| 摘要 |
A generator for producing energy in the ultrasonic range for driving a transducer having variable load characteristics in which the generator includes an oscillator circuit having the capability of accepting and operating with transducers whose natural resonant frequencies vary over a wide range; which has good frequency stability under low or no-load conditions of operation; and good frequency stability under loaded conditions of the transducer. The generator circuit also includes a self-monitoring circuit for keeping a relatively constant output power over wide ranges of loading of the transducer.
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