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 {HEAD ~ the supply} of {TAIL ~ a.c. voltage} to a transformer having primary, secondary and tertiary windings 
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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 { HEAD ~ the supply } of { TAIL ~ a.c . voltage } to a transformer having primary , secondary and tertiary windings
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