Ua hauj lwm zoo amplifier: qhov kev piav qhia, lub ntsiab cai ntawm lub lag luam, cov kev siv ntawm

Analog electronics - ib qho ntawm feem tseem ceeb seem ntawm lub electronics, uas tau ua ib tug stepping pob zeb txav los ntawm resistors, rheostats thiab ammeters rau cov "kev ntsuas". Siv ib tug ua ke ntawm ntau hluav taws xob Cheebtsam thiab txoj kev ua ib tug complex circuits, analog electronics tau tso cai lawv siv mus cuag cov duab ntawm lub nyuaj cov khoom siv. Niaj hnub no, analog electronics - lub hauv paus rau hnub no txoj kev complex hluav taws xob circuitry.

Ib tug analog electronics - op-amp, uas yog ib tug complex multistage tswvyim siv semiconductors. Nyob rau hauv lub integral daim ntawv ntawm qhov ntsuas no muaj ob tug inputs, uas yog tus inverted lub rau txhua lwm yam. Nws yog noteworthy hais tias ib tug ntawm cov yam ntxwv Hom teeb liab tau txais ntawm yog lub loj nqi ntawm cov qhov nce.

Integral tiav implies hais tias cov ua hauj lwm zoo amplifier yog muab tso rau mus khiav nyob rau hauv ib tug ntawm cov ua hauj lwm nti blocks. Lub circuitry ntawm no ntaus ntawv, raws li tau zoo raws li tag nrho cov lwm yam hais, tau txais ib tug tshwj xeeb los. Raws li ib tug txoj cai, ua hauj lwm amplifier Circuit Court kos duab sawv cev rau ib tug loj daim duab peb sab. Tsis ntev los no, txawm li cas los, yuav ua tau kom nrhiav tau ib txoj kev cim rau ib tug amplifier - ib tug duab plaub nrog ib tug daim duab peb sab hauv. Feem ntau cov yuav, xws li ib tug los yog tswvcuab rau piv cov lus piv txwv txog tus ntaus ntawv nyob rau hauv lub thaiv kos duab.

Ua hauj lwm zoo amplifier daim ntaub ntawv niaj hnub no yog heev ntau haiv neeg. Cov multistage pab kiag li lawm yog siv nyob rau hauv ib tug ntau yam ntawm amplifiers rau txawv Pib ntsais koj teeb. Tsis tas li ntawd, cov ua hauj lwm zoo amplifier yog feem ntau siv nyob rau hauv ib tug generator ntawm hluav taws xob Pib ntsais koj teeb, raws li zoo raws li cov ntxaij lim dej rau lub suab ntau zaus. Nyob rau hauv tas li ntawd, lub hwj chim tau los ua ib tug indispensable cuab tam nyob rau hauv cov kev tswj system daim duab ntawm ib tug plurality ntawm lub cev ntau (xws li, huab cua noj).

Lub hauv paus ntsiab lus ntawm cov lag luam ntawm cov ua hauj amplifier yog feem ntau yog muab piv rau cov apothecary teev, lub koob uas yog deflected nyob rau hauv cov kev taw qhia qhov chaw uas tus load rau qhov loj tshaj plaws khob. Tsuas yog tus ua hauj lwm zoo amplifier yog tsim nyog los nco ntsoov ib tug ntawm cov khob los ntawm ib tug "+", qhov thib ob - "-" thiab cov measured nqi los hloov volts es tsis txhob grams. Yog li, lub amplifier ua ib tug voltage sib piv module rau ib tug thiab lub thib ob lub tswv yim. (- txwv tsis pub tsis zoo) yog hais tias tus tej zaum txawv nyob rau hauv cov ncaj tswv yim yog ntau dua qhov rov qab, qhov zoo voltage yog generated ntawm cov qhov tso zis.

Rov qab mus rau cov los ntawm ua hauj lwm amplifiers nyob rau hauv lub Circuit Court daim duab yuav tsum tau muab sau tseg hais tias mus saib yog feem ntau denoted los ntawm ib tug "+" thiab cov rov qab - "-". Txawm li cas los, cov cim yuav tsis yeej ib txwm thov! Tej zaum cov schemes nyob rau kev nkag kos npe rau yog tsis teem, tab sis es tsis txhob inverted tswv yim ntawv nyob rau hauv daim ntawv ntawm cov me me voj voog.

Nyob rau hauv thiaj li yuav txo cov rhiab heev ntawm ua hauj lwm zoo amplifier mus rau lub kev deeg tswv yim hluav taws xob lub teeb liab yog muab ntaus rau hauv ib tug ua hauj lwm amplifier CCA - tsis zoo lub tswv yim. Los ntawm kev siv ntawm Circuit Court Cheebtsam xws li ib tug tso tawm compound nrog ib tus inverted lub tswv yim ntawm ib saab resistor, me ntsis hloov los ntawm ib tug muab tswv yim teeb liab yog tsis ntes los ntawm cov ua hauj lwm zoo amplifier thaum lub sij hawm lub lag luam.

Tej zaum rau ua hauj lwm amplifier nyob rau hauv ib tug Circuit Court daim duab ntawm complex pab kiag li lawm siv zoo tswv yim, qhov twg cov compound tsim ib tug zoo tswv yim thiab tso zis ntawm ib saab resistor. ib qho kev nthuav sab nyhuv zoo nkaus li thaum uas siv cov ib tug zoo tswv yim - "hysteresis voj".

Nyob rau hauv xaus, ua hauj lwm amplifiers siv raws li unipolar thaum twg, nyob qhov twg thiab nyob rau hauv bipolar fais fab mov.