CN2744063Y - Electrostatic discharging generator - Google Patents
Electrostatic discharging generator Download PDFInfo
- Publication number
- CN2744063Y CN2744063Y CN 200420109654 CN200420109654U CN2744063Y CN 2744063 Y CN2744063 Y CN 2744063Y CN 200420109654 CN200420109654 CN 200420109654 CN 200420109654 U CN200420109654 U CN 200420109654U CN 2744063 Y CN2744063 Y CN 2744063Y
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- accumulator
- output
- circuit
- high voltage
- polarity switching
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Abstract
The utility model relates to an electrostatic discharging generator, which belongs to the testing field of electromagnetic compatibility (EMC). The prior art has the defects of ingens volume and complicated manufacturing technology. The utility model comprises a high voltage power supply, an accumulator and a discharge circuit. The output terminal of the accumulator and the input terminal of the discharge circuit are connected with each other, and the output terminal of the discharge circuit is connected with a static electricity output port. The earth terminal of the accumulator is linked to the port of the discharge circuit. The utility model is characterized in that the high voltage power supply is a separate direct current high voltage source, a polarity switching circuit is arranged between the direct current high voltage source and the accumulator, and the polarity switching circuit is provided with two input terminals and two output terminals, the two input terminals are respectively connected with the two terminals of the direct current high voltage sources, and the two output terminals are respectively connected with the input terminal of the accumulator and the earth terminal of the accumulator. The utility model decreases the integral volume of the generator, with simple and reliable polarity switching, convenient control and high utilizing rate of space.
Description
[technical field]
The utility model relates to a kind of electro-static discharging generator, belongs to the Electromagnetic Compatibility field tests, is used for Electrical and Electronic equipment (EUT) is applied the simulation static discharge, thereby determines the immunity to interference of EUT to static.
[background technology]
Along with the develop rapidly of science and technology, the rapid emergence of high-new industries such as electronics, communication, space flight and aviation especially needs electronic product miniaturizations day by day, multi-functional and intelligent such as electronic instruments and equipment.High density integrated circuit has become electronics industry to indispensable device in the above-mentioned requirements.This device has that distance between centers of tracks is short, line is thin, integrated level is high, fast operation, low-power and the high characteristics of input impedance, thereby causes this class device more and more responsive to static, is referred to as electrostatic sensitivity device.
The energy of static discharge, influence to traditional electronic component is very little, people are subtle, but to above-mentioned high density integrated circuit element, no matter be the metal oxide device, or bipolar device all may cause inefficacy because of the influence that is subjected to static electric field and static discharge current, perhaps causes " soft breakdown " phenomenon that is difficult to be it is found that, stay potential hidden danger to complete machine, directly influence quality, life-span, reliability and the economy of electronic product.
Therefore, the ability of the anti-electrostatic discharging of equipment becomes the important indicator of estimating its properties of product.This evaluation of indexes normally with electro-static discharging generator requirement in accordance with regulations, is applied corresponding static discharge to EUT, investigate then whether the operating state of EUT normally realize.
The main circuit of existing electro-static discharging generator as shown in Figure 1, comprise high voltage supply source 1, accumulator 3, discharge circuit 4, the output of accumulator 3 links to each other with the input of discharge circuit 4, the output of discharge circuit 4 is connected with static output port 5, the earth terminal of accumulator 3 is connected with discharge loop port 6, wherein, high voltage supply source 1 is made of positive high voltage source U+ and negative high voltage source U-, a their end ground connection, other end polarity is opposite, and links to each other with the input of accumulator 3 with charge switch K2 by the diverter switch K1 that links to each other successively.During work, by diverter switch K1 respectively with change cooperating of positive or negative high voltage power supply output static polarity.Adopt the electro-static discharging generator of this structure, bulky because the high voltage supply source comprises two high-voltage power supplies, the manufacturing process complexity.
[utility model content]
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of electro-static discharging generator, reduces the generator volume to reach, and optimizes the purpose of space structure.
The technical scheme that the utility model adopted is: a kind of electro-static discharging generator, comprise the high voltage supply source, accumulator, discharge circuit, the output of accumulator links to each other with the input of discharge circuit, the output of discharge circuit is connected with the static output port, the earth terminal of accumulator is connected with the discharge loop port, it is characterized in that: described high voltage supply source is an independent dc high-voltage source, between dc high-voltage source and accumulator, be provided with polarity switching circuit, described polarity switching circuit has two inputs and two outputs, its two input links to each other with the two ends of dc high-voltage source respectively, and two outputs link to each other with the input of accumulator and the earth terminal of accumulator respectively.The utility model has substituted in the prior art effect of two high voltage sourcies and charge switch and diverter switch with single dc high-voltage source and polarity switching circuit, helps to reduce the volume of generator, has reduced cost.In addition, polarity switching circuit of the present utility model can be made of one formula, and comparatively reliable with respect to charge switch that sets up separately in the prior art and diverter switch, the polarity switch safety is good.
Polarity switching circuit of the present utility model comprises four diverter switches, and described four diverter switches are connected between the input and an output of polarity switching circuit in twos alternately.So setting operation is convenient, helps better matching with remaining circuit, is convenient to control output polarity.
