Kickback suppression in twin coils

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Richter, Rick by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rick.richter-at-hp-dot-com>



         Hi,

         I'm new to the list and I've got a question about running twin 
coils. I'm thinking primarily of driving ignition coils or flybacks, but 
I'm wondering if the question also applies to twin tesla coils. I've 
searched most of the archives and couldn't seem to find a definitive 
answer, so I thought I'd ask the group.

         Here it is. I want to know if running two coils in an 
anti-parallel confuguration reduces the "kickback" effect that seems 
harmful to the coil's driving electronics (whether it's the neon 
transformer, the cap bank or a MOSFET). It would seem to me that the surges 
induced in each coil and fed back through each coil's primary winding would 
tend to cancel each other out since the kickback waveform from one coil's 
primary would be inverted with respect to the other coil's primary. Am I 
completely missing the point here, or would minor differences in each 
coil's construction be enough to cancel out this effect? I'm sure someone 
has analyzed this and reported the results, I just haven't been able to 
find the information though. Any help would be appreciated.

         Thanks in advance,

         Rick