Original poster: Finn Hammer <f-h@xxxx> Tesla list wrote:
Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>
snip
Richard Hull's record of spark length = 13 x secondary inductor length was achieved driving a 4 inch dia. coil which featured over 1,000 turns of fine stranded closewound enamel magnet wire, I believe it was around #28 or # 30 AWG. A very tiny sec coil closewound delivering 11-12 ft long sparks!! It was amazing to see in operation.Dr. Resonance
How relevant is this example?1, R. Hull was basedriving, not a secondary, but a tertiary coil, with who knows what voltage from a who knows how long a secondary coil. Much has been said to awe the field controll in that setup, but without any record of the voltage across the tertiary coil who can say how big an acheivement it is? R. Hull wrote much about the efficiency of this short resonator, and may have initiated the beleif, that magnifiers are inherently more efficient than classic coils, something that nobody have later been able to confirm.
Cheers, Finn Hammer