Saturable core multivibrator with auxiliary flux generating frequency controls

Claim 1

A FREE RUNNING MAGNETIC MULTIVIBRATOR COMPRISING A SUBSTANTIALLY TOROIDAL CORE OF MAGNETIC MATERIAL HAVING A CENTRAL OPENING AND A PAIR OF SUBSTANTIALLY EQUALLY SIZED AUXILIARY OPENINGS FORMED THERETHROUGH, THE MAGNETIC MATERIAL OF SAID CORE SURROUNDING SAID AUXILIARY OPENINGS FORMING A PLURALITY OF LEGS WITH SIDE DETERMINED BY INNER AND OUTER PERIPHERY OF SAID CORE AND SAID AUXILIARY OPENINGS, SAID SIDE LEGS BEING SUBSTANTIALLY EQUAL IN WIDTH, AND A COMMON LEG DETERMINED BY THE MOST CLOSELY SPACED EDGES OF SAID AUXILIARY OPENINGS, THE WIDTH OF COMMON LEG BEING AT LEAST TWICE THE WIDTH OF ONE OF SAID LEGS, A FIRST WINDING, A SECOND WINDING, AND AN OUTPUT WINDING, SAID WINDINGS BEING WOUND AROUND SAID COMMON LEG, A PAIR OF JUNCTION TYPE TRANSISTORS, EACH TRANSISTOR HAVING THREE ELECTRODES, ONE ELECTRODE OF EACH TRANSISTOR BEING CONNECTED IN COMMON, A SECOND ELECTRODE OF EACH TRANSISTOR BEING CONNECTED IN SERIES WITH SAID FIRST AND SECOND WINDINGS RESPECTIVELY, THE REMAINING ELECTRODE OF EACH TRANSISTOR BEING CROSS CONNECTED TO SAID FIRST AND SECOND WINDINGS RESPECTIVELY, A CONTROL WINDING WOUND ON SAID TOROIDAL CORE, AND MEANS FOR VARIABLY ENERGIZING SAID CONTROL WINDING.