Cov kws kho tsheb feem ntau tsuas paub tias cov siv lead ua yog cov khoom siv ntau zaus, thiab tej zaum yuav muaj ob peb tus neeg uas txaus siab rau siv lead ua yog muab faib ua cov siv lead ua zaus thiab cov siv lead ua overtone. Yog li dab tsi yog qhov siv lead ua zaus, dab tsi yog qhov siv lead ua overtone, thiab qhov sib txawv ntawm kev siv ob hauv Circuit Court yog dab tsi.
Kev vibration ntawm cov siv lead ua zoo li lub caij nplooj ntoos hlav; Lub vibration zaus ntawm cov siv lead ua muaj feem xyuam rau cheeb tsam, thickness thiab txiav orientation ntawm quartz siv lead ua.
Qhov ntev nws yog, qhov qeeb qeeb nws co.
lub thicker nws yog, qhov qeeb qeeb nws co.
Lub softer lub crystal, qhov qeeb nws yuav vibrate.
Tab sis luv luv, nyias dhau, nyuaj heev tsis tuaj yeem co.
Crystal oscillator yog txhua yam kev co, nrog rau cov yam ntxwv ntawm kev co: zoo li, geometry, zoo, thiab lwm yam., txiav txim siab qhov zaus ntawm kev co.
Crystal oscillators feem ntau yog ua los ntawm quartz lossis ceramic khoom ntxiv rau kev sib xyaw ua ke ntawm cov khoom siv sab hauv, thiab qhov zaus ntawm cov siv lead ua oscillator nyob ntawm qhov tuab ntawm qhov cuam tshuam wafer.
Nyob rau hauv cov nqe lus ntawm kev tsim khoom, qhov loj ntawm lub wafer thiab lub thickness ntawm lub wafer yog ze ze rau qhov zaus ntawm cov siv lead ua. Feem ntau hais lus, ntau zaus ntawm quartz siv lead ua, qhov thinner quartz wafer yuav tsum. Piv txwv li, 40MHz quartz siv lead ua yuav tsum muaj wafer tuab ntawm 41.75 microns, uas yog qhov ua tau zoo, tab sis 100MHz quartz siv lead ua yuav tsum muaj wafer tuab ntawm 16.7 microns. Txawm hais tias lub thickness tuaj yeem ua tiav, qhov poob siab heev, thiab cov wafer yuav tawg thaum nws muab tso rau hauv maj mam tom qab ua tiav cov khoom tiav. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum siv peb zaug overtone, tsib zaug overtone, thiab xya zaus overtone thev naus laus zis kom ua tiav cov siv lead ua ntau zaus. Piv txwv li, rau ib tug siv lead ua nrog ib tug tseem ceeb zaus ntawm 20MHz, ib tug siv lead ua ntawm 100MHz yuav muab tau tom qab tsib overtones. Feem ntau hais lus, nyob rau hauv cov nqe lus ntawm kev paub, hauv qab 40MHz yog lub hauv paus siv lead ua zaus, thaum siab tshaj 40MHz, nws yog lub overtone siv lead ua. Yog li ntawd, nws yog ib qho yooj yim to taub yog vim li cas muaj ntau yam active siv lead ua zaus yog ib txwm suav hais tias yog siab zaus, thiab tus nqi kuj tseem kim, tus nqi ntawm cov active siv lead ua ntxiv rau cov nti sab hauv yog thinner, thiab ces muaj ib tug oscillation daim ntxiv rau nws tus kheej. .
Tom qab ntawd lub hauv paus zaus siv lead ua thiab overtone siv lead ua nyob rau hauv kev siv ntawm dab tsi yuav tsis siv. Muaj qhov sib txawv ntawm kev siv ob, xws li lub hauv paus zaus siv lead ua, tsuas yog yuav tsum tau nkag mus rau qhov tsim nyog capacitance tuaj yeem ua haujlwm, thaum lub overtone siv lead ua yuav tsum tau inductance thiab capacitance nrog kev siv lub overtone zaus, txwv tsis pub nws tsuas tuaj yeem vibrate. lub hauv paus zaus.
Overtone siv lead ua oscillator taw qhia: quartz siv lead ua oscillator yog ua los ntawm quartz wafer, thiab ntau zaus ntawm quartz siv lead ua oscillator sib xws rau qhov loj me, thickness ntawm quartz wafer tsis zoo ib yam.
