The 2 oscillator circuits underneath are suitable for making use of crystal oscillators in sequence or parallel manner: Superior-repetition-amount and significant-electrical power picosecond regenerative amplifier depending on one bulk Nd:GdVO4 crystal A timing reference incorporating a single-crystal-silicon micromechanical resonator with a top quality element of greater than one mil... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html