[sdiy] Signals leaking into the PSU?

[Ingo Debus]

> Am 20.02.2023 um 11:06 schrieb rburnett at richieburnett.co.uk:
> 
> There are literally loads of products on sale in the UK that break this rule though.  Right now I have an anglepoise lamp and a free standing Ikea lamp next to me that both have a significant metal "chassis" but are marked as class-2.

Of course a class-2 device can have a metal housing. Also, it does not matter if it’s a wall wart or something else with a built-in power supply. The important thing is, for class-2 there has to be a double or reinforced insulation between mains circuits and touchable parts. Ever wondered why inside Hifi equipment the insulated mains cables are put into extra sleeves? That’s for „double insulation“.

Ingo


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