Originally Posted by Whimsical
Not visa versa
It is just an inverter
where the input range is 90 - 255 volts. I presume auto ranging, and the output can be either 110 or 220v. Output frequency can be either 50 or 60 hz and would be independent of the input frequency.
Sounds like the ideal solution for a cruiser. Buy the output that suits the installed appliances
it in anywhere.
Switch mode just means a type of power supply that uses dc, or rectified ac, which is switched on and off at a high rate, typically 20 khz.This is stepped up or down through a small ferrite transformer to what is required. If the device has a dc output the quazie ac is rectified and filtered. If it is an inverter
the input switching is done to create an output that is more sineusoidal in shape. This is then filtered to become a true sinewave. The squarewave or semi sinewave inverters don't control the input properly nor are they filtered well so the output in rougher. The high frequency allows the use of small and light weight transformers.
All dc to dc, ac to dc and inverters are basically small variations on the same theme.
The output can be fully isolated from the input so it would act as a traditional transformer in regards to galavanic isolation as well. Seems an ideal solution except for susceptability to lightning
that a traditional tranny would better handle.
If you're referring to the Mastervolt switching isolation transformer, es101 is right, buried in the manual it says it puts out the same voltage as goes in. I'm kind of surprised at this because I assumed it would have been easy to make a switcher that is autoranging input, maybe even switch selectable output.
If you are refering to the Victron that was in the quoted section of your post, that is just a regular isolation transformer that is center tapped on both the primary and secondary coils, so four choices exist, 120-120, 120-240, 240-240, 240-120.