Power supply system for low-frequency and high-frequency discharge devices and switching means therefor

Claim 1

AN ELECTRICAL CIRCUIT COMPRISING: (A) A SORUCE OF ELECTRIC CURRENT OF LOW FREQUENCY, (B) A PLURALITY OF LIGHT SOURCE DEVICES OPERABLE ON SAID CURRENT OF LOW FREQUENCY, AND SAID DEVICES OPERABLE WITH IMPROVED PERFORMANCE ON CURRENT OF HIGH-FREQUENCY; (C) NORMALLY DEACTIVATED FREQUENCY-CONVERTING MEANS OPERABLE TO GENERATE SAID CURRENT OF HIGH-FREQUENCY WHEN ACTUATED; (D) MEANS FOR INITIATING OPERATION OF ANY OF SAID DEVICES ON SAID CURRENT OF LOW FREQUENCY; (E) CURRENT SENSING MEANS RESPONSIVE TO CURRENT THROUGH SAID INITIALLY OPERATED DEVICES TO GENERATE AN ELECTRIC OUTPUT SIGNAL WHICH IS SUBSTANTIALLY CONSTANT REGARDLESS OF THE NUMBER OF SAID DEVICES INITIALLY OPERATED; (F) PRIMARY SWITCHING MEANS AND SECONDARY SWITCHING MEANS AND THE OPERATING MEANS FOR SAID SWITCHING MEANS; (G) SAID PRIMARY SWITCHING MEANS, WHEN IN A CLOSED POSITION, ACTUATING SAID FREQUENCY-CONVERTING MEANS TO CAUSE THE RESULTING GENERATED HIGH-FREQUENCY CURRENT TO OPERATE SAID INITIALLY OPERATED DEVICES; (H) SAID SECONDARY SWITCHING MEANS, OPERABLE WHEN OPEN, TO TERMINATE ELECTRIC CURRENT OF SAID LOW FREQUENCY THROUGH SAID INITIALLY OPERATED DEVICES; AND (I) SAID OPERATING MEANS FOR SAID SWITCHING MEANS RESPONSIVE TO THE OUTPUT SIGNAL OF SAID SENSING MEANS TO CLOSE SAID PRIMARY SWITCHING MEANS, AND AT SUBSTANTIALLY THE SAME TIME, OPEN SAID SECONDARY SWITCHING MEANS.