magnetostrictive transducer การใช้

• Magnetostrictive transducers were pursued after WW2 as an alternative to piezoelectric ones.
• Elements on the electrical side, such as the inductance of the magnetostrictive transducer, are omitted but would be taken into account in a complete design.
• The Simple type used 14.5 kHz magnetostrictive transducers at 0.25 kW, driven by capacitive discharge instead of oscillators, with range up to 2.5 km.
• A number of upgrade packages have been offered for the torpedo, a 1986 Honeywell kit replaced the magnetostrictive transducers with ceramic transducers in a planar array, and the replacement of the analogue guidance electronics with a digital system.
• Later during the WW2, Japanese used the alloy with 12.7-12.9 % aluminium as a replacement of nickel for the magnetostrictive transducers used in their Type 93 model 5, Type 3, and Simple naval sonars.
• The guidance of a Mk37 mod 0 torpedo was done by a gyroscope control during the initial part of its trajectory, where the gyro control achieved a straight run, a passive sonar homing system, and at the last by a magnetostrictive transducers operating at 60 kHz.
• The later Type 3, with German-design magnetostrictive transducers, operated at 13, 14.5, 16, or 20 kHz ( by model ), using twin transducers ( except model 1 which had three single ones ), at 0.2 to 2.5 kilowatts.