Dab tsi yog qhov txawv ntawm cov lim dej ua haujlwm thiab cov lim dej tsis zoo?

Cov ntxaij lim dej nquag thiab cov lim dej tsis zoo yog ob hom lim dej uas feem ntau siv hauv hluav taws xob circuits. Txawm hais tias lawv txhua tus tuaj yeem siv los lim qee qhov zaus hauv cov hluav taws xob hluav taws xob, tseem muaj qee qhov sib txawv ntawm lawv.
1. Lub hauv paus ntsiab lus ua haujlwm
Cov lim dej tsis zoo feem ntau yog nyob ntawm cov khoom siv passive xws li capacitors, inductors, resistors, thiab lwm yam los lim cov cim. Lawv tsuas tuaj yeem ua qhov tsawg zaus, nruab nrab zaus, thiab qhov siab zaus ntawm cov teeb liab tawm tswv yim thiab lim lawv tawm nyias. Passive lim tsis muaj amplifiers, yog li lawv tsis tuaj yeem nce lub zog ntawm lub teeb liab. Cov lim dej tsis zoo xws li RC lim, RL lim, LC lim, thiab lwm yam.
Cov lim dej nquag tuaj yeem txhim kho lub teeb liab lub zog thiab lim cov zaus tshwj xeeb hauv cov teeb liab. Lawv siv cov amplifiers los ua kom nrov cov tswv yim tawm tswv yim thiab tom qab ntawd pub rau hauv cov lim dej kom muab cov teeb liab ua tiav. Cov lim dej nquag muaj xws li cov lim dej qis, cov lim dej siab dhau, cov lim lim band-pass, thiab cov lim nres band.
2. Bandwidth
Lub bandwidth ntawm passive lim feem ntau yog nqaim. Qhov no yog vim hais tias passive Cheebtsam tsis muaj amplification muaj peev xwm thiab tsuas muaj peev xwm muab txwv lim los.
Lub bandwidth ntawm cov lim dej feem ntau yog dav dua vim tias lawv muaj amplifiers los txhim kho lub teeb liab lub zog, yog li ua kom muaj kev ntseeg siab thiab kev ua haujlwm ntawm lub lim.
3. Sab nraud fais fab mov
Cov lim dej tsis muaj zog tsis tas yuav muaj lub zog sab nraud. Vim lawv tsis muaj amplifiers, lawv tsuas yog yuav tsum tau siv input signals thiab passive circuits rau cov teeb liab ua.
Cov ntxaij lim dej nquag xav tau lub zog hluav taws xob sab nraud los muab qhov voltage thiab tam sim no xav tau los ntawm lub tshuab hluav taws xob. Qhov no txhais tau tias lawv xav tau ntau lub circuits los txhawb lawv txoj haujlwm.
4. Kev ruaj ntseg
Cov ntxaij lim dej tsis muaj zog yog qhov ruaj khov vim tias lawv tsis muaj lub suab nrov los qhia lub suab nrov thiab cuam tshuam. Lawv feem ntau tuaj yeem ua haujlwm ntev ntev yam tsis tas yuav hloov kho.
Cov ntxaij lim dej nquag yuav tsum tau ua tib zoo tsim thiab hloov kho. Lub xub ntiag ntawm amplifiers yuav qhia lub suab nrov thiab distortion, uas yuav tsum tau calibration meej los xyuas kom meej lawv cov hauj lwm zoo.
Nyob rau hauv luv luv, nquag lim thiab passive lim txhua tus muaj lawv tus yam ntxwv. Qhov kev xaiv ntawm lim nyob ntawm seb hom lim koj xav tau dab tsi. Hauv kev siv tswv yim, cov ntxaij lim dej sib txawv yuav tsum raug xaiv raws li cov xwm txheej tshwj xeeb.