On Thu, Jul 24, 2003 at 04:10:39AM -0800, Elbert Smit wrote:
> > Where abouts are you applying the ESD? (case, window etc.?)
>
> Metal part of the housing, no earthing available.
Are all metallic parts (of the housing and other parts) connected together?
If not you will have some sparks at overlapping positions and more problems...
>- The metal part is connected to the ground layer of the PCB
Is there one connection or more than one? You can have currents through
the PCB layer that create high voltages in other wires...
>- The PCB contains a transzorb like component (one direction)
Is it fast enough? Maybe 10�s are too slow.
Matthias
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Author: Matthias Weingart
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