> Some or all of:
> 
>     Static control.
>     Static protection.
> 
> A high humidity atmosphere will reduce electrostatic charge.
> Many companies sell static control surface treatment products eg 3M. 
> Most are not adequate for delicate electronic product protection.

[SNIP]

> Where should I send the invoice ? :-)
> 
> 
>         Russell McMahon

Hi Russell,
	Not to avoid the invoice but even if I find your information very
useful that was not what I meant. I have electrostatic protection procedures
on the assembly area and all products leave the factory working and in
optimal condition.
	
	My question was because some of the feeders (1 out of 40~50) stops
working and in most cases the problem is the DS1307 that is damaged. If I
replace it, everything is up and working again.

	My theory is that ESD is being generated and when the user approach
the machine a discharge is produced trough the 7 segment displays that you
can see on the pictures in the OP links.
	
	So the problem I'm trying to solve is exactly how to protect the
feeder to ESD in the normal use... Should I connect the plastic case to
earth? Would it work?

Best regards....

PS: if you still feel compelled to send an invoice you can send it to 

Mauricio Jancic
Lugones 3238 "B" - C1430ECN
Capital Federal
Republica Argentina

:)) Thanks Russell


Mauricio Jancic
Janso Desarrollos - Microchip Consultants Program Member
info@janso.com.ar
www.janso.com.ar
(54) 11 - 4542 - 3519

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