Hluav taws xob amplifiers yog cov khoom siv tshwj xeeb uas ua rau lub zog, qhov hluav taws xob lossis qhov tam sim no ntawm cov khoom xa tuaj. Lawv lub hom phiaj thiab cov ntsiab cai ntawm kev ua haujlwm yog nyob ntawm hom tshwj xeeb ntawm cov cuab yeej, uas muaj ntau heev. Lawv tau siv los sau cov studios, TV thiab xov tooj cua, thiab pab tau txais Wi-Fi cov cim thiab cov teeb liab los ntawm qhov chaw. Thiab qhov no tsis yog tag nrho cov npe ntawm cov haujlwm, vim tias nws nyuaj rau overestimate tus nqi ntawm cov khoom siv no.
Triodes thiab thaum ntxov amplifiers
Thaum pib ntawm lub xyoo pua 20th, lub ntiaj teb tau ntsib kev loj hlob sai ntawm kev siv tshuab. Mechanical engineering, kev lag luam, lub zog tsim. Nws yog lub sijhawm no uas muaj kev tshawb fawb xws li electronics tau yug los. Thaum xub thawj, nws tsis muaj kev siv dav dav, tab sis tom qab ib nrab xyoo pua, qhov kev taw qhia no tau dhau los ua qhov tseem ceeb tshaj plaws rau tib neeg kev vam meej. Txhua yam uas tib neeg siv niaj hnub no yuav ua tsis tau yam tsis muaj kev txhim kho hluav taws xob. Ib qho tseem ceeb ntawm lub sijhawm ntawd yog kev tsim cov cuab yeej hu ua triode.
Thawjtus qauv ntawm cov cuab yeej no yog lub iav teeb nrog peb qhov hluav taws xob tiv tauj thiab tau tsim los hloov lub tswv yim teeb liab ntawm cov hluav taws xob tam sim no. Qhov kev hloov pauv tau tshwm sim los ntawm kev nthuav tawm lub teeb liab input. Yog li, thawj lub tshuab hluav taws xob hauv keeb kwm tau tshwm sim, uas thaum kaj ntug ntawm lub xyoo pua ua rau nws muaj peev xwm ua kom muaj kev cuam tshuam hauv kev lag luam kev sib txuas lus - thawj wireless telegraph tau tsim.
Cov Ntsiab Lus Tseem Ceeb
Lub hauv paus ntsiab lus tseem ceeb ntawm kev ua haujlwm ntawm txhua lub tshuab hluav taws xob ntawm cov khoom siv hluav taws xob, tsis hais nws lub hom phiaj ua haujlwm, yog vim muaj qhov hloov me me ntawm qhov tseem ceeb ntawm cov hluav taws xob tam sim no thiab / lossis qhov hluav taws xob ntawm cov khoom siv. amplifying Circuit Court, muaj ib qho tseem ceeb nce nyob rau hauv cov kev txwv no ntawm cov zis, uas yuav muab tso rau hauv kev xyaum.
Qhov tseem ceeb ntawm txhua lub tshuab hluav taws xob yog lub cuab yeej hu ua transistor. Nws muaj peb cais semiconductor ntsiab uas muaj hluav taws xob hu - ib tug collector, puag, emitter. Thaum ib qho kev hloov pauv tam sim no ntws los ntawm lawv, nyob ntawm nws cov kev taw qhia, lub transistor amplifies los yog attenuates lub hwj chim ntawm input signal.
