Crystal oscillators are loosely divided by the frequency they function at and whether they are basic oscillators—operate with the frequency marked about the can or at even multiples of that (overtone oscillators). Modeling of nonlinear micromechanical resonators and their simulation with the harmonic‐equilibrium system A timing reference incorporating a single-crystal-silicon https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html