Amplifier vs Repeater
Amplifier thiab repeater yog ob hom hluav taws xob hluav taws xob siv hauv kev sib txuas lus. Feem ntau kev sib txuas lus tshwm sim ntawm ob lub ntsiab lus (hu ua xa thiab tau txais cov ntsiab lus) los ntawm ib lub xov tooj, wireless lossis optical nruab nrab. Transmitter xa cov teeb liab uas muaj qee cov ntaub ntawv thiab tom qab taug kev deb, feem ntau, lub teeb liab tsis muaj zog (attenuated) vim lub zog poob hauv nruab nrab. Yog li ntawd, nws yuav tsum tau txhim kho (los yog amplified). Amplifier yog lub voj voog uas nthuav tawm cov teeb liab tsis muaj zog rau lub teeb liab nrog lub zog ntau dua. Qee lub sij hawm, qhov teeb meem no tshwm sim ntau ua ntej tuaj txog rau qhov chaw. Nyob rau hauv cov ntaub ntawv no, lub teeb liab yog amplified thiab retransmitted nrog lub hwj chim nce nyob rau hauv ib los yog ntau tshaj nruab nrab cov ntsiab lus. Cov ntsiab lus no hu ua repeaters. Yog li ntawd lub amplifier yog ib qho tseem ceeb ntawm ib tug repeater.
Amplifier
Amplifier (tseem luv luv li amp) yog ib qho hluav taws xob hluav taws xob uas ua kom lub zog ntawm cov teeb liab tawm tswv yim. Muaj ntau hom amplifiers xws li lub suab amplifiers mus rau optical amplifiers ntawm ntau zaus. Lub transistor tuaj yeem teeb tsa ua lub suab nrov yooj yim. Qhov sib piv ntawm cov teeb liab tso zis hluav taws xob rau lub zog hluav taws xob input hu ua 'tau' ntawm amplifier. Kev nce yuav yog ib qho txiaj ntsig nyob ntawm daim ntawv thov. Feem ntau qhov nce tau hloov mus rau hauv decibels (logarithmic nplai) kom yooj yim.
Bandwidth yog lwm qhov tseem ceeb rau cov amplifiers. Nws yog qhov ntau zaus ntawm lub teeb liab uas yog amplified nyob rau hauv txoj kev xav. 3dB bandwidth yog tus qauv ntsuas rau amplifiers. Efficiency, linearity thiab slew npaum li cas yog ib co ntawm lwm yam tsis yuav tsum tau xav txog thaum tsim ib tug amplifier Circuit Court.
Repeater
Tus repeater yog ib qho hluav taws xob hluav taws xob uas tau txais lub teeb liab thiab rov xa cov teeb liab tib yam nrog lub zog siab dua. Yog li ntawd, ib tug repeater muaj ib lub teeb liab receiver, amplifier thiab transmitter. Repeaters feem ntau siv nyob rau hauv submarine kev sib txuas lus cables raws li cov teeb liab yuav attenuated rau ib tug random nrov thaum mus txawv tebchaws xws li ib tug deb. Ntau hom repeaters muaj ntau hom kev teeb tsa nyob ntawm qhov nruab nrab kis. Yog hais tias qhov nruab nrab yog microwaves, repeater tej zaum yuav muaj cov kav hlau txais xov thiab waveguides. Yog hais tias qhov nruab nrab yog kho qhov muag nws yuav muaj cov duab ntes thiab lub teeb emitters.
Qhov txawv ntawm Amplifier thiab Repeater
1. Amplifier yog siv los nthuav lub teeb liab, qhov uas repeater yog siv los txais thiab rov xa cov teeb liab nrog lub zog nce.
2. Repeater muaj lub amplifier ua ib feem ntawm nws.
3. Qee lub sij hawm, amplifiers qhia qee lub suab nrov rau lub teeb liab, whereas repeaters muaj suab nrov tshem tawm qhov chaw.
