The 2 oscillator circuits below are suited to using crystal oscillators in sequence or parallel manner: Higher-repetition-level and large-ability picosecond regenerative amplifier depending on one bulk Nd:GdVO4 crystal A timing reference incorporating only one-crystal-silicon micromechanical resonator with a high quality aspect of larger than one million in addition to a https://sparxsocial.com/story9267971/considerations-to-know-about-bulk-crystal-oscillator