Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
Hi Ed,
I believe a common SG is an underlining assumption. The two
primarys are wired in series. I do have a movie of a twin coil (its
called Nick's twin) that showes the two secondaries going into and outof phase.
Gerry R.
Original poster: Ed Phillips <evp@xxxxxxxxxxx>
Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
Hi Steve,
I do believe that the primary keeps them in "proper" phase when
sufficient energy is still in the primary. My question was
addressing what happens once the primary quenches (should be at
maximum energy in the secondary). I'm thinking that phase drifting
begins at this moment in time if not before. I guess I'm assuming
these two coils are side by side and not a bipolar coil. Even with
a bipolar coil, if the center turn is grounded, I dont know if the
magnetic coupling will keep them properly phased. Maybe Antonio
can shed some lite on this.
Gerry R."
Tesla mentions that when two coils are tuned to different
frequencies the nature of the spark between them can vary over
wide limits; he doesn't mention whether they had a common primary
circuit but I would think the same spark gap would be necessary so
the discharges occurred at the same time. I've posted the quote
here but don't have it handy at the moment. It would be make an
interesting experiment to play with this.
Ed