Good money after bad - Solar upgrade time


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oreo

Senior Member

Joined: 11/12/2020
Location: Canada
Posts: 138
Posted: 03:20am 03 Jul 2024      

So for an inverter, I have been using an 8010 design using a PCB board designed by Awesome Tech on Youtube. They share the design, so I had 5 made.  This uses sets of 6 TO-220 fets.  It has worked fine these last few years, so I decided to just upgrade the FET's and send it.

The initial FET's I was using were IRFB4227PBF (120v, max .024 ohms).  The best cost/performance device I could find a while ago was the Toshiba TK72E12N1 (120v, max .044 ohm).  It looks like there are some other China company options available now, but I pulled the trigger about a year ago and bought the Toshiba ones.

One nice thing about 2oz copper boards, is they de-solder nicely.  I revised the heat sinks too.





I modified Tinkers overcurrent/shutdown design slightly.  It appears to work well, but I do have some more testing to do.