Magnetostrictive Versus Piezoelectric Transducers For Power ... | 合法醫療器材資訊網

Typicalultrasonicfrequenciesrangefrom20to200kHz.Duetophysicalsizelimitationsofthemagnetostrictivetransducer(frequencyisdependentonthe ...

There are two fundamental transducer designs used for power ultrasonic applications today, magnetostrictive and piezoelectric. Piezoelectric transducers utilize the piezoelectric property of a material to convert electrical energy directly into mechanical energy. Magnetostrictive transducers utilize the magnetostrictive property of a material to convert the energy in a magnetic field into mechanical energy. The magnetic field is provided by a coil of wire which is wrapped around the magnetostrictive material. Both types of transducers have advantages and disadvantages. Blackstone~NEY Ultrasonics has weighed both technologies and chooses to provide piezoelectric transducers. The following will help the reader understand the rationale behind this choice.

The very first ultrasonic devices were developed early in the 20th century when the piezoelectric effect was discovered by Jacques a...