Original poster: "Jolyon Vater Cox by way of Terry Fritz <teslalist@qwest.net>" <jolyon@vatercox.freeserve.co.uk> Could not in theory a saturable inductor be used as a voltage-triggered switch in a TC in place of a spark gap -or would it be just too slow? What would be the effect of the change in reactance of the saturable element on the frequency of the tank circuit?