Circuit for alternate transmission and reception with only one sound source transducer
US4353004A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1981 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Jan 14, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/903
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit is provided for supplying a transmission oscillator voltage suitable for a piezoelectric sound source transducer in which the transducer also serves as a receiving transducer. The circuit contains an electrical series resonant circuit having a capacitor C and an inductor L with EQU L.multidot.C=(1/2 .pi. f.sub.0).sup.2, wherein the electrical series resonant circuit is matched to the series resonant frequency f.sub.0 of the transducer and is connected parallel to the transducer. The circuit further contains a pair of diodes, connected anti-parallel to one another, and connected in parallel to either the inductor L or to the capacitor C, with the output of the receiver being connected to the capacitor C or to the inductor L.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.