Various aspects of home brew inverters


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noneyabussiness
Guru

Joined: 31/07/2017
Location: Australia
Posts: 526
Posted: 01:46pm 22 Oct 2017      

Poida, i dont know if it of any relevance, but i had a 10kw inverter (based on the PJ control card) and i could not get it to work... blew every power board i threw at it (many mosfets met there doom) but on the smaller transformers i was testing with it would run fine, as soon as i connected it to the monster transformer it would self destruct. They had the same " voltage " input/output and the big tranny was professionally wound... i spent months trying to figure out why it would blow up. Even with brand new PJ gear it would last tops a day...

To cut a very long and painful story short, i ended up (under advice sort of) putting 10 .1 ohm resistors ( so .01 ohm total resistance ) in series with the primary. .. that thing has seen over 11.5 kw for over half an hour without missing a beat..😎Edited by noneyabussiness 2017-10-24