Uploaded February 2012 | Updated September 2026, 1 week ago
Making a small break with my high voltage testing, because i fried a lot of things and have to think a bit, i stumble upon a thread at OU from Sergdo, which seems promising.
So i did a test
I took a 56mm diameter ferrite toroid (covered with blue epoxy) of mine, which fall down and separate in 2 almost exact halves. So it was very easy to wind. I think a TV joke will probably work also.
The drawing of Sergdo's thread, shows very clearly the direction of winding and connection. Well done sir.
As i do not speak or read russian, i decided to put 500 turns for each of the secondary, and 20 turns for the primary.
I don't know if this as already be done by the Joulthiefers or julringerer, but i am puzzled by the lighting i got for a 0.6 watt input.
And if we look at the thread of Sergdo, it seems that he can melt some metal with about 20 watts ??
I think it is interesting to share this info, and especially because i did it in 1 hour about, and got imediately a result.
The tuning seems very important, so guys at the bench.
good luck at all and thank's Sergdo for sharing
Laurent
Making a small break with my high voltage testing, because i fried a lot of things and have to think a bit, i stumble upon a thread at OU from Sergdo, which seems promising.
So i did a test
I took a 56mm diameter ferrite toroid (covered with blue epoxy) of mine, which fall down and separate in 2 almost exact halves. So it was very easy to wind. I think a TV joke will probably work also.
The drawing of Sergdo's thread, shows very clearly the direction of winding and connection. Well done sir.
As i do not speak or read russian, i decided to put 500 turns for each of the secondary, and 20 turns for the primary.
I don't know if this as already be done by the Joulthiefers or julringerer, but i am puzzled by the lighting i got for a 0.6 watt input.
And if we look at the thread of Sergdo, it seems that he can melt some metal with about 20 watts ??
I think it is interesting to share this info, and especially because i did it in 1 hour about, and got imediately a result.
The tuning seems very important, so guys at the bench.
good luck at all and thank's Sergdo for sharing
Laurent
