USA As Represented by Secretary of the Navy

Claude D Michel

Thomas A Frank

An acoustic switch, having a predetermined frequency response, is disclosed that allows for a single channel device to be interconnected to multiple transducers. The acoustic switch ensures that the signals from the transducer closest to transmitter, which has a highest possible input level, is supplied to the single channel device for processing.

Dual channel switch with frequency band limiting

In an electrical power conversion system designed to operate on three-phase C voltage generated by a motor generator, a modification is provided to permit the use of a DC power source to operate same. The power conversion system has a plurality of AC-to-DC conversion means for converting the generated three-phase AC voltages. The first specified DC voltage is supplied to a voltage reduction means and the second specified DC voltage is supplied to a control logic circuit of the power source and means, utilizing power from said DC power source, for supplying DC voltages equivalent to the first and second specified DC voltages. The supplying means is isolated from the generated three-phase voltage such that the power conversion system can operate on: 1) three-phase AC voltage generated by the motor generator, 2) DC voltages equivalent to the first and second specified DC voltages from the supplying means, or 3) a combination of the three-phase AC voltage generated by the motor generator and the DC voltages from the supplying means.

Growing community of inventors

Fall River, MA, United States of America

Claude D Michel