Los ntawm kev txuas lub microphone mus rau lub suab nrov, koj tuaj yeem tsim tawm tus neeg hais lus lub suab ntawm kev nce ntxiv. Nyob rau tib lub sijhawm, koj tuaj yeem hais lus nyob rau hauv pem hauv ntej ntawm lub microphone kom yau, yam tsis muaj kev tawm, thiab txhua tus neeg tuaj saib rau thaj chaw uas tus neeg hais lus tau teeb tsa yuav hnov koj lub suab.
Cov Lus Qhia
Kauj ruam 1
Nco ntsoov tias kev ua kom nrov nrov ntawm kev hais lus nrog lub microphone, amplifier thiab hais lus yog suav tias yog kev yug menyuam tsuas yog los ntawm qhov pom ntawm lub cev, thiab tsis yog los ntawm qhov pom ntawm kev cai lij choj. Raws li qhov kawg ntawm cov qauv no, nws zoo dua rau cov ntsiab lus ntawm kev ua haujlwm rau pej xeem - thiab tom qab ntawd tsuas yog tias txoj kev nkag mus hauv lub tsev yog dawb, lossis muaj cov neeg tseem ceeb uas tsis koom nrog tsev neeg ib txwm muaj.
Kauj ruam 2
Txoj kev lub microphone txuas nrog lub amplifier nyob ntawm lub cev txoj cai ntawm tus thawj. Yog hais tias lub microphone yog qhov ua kom zoo, thaum hais lus rau nws, nws tus kheej tsim hluav taws xob hloov pauv, qhov dav dav thiab cov duab uas nyob ntawm qhov ntim thiab qhov ntawm lub suab hais. Tab sis qhov voltage qhov tawm los ntawm xws li lub microphone yog qhov tsis lees paub. Yog hais tias lub suab txuas tsis rhiab txaus, muab tso rau qhov ntsuas ua ntej ntawm nws cov lus qhia. Thiab yog tias qhov zaus teb ntawm lub tswv yim theem ntawm lub suab txuas ntxiv tau tsim rau lub ntsej muag txawv ntawm lub microphone, nruab rau cov khoom siv ua ntej no nrog kev kho lub voj kom tsis txhob bubbling.
Kauj ruam 3
Lub tshuab hluav taws xob microphone yuav tsum muaj lub zog hluav taws xob sab nraud thiab coj qee txoj haujlwm coj los ua kom nrov dua lub teeb liab. Txuas nws hauv series nrog thawj winding ntawm txuam transformer thiab siv cov voltage uas teev hauv lub microphone kev qhia tshwj xeeb rau hauv Circuit Court no. Txuas cov xov tooj ntawm theem ob ntawm lub tshuab hloov pauv mus rau kev tawm tswv yim ntawm cov suab txuas ntxiv, uas, vim muaj qhov tseem ceeb ntawm cov teeb liab, qee qhov xwm txheej tsuas muaj qhov theem tsim tawm (cov kev daws teeb meem no muaj nyob rau qee qhov qub megaphones).
Kauj ruam 4
Lub electret microphone muaj me me MOSFET preamplifier hauv cov tsev. Thaum muaj kev sib txuas, nws yuav tsum polarity: lub davhlau ya nyob twg txuas nrog lub cev tsis zoo. Txuas nws rau lub zog siv hluav taws xob (qhov hluav taws xob ntawm 1, 5 lossis 3 V, nyob ntawm seb hom) los ntawm qhov resistor ntawm ob peb kilo-ohms, thiab tshem tawm cov teeb liab los ntawm cov tsis muaj qhov muaj zog nrog cov muaj peev xwm ntawm ob peb feem kaum ntawm microfarad. Daim npav suab twb muaj txhua yam tsim nyog rau kev ua haujlwm ntawm hluav taws xob electret: qhov khoom siv hluav taws xob, qhov ntsuas tawm, thiab lub zog rov qab. Sab nraum, mus rau lub tsho liab, koj tsuas yog xav tau txuas lub microphone xwb, tsim rau 1.5 V.
Kauj ruam 5
Yog hais tias lub microphone nyob ze rau ntawm cov neeg hais lus, lus qhuab qhia tswv yim yog qhov ua tau, uas ua tau nws tus kheej hauv daim ntawv ntawm hum ntawm hloov suab, poob tawm lub suab. Nws tuaj yeem tshem tawm los ntawm txav lub microphone mus rau ntawm cov neeg hais lus, txo qis ntim, siv cov khoom siv ua cov khoom siv sib txawv lossis cov khoos phis tawm tshwj xeeb. Tab sis kev sib txawv ntawm lub microphone txawv yuav muab cov txiaj ntsig tau zoo dua. Nws cov qog sib txuas nrog qhov chaw nyob ib puag ncig ntawm ob sab. Yog tias cov hais lus nyob deb, lub suab cuam tshuam rau daim nyias nyias kuj yog los ntawm ob tog nrog cov phiajcim rov qab, thiab nws tsis co. Thaum hais lus nyob rau hauv pem hauv ntej ntawm lub microphone, lub suab cuam tshuam rau daim nyias nyias tsuas yog los ntawm ib sab, thiab lub microphone pom tau tias nws zoo ib yam li ib txwm muaj.
