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295 views
00:47 Apr-24-2001
Christophe Greffe
ultrasonic power transmission


Does anyone know if it is possible to tranmit power with ultrasons
(about 20W) and to convert it for example in electrical energy ?
Would the losses be important ?

Regards,

Christophe Greffe


 
02:51 Apr-24-2001
Klaus Brebøl
Re: ultrasonic power transmission Yes it is possible to transfer power by ultrasound without too high losses.
Piezoelectric transformers, where power is transmitted by a ultrasonic field instead of an magnetic field has been known for a long time. One of the first attempts were made in the 60'ies by L.D. Rosen.
Transformers based on his design is used as high voltage supply (1 kV, 5 mA) for the backlight in notebook computers.
More resent designs have been used for supplying low voltage, high currents (12 V, 1 A) as well.
Efficiency is between 95-99,? %

Best regards

Klaus Brebøl


: Does anyone know if it is possible to tranmit power with ultrasons
: (about 20W) and to convert it for example in electrical energy ?
: Would the losses be important ?
.
: Regards,
.
: Christophe Greffe
.



 


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