An ESD demonstrator system for evaluating the ESD risks of wearable devices

An ESD demonstrator system was designed to demonstrate the levels of transient fields that a wearable device can be subjected to. The system can detect pulses as short as 1-2 ns and was used to evaluate the fields associated with a brush-by discharge from a waist mounted device. The presence of a higher field level at the same voltage for a body worn device discharge indicates a higher risk for body worn devices compared to the HMM discharge specified by the IEC-61000-4-2 standard.