Time for a new Warpinverter build

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Haxby Guru Joined: 07/07/2008 Location: Australia Posts: 427	Posted: 10:03am 12 Apr 2021         rogerdw said     Haxby said   Hold on, let me get this straight. Two 3kw transformers with the same voltages, power ratings, etc, both out of Aero-sharp inverters but from two different transformer manufacturers. The Hefei Ecu-Tamura brand: -looks neat and tidy on the outside -is a little smaller physically - windings are more neatly wound But - the core is made from rusty offcuts. Whereas the Eaglerise brand: - looks more messy on the outside - is a little bigger - windings are pretty messy - internal core better quality with lower measured core losses. Is that right? Nah Phil, somehow you've mixed that up. This is the correct summary  ... The Hefei Ecu-Tamura brand: - looks more messy on the outside - is a little bigger - windings are pretty messy And - the core is made from rusty offcuts. Whereas the Eaglerise brand: -looks neat and tidy on the outside -is a little smaller physically - windings are more neatly wound - internal core better quality with lower measured core losses. Note: I haven't removed the mylar from the neat looking Eaglerise toroids yet to see if their cores are better or worse, though certainly don't expect them to be worse. Ok, so one brand is better in every way, and the other brand is worse in every way..... Good! Very good! But I think you still inadvertently swapped the brand names around. The Hefei Ecu-Tamura transformers I have here are smaller and neater than the Eaglerise.