The fail safe transformer circuit 1, wherein said secondary winding of said transformer supplies the a.c. voltage signals to a rectifier for producing a d.c. control signal for a transductor which controls {TAIL ~ the supply} of a.c. voltage to a transformer having {HEAD ~ primary, secondary and tertiary windings} 
The fail safe transformer circuit 1 , wherein said secondary winding of said transformer supplies the a.c . voltage signals to a rectifier for producing a d.c . control signal for a transductor which controls { TAIL ~ the supply } of a.c . voltage to a transformer having { HEAD ~ primary , secondary and tertiary windings }
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