strong magnetic to AC/DC converter 1

[dogbural]

Hi,

I would like to know if strong magnetic will damage AC/DC converter, especially to photo coupler.

We have some of the converters and they are not working well after being exposed to strong magnetic.

Please advise.
MK

 

[Comcokid]

AC/DC converters today use switch-mode power supply (SMPS) conversion techniques and use many magnetic inductors and transformers driven by MOSFETS or power ICs. If your AC/DC converters were subject to a very strong magnetic field while operating, the external magnetic field could have caused the internal inductors or transformers to magnetically saturate, and this would have damaged the MOSFETS or ICs driving the magnetics.

Photo couplers or optical isolators would not have been directly damaged by external magnetic fields.

 

[dogbural]

Thanks Comcokid,

much appreciated.