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Old January 14, 2017, 08:44 AM   #140
Junior member
Join Date: February 27, 2015
Posts: 1,768
Did you cut a slot in the ferrite?
A solid 'O' ferrite won't work, you need ends (poles) to focus magnetic energy

Ferrite has different values, I find 'Green' (painted or paint stripe) works best, but I have no idea how to test these things for their magnetic value, so I'm at the mercy of experimentation.
Maybe one of the EE's can explain the values and what we should be looking for...

Adding capacators have helped other people, increasing the 'Energy Tank' size.
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