Solar Mike Guru Joined: 08/02/2015 Location: New ZealandPosts: 1252
Posted: 11:36am 28 Mar 2017
Well theory goes out the window sometimes in the real world when other factors come into play, there are many combinations of builds that are out there, slightly different transformers, different layouts, suspect quality of some Chinese sourced components; these no doubt all have an effect.
>> Has anybody seen details of the 7500W Chinese Inverters that have 2 extra MOSFETs in the gate drive circuits as shown here . Yes they are TIP41C and TIP42C transistors driven by the IR2110 as a totem pole complementary pair, I have one of those boards, will see if I can trace out their circuit connection. Great idea placing them close to the driven mosfets.