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Accession Number:
AD0612103
Title:
PEM QUARTZ CRYSTAL UNITS, FILTER LOW FREQUENCY, 1 MC TO 10 MC TYPES CR-(XM-49)/U THRU CR-(XM-52)/U.
Corporate Author:
PIEZO CRYSTAL CO CARLISLE PA
Report Date:
1965-02-15
Abstract:
Planoconvex plates, with diameter over thickness DT ratios below 20, exhibit freedom from unwanted responses in the frequency region of nominal frequency 5. For planoconvex plates, excessively large gamma sub o values can be avoided by judicious selection of the plating spot diameter At any specific frequency, the optimum spot for every contour radius which produces the minimum gamma sub o value - has to be determined by experimentation. At DT ratios below 20, conventional crystal mounts introduce severe damping at frequencies 6 mc and above as a result, series resistance values will exceed specified maximums if adequate mounting methods are not employed. The mounting problem has not been fully solved more work remains. Author
Descriptive Note:
Quarterly progress rept. no. 2, Oct-Dec 64,
Supplementary Note:
See also AD-609 463.
Pages:
0020
Contract Number:
DA36 039AMC03635E
File Size:
0.00MB
