US Patent 12119621 Self-induced high voltage trigger

A magnetic induction device is provided for triggering an electric spark discharge in response to a variable voltage. The device includes an inductor; a resistor series having first and second resistors; and a discharge device. These are arranged in a receiver circuit in which the inductor, the resistor series and the spark gap are disposed in parallel. The inductor connects between the first and second resistors to a gate electrode of the discharge device. Magnetic flux induces a current into the electrode responsive to the receiver circuit temporarily overlapping the inductor, thereby inducing the spark.