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Title: Driver for an ultrasonic transducer and an ultrasonic transducer
Authors: Or, Derek Siu-wing
Yung, Chung-sheung
Chan, Helen L. W.
Subjects: Ultrasonic transducer
Ultrasonic driver
Issue Date: 9-Dec-2008
Source: US Patent 7,462,960 B2. Washington, DC: US Patent and Trademark Office, 2008.
Abstract: An ultrasonic transducer driver has a giant magnetostrictive element, a fastener for holding the giant magnetostrictive element under mechanical pressure, a first field generator for providing a magnetic bias field, a second field generator for providing a magnetic drive field and a magnetic circuit for channelling the magnetic fields in the magnetostrictive element. An ultrasonic transducer for a bonding apparatus has a horn having a bonding tool at its smaller end and a mounting barrel adjoined onto it. The driver coupled to the larger end of the horn.
Rights: Assignee: The Hong Kong Polytechnic University.
Type: Patent
Appears in Collections:Patents of PolyU
AP Patents

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