@37:38 where you have the PCB not grounded to the metal enclosure & the enclosure is NOT grounded thru a low-impedance connection, are you assuming that the reference voltage for the PCB is an earth-ground referenced power supply? If it's an isolated, floating supply, like a battery, would ESD still couple onto the PCB then thru parasitic capacitance between the chassis and PCB in that case?
When ESD currents are discharged to ground, is it going to cause ground level shift to the components in its return path? For dev boards without casing, I wouldn't have separate chassis ground. I know that TVS diodes need to be placed close to connectors, but just in case esd strike happens at the inner region of the board.
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I finally had time to watch. Very well explained. Thank you!
Glad it was helpful!
High quality Educational Content! Thank you Dario
Glad you enjoyed it!
first view, first comment; Nice video as always, thank you sir
Thanks for watching!
@37:38 where you have the PCB not grounded to the metal enclosure & the enclosure is NOT grounded thru a low-impedance connection, are you assuming that the reference voltage for the PCB is an earth-ground referenced power supply?
If it's an isolated, floating supply, like a battery, would ESD still couple onto the PCB then thru parasitic capacitance between the chassis and PCB in that case?
When ESD currents are discharged to ground, is it going to cause ground level shift to the components in its return path?
For dev boards without casing, I wouldn't have separate chassis ground.
I know that TVS diodes need to be placed close to connectors, but just in case esd strike happens at the inner region of the board.