The Natural Philosopher wrote:

I worked once on a scope design that was happy from 36V DC (what an
aircraft raising its undercarriage drops to) to 250VAC. all on the same
PSU with no taps changed.

My rechargeable razor is ok from 12 Vdc to 240 Vac, which is
really handy when spending time in my touring caravan.

It is so useful, but no longer available, that when the battery
lost capacity, I soldered in a new one.

Chris
--
Chris J Dixon Nottingham UK
@ChrisJDixon1

Plant amazing Acers.