The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1985
Filed:
Aug. 27, 1982
Masahiro Nakamura, Tokyo, JP;
Ohtake Works Company, Ltd., Tokyo, JP;
Abstract
A method for oscillating ultrasonic waves and a microcomputer's built-in ultrasonic wave oscillator circuitry being capable of tracking and regulating ultrasonic wave vibrations automatically to be oscillated stably at a resonant frequency of a vibrator. An amplified excitation signal, having a necessary oscillating frequency regulated and amplified in accordance with an input adjusting voltage value signal, is output from an operating unit section. A high-frequency wave current value signal, flowing through a vibrator, after the amplified excitation signal is introduced, is issued from a vibration system to a conversion-transmission section. The adjusting voltage value signal and the high-frequency wave current value signal are converted and then transmitted to the operating unit section, and a microcomputer, respectively. The microcomputer monitors changes in the resonant frequency of the vibrator by always detecting a peak high-frequency wave current value signal flowing through the vibrator with a calculating process which that consecutively compares the memorized high-frequency wave current value signal with a new high-frequency wave current value signal coming from the conversion-transmission section. The output is the voltage value signal adjusted by tracking the peak high-frequency wave current value signal, from the microcomputer.