|
Hello Glen,
To potentially state the obvious, it's important to track this down, not only for human comfort reasons, who likes to be shocked anyway, but also for equipment protection reasons. If it is an electrostatic discharge this can be of considerable danger to the health of sensitive electronics, such as those in computers, cameras, etc..
Perhaps use a multimeter to look at the voltage differences in and around your gear, even relative to your own body. You might need to use a maximum hold function to possibly catch any transient discharge. You could also check current.
I'm not saying it is static, but if humidity is very low this can increase the incidence of electrostatic discharge. This is a consideration in building air conditioning and I've seen it more prevalent as relative humidity approaches 30%.
Failing all that and given its reoccurrence, maybe you have an excessive leakage current from one of your connected devices. Perhaps use a multimeter or a brute finger shock test to determine the culprit by the process of elimination as you remove one item of gear at a time and then retest your setup for the same shock/ESD.
The problem may stem from a difference in the ground potentials of your devices and this may provide a solution , i.e: adopt a common ground, but I wouldn't force that until I'd zeroed in on the culprit by elimination.
Good luck
Best
JA
|