Amplifier parameters
Tus yam ntxwv tseem ceeb tshaj plaws ntawm lub amplifier yog qhov nce, thiab nws yog sib npaug ntawm qhov sib piv ntawm tus nqi parameter ntawm qhov kev nkag mus rau tus nqi ntawm qhov ntsuas ntawm qhov tso zis ntawm Circuit Court. Qhov tseeb, qhov ntsuas no muab lub tswv yim tseem ceeb ntawm qhov zoo ntawm cov cuab yeej thiab nws cov peev xwm. Lwm qhov tseem ceeb parameter yog qhov amplitude yam ntxwv. Nyob rau hauv qhov tseeb, qhov no yog ib tug haumxeeb dependence ntawm lub amplitude ntawm cov zis qhia rauinput signal qhov tseem ceeb. Qhov tseem ceeb ntawm qhov ntsuas no nyob rau hauv qhov tseeb tias qhov kev vam khom no tsis yog-linear, uas txhais tau hais tias lub voj voog yuav hnov mob sib txawv rau qhov sib txawv ntawm cov teeb liab ntawm cov khoom siv. Qhov thib peb tseem ceeb parameter ntawm ib qho hluav taws xob amplifier yog qhov zaus teb, uas qhia tau hais tias qhov kev cia siab ntawm qhov nce nqi ntawm qhov zaus ntawm lub teeb liab tawm tswv yim. Raws li nws hloov tawm hauv kev xyaum, ntawm qhov sib txawv ntawm qhov sib txawv tam sim no, kev nthuav dav tshwm sim hauv ntau txoj kev.
Kev faib tawm
Muaj ntau cov cim qhia los ntawm qee hom amplifiers txawv. Thawj yog zaus. Cov khoom siv tsawg zaus muaj peev xwm nce tus nqi tsis ntau tshaj li ib puas kilohertz. Ntawm cov zaus siab, nws loj hlob nyob rau hauv thaj tsam ntawm 100 kHz txog 100 MHz, qee zaum me ntsis ntxiv. Kuj tseem muaj cov khoom siv hu ua "xaiv" ua haujlwm hauv qee qhov me me zaus. Cov khoom siv thib plaub muaj qhov dav tshaj plaws. Broadband muaj peev xwm amplifying ntawm 10 Hz mus rau 100 MHz.
Lwm yam lus muaj feem cuam tshuam nrog qhov tseeb tias cov khoom siv muaj cov khoom nquag. Nws tuaj yeem yog, piv txwv li, transistor. Muab faib semiconductor, microwave amplifiers, diode, raj.
Ib yam tshiab tshaj plaws yog parametric, qhov twg qhov nce hauv lub teeb liab lub zog tshwm sim los ntawm lub zog ntawm qhov tsim tawm sab nraud. Lub capacitance ntawm cov khoom tsis-linear inductive nyob rau hauv hluav taws xob Circuit Court hloov qee zaus. Muaj cov diode amplifying cov cuab yeej siv los xa suab hauv xov tooj cua receivers.
Ntaukev faib los ntawm cov hom yog paub. Lawv yog cov cim los ntawm cov tsiaj ntawv loj ntawm cov tsiaj ntawv Latin. Txog rau xyoo 60s ntawm lub xyoo pua xeem, tsuas muaj plaub chav kawm: A, B, C, D. Tom qab, cov thev naus laus zis tau txhim kho thiab ua kom nyuaj, ntxiv hom hom, subclasses, qhov sib txawv voltage amplifiers tshwm.
Tshaj tawm hauv paus
Qhov tseem ceeb tshaj plaws tsis zoo cuam tshuam rau qhov zoo ntawm lub teeb liab TV yog qhov kev ncua deb ntawm qhov chaw (TV ntauwd). Yog tias qhov kev ncua deb ntawm lub TV ntauwd siab heev uas tus kav hlau txais xov tsuas tuaj yeem ntes tsis tau lub teeb liab, nws ua rau muaj kev nkag siab zoo rau suav nrog TV amplifier hauv lub network.
Lub teeb liab TV yog qhov nyuaj ntawm electromagnetic impulse uas nqa cov ntaub ntawv video thiab suab. Vim li no, amplifiers rau TV kav hlau txais xov txawv txawv ntawm cov khoom siv hauv xov tooj cua. Muaj ntau lub TV amplifiers, sib txawv ntawm cov yam ntxwv thiab kev ua haujlwm.
