Hi Experts,
I am working on a modem design that is powered by an AC/DC supply (isolated).
The design includes a base board that hosts a mezzanine/daughter card and both
the baseboard and the mezzanine cards are powered by 12V DC.
The chassis walls and misc. mechanical hardware have a conductive coating on
the inside and will be connected to the chassis/safety/earth ground of the
AC/DC power supply.
As the name implies, the chassis/safety/earth ground provides for safety of the
operator if there is a situation where the higher voltage side line of the
AC/DC supply rips off and makes contact with the chassis.
So, I prefer NOT to connect the board logic ground to the chassis/safety/earth
ground of the supply.
Any thoughts on if I should connect them together or not?
Also, if they need to be connected, is there a recommended method?
Really appreciate your help.
Thank you,
Gurushankar
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