DRIVE NETWORK FOR AN ULTRASONIC PROBE

A drive network for an ultrasonic probe includes a network operative to apply a pulse to a feedback terminal of a phase comparator (56) substantially simultaneously with the application to the probe of an excitation signal from a source at a predetermined frequency. This insures that at the start-up...

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Bibliographische Detailangaben
Hauptverfasser:	KOHLI, CHHAYA KULKARNI, CHOPERENA, ALFREDO MIGUEL
Format:	Patent
Sprache:	eng
Schlagworte:	DIAGNOSIS FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL HUMAN NECESSITIES HYGIENE IDENTIFICATION INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PERFORMING OPERATIONS PHYSICS SURGERY TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A drive network for an ultrasonic probe includes a network operative to apply a pulse to a feedback terminal of a phase comparator (56) substantially simultaneously with the application to the probe of an excitation signal from a source at a predetermined frequency. This insures that at the start-up of the drive network the frequency of the feedback signal to the phase comparator leads the excitation signal also being applied thereto, to cause the excitation signal from the source to increase toward the resonant frequency of the probe, thereby to search for the resonant frequency of the probe.