This is my first post at the forum and I am not an electronics professional so please forgive any mistakes...
I am currently renovating my Apple III (s/n 19971), and I want to choose the best PSU option for my US machine in Europe ...
The subject of 110V-to-230V conversions was already discussed in different threads for Apple IIs, but I would love to know what are your thoughts of using 230/110V tranformers with US/Canadian/Japanese computers instead... and if somebody actually tested changing 115/230V setting at Apple III's Astec AA11190.
First, what is in your opinion the best (read safest) solution for such a vintage PSU: to change the setting at its board (see below) or to use one of the 230/110V autotransformers such as these:
(Sorry all the sites are in Polish but you can use Google Translate)
The second option which I mentioned is to reconnect wiring and change a fuse at Apple III's AA11190. From what I understand, with this PSU only the single wire at the board should be reconnected from 115V to 230V pin, and the 2.75A fuse needs to be changed to 2.5A/250 V one.
Please confirm me on this; I really don't want to burn my power supply...