Quote:
Originally posted by abacus:
Hi Dennis

Here is a pretty good description of how a switched power supply works. (Not as accurate as the technical text I normally used for work, but at least it’s pretty easy to understand)

As you can see, unless it’s designed for dual voltage input, (More expensive) then only 1 input voltage is allowed. (There is a Big difference between a switch mode power supply and a universal switch mode power supply, therefore as was previously mentioned, do not assume anything)
http://en.wikipedia.org/wiki/Switched-mode_power_supply

Bill



Also there is this paragraph from the same document.......

"Switched-mode PSUs in domestic products such as personal computers often have universal inputs, meaning that they can accept power from most mains supplies throughout the world, with rated frequencies from 50 Hz to 60 Hz and voltages from 100 V to 240 V (although a manual voltage "range" switch may be required)."

As I said, I should have worded my previous post as a "universal switched mode power supply"

Look, all it was, was a simple case of I missed Lee7's post which said the Tyros 3 had a fixed power supply.

But having said that, and based on that Wiki (thanks for the link btw), I will now refer to them as "Universal Switched Power Supplies" so there is no confusion in what I mean.

Dennis