Lawv feem ntau muab faib ua ob pawg - analog teeb liab thiab digital TV amplifiers (DVB-T2). Nws tseem tsim nyog coj mus rau hauv tus account tias qhov kev xaiv ntawm cov cuab yeej nyob ntawm seb muaj pes tsawg tus neeg txais TV koj xav tau xa cov teeb liab mus rau.
Mobile Applications
Cov cuab yeej tseem ceeb tshaj plaws rau tus neeg niaj hnub no yog, ntawm chav kawm, lub xov tooj ntawm tes. Niaj hnub no, muaj ntau txhiab lab cov khoom siv sib txuas lus hauv lub ntiaj teb. Tab sis yuav ua li cas siv lawv yog tias tsis muaj cov xov tooj ntawm tes? Lub xov tooj hloov mus ua ib qho khoom ua si kim xwb thaum tus neeg siv khoom nyob rau hauv qhov chaw uas tsis muaj kev pab cuam ntawm lub xov tooj ntawm tes. Txhua yam khoom siv mobilemuaj qhov txuas amplifier. Qhov tseeb yog tias ib lub kav hlau txais xov built-in kom tau txais lub teeb liab los ntawm tus neeg teb xov tooj ntawm tes yuav tsis txaus vim qhov tseeb tias lub teeb liab tsis muaj zog nrog kev ncua deb ntawm qhov chaw.
Txhawm rau kev sib txuas lus mus rau qhov chaw tsis muaj kev cuam tshuam, lub suab sib txuas lus tshwj xeeb hauv lub xov tooj ua rau lub zog ntawm lub teeb liab ntes tau los ntawm tus kav hlau txais xov thiab txhais rau hauv daim ntawv yooj yim rau cov neeg siv khoom. Tab sis qee zaum txawm tias qhov no built-in amplifier tsis txaus thaum qhov kev pab them nqi av tsis muaj zog. Thiab tom qab ntawd cov khoom siv tshwj xeeb sab nraud raug siv - cov khoom siv rov ua dua uas mus cais ntawm cov khoom siv hauv xov tooj.
Wi-Fi Application
Nyob rau hnub no cov ntaub ntawv hnub nyoog, nws nyuaj rau xav txog koj lub neej yam tsis muaj kev nkag mus rau lub Ntiaj Teb Wide Web. Hom nrov tshaj plaws ntawm kev sib txuas wireless yog undoubtedly Wi-Fi. Txawm li cas los xij, cov cuab yeej no muaj qhov tsis txaus ntseeg - ib qho kev txwv. Thaum tsis muaj kev cuam tshuam, cov khoom siv tuaj yeem tau txais lub network ntawm qhov deb ntawm tsuas yog mus txog 100 meters. Qhov no tsis yog ib txwm yooj yim, tshwj xeeb tshaj yog rau cov tuam txhab loj lossis cov tuam txhab uas nws cov ceg ntoo nyob hauv ntau qhov chaw hauv nroog.
WiFi amplifiers tshem tawm qhov tsis zoo no. Cov no yog cov khoom siv tshwj xeeb repeater uas tau txais cov teeb liab hluav taws xob tsis muaj zog, hloov nws mus rau ib qho muaj zog dua thiab xa rov qab mus rau cov neeg txais xov tooj hauv Is Taws Nem nyob ze. WiFi boosters tau dhau los ua neeg nyiam nyob hauv lub tebchaws, ua rau hom kev sib txuas hauv internet no nrov li lub xov tooj ntawm tes.
