Topband: Bake to the basics with coils

Herb Schoenbohm herbs at
Tue Apr 26 15:09:42 PDT 2011

Long before we were using RF to communicate very far Tesla had it all 
right there......
Nikola Tesla explains that a standard coil of 1000 turns with a 
potential of 100 volts across it will have a difference of 0.1 volt 
between turns. A similar BIFILAR coil will have a potential of 50 volts 
between turns.
In that the stored energy is a function of the square of the voltages 
the energy in the BIFILAR will be ... 50 squared / .1 squared = 2500 / 
.01 = 250,000 times greater than the standard coil
"Bifilar wound coils are used in the system because a bifilar wound coil 
maximizes the voltage difference between its turns, the current is then 

"United States Patent Number 512,340 - COIL FOR ELECTROMAGNETS - Nikola 
Tesla, Inventor


Herb, KV4FZ

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