Electricity: electrical systems and devices – Electric charge generating or conducting means
Patent
1993-09-17
1995-07-04
Strecker, Gerard R.
Electricity: electrical systems and devices
Electric charge generating or conducting means
324 725, 324122, 324149, 324452, 324228, 324537, H01T 2300, G01R 3100, G01R 1900, G01R 106
Patent
active
054306043
ABSTRACT:
An electrostatic discharge generator device for generating/simulating controlled electrostatic discharges, in both positive and negative polarities is disclosed for testing electronic equipment. The device includes an electrically conductive body with an attached contact probe mounted thereon and insulated therefrom. The device includes a high voltage generator and a mechanism to operate the generator. An impedance element is electrically connected to the generator. An electrical coupling interconnects the impedance element and the probe and has a spark gap formed therein. The spark gap is located in a sealed, vacuum or gas filled, chamber. The width of the spark gap determines in part the voltage level and signal characteristic of the ESD. Because of the conductive body, no ground wire is required from the equipment-under-test to the generator, as the human body of the user is used to complete the electric circuit loop. The spark gap is located near the contact probe providing a realistic simulation of a human direct air electrostatic discharge. The generator can be attached with alternative probes to generate electric fields and/or magnetic fields for testing the other components of electromagnetic interference generated by an electrostatic discharge.
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