Hloov lub suab zaus
Ib tug neeg tuaj yeem hnov suab tsuas yog nyob hauv qee qhov txwvkev xaav. Qhov tseeb, tib neeg tsis tuaj yeem teb cov suab paj nruag nrog ntau dua 20 txhiab Hz. Ultrasonic tsis hnov tsuas yog los ntawm qee hom tsiaj, feem ntau thaum tsaus ntuj. Raws li rau qhov tsawg zaus sawv daws yuav, ntawm no qhov pib rau ib tug neeg yog los ntawm 16 Hz. Txhua yam qis yog hu ua infrasound. Cov nthwv dej zoo sib xws yog tsim thaum lub meteorite ntog, thaum cua daj cua dub. Tab sis cov cim zoo li no tsis hnov tsw rau tib neeg pob ntseg.
Lub tshuab hluav taws xob zaus siv ntau yam khoom siv hauv tsev thiab khoom siv. Cov no yog TVs, xov tooj cua transmitters, suab paj nruag chaw. Kuj tseem muaj cov khoom siv tshwj xeeb cais. Lawv cov ntsiab lus yog kom ua tiav qhov ntau zaus, sib npaug li qhov tib neeg lub hlwb muaj peev xwm pom tau. Tsawg zaus hloov dua siab tshiab, lub zog ntawm oscillations hloov. Hauv qee cov khoom siv, nws tuaj yeem kho cov ntoo, qhov ntim qib. Nrog lub built-in equalizer, koj tuaj yeem kho qhov amplitude ntawm lub teeb liab.
Siv xov tooj cua tubs
Lub tshuab nqus tsev yog siv rau hauv lub raj amplifiers. Xws li cov khoom siv tau nrov hauv kev kaw suab paj nruag thiab kev tsim tawm suab paj nruag. Lawv qhov zoo dua yog tias ntxiv rau kom tau txais cov zaus tsim nyog, nws tuaj yeem tau txais cov suab nrov ntxiv. Lawv hu ua harmonics, thiab yog hais tias nyob rau hauv cov khoom siv semiconductor lawv yog ob qho tib si thiab khib, ces hauv cov khoom siv raj - feem ntau tsuas yog cov thawj. Lub suab nrov dua, suab paj nruag zoo dua.
Lub hwj chim ntawm lub raj amplifiers qis dua hauv cov transistor, tab sis lawv cov circuits tau yooj yim dua, tsis muaj ntau qhov nyuaj. Nws ntseeg tau tias cov khoom siv zoo li no yog qhov ntau duaxa suab, tshwj xeeb tshaj yog muaj ntau zaus. Kev tsim cov ntses bass thaj tsam yuav muaj teeb meem. Yog li ntawd, nws raug nquahu kom mloog cov suab paj nruag feem ntau lossis jazz siv cov khoom siv.
About monoblocks
Muaj ntau yam khoom siv hluav taws xob, uas yog hu ua monoblock. Lawv lub hwj chim txuas mus rau ib lub suab channel nkaus xwb. Li no lub sij hawm, qhov twg "mono" txhais tau tias "ib leeg". Cov chav zoo sib xws tau siv los ntawm cov kws ntaus suab paj nruag los ntawm cov neeg paub zoo nkauj xws li Grateful Dead. Amplifiers khiav ntawm cov raj, tab sis kuj muaj cov transistors. Lawv qhov zoo dua: lawv muab lub suab zoo heev.
Rau cov khoom siv lub tso suab, ob lub monoblocks yuav tsum tau. Qhov no yog vim muaj kev cuam tshuam ntawm sab xis lossis sab laug suab channel. Tsis tas li ntawd, nws yog ntshaw kom yuav lub pre-amplifier. Monoblocks yog cov khoom siv kuaj lub sijhawm. Lawv tshwm sim thawj zaug ntawm lawv hom thiab muaj ntau yam rau niaj hnub no. Disadvantages - tus nqi siab heev thiab tshwj xeeb yuav tsum tau rau kev tso kawm thiab siv. Yog li ntawd, tsuas yog cov kws ntaus nkauj tshaj lij uas muaj txoj hauv kev tuaj yeem them taus cov khoom siv suab zoo li no.
