The 2 oscillator circuits beneath are well suited for applying crystal oscillators in sequence or parallel mode: High-repetition-amount and higher-power picosecond regenerative amplifier dependant on only one bulk Nd:GdVO4 crystal A timing reference incorporating only one-crystal-silicon micromechanical resonator with a top quality component of greater than a million and a https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html