Bryan's Inverter build

Author	Message
wiseguy Guru Joined: 21/06/2018 Location: Australia Posts: 1173	Posted: 03:54am 09 Oct 2023       Good to see your progress Bryan. The 2 x toroids I have are 3.5KW Aerosharps like yours but a subtly slightly different version. The primaries on mine are 230V & 195T the secondary's are 250V & 212T. I intend to remove 17T from the 250V windings, which luckily are the outer winding so I will have 2 secondary's of 230V & in parallel. I calculated that at 5KW load with a single secondary the R losses are ~50W but with the two in parallel it will be ~ 25W.  The idling power will not change, just the efficiency (and lower heat produced) under high load. I may have written the turns for the primary and secondary in texta on the outside of your toroid?  I'm getting old and it was a long time ago so I don't remember now... So the 17T removed for mine I am sure will be a few turns different for your toroid. I am guessing that having finished the build, the thought of dismantling and unwinding some turns on one winding will not be greeted with a whole lot of enthusiasm ? Edited 2023-10-09 14:00 by wiseguy