Accession Number : AD0481558

Title :   INVERSE RESISTANCE-POWER EFFECT IN QUARTZ CRYSTAL UNITS.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH NJ

Personal Author(s) : Bernstein, Marvin

Report Date : MAR 1966

Pagination or Media Count : 7

Abstract : Past experience with quartz crystal units, operating on overtone modes, has shown instances where the equivalent resistance increases excessively at low drive levels. This problem arose with CR-55/U and CR-56/U crystal units used in Radio Set AN/ARC-54. An investigation of the cause of this resistance increase was undertaken and experiments tend to show that the difficulty is due to a lack of cleanliness of the resonator. Small quartz and foreign particles attached to active portions of the resonator by means of a sticky film appear to be the greatest cause of the resistance increase. (Author)

Descriptors :   *ELECTRICAL RESISTANCE), (*QUARTZ RESONATORS, MEASUREMENT, ELECTRICAL IMPEDANCE, QUARTZ, CONTAMINATION, FAILURE(MECHANICS), FRACTURE(MECHANICS), SPECTROSCOPY, FILMS, ETCHING, COMMUNICATION AND RADIO SYSTEMS, PARTICLES.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE