MICROWAVE APPARATUS INCORPORATING TWO OR MORE MAGNETRONS EACH PROVIDED WITH MEANS FOR CONTROLLING THE MICROWAVE POWER THEREOF

摘要

pA method for controlling magnetrons with regard to their microwave power in those cases where a multiple of magnetrons are present. The invention is characterized by connecting two or more magnetrons (1, 2) in parallel with a power unit (3) operative in generating a high voltage for operating the magnetrons. A separate control circuit (9) individual for each magnetron is connected to respective magnetrons (1, 2) and includes a measuring means (10) by means of which the anode current passing through respective magnetrons is measured on the high-voltage side of the magnetrons. The measuring means (10) is galvanically separated from a control circuit (19; 20), which is arranged to control the anode current of a respective magnetron in response to a signal received from the measuring means (10). The invention also relates to an arrangement for carrying out the method./p [EP0252889A2]