Capacitive microphone rau lub suab ntsuas ntsuas
Lub condenser microphone yog lub microphone zoo rau kev kaw suab, thiab nws cov kev siv suav nrog kev hu nkauj solo, saxophone, flute, steel yeeb nkab lossis woodwind instruments, acoustic guitar lossis acoustic bass. Lub condenser microphone yog tsim rau txhua yam kev siv uas xav tau lub suab zoo thiab meej. Vim nws cov qauv ruaj khov thiab ruaj khov thiab muaj peev xwm tswj tau lub suab siab, condenser microphones yog qhov kev xaiv zoo rau ntawm qhov chaw siv lub suab los yog kaw.
Lwm qhov kev siv condenser microphone yog hu ua electret microphone, uas muaj cov yam ntxwv ntawm qhov me me, qhov ntau zaus, siab ncaj ncees, thiab tus nqi qis. Nws tau siv dav hauv cov khoom siv hluav taws xob xws li cov khoom siv sib txuas lus thiab cov khoom siv hauv tsev. Lub diaphragm ntawm lub electret microphone twb tau txais kev kho mob siab-voltage polarization thaum lub sij hawm tsim khoom, uas yuav nqa tau ib qho nqi mus tas li, yog li tsis tas yuav ntxiv cov polarization voltage ntxiv. Rau kev txav mus los thiab lwm yam yuav tsum tau ua, electret condenser microphones tuaj yeem ua me me, uas yuav cuam tshuam rau lub suab zoo.
Lub hauv paus ntsiab lus ntawm capacitive microphones
Lub suab khaws lub hauv paus ntsiab lus ntawm lub condenser microphone yog siv cov zaj duab xis uas tsis tshua muaj kub-plated raws li ib tug ncej ntawm lub capacitor, uas yog sib cais los ntawm ob peb millimeters thiab muaj lwm taag electrode, tsim ib tug capacitor ntawm ob peb P farads. Lub nyias zaj duab xis electrode vibrates nrog lub suab yoj, ua rau lub capacitance hloov thiab tsim cov teeb liab hluav taws xob. Raws li lub capacitor no tsuas muaj ob peb P farads (1 farad=1000000000P farad), nws cov kev tiv thaiv sab hauv yog siab heev, kom mus txog qib G ohms (1G ohms=100000000} ohms), xav tau ib lub voj voog. los hloov lub impedance ntawm no G ohms mus rau hauv universal impedance ntawm ib ncig ntawm 600 ohms. Qhov Circuit Court no, tseem hu ua preamplifier Circuit Court, feem ntau yog sib xyaw ua ke hauv lub condenser microphone thiab xav tau lub zog xav tau los ua lub zog rau hauv Circuit Court. Peb feem ntau xa mus rau cov khoom siv hluav taws xob uas xav tau rau condenser microphones raws li cov khoom siv hluav taws xob zoo, uas feem ntau suav nrog 12V, 36V, 48V, thiab lwm yam, nyob ntawm qhov xwm txheej microphone. Nws yog qhov tseeb vim hais tias ntawm lub neej ntawm lub preamplifier Circuit Court no uas condenser microphones yuav tsum tau powered los ntawm fantasy fais fab mov thiaj li yuav ua tau zoo. Capacitor microphones thiab fantasy hwj chim khoom siv feem ntau muaj siab rhiab heev, ntau rhiab dua li feem ntau siv dynamic microphones. Hauv lwm lo lus, txawm hais tias lub condenser microphone siv rau kev kaw hauv computer lossis lwm yam khoom siv, lub zog xav tau yog qhov tsim nyog, thiab lub suab kaw tsis tsawg dua li ntawm lub microphone dynamic.
