MICROWAVE DEVICE Russian patent published in 1994 - IPC

FIELD: radio engineering. SUBSTANCE: microwave device has microwave instrument 1 with cathode, electrodynamic system 4, power supply 8 whose positive pole is grounded, and in addition it is provided with impulse current transformer 9, Rogovskii belt 7, there differential amplifiers 10, 12, 18, d.c. component recovery unit 11, integrator 16 with capacitor 17, switch 15, one-shot multivibrator 13, and control unit 14 with relevant electric connections. Newly introduced components and connections make it possible to discriminate signal proportional to cathode current which is amplified, its d.c. component is recovered, and then this signal arrives at one of differential amplifier inputs whose other input is supplied with signal proportional to collector current measured by means of Rogovskii belt followed by its amplification and integration by external integrating device. EFFECT: provision for serviceability check of device by discriminating and measuring electrodynamic system current. 2 dwg