Isolation Amplifier Energized by Ultrasound
- 1 July 1974
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. BME-21 (4) , 329-333
- https://doi.org/10.1109/tbme.1974.324321
Abstract
A power supply energized by ultrasound has been developed and investigated. The supply can be used in medical applications where a high isolation from earth is essential, for example in the protection of a patient from the hazards of electric shock caused by medical instrumentation. The ultrasound energy is generated by a transmitting piezoelectric crystal (transducer) and sent to a receiving transducer via a glass rod 20 mm long. At the receiving transducer the acoustic energy is converted back to electric energy. The power transmission has been measured at different resonances of the glass rod-transducer combination. The radial mode resonance of the transducer seems to give the largest power transfer and the highest efficiency.Keywords
This publication has 2 references indexed in Scilit:
- Highly isolated power supply energised by ultrasoundMedical & Biological Engineering & Computing, 1973
- Electricity in hospitals: elimination of lethal hazardsIEEE Spectrum, 1971