharge resistor is connected with one end of a second switch of which the other end is connected with the ground; a control end of the first switch is connected with a first output end of a high frequency interactive switch controller; a control end of the second switch is connected with a second output end of the high frequency interactive switch controller. The utility model is characterized in that the high frequency interactive switch controller can also be connected with a time-shared control device.
Description
Technical field:
The utility model relates to a kind of capacitor testing device, particularly a kind of device that can carry out capacitor high frequency charge-discharge test.
Background technology:
The electronic industry in modern age continues flourish, electronic product miscellaneous makes people's life more comfortable, and in the manufacture process of electronic product, capacitor is indispensable electronic package, unsettled capacitor causes the damage of electronic product easily, and it is very important therefore in the production run of electronic product the quality of capacitor being done every test.Especially now electronic product is more and more higher to the frequency requirement and the voltage request of capacitor, therefore need carry out high voltage to capacitor, and the high frequency charge-discharge test of big electric current is so that guarantee the quality of capacitor.
The utility model content:
The purpose of this utility model provides a kind of capacitor testing device that can carry out the high frequency charge-discharge test to capacitor.
To achieve these goals, the technical solution of the utility model is: a kind of capacitor testing device, comprise adjustable high voltage direct current source, the output terminal in adjustable high voltage direct current source is connected with an end of first switch, the other end of first switch is connected with an end of charging resistor, the other end of charging resistor is connected with an end of first discharge resistance, the other end of first discharge resistance is connected with an end of second switch, the other end ground connection of second switch, the control end of first switch is connected with first output terminal of the interactive on-off controller of high frequency, the control end of second switch is connected with second output terminal of the interactive on-off controller of high frequency, it is characterized in that the interactive on-off controller of this high frequency also can be connected with a minute timed unit, divide first output terminal of timed unit to be connected with the control end of the 3rd switch, one end of the 3rd switch is connected with an end of second discharge resistance, the other end of second discharge resistance is connected with the other end of charging resistor, the other end ground connection of the 3rd switch, divide second output terminal of timed unit to be connected with the control end of the 4th switch with the 5th switch, the normally closed contact of the 5th switch is connected with the other end of charging resistor, the normally opened contact of the 5th switch is connected with an end of capacitance value measuring apparatus, the normally closed contact ground connection of the 4th switch, the normally opened contact of the 4th switch is connected with the other end of capacitance value measuring apparatus.
Adopt this structure, can utilize the interactive on-off controller of high frequency to control first switch and second switch is worked successively, testing capacitor is discharged and recharged, thereby realize capacitor high frequency charge-discharge test.Divide timed unit can control the high-frequency test time, and after high-frequency test, control the 3rd switch work, capacitor is carried out rapid discharge, prevent the danger that the capacitor discharge does not thoroughly cause.Divide timed unit after discharge finishes, to send signal, control the 4th switch and the 5th switch work, directly the testing capacitor two ends are connected with the capacitance value measuring apparatus two ends, realize the test of automated capacitive value.Therefore, this design is secure to the safety of operating personnel and device itself.
Description of drawings:
Fig. 1 is the block scheme of the utility model one embodiment
Fig. 2 is the circuit diagram of the interactive on-off controller of its medium-high frequency
Fig. 3 is for wherein dividing the circuit diagram of timed unit
Embodiment:
Below in conjunction with drawings and Examples the utility model is further described.
A kind of capacitor testing device, comprise adjustable high voltage direct current source 1, the output terminal in adjustable high voltage direct current source 1 is connected with an end of first switch S 1, the other end of first switch S 1 is connected with the end of charging resistor R1, the other end of charging resistor R1 is connected with the end of the first discharge resistance R2, the other end of the first discharge resistance R2 is connected with the end of second switch S2, the other end ground connection of second switch S2, the control end of first switch S 1 is connected with first output terminal of the interactive on-off controller 2 of high frequency, the control end of second switch S2 is connected with second output terminal of the interactive on-off controller 2 of high frequency, it is characterized in that the interactive on-off controller 2 of this high frequency also can be connected with minute timed unit 3, divide first output terminal of timed unit 3 to be connected with the control end of the 3rd switch S 3, one end of the 3rd switch S 3 is connected with the end of the second discharge resistance R3, the other end of the second discharge resistance R3 is connected with the other end of above-mentioned charging resistor R1, the other end ground connection of the 3rd switch S 3, divide second output terminal of timed unit 3 to be connected with the control end of the 4th switch S 4 and the 5th switch S 5, during actual the use, the fixed contact of the 5th switch S 5 is connected with the end of testing capacitor C, the normally closed contact of the 5th switch S 5 is connected with the other end of charging resistor R1, the normally opened contact of the 5th switch S 5 is connected with an end of capacitance value measuring apparatus 4, between the other end of testing capacitor C and ground, also be connected with the 4th switch S 4, the fixed contact of the 4th switch S 4 is connected with the other end of testing capacitor C, the normally closed contact ground connection of the 4th switch S 4, the normally opened contact of the 4th switch S 4 is connected with the other end of capacitance value measuring apparatus 4.
