High Power Sonar Transmitter Using Parallel Inverter Unit.
Abstract
This report describes the performance of a high power sonar transmitter, which uses semiconductor components, driving 400 cycle per second electromagnetic variable reluctance type transducers. The input voltage to the transmitter is three phase, sixty cps which is first rectified and then converted to a single phase output voltage by a parallel inverter unit using silicon controlled rectifiers. By selecting the values of the series inductance and the parallel capacitor in the inverter unit so that they were resonant at the resonant frequency of the transducer load, the output votlage of the transmitter was nearly sinusoidal at this frequency. At other frequencies the output voltage was sometimes strongly distorted and changed in level due principally to the change in transducer impedance. Transmitter efficiencies of up to 75 percent were measured. The appendix contains response curves, beam patterns and the calculated values of efficiencies of the transducer loads used in the test.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 05, 1962
- Accession Number
- ADA074096
Entities
People
- F. L. Hunsicker
Organizations
- Columbia University