filter crystal

filter crystal

[′fil·tər ‚krist·əl]
(electronics)
Quartz crystal which is used in an electrical circuit designed to pass energy of certain frequencies.
References in periodicals archive ?
The water is coming out of my filter crystal clear, so why is my pond still green?
Specific areas of interest include evaluation of material constants of quartz and other piezoelectric substances, development of equivalent networks for bulk and SAW resonators, filter crystal and crystal filter design, measurement of circuit parameters of signal processing devices and precision resonators, development of crystal parameter measurement equipment, and growth of high purity quartz.