Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1983-05-26
1985-02-12
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
H01L 4108
Patent
active
044993951
ABSTRACT:
The present invention concerns itself with crystallographically doubly rotated quartz orientations vibrating in the transverse c-mode with turnover temperatures which are considerably less sensitive to angular misorientation than the comparable well known AT- or BT-cuts. These crystals are arbitrarily designated as AK-cut crystals and are defined by .phi.-angle variations between 30.degree.-60.degree. and .theta.-angle variations between 12.degree.-32.degree.. The turnover temperatures of these resonators are between 60.degree. C. and 200.degree. C.
REFERENCES:
patent: 3826931 (1974-07-01), Hammond
patent: 4079280 (1978-03-01), Kusters et al.
patent: 4124809 (1978-11-01), Engdahl et al.
patent: 4126802 (1978-11-01), Hermann
patent: 4306170 (1981-12-01), Motte et al.
patent: 4313071 (1982-01-01), Hermann et al.
Kahan, A., Turnover Temperatures for Doubly Rotated Quartz, Proceedings of the 36th Annual Symposium on Frequency Control, Jun. 2-4, 1982, pp. 170-180, (1982).
Kahan, A. and Euler, F., AK-Cut Crystal Resonators, Proceedings of the 14th Precise Time and Time Interval Meeting, Dec. 2, 1982, pp. 577-591, (1982).
Handbook of Piezoelectric Crystals for Radio Equipment Designers, by Buchanan, WADC Technical Report 54-248, Dec. 1954, pp. 33-34.
Budd Mark O.
O'Brien William J.
Singer Donald J.
The United States of America as represented by the Secretary of
LandOfFree
Cut angles for quartz crystal resonators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cut angles for quartz crystal resonators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cut angles for quartz crystal resonators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1391696