110v supply

#1

Is there a 110v supply in the space or what’s the cheapest way to make or buy one?

5amp max, probably 3a. I’ll check

#2

There is not, what are you trying to do?

You can buy transformers for about £75…

#3

I’ll get one of those one day. 2nd hand Ebay bargains if you collect.

It’s for an American battery charger

#4
2 Likes
#5

Looks good thanks. I’ll probably get one as it seems useful.

The charger is 110-120v and 110w

Using my rudimentary knowledge of electricity:

watts = volts X amps

So 110watts % 110volts = 1 amp

I notice that a fair amount of modern low amp devices take 100-220v eg. Laptops, etc.

And PC power supplies often have a 110/220v switch.

How are they doing this?

I assume it’s by using a circuit similar to that in the step up/down device above?