Tecnipass Light Box
Note the strong sound and brightness of these sparks that exceed 2 cm (2 * 1 cm in series)
Dielectric strength of dry air # 3 kV per mm for here 25 mm: 750 kV minimum!
You can increase the arc or use any other conductor!
Experience as with HT lines, high voltage, non-isolated ...
Here is how a conductive element too ready (carbon rod ...) can boot!
The multimeter uses the yellow wire that is near the arc
There are stray voltages of 15 Volts and more! Despite the yellow insulation
We even just observed a 'reset' bug due to the arcs
A peak at 800 V!
If the measuring wire is bare: Catastrophe it is the reset assured!
Each pulse now re-initializes the device!
The floating potentials are harmful, they capture everything!