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Posted: 07:55am
06 Dec 2025
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Bryan1
Guru


Went upto Rogers after work today and what a learning experience it was helping solder on the wire to the board  

So VS1 & VS2 now have 50sqmm wire on each pad and had enough length off the toroid wire for the battery connect so 65sqmm




So the 50sqmm wire for VS1 & Vs2 will be bent down to attach to each choke, now we did measure the inductance using Rogers meter and both chokes came in a 24uH within a point of each other so good to see they are matched.

Now I did mention about charging the caps before turn on and suggested the battery connect would do it and got told well the inrush of current to charge the caps will show the fireworks   and a bleed resistor is required to limit the current on the positive rail to charge the caps. So lesson learned and that is one thing I never read in all the reading on this inverter.

So one step closer.

Regards Bryan
 
Posted: 06:54am
10 Dec 2025
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Bryan1
Guru


Well in my gear I did find 3 off 40 watt 200ohm resistors that all measure within 3 ohms so I could use one of them to slowly charge the caps before the first turn on.

Now for members that have build this inverter how did you guy's go about charging the caps

Regards Bryan
 
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