The 2 oscillator circuits down below are ideal for employing crystal oscillators in sequence or parallel method: Significant-repetition-level and superior-power picosecond regenerative amplifier based on a single bulk Nd:GdVO4 crystal A timing reference incorporating an individual-crystal-silicon micromechanical resonator with a high quality factor of larger than a million and also https://rankuppages.com/story4030534/the-2-minute-rule-for-bulk-crystal-oscillator