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NSG 439/439A ESD simulator for robotic solution
Under appropriate ambient conditions, both material objects and even the
human body itself can become charged with electrical energy. This effect is
due to «electrostatics», a phenomenon that has been known since the earliest
times. Thales von Milet (600 BC) noticed how amber attracted very light particles
when it was rubbed. Touching a charged item against a conductive object leads
to a charge equalization through a spark discharge, which produces a brief but
powerfulelectromagneticeld.
3.1. Electrostatic discharge (ESD)
This effect can be explained as follows: Two insulating substances with differing
dielectric constants become charged when rubbed together, i.e. one material
gives electrons to the other one. This effect is known as electrostatic charging.
The same can happen to a person. When somebody walks around in a dry
atmosphere on carpet while wearing shoes with good insulating properties, a
charge of several thousand volts can be built up. If, now, that person comes
closetoaconductivesurface,thechargethatheorsheiscarryingowsaway
through a hefty spark discharge.
Thehighequalizingcurrentthatows,andtheassociatedlargeelectromagnetic
eldthathenceresults,cancauseelectronicdevices(computers,terminals,
process controllers, vehicle electronics, solid state devices, credit or memory
cards, etc.) to malfunction or even be destroyed.
3 iNtroDuctioN
3.2. Simulation
A systematic investigation of electronic equipment and installations to deter-
mine their electromagnetic compatibility (EMC) is, today, a necessity if one is
not prepared to suffer the economic disadvantages that could otherwise ensue.
As a logical consequence, appropriate testing is now a legal requirement for
the sale of electronic products within the EU.
