Static charge warning device

Details Static charge warning device Static charge warning device

1999-03-25

2000-11-21

Lieu, Julie

Communications: electrical

Condition responsive indicating system

Specific condition

340649, 340660, 361212, 361220, 324457, G08B 2100

Patent

active

061509450

ABSTRACT:
A wearable device for alerting a user when a static electrical charge has developed on the user which exceeds a preset limit, prior to an accidental discharge of the static charge. The device includes a first conductive element in close proximity to the user and a second conductive element spaced a further distance from the user than the first conductive element. A high impedance differential amplifier provides a voltage signal proportional to the potential difference existing between the first and second conductive elements. A voltage level discriminator receives the voltage signal from the high impedance differential amplifier and triggers an alarm if the voltage signal exceeds a predetermined limit.

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