Method of and apparatus for driving an ultrasonic transducer including a phase locked loop and a sweep circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 23, 1981
Grant Date -
N/A
app pub date -
Aug 9, 1979
filing date -
Jul 6, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and a circuit for stably driving an ultrasonic transducer by sweeping, as a first step of starting the oscillation, the oscillating frequency over a range wider than a PLL followable range, finding a resonant point to lock the oscillating frequency thereto, and effecting, as a second step, the PLL following operation starting from the above resonant point.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully