| 摘要 |
An ultrasonic oscillator, which can be mounted on a vehicle and which enables an oscillating element itself to generate a high ultrasonic energy, comprising a storage battery having one power line thereof grounded, a DC - DC converter which is electrically isolated from said power lines of the storage battery and which supplies D.C. power to non-grounded power lines thereof, and a Darlington transistor circuit having a ultrasonic oscillating element connected across base and collector thereof.
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