Oscillators – Automatic frequency stabilization using a phase or frequency... – Search sweep of oscillator
Reexamination Certificate
2006-06-29
2008-10-21
Mis, David (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Search sweep of oscillator
C331S17700V, C310S317000
Reexamination Certificate
active
07439815
ABSTRACT:
In a method and a circuit arrangement for operating an ultrasound oscillation system, wherein an excitation voltage is applied to an ultrasound oscillation system comprising an ultrasound oscillator and components for forming an oscillation circuit for generating an excitation current and wherein the frequency of the excitation voltage is adjustable for operating the ultrasound oscillation system at a predetermined operating point, upon switching on the ultrasound oscillation system, the frequency, beginning with a startup frequency, is changed until the operating point is reached, and, upon switching off the ultrasound oscillation system, the frequency of the excitation circuit is recorded in a storage device and the recorded value is used for determining the startup frequency when the ultrasound oscillation system is again switched on.
REFERENCES:
patent: 5013982 (1991-05-01), Sasaki
patent: 44 00 210 (1995-08-01), None
Bach Klaus J.
Martin Walter Ultraschalltechnik AG
Mis David
LandOfFree
Method and apparatus for switching on an ultrasound... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for switching on an ultrasound..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for switching on an ultrasound... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4003534