the ET ignition is not dwelled . ( nor is a magneto )
the charge is held in the stator by the shunted/closed points .
the stators magnetic charge is only released as the points open ,
this flashes the primary winding of the coil ... which kicks the secondary and spark .
it all must happen ... timed to be near the peak of a AC wave .
the peak voltage is used as it is made .
the dc ignition is dwelled/charged like an electromagnet ... wth the points closed
( and hooked to a dc power source )
when the points open , input power is lost , the coils primary field collapses ,
... kicking the coil-secondary and the spark
the AC points cam does not dwell with AC application .
Last edited by quinten; 10/30/20 4:37 pm.