Accession Number : AD0638317

Title :   PEM QUARTZ CRYSTAL UNITS, FILTER LOW FREQUENCY 1 MC TO 10 MC TYPES CR-(XM-49)/U THRU CR-(XM-52)/U PER SCS-191 DATED 23 JANUARY 1963.

Descriptive Note : Quarterly progress rept. no. 7, Jan-Mar 66.

Corporate Author : PIEZO CRYSTAL CO CARLISLE PA

Personal Author(s) : Matistic,A. S.

Report Date : 15 JUL 1966

Pagination or Media Count : 16

Abstract : Crystal designs and processes are described for filter crystal units - frequencies 1.75 MC, 5 MC, 6 MC and 10 MC - which were fabricated for end use as Preproduction Samples. Three designs were selected to cover the comparatively broad frequency range: planoconvex at 1.75 MC, mass loaded flat round blanks at 6 MC and 10 MC, and mass loaded ''race-track'' shaped blanks at 5 MC. All major tests were performed. Performance was satisfactory at frequencies 5 MC, 6 MC and 10 MC. The preproduction samples were not submitted because of a capacitance ratio problem at the 1.75 MC frequency (planoconvex design). (Author)

Descriptors :   (*CRYSTAL FILTERS, MANUFACTURING), (*QUARTZ, CRYSTAL FILTERS), LOW FREQUENCY, CRYSTAL HOLDERS

Subject Categories : Electrical and Electronic Equipment
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE