CN202075333U - Surge current tester - Google Patents
Surge current tester Download PDFInfo
- Publication number
- CN202075333U CN202075333U CN2011201444800U CN201120144480U CN202075333U CN 202075333 U CN202075333 U CN 202075333U CN 2011201444800 U CN2011201444800 U CN 2011201444800U CN 201120144480 U CN201120144480 U CN 201120144480U CN 202075333 U CN202075333 U CN 202075333U
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- surge current
- converting circuit
- switch
- direct current
- surge
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Abstract
The utility model discloses a surge current tester which comprises a direct current switching circuit, a capacitor and a switch, wherein the direct current switching circuit is connected with an alternating current power supply and can switch alternating current into direct current, the capacitor is connected in parallel at a direct current output end of the direct current switching circuit and can be charged by the direct current output by the direct current switching circuit, and the switch is connected in series at the direct current output end of the direct current switching circuit and is used for controlling the discharging of the capacitor. The surge current tester ensures that electric equipment is at the highest point or the lowest point (90 degrees or 270 degrees) of an alternating current sine wave instantly when being conducted with the power supply, and can accurately simulate maximum surge current of the equipment instantly when being conducted with the alternating current. The surge current tester is simple in structure, low in cost, high in stability, and suitable for all the electric equipment.
Description
Technical field
The utility model relates to testing current equipment, particularly a kind of surge current tester.
Background technology
As everyone knows, all consumers all can produce very big surge current in the moment of its input AC electricity, promptly flow into the peak point current of power-supply device.Because input filter capacitor charges rapidly, so this peak point current is far longer than the stable state input current, therefore need the surge current tester to measure the surge current of electrical appliance, so that the surge level that components and parts such as restriction power switch, rectifier bridge, fuse, EMI (Electromagnetic Interference, electromagnetic interference (EMI)) filtering device bear.In the electrical appliance of alternating current, because alternating current is sinusoidal waveform, only when going up, energized electrical equipment just can produce maximum surge current at the highs and lows (90 degree or 270 degree positions) of sine wave.Use switch directly to measure the incoming line of alternating current, can not guarantee to connect electric moment is ceiling voltage, the electric current of alternating current, the surge current maximal value that the result who obtains differs and is decided to be equipment.
The utility model content
Fundamental purpose of the present utility model provides a kind of surge current tester, is intended to measure more exactly the maximum surge current value of consumer.
The utility model proposes a kind of surge current tester, comprising:
DC converting circuit can be connected with AC power and alternating current is converted to direct current;
Electric capacity is connected in the DC output end of described DC converting circuit in parallel, is charged by the direct current of described DC converting circuit output;
Switch is serially connected in the DC output end of described DC converting circuit, is used to control described capacitance discharges.
Preferably, also comprise the surge current value arrangement for detecting between the DC output end of the power input that is connected equipment under test and described DC converting circuit, described surge current value arrangement for detecting is used to detect equipment under test in the energized surge current value of moment.
Preferably, described DC converting circuit is a rectifier bridge.
Preferably, described rectifier bridge is the rectifier bridge of full-bridge or semibridge system.
Preferably, the withstand voltage of described electric capacity is higher than the maximum voltage value of the external ac power source sine wave of connection.
Preferably, described electric capacity is electrochemical capacitor.
Preferably, described switch is universal switch, contact-making switch, relay, controllable silicon or metal-oxide-semiconductor.
Preferably, the rated power of described DC converting circuit and electric capacity is greater than the power of equipment under test.
The utility model is converted to direct current by DC converting circuit AC power alternating current, direct current by DC converting circuit output charges to electric capacity, after electric capacity is full of, the output of surge current tester is connected on the power input of tested consumer, switch is controlled described capacitance discharges, and the moment of Closing Switch, surge current value arrangement for detecting can test out the maximum surge current that tested electricity consumption is provided with, the closed and disconnected of repeat switch is repeatedly measured surge current.This surge current tester has guaranteed that consumer is the peak or the minimum point (90 degree or 270 degree) of alternating current sine wave in energized moment, it is the maximum voltage position, and the low impedance characteristic of simulation electrical network, can the most accurately simulate the maximum surge current of equipment in the moment of connecting alternating current.This surge test instrument circuit is simple, and cost is low, and the reliability height can be applicable to all consumers.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model surge current tester one embodiment.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
With reference to Fig. 1, an embodiment of a kind of surge current tester of the present utility model is proposed, the surge current tester comprises DC converting circuit 100, capacitor C and K switch, wherein,
Capacitor C is connected in the DC output end of described DC converting circuit 100 in parallel, is charged by the direct current of described DC converting circuit 100 outputs; The both positive and negative polarity of capacitor C is connected with the both positive and negative polarity of the DC output end of described DC converting circuit 100 respectively, when DC converting circuit 100 is electrically connected with external communication, capacitor C will be in galvanic charged state always, until reaching and the identical ceiling voltage of external communication electricity, the ceiling voltage of capacitor C charging just is equivalent to the high electric voltage of external AC.
K switch is serially connected in the DC output end of described DC converting circuit 100, is used to control the discharge of described capacitor C.K switch is in off-state always, and after connecting tested consumer, with this K switch closure, described capacitor C is promptly at its ceiling voltage of abrupt release.
Also comprise the surge current value arrangement for detecting 400 between the DC output end of the power input that is connected equipment under test 300 and described DC converting circuit 100; Described surge current value arrangement for detecting 400 is used to detect equipment under test 300 in the energized surge current value of moment.After above-mentioned K switch closure, described capacitor C is promptly imported tested consumer at its ceiling voltage of abrupt release, and surge current value arrangement for detecting 400 can detect the maximum surge current value of consumer.
The utility model is converted to direct current by DC converting circuit 100 AC power 200 alternating currents, direct current by DC converting circuit 100 outputs charges to capacitor C, after capacitor C is full of, the output of surge current tester is connected on the power input of tested consumer, K switch is controlled the discharge of described capacitor C, the moment of Closing Switch K, surge current value arrangement for detecting 400 can test out the maximum surge current that tested electricity consumption is provided with, the closed and disconnected of repeat switch K can repeatedly be measured surge current and average.This surge current tester has guaranteed that consumer is the peak or the minimum point (90 degree or 270 degree) of alternating current sine wave in energized moment, it is the maximum voltage position, and the low impedance characteristic of simulation electrical network, can the most accurately simulate the maximum surge current of equipment in the moment of connecting alternating current, this surge test instrument circuit is simple, cost is low, and the reliability height can be applicable to all consumers.
Further, described DC converting circuit 100 adopts rectifier bridge, and this rectifier bridge can adopt the rectifier bridge of full-bridge or semibridge system again.Use rectifier bridge that the alternating current of outside is converted to direct current energy, the voltage that drops on the rectifier bridge is very little, can ignore, and just can make the direct current ceiling voltage of output be equivalent to the ceiling voltage of alternating current.
The withstand voltage of described capacitor C is higher than the maximum voltage value of external ac power source 200 sine waves of connection, can prevent effectively that capacitor C is breakdown.
Described capacitor C is an electrochemical capacitor, and the electric capacity of electrochemical capacitor unit volume is very big, than the electric capacity big tens of other kind to hundreds of times; The specified capacity of electrochemical capacitor can be accomplished very big, can accomplish several ten thousand μ f even a few f easily; The electrochemical capacitor price is more much lower than the electric capacity price of other kind, because the composition material of electrochemical capacitor all is common industrial materials, such as aluminium etc.The equipment of making electrochemical capacitor also all is common commercial unit, can large-scale production, and cost is relatively low.
Described K switch is the element that universal switch, contact-making switch, relay, controllable silicon or MOS (metal (metal) monoxide (oxid)-semiconductor (semiconductor) field effect transistor) etc. have switching characteristic.
The rated power of described DC converting circuit 100 and electric capacity could accurately detect the maximum surge current value of equipment under test 300 greater than the power of equipment under test 300.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure transformation that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1. a surge current tester is characterized in that, comprising:
DC converting circuit is connected with AC power and alternating current is converted to direct current;
Electric capacity is connected in parallel on the DC output end of described DC converting circuit, is charged by the direct current of described DC converting circuit output;
Switch is serially connected in the DC output end of described DC converting circuit, is used to control described capacitance discharges.
2. surge current tester according to claim 1, it is characterized in that, also comprise the surge current value arrangement for detecting between the DC output end of the power input that is connected equipment under test and described DC converting circuit, described surge current value arrangement for detecting is used to detect equipment under test in the energized surge current value of moment.
3. surge current tester according to claim 2 is characterized in that, described DC converting circuit is a rectifier bridge.
4. surge current tester according to claim 3 is characterized in that, described rectifier bridge is the rectifier bridge of full-bridge or semibridge system.
5. surge current tester according to claim 3 is characterized in that, the withstand voltage of described electric capacity is higher than the maximum voltage value of the external ac power source sine wave of connection.
6. according to each described surge current tester in the claim 1 to 4, it is characterized in that described electric capacity is electrochemical capacitor.
7. surge current tester according to claim 6 is characterized in that, described switch is universal switch, contact-making switch, relay, controllable silicon or metal-oxide-semiconductor.
8. surge current tester according to claim 6 is characterized in that the rated power of described DC converting circuit and electric capacity is greater than the power of equipment under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201444800U CN202075333U (en) | 2011-05-09 | 2011-05-09 | Surge current tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201444800U CN202075333U (en) | 2011-05-09 | 2011-05-09 | Surge current tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202075333U true CN202075333U (en) | 2011-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201444800U Expired - Lifetime CN202075333U (en) | 2011-05-09 | 2011-05-09 | Surge current tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN202075333U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865513A (en) * | 2015-06-05 | 2015-08-26 | 山东晶导微电子有限公司 | Surge current testing circuit with function of detection |
| CN106546895A (en) * | 2016-10-13 | 2017-03-29 | 全球能源互联网研究院 | A kind of diode surge capability test circuit and its control method |
| CN107102198A (en) * | 2017-06-26 | 2017-08-29 | 苏州大学 | Portable DC load current real- time recorder |
| CN107843759A (en) * | 2017-09-28 | 2018-03-27 | 北京空间技术研制试验中心 | The surge current test system and method for testing of electronic equipment in spacecraft |
| CN110988447A (en) * | 2020-01-04 | 2020-04-10 | 广东新成科技实业有限公司 | Circuit diagram of surge current impact tester |
| CN113552475A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Current surge test device |
-
2011
- 2011-05-09 CN CN2011201444800U patent/CN202075333U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865513A (en) * | 2015-06-05 | 2015-08-26 | 山东晶导微电子有限公司 | Surge current testing circuit with function of detection |
| CN104865513B (en) * | 2015-06-05 | 2017-06-06 | 山东晶导微电子有限公司 | A kind of surge electric current test circuit for carrying detection function |
| CN106546895A (en) * | 2016-10-13 | 2017-03-29 | 全球能源互联网研究院 | A kind of diode surge capability test circuit and its control method |
| CN106546895B (en) * | 2016-10-13 | 2021-08-20 | 全球能源互联网研究院 | Diode surge performance test circuit and control method thereof |
| CN107102198A (en) * | 2017-06-26 | 2017-08-29 | 苏州大学 | Portable DC load current real- time recorder |
| CN107843759A (en) * | 2017-09-28 | 2018-03-27 | 北京空间技术研制试验中心 | The surge current test system and method for testing of electronic equipment in spacecraft |
| CN110988447A (en) * | 2020-01-04 | 2020-04-10 | 广东新成科技实业有限公司 | Circuit diagram of surge current impact tester |
| CN113552475A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Current surge test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |