An Electrical Load for Simulating a Transducer in an Array.
Abstract
Individual transducer elements of large sonar arrays are subject to electrical impedance changes as a result of acoustical interactions between neighboring driven elements. In order to transmit acoustic power, the elements are driven individually or in groups by power amplifiers. When a prototype amplifier is constructed, an entire array of transducers and amplifiers may not be available for testing the amplifier. A passive electrical dummy load was constructed to have impedance characteristics equivalent to the particular type of transducer which a prototype current-source switching amplifier was to drive. An active port was added to the electrical dummy load to change the amplifier's load impedance at all frequencies of interest, thereby simulating different positions in a transducer array in which more than one element is driven. The dummy load design technique is described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 17, 1972
- Accession Number
- AD0755174
Entities
People
- James J. Truchard
- William C. Nowlin
Organizations
- University of Texas at Austin