When did Commodore start using SMPS power supplies?

[freqmax]

When did Commodore start to use switched-mode power supplies ?

I recall the A500 came with a heavy power box first. And the later model was light as feather with more power available.

[bloodline]

All my Amigas came with traditional transformer based PSUs... I don't recall them ever using switched mode supplies. The Layer supplies were smaller and lighter, but a quick look inside confirms these were still transformer based.

This is from my experience anyway.

[Tension]

IIRC all mine were switched!!  (well, they said 'switched' on the brick, at any rate.)