I like to announce the availability of the large N30 core performance evaluation test. It is the scaled up version of the small N30 core I tested before. You find the video under Movies and Ferrite core systems performance in Joule Thief configuration at the bottom. The direct link for Gold members is here. In my next video I go for a very small ferrite core to round up the comparison chart. This video then will also contain a chart analysis of all tested cores at a glance.