BFO metal detector from Electric Fly swatter
I modified an electric fly swatter to BFO metal detector. Schematic from http://www.easytreasure.co.uk/bfo.htm
Search coil = 19cm diameter 15 turns.
Reference coil (Glue Stick + Copper pipe) = 2cm diameter 125 turns.
Видео BFO metal detector from Electric Fly swatter канала Thomas Kim
Search coil = 19cm diameter 15 turns.
Reference coil (Glue Stick + Copper pipe) = 2cm diameter 125 turns.
Видео BFO metal detector from Electric Fly swatter канала Thomas Kim
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