Marek,

thanks for the info, it seems very usefull to have the possibility to isolate your measuring equipment from ground.
When using 1 inverter, the FG black lead and the scope and SA outer connections would still be connected but isolated from house ground.


Itsu

My mistake, indeed Adrian used a simple katcher with 2SC5200
Maybe this will help :

You're so opened...

Essentials is that transistor is two-port connect. And other facts about mass.

Give me energy now, I don't want to know signals.

Mike, do you still use carpet? Or you so crazy mechanician, that you may think your lab is... perfect? Mental?

www.chomikuj.pl/dxer

DELETE THIS MESSAGE, please, Stefan.

I think we are starting to fill the pages with unrelated junk again !

   conico and All:
   If you haven't seen this video below, or if you have, you might want to watch it, again. 
   It came out 3 days ago.
   Stalker:
   Simple Kacher circuit. 
   https://www.youtube.com/watch?v=sD0iBxNmasE