Hopefully? Another 48vdc-240vac Toriod Inverter build.

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KeepIS Guru Joined: 13/10/2014 Location: Australia Posts: 1860	Posted: 12:42am 26 May 2023         analog8484 said   Just curious, which components besides the transformer cores were the most expensive?  Choke cores? Caps? MOSFET's? The Mosfets were really low cost, I purchased 50 X HY5606W from LCSC.COM, wiseguy and others users have suggested them as being about the best reliable source. After going through all the parts I purchased from them, it's pretty obvious they are the real deal.   I didn't even bother matching the FETS, or even checking then. Everything came in the correct package, FETS in the correct long plastic casings, not loose in bag or wrapped in block of tape like other sources, and cost no more then the usual crap, they also supply most of the devices used in this build, including the littler DC-DC supplies. Nice when you can get almost everything from one source. The most expensive items were the CAPS, partly because I got them from a big AU electronics supplier, almost every other source had no stock of Screw CAPS in the values I wanted, these units has full data sheets including real current ratings and temperature, voltage testing under various conditions. I had bought some name brand CAPS prior to these, after testing them I would not trust those to filter a 1.5v transistor radio supply, OK.. slight exaggeration, but you get the drift.             IMHO the FETS, obviously, and the CAPS are BOTH critical to the reliability and life I expected from this inverter build, built it once, build it right. Toriods were scrounged from old Grid-tie sunny Boy inverters, I paid $150 for 3, but the ones I wanted are getting really hard to find and the price for one is sometimes twice what I paid for 3, I didn't want to chance waiting and miss out on them. Toriod Choke Cores from the Grid-tie units and one other Grid-tie, can't remember names but I scrounged around and found a few for free, I stripped them all for parts. But those Toriod Choke cores are a low price from China, I think I purchased two extra from there.     A very expensive overall system component though was 2G, 0G and 00G cable, I was gifted some 2G and 0G, but the shortfall (I didn't bother with 00G) cost me $200.00 - I was desperate -- what can I say crazy prices.     . Edited 2023-05-26 10:44 by KeepIS