The two oscillator circuits below are appropriate for using crystal oscillators in sequence or parallel mode: Superior-repetition-price and significant-power picosecond regenerative amplifier determined by only one bulk Nd:GdVO4 crystal A timing reference incorporating just one-crystal-silicon micromechanical resonator with an outstanding factor of greater than a million and a resonan... https://bookmarknap.com/story9202331/an-unbiased-view-of-bulk-crystal-oscillator