The Turn Of The Century
(C) Jeff Behary 2007
220/240V Model T Ignition Coil / 1/2" Spark Induction Coil:
A slight "Tesla-ization" of the circuit produces some scary 2" flames!
Click here for a 30 second movie!
The electromagnet used for these photos ranged from a small Violet Ray coil to a small reactance coil. Power consumption was around 1 - 1.5A
from the 220 mains. The condenser was a .5 mfd. The spark gap was from 3/8" tungsten contacts carefully spaced from .0005" - .0015" apart.
The de-tarred Model T Coil was placed in a bowl of Soybean Oil. (Okay, so I ran out of Mineral Oil!)
I quit using Boiled Linseed Oil because today after work my little shop was a whopping 116 degrees at 5:00 pm. South Florida, go figure!
Not a discharge you want to touch!
The arc starts to bow and flaming sparks can be seen interposed.
A slight draft will cause the arc to distort into sparks...
Blowing on the arc creates a beautiful ribbon discharge.
Still photos are below of this phenomenon.
Same coil with only .05 mfd (ten times less).
A standard Ford Model T Coil removed from the tar...
An accidental flash photo showing the arc in the middle of the flame.