This morning I read some news about iPhone 12 Pro causing interferences with pacemakers (
https://www.allaboutcircuits.com/news/apples-devices-unsafe-a-lesson-on-the-importance-of-emi-side-effects/). Apparently, the permanent magnets used for aligning the wireless charger produce a magnetic field above the maximum allowed by medical devices to operate correctly.
As I haven’t designed commercial circuits that use any kind of permanent magnet before, that made me curious about the maximum allowed magnetic field caused by permanent magnets to know if that’s something normal or if it should have been taken into account before commercialization as the article suggest. Therefore, I searched the iPhone 12 Pro Max manual to check which standards it needs to fulfill to be commercialized in Europe (
https://manuals.info.apple.com/MANUALS/1000/MA1964/es_ES/iphone-12-pro-max-ios14-info-y.pdf). To my surprise, even though it warns the user about the possibility of interferences with medical equipment, the manual does not include any measurements about that. I also look for those limitations in the EMC regulation (it is not son uncommon that commercial devices do not fulfill completely the required regulation to get the CE mark in my experience, as in a subject I took while I was studying my MSc degree in electronics we tested the computer screens that the university had and none of them fulfilled the conducted emissions regulation)
Consequently, it seems that the maximum magnetic field caused by permanent magnets in commercial devices is unregulated, yet I still that a bit extra be if they can interfere with pacemakers. As I might have missed it, do you know if there is any separate regulation that covers that?
Just in case someone is interested in those computer screens, they used a diode-capacitor rectifier without any kind of PFC. My university had found that some years before and notified it, but they made us test them to show us that you shouldn’t always belief the measurements provided in the users manual
P.S.: I’m relatively new in this forum and I’m not sure if this is the most adequate board for this question (I chose it because it contained the previous topics about CE certification of electronics product), so feel free to move it should be in another one. Sorry for the inconvenience