The utility model is provided with button display circuit and circuit of measurement and control in addition, and is arranged in the separate cavities.So can reduce the interference of external circuit, help improving the reliability of electro-static discharging generator mainboard.
Two separate cavities of the present utility model are formed by shielding division board and generator shell.Can make full use of the shape of generator shell like this, reach good shield effectiveness.
The beneficial effects of the utility model are: reduce the volume of generator integral body, it is simple, reliable that polarity is switched, and is convenient to control, the space availability ratio height.
[description of drawings]
Fig. 1 is the main circuit schematic diagram of existing electro-static discharging generator.
Fig. 2 is the main circuit schematic diagram of the utility model electro-static discharging generator.
[embodiment]
The main circuit of electro-static discharging generator comprises dc high-voltage source 1, polarity switching circuit 2, accumulator 3 and discharge circuit 4 as shown in Figure 2.Wherein:
The earth terminal of accumulator also is connected with discharge loop port 6.
During work, discharge loop port 6 ground connection, static output port 5 links to each other with atmospherical discharges rifle or contact discharge rifle, by the discharge rifle EUT is discharged.
When carrying out the atmospherical discharges test, the closed discharge switch K3 of elder generation, regulate the output voltage of dc high-voltage source 1 then, set the state of diverter switch K4, K5, K6, K7 and make dc high-voltage source 1 give storage capacitor Cs charging according to the requirement of static output polarity by charging resistor Rc, after treating that voltage on the storage capacitor Cs is charged to specified test voltage, disconnect diverter switch K4, K5, K6, K7 and can carry out atmospherical discharges.
When carrying out the contact discharge test, disconnect discharge switch K3 earlier, regulate the output voltage of dc high-voltage source 1 then, set the state of diverter switch K4, K5, K6, K7 and make dc high-voltage source 1 give storage capacitor Cs charging according to the requirement of static output polarity by charging resistor Rc, after treating that voltage on the storage capacitor Cs is charged to specified test voltage, the break-make of control discharge switch K3 can be carried out contact discharge.
Claims (4)
1, a kind of electro-static discharging generator, comprise the high voltage supply source, accumulator, discharge circuit, the output of accumulator links to each other with the input of discharge circuit, the output of discharge circuit is connected with the static output port, the earth terminal of accumulator is connected with the discharge loop port, it is characterized in that: described high voltage supply source is an independent dc high-voltage source, between dc high-voltage source and accumulator, be provided with polarity switching circuit, described polarity switching circuit has two inputs and two outputs, its two input links to each other with the two ends of dc high-voltage source respectively, and two outputs link to each other with the input of accumulator and the earth terminal of accumulator respectively.
2, electro-static discharging generator according to claim 1 is characterized in that: described polarity switching circuit comprises four diverter switches, and described four diverter switches are connected between the input and an output of polarity switching circuit in twos alternately.
3, electro-static discharging generator according to claim 1 is characterized in that: described electro-static discharging generator is provided with button display circuit and circuit of measurement and control in addition, and is arranged in the separate cavities.
4, electro-static discharging generator according to claim 3 is characterized in that: described two separate cavities are formed by shielding division board and generator shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109654 CN2744063Y (en) | 2004-11-05 | 2004-11-05 | Electrostatic discharging generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109654 CN2744063Y (en) | 2004-11-05 | 2004-11-05 | Electrostatic discharging generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2744063Y true CN2744063Y (en) | 2005-11-30 |
Family
ID=35634079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420109654 Expired - Fee Related CN2744063Y (en) | 2004-11-05 | 2004-11-05 | Electrostatic discharging generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2744063Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508066A (en) * | 2011-10-26 | 2012-06-20 | 杭州远方仪器有限公司 | Electrostatic discharge generator |
| CN105676039A (en) * | 2016-03-24 | 2016-06-15 | 北京大学 | Electrostatic static discharge generator circuit |
| CN107515334A (en) * | 2016-06-15 | 2017-12-26 | 上海索莘电子有限公司 | A kind of static discharge high frequency magnetic field interferance generator |
| CN109752610A (en) * | 2018-12-10 | 2019-05-14 | 大族激光科技产业集团股份有限公司 | Static release circuit and Electro-static Driven Comb generator |
-
2004
- 2004-11-05 CN CN 200420109654 patent/CN2744063Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508066A (en) * | 2011-10-26 | 2012-06-20 | 杭州远方仪器有限公司 | Electrostatic discharge generator |
| CN102508066B (en) * | 2011-10-26 | 2016-02-10 | 杭州远方仪器有限公司 | A kind of electro-static discharging generator |
| CN105676039A (en) * | 2016-03-24 | 2016-06-15 | 北京大学 | Electrostatic static discharge generator circuit |
| CN105676039B (en) * | 2016-03-24 | 2018-07-03 | 北京大学 | A kind of electro-static discharging generator circuit |
| CN107515334A (en) * | 2016-06-15 | 2017-12-26 | 上海索莘电子有限公司 | A kind of static discharge high frequency magnetic field interferance generator |
| CN109752610A (en) * | 2018-12-10 | 2019-05-14 | 大族激光科技产业集团股份有限公司 | Static release circuit and Electro-static Driven Comb generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |