ULTRASOUND GENERATOR Russian patent published in 2006 - IPC B06B1/00 

FIELD: engineering of resonance receiver for technological use.

SUBSTANCE: native frequency of receiver is measured directly in form of frequency of free fading oscillations at input of receiver, disconnected from generator for time, necessary for measurement. This disconnection and connection of receiver to frequency meter is performed by, respectively, high-current and low-current keys, operating inversely. Further generation is performed at measured frequency until moment of appearance of discrepancy signal from amplitude comparator, after that frequency measurement is repeated. Additionally prevented is dependency of discrepancy signal from quality of receiver, exceeding of set limits by generation frequency is also prevented, emergency shutdown of generator is made possible, and also partial digital realization of low-current circuit, necessary to achieve increased stability and resistance to interference.

EFFECT: maintained precise resonance state, and, as a result, achieved maximal efficiency of receiver.

5 cl, 1 dwg