Adopt this structure, can utilize the interactive on-off controller of high frequency to control first switch and second switch is worked successively, testing capacitor is discharged and recharged, thereby realize capacitor high frequency charge-discharge test.Divide timed unit can control the high-frequency test time, and after high-frequency test, control the 3rd switch work, capacitor is carried out rapid discharge, prevent the danger that the capacitor discharge does not thoroughly cause.Divide timed unit after discharge finishes, to send signal, control the 4th switch and the 5th switch work, directly the testing capacitor two ends are connected with the capacitance value measuring apparatus two ends, realize the test of automated capacitive value.
The other end of charging resistor R1 also can be connected with oscillograph 5, so that the Real Time Observation charge status.
Among Fig. 2, N101 is a master frequency oscillator, and SG3525 constitutes by pulse width modulator.Master oscillator frequency is set at 1,2,5,100,200,500, nine kinds of 1K, 2K, 5KHz select for users.R108 is a timing resistor, and C102～C110 is a timing capacitor, changes the timing capacitor capacity, will obtain different main oscillation frequencies, and this can reach by the frequency selective switch S601 of front panel.PR101 is the pulse duty cycle regulator, can obtain the square wave pulse of different duty by it.From the test instrument operating frequency range, the ratio of setting discharge time and duration of charging is 1: 4, and this is the discharge first-harmonic.By phase inverter D104-3, can obtain the charging first-harmonic A of 4 times of width times.But first-harmonic A and first-harmonic B can not use the drive signal usefulness of making charging and discharging switch S 1 and S2 in the circuit, because at a time, two first-harmonics exist the sequential overlapping phenomenon, will cause the generation of common-mode conduction problem.Then S1 switch among Fig. 1-1 and S2 switch at a time exist the problem of conducting simultaneously.In practical operation, require charging first-harmonic A time-delay Δ 1 constantly open-minded, require discharge first-harmonic B time-delay Δ 2 constantly open-minded, to avoid the appearance of common-mode conducting phenomenon.D101A and D101B produce Δ special-purpose monostable circuit constantly.The Δ 1 that they produce, Δ 2 in D104-6 and D104-8 stack, produces mutual unduplicated charging first-harmonic A1 and discharge first-harmonic A2.This Δ width is by timing resistor R134, R135 and capacitor C 133, and C134 decides.The electronic switch components and parts HGTG18N120BND insulated gate bipolar transistor switching tube time delay td that uses as S1 and S2 switch is much smaller than 200n, and Δ generally gets final product up and down at 2uS.
Among Fig. 3, K601 is a timer, and K602 is a counter, and K402, K403, K408, K409 are timing relay.
After test instrument starts, the 220V alternating voltage is sent into 8 terminations of timer K601 by the K406-1 contact, send the two-way interactive signal from K407 simultaneously and also be added to K601-1 end and period counter K602-7 end respectively, counter and timer enter duty, 8 ends of K601 and 6 end adhesives, C road controlled source gets electric, and it is bright to discharge and recharge pilot lamp VD604, and high-voltage relay K702 and test instrument all are in the dv/dt duty.After timing is full, K601-6 go electric K601-5 get electric after, the electric energy that is stored in C407～C409 capacitor flows to high-voltage relay K404 by relay contact K405-1, the loop discharge that capacitor forms by contact K404-1 and resistance R 337 and R338.The maximum discharge period, depend on and the capacity of energy storage capacitor C407～C409 in fact also depend on the time-delay setting of timing relay K402.
