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Ability of d oscil ckt is to oscilt at one exact freq cald as frqncy stability...no. Of factors may cause chngs n osciltor frqncy...primary fctrs are 1)temperature chngs 2)chngs n dc power supply..chngs in these two factors causes variations in d gain of d opamp,in junction capacitances and resistances
of d transistors in an opam nd n extrnl components..so to avois thses variations v use regulated power supply n temprtr controler...
Anothr imp factor dat detrmines frqncy stability s d figure of merit Q of d ckt...the higher d Q the grtr d stability ..for this reason crystal osciltrs are far more stabl dan d RC or LC osciltrs especially at highr frequencies...RC ckts are used for audio frqncies...
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