The two oscillator circuits underneath are ideal for applying crystal oscillators in series or parallel manner: Higher-repetition-amount 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 an excellent aspect of more substantial than a million along w... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html