Saturable reactor and transistor bridge voltage control apparatus

Claim 1

APPARATUS OF THE CLASS DESCRIBED COMPRISING: FIRST, SECOND, THIRD AND FOURTH SWITCH MEANS EACH HAVING AN ENERGIZING ELECTRODE; A BRIDGE CIRCUIT HAVING A FIRST BRANCH INCLUDING SAID FIRST AND THIRD SWITCH MEANS CONNECTED IN SERIES, AND A SECOND BRANCH INCLUDING SAID SECOND AND FOURTH SWITCH MEANS CONNECTED IN SERIES; A SOURCE OF ENERGIZING POTENTIAL CONNECTED ACROSS ONE DIAGONAL OF SAID BRIDGE CIRCUIT; LOAD MEANS CONNECTED ACROSS THE OTHER DIAGONAL OF SAID BRIDGE CIRCUIT; FIRST AND SECOND CURRENT CONTROL MEANS EACH HAVING A CONDUCTING AND NON-CONDUCTING STATE; FIRST AND SECOND CURRENT PATHS, SAID FIRST CURRENT PATH INCLUDING SAID FIRST CURRENT CONTROL MEANS AND THE ENERGIZING ELECTRODES OF SAID FIRST AND FOURTH SWITCH MEANS AND SAID SECOND CURRENT PATH INCLUDING SAID SECOND CURRENT CONTROL MEANS AND THE ENERGIZING ELECTRODES OF SAID SECOND AND THIRD SWITCH MEANS; AND MEANS CONNECTED TO SAID FIRST AND SECOND CURRENT CONTROL MEANS TO VARY THE CONDUCTION TIME OF SAID CONTROL MEANS.