Guru
Joined: 02/02/2017
Location: AustraliaPosts: 1470
| Posted: 02:56am 27 Jan 2026 |
it works well, only tested it to 1330W AC so far.
for the 1330W AC output (0.99 power factor), input is 54.7V at 29.1A
1590W in, 1330W out, it's 83.5 % efficient
Rather thin wire is used in the primary circuit, it's 4mm2 I think.
this wire is the primary winding and I need 3 meters of it.
I probably could pick up a few more % if thick stuff was used.
the DC resistance of the primary is 48 mOhm.
(I determined that by putting 5.8A DC through it and reading 281mV across it)
here is a thermal image of it running under this load.
the hottest part is where the low and high side FETs are soldered
sort of where "VS1" and "VS2" are located in the above image.