K402 is a timing relay, and short circuit duration is set at 4s, and section at this moment charges and discharge electric light, parameter testing lamp and all is and extinguishes state.The short circuit dischange period can preset by the vernier adjustment knob of timing relay K402.After setting-up time arrives, that the K402-6 termination gets is electric (+27V), high-voltage relay K701, K702 and timing relay K403 are got, parameter pilot lamp VD603 lights, the perform region of K701, K702 transfers the parameter testing district to from the dv/dt test site, short circuit dischange finishes, and capacitor parameters can be tested.
The parameter testing period is set by timing relay K403, and this test instrument is set at 15 seconds, also can preset by the vernier adjustment knob of timing relay K403.After timing relay K403 setting-up time arrived, the K403 output state reversed, contact K403-7 closure, produce one and jump the edge down, be the forward position of restart pulse, timer K601 is restarted, enter the dv/dt test site, restart second work period.Simultaneously, K403-3 produces one and goes up the jumping edge, and this is the forward position that adds pulse the cycle.At synchronization, since controlled parameter testing power supply d dead electricity, K402, K403 closes, K403-7, and K403-3 replys original state.
N parameter testing finishes and sends n cycle to add pulse, and after counter K602 counted and completely presets several n, output state reversed.K602-3 sends abort signal (" 1 " → " 0 "), makes the K601 timer reply original state.
In the present embodiment, what first switch and second switch adopted is electronic switch components and parts HGTG18N120BND insulated gate bipolar transistor switching tube.The 3rd switch, the 4th switch and the 5th switch are electromagnetic switch.First discharge resistance is 600K Ω, and capacitor is by the equalizing resistance discharge of discharge switch 600K Ω, and discharge time constant dominant bit 1～2 second is logical at a slow speed degree.Second discharge resistance is 6K Ω, and capacitor is by the 3rd switch connection 6K Ω discharge resistance, and discharge time constant is about 20-30ms, is logical fast degree, and the short circuit dischange time preset is 4s, so behind the 4s, capacitor is just connected with measuring bridge.This design is all secure to the safety of operating personnel and device itself.In the present embodiment, the short circuit dischange time preset is 4S, but this time is adjustable, and the different time can be set according to different needs.
When the voltage of high-voltage DC power supply is very high, just need the charge and discharge switch of the big electric current of application of high voltages, promptly first switch and second switch are very high to the requirement of voltage and current.At this moment, first switch can adopt two groups of charge switch parallel connections, and each group charge switch is made up of a plurality of switch in parallel; Second switch also can adopt two groups of discharge switch parallel connections, and each group discharge switch is made up of a plurality of switch in parallel, to solve the problem of high voltage and big electric current.
In the present embodiment, this capacitor testing device is connected to capacitance value measuring apparatus, but be to be understood that, this capacitor testing device also can not comprise capacitance value measuring apparatus, but after high-frequency impulse test, whether every index of test capacitors is qualified to the independent capacitance value measuring apparatus.Employed capacitance value measuring apparatus is the CLR electric bridge in the present embodiment.
Claims (6)
1, a kind of capacitor testing device, comprise adjustable high voltage direct current source, the output terminal in adjustable high voltage direct current source is connected with an end of first switch, the other end of first switch is connected with an end of charging resistor, the other end of charging resistor is connected with an end of first discharge resistance, the other end of first discharge resistance is connected with an end of second switch, the other end ground connection of second switch, the control end of first switch is connected with first output terminal of the interactive on-off controller of high frequency, the control end of second switch is connected with second output terminal of the interactive on-off controller of high frequency, it is characterized in that the interactive on-off controller of this high frequency also can be connected with a minute timed unit, divide first output terminal of timed unit to be connected with the control end of the 3rd switch, one end of the 3rd switch is connected with an end of second discharge resistance, the other end of second discharge resistance is connected with the other end of charging resistor, the other end ground connection of the 3rd switch, divide second output terminal of timed unit to be connected with the control end of the 4th switch with the 5th switch, the normally closed contact of the 5th switch is connected with the other end of charging resistor, the normally opened contact of the 5th switch is connected with an end of capacitance value measuring apparatus, the normally closed contact ground connection of the 4th switch, the normally opened contact of the 4th switch is connected with the other end of capacitance value measuring apparatus.
