Re: Blinkie switched by welding



J

Jim Smith

Guest
Ted <[email protected]> writes:

> The other day I was welding (TIG with high-frequency arc start) in my
> garage with bicycles nearby, and noticed that several blinkies had been
> turned on without my touching any of them.
>
> Anybody care to comment on how that happens?


FETs have a very high input impedence. They are basicaly voltage
operated, very few electrons need to wriggle through to turn them on.
Electric and magnetic fields are related, as per Maxwell.

It could be worse, you could be hearing VOA on your fillings.