The two oscillator circuits down below are ideal for applying crystal oscillators in sequence or parallel mode: High-repetition-charge and high-electrical power picosecond regenerative amplifier dependant on just one bulk Nd:GdVO4 crystal A timing reference incorporating one-crystal-silicon micromechanical resonator with a high quality issue of larger sized than one million as https://macrobookmarks.com/story19092744/the-basic-principles-of-bulk-crystal-oscillator