两种型式水中用的压电水晶机电转换器

我们设计了并制造了两种不同型式的水中用水晶机电转换器:(i)镶嵌型,(ii)叠片型;尤其注意于水晶片的胶合、振动体的支持等问题,其目的在于减少转换器在无负荷时的等值电阻r。测得一个面积为609平方毫米其支持点完全自由的镶嵌型转换器的r为60kΩ;又测得另一个面积为256平方毫米四块水晶叠片型转换器的r焉15kΩ。再后讨论了两种型式转换器的优缺点,显见得叠片型的优于镶嵌型的很多,并进一步考虑了可能改进之点。

TWO TYPES OF UNDER-WATER QUARTZ TRANSDUCERS

Two types of under-water quartz transducers, namely, the mosaic type & the array type, were designed and manufactured, particularly paying attention to the points of cementing of crystals and supporting of vibrating bodies, with a view to reducing the equivalent resistance r of the transducers when they are unloaded. A transducer of the mosaic type with an area of 609 mm², unsupported, measured 60 k Ω for its r, while one of the array type with an area of 259 mm², 15 k Ω. Finally, discussions were made on the comparison of these two types of transducers with the conclusion that a transducer of the array type possesses more merits than that of the mosaic type. The ways for further improvements were considered.