|MadSci Network: Computer Science|
I'm not sure what, you mean with "the high voltage static field"? In general a high voltage static field will cause lateral voltages in the conductors and semiconducting signal pathes of the device. When such voltages get to the level of switching voltages in the device, the device will act unpredictably. The effect may even vary depending on the direction of the static field, which the device is exposed to. This effect is the electrostatic equivalent to the Hall effect (magnetic deflection of moving electrons), which is used in some keyboards to recognize down- and up-transitions of keys. Only shielding the device can prevent the effect, grounding alone does not help.
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