2, capacitor testing device as claimed in claim 1 is characterized in that the other end of charging resistor also can be connected with oscillographic input end.
3, capacitor testing device as claimed in claim 2 is characterized in that capacitance value measuring apparatus is the CLR electric bridge.
4, capacitor testing device as claimed in claim 1, it is characterized in that, the fixed contact of the 5th switch is connected with an end of testing capacitor, also is connected with the 4th switch between the other end of testing capacitor and ground, and the fixed contact of the 4th switch is connected with the other end of testing capacitor.
5, capacitor testing device as claimed in claim 1 is characterized in that, first switch and second switch adopt electronic switch components and parts HGTG18N120BND insulated gate bipolar transistor switching tube, and the 3rd switch is an electromagnetic switch.
6, capacitor testing device as claimed in claim 1 is characterized in that the 4th switch and the 5th switch are electromagnetic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043714 CN2812021Y (en) | 2005-07-22 | 2005-07-22 | Capacitor measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043714 CN2812021Y (en) | 2005-07-22 | 2005-07-22 | Capacitor measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2812021Y true CN2812021Y (en) | 2006-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520043714 Expired - Fee Related CN2812021Y (en) | 2005-07-22 | 2005-07-22 | Capacitor measurer |
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| CN (1) | CN2812021Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776722A (en) * | 2010-02-20 | 2010-07-14 | 中兴通讯股份有限公司 | Capacitance test method and system |
| CN102611090A (en) * | 2011-01-19 | 2012-07-25 | 广州市金矢电子有限公司 | Capacitance pulse discharging device and capacitance fling-cut switch |
| CN104635066A (en) * | 2015-03-10 | 2015-05-20 | 李景禄 | Intelligent insulation parameter test residual charge detecting and discharging protection method |
| CN105182201A (en) * | 2015-09-28 | 2015-12-23 | 广东电网有限责任公司电力科学研究院 | Generator stator bar insulation state evaluation method based on low voltage and multiple parameters |
| CN106093641A (en) * | 2016-06-08 | 2016-11-09 | 福州大学 | The DC bias characteristics test circuit of a kind of electric capacity and method of testing |
| CN110108956A (en) * | 2019-04-26 | 2019-08-09 | 华夏天信智能物联股份有限公司 | A kind of dedicated high frequency electric source of the capacitor testing of wide frequency ranges and its test method |
-
2005
- 2005-07-22 CN CN 200520043714 patent/CN2812021Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776722A (en) * | 2010-02-20 | 2010-07-14 | 中兴通讯股份有限公司 | Capacitance test method and system |
| CN101776722B (en) * | 2010-02-20 | 2014-08-20 | 中兴通讯股份有限公司 | Capacitance test method and system |
| CN102611090A (en) * | 2011-01-19 | 2012-07-25 | 广州市金矢电子有限公司 | Capacitance pulse discharging device and capacitance fling-cut switch |
| CN102611090B (en) * | 2011-01-19 | 2017-04-05 | 广州市金矢电子有限公司 | Capacitor pulse electric discharge device, capacitor fling-cut switch |
| CN104635066A (en) * | 2015-03-10 | 2015-05-20 | 李景禄 | Intelligent insulation parameter test residual charge detecting and discharging protection method |
| CN105182201A (en) * | 2015-09-28 | 2015-12-23 | 广东电网有限责任公司电力科学研究院 | Generator stator bar insulation state evaluation method based on low voltage and multiple parameters |
| CN105182201B (en) * | 2015-09-28 | 2017-11-10 | 广东电网有限责任公司电力科学研究院 | Generator stator bar state of insulation assessment method based on low-voltage and multi-parameter |
| CN106093641A (en) * | 2016-06-08 | 2016-11-09 | 福州大学 | The DC bias characteristics test circuit of a kind of electric capacity and method of testing |
| CN106093641B (en) * | 2016-06-08 | 2019-02-01 | 福州大学 | A kind of the DC bias characteristics test circuit and test method of capacitor |
| CN110108956A (en) * | 2019-04-26 | 2019-08-09 | 华夏天信智能物联股份有限公司 | A kind of dedicated high frequency electric source of the capacitor testing of wide frequency ranges and its test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20110722 |