Detector thiab qhia txog qib meter
Txhawm rau ua kom pom cov teeb liab amplified los ntawm lub ntsuas, lub ntsuas hluav taws xob kuj tseem xav tau los hloov cov teeb liab hloov hluav taws xob sai rau hauv qeeb qeeb hloov DC voltage teeb liab. Qhov loj ntawm qhov DC voltage yuav tsum yog proportional rau qhov loj ntawm lub teeb liab input. Raws li kev ntsuas qhov xav tau, cov ntsuas ntsuas tuaj yeem muab faib ua cov ntsuas ncov, ntsuas nruab nrab, thiab cov hauv paus ntsiab lus square detectors. Lub ncov detector tuaj yeem muab tus nqi siab tshaj plaws nyob rau hauv ib lub sijhawm luv luv, thaum lub ntsuas nruab nrab tuaj yeem ntsuas nws tus nqi nruab nrab hauv ib lub sijhawm luv luv. Tsuas yog cov suab paj nruag zoo li rab phom uas yuav tsum tau ntsuas lawv qhov siab tshaj plaws, lub hauv paus tus nqi detectors feem ntau yog siv hauv kev ntsuas feem ntau.
Lub hauv paus txhais tau tias square detector tuaj yeem square, nruab nrab, thiab square hauv paus ntawm AC teeb liab kom tau txais lub hauv paus txhais tau tias square tus nqi ntawm qhov voltage, thiab thaum kawg xa cov hauv paus ntsiab lus square voltage teeb liab mus rau qhov taw qhia lub taub hau. Lub taub hau taw qhia yog lub ntsuas hluav taws xob, thiab ntev npaum li nws qhov ntsuas tau ntsuas rau qee yam, tus nqi decibel ntawm lub suab nrov tuaj yeem nyeem ncaj qha los ntawm lub taub hau. Lub damping ntawm lub suab ntsuas lub taub hau feem ntau muaj ob lub zog: "ceev" thiab "slow". Qhov nruab nrab lub sij hawm rau "ceev" hom yog 0.27s, uas yog heev ze rau lub physiological nruab nrab lub sij hawm ntawm tib neeg lub cev auditory; Qhov nruab nrab lub sij hawm rau "slow" iav yog 1.05s. Thaum ntsuas lub suab nrov tsis tu ncua lossis sau cov txheej txheem suab hloov pauv, siv hom "ceev" yog qhov tsim nyog dua; Thaum qhov kev hloov pauv ntawm qhov ntsuas lub suab nrov yog qhov loj, siv lub iav "slow" yog qhov tsim nyog dua.
Txhawm rau ua kom tau raws li qhov xav tau ntawm qhov chaw ntsuas, lub suab ntsuas ntsuas feem ntau muaj cov duab peb sab, uas tuaj yeem kho rau ntawm daim duab peb sab brackets raws li xav tau.
Feem ntau muaj qee qhov ntsaws rau ntawm lub vaj huam sib luag. Yog hais tias cov sockets txