Bryan's Inverter build


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KeepIS

Guru

Joined: 13/10/2014
Location: Australia
Posts: 1848
Posted: 10:40pm 11 Oct 2023      

  Revlac said  
The EI transformer inverter I did, was about 20w running as an Inverter, I don't call that Horrendous, I cant find the 230vac idle test but I think it was around 7w give or take abit.
As with some ready wound toroids, The same rule also applies to EI transformers, they need more turns added on to get the idle down to a somewhat manageable level (not easy to do if its already assembled and no real estate left) and also needs a good choke, still not near as efficient as a toroid.


That is good to know, the ones I tested were really bad, they were not the big units shown in the pictures.

It will be interesting to see how these big Welder units go.

BTW if you happen to remember where the transformers you used came from I would like to know, as they my be handy for a beefy backup Inverter, at the moment I'm having trouble getting the toriods I want to use.
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Edited 2023-10-12 08:41 by KeepIS