Patent ID: 6177764
Filing Date: 2001-01-23
Classification: G01S,G05F,H01J

Abstract:
A control system for regulating output of a magnetron, said control system comprising:means for detecting a drive parameter associated with the output level of said magnetron;a control circuit coupled to said means for detecting and configured to produce a control signal in response to said drive parameter; said control circuit including a comparator circuit for comparing an input representative of said drive parameter to a threshold level and a means for adjusting the level of said control signal in a first sense when said input is greater than said threshold level and for adjusting the level of said control signal in a second sense when said input is less that said threshold level; said means for adjusting including a digital up-down counter and said control signal comprising a digital signal; andan adjustment circuit coupled to said control circuit, said adjustment circuit being configured to cause variation in said drive parameter in response to said control signal.