Magnetic current zero sensing circuit

Claim 1

A SIGNAL GENERATING SYSTEM FOR GENERATING A SIGNAL PRIOR TO THE PASSAGE OF ZERO CURRENT IN A CONDUCTOR; SAID SIGNAL CURRENT SYSTEM COMPRISING MAGNETIC CORE MEANS ENCIRCLING SAID CONDUCTOR, A RELATIVELY SMALL AIR GAP EXTENDING ACROSS SAID MAGNETIC CORE MEANS, A RELATIVELY LARGE AIR GAP EXTENDING ACROSS SAID MAGNETIC CORE MEANS, A MAGNETIC CIRCUIT CONNECTED IN PARALLEL WITH SAID RELATIVELY SMALL AIR GAP, AUXILIARY WINDING MEANS WOUND ON SAID MAGNETIC CIRCUIT AND TOROIDAL WINDING MEANS WOUND ON SAID MAGNETIC CORE MEANS, A RESISTOR, AND SIGNAL OUTPUT MEANS CONNECTED TO SAID MAGNETIC CIRCUIT FOR GENERATING AN OUTPUT SIGNAL RESPONSIVE TO A CHANGE IN FLUX IN SAID MAGNETIC CIRCUIT; SAID AUXILIARY WINDING MEANS, SAID TOROIDAL WINDING AND SAID RESISTOR CONNECTED IN SERIES; THE MAGNETOMOTIVE FORCES ACROSS SAID RELATIVELY SMALL AIR GAP DUE TO THE FLUX IN SAID MAGNETIC CORE BEING IN PHASE WITH THE CURRENT THROUGH SAID CONDUCTOR; THE MAGNETOMOTIVE FORCE INDUCED IN SAID MAGNETIC CIRCUIT BY SAID AUXILIARY WINDING MEANS BEING IN QUADRATURE WITH THE CURRENT THROUGH SAID CONDUCTOR WHEREBY THE NET MAGNETOMOTIVE FORCE AROUND SAID MAGNETIC CIRCUIT PASSES THROUGH ZERO PRIOR TO THE PASSAGE OF CURRENT IN SAID CONDUCTOR THROUGH ZERO WHEREBY THE FLUX OF SAID MAGNETIC CIRCUIT REVERSES PRIOR TO PASSAGE OF ZERO CURRENT THROUGH SAID CONDUCTOR.