High voltage power supply

Claim 1

IN AN X-RAY SYSTEM, THE COMBINATION COMPRISING AN X-RAY TUBE, A HIGH VOLTAGE TRANSFORMER HAVING A SECONDARY WINDING COUPLED TO SAID X-RAY TUBE AND A PRIMARY WINDING ADAPTED OF INDUCE HIGH VOLTAGE IN SAID SECONDARY WINDING, A PAIR OF OPPOSITELY POLED RECTIFIERS, EACH HAVING GATE MEANS TO ENABLE IT TO CONDUCT CURRENT SELECTIVELY IN RESPONSE TO A CONTROL SIGNAL, SAID RECTIFIERS BEING DISPOSED IN PARALLEL BETWEEN A SOURCE OF ALTERNATING CURRENT AND THE PRIMARY WINDING OF SAID HIGH VOLTAGE TRANSFORMER, MEANS TO PRODUCE SYNCHRONIZING SIGNALS REPRESENTATIVE OF THE ALTERNATIONS OF THE CURRENT FROM SAID SOURCE, MEANS TO PRODUCE TIMING SIGNALS DEFINING THE BEGINING AND THE END OF A TIME PERIOD OF PRE-DETERMINED DURATION CORRESPONDING TO A DESIRED X-RAY EXPOSURE TIME, A SATURABLE TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS TO PRODUCE CURRENT ALTERNATIONS IN THE PRIMARY WINDING OF SAID SATURABLE TRANSFORMER IN SYNCHRONISM WITH SAID SYNCHRONIZING SIGNALS FOR A PERIOD DEFINED BY SAID TIMING SIGNALS, AND MEANS TO DERIVE FROM SAID SATURABLE TRANSFORMER SECONDARY, CONTROL SIGNALS FOR ALTERNATELY ENABLING SAID RECTIFIERS TO CONDUCT CURRENT FROM SAID SOURCE TO SAID HIGH VOLTAGE TRANSFORMER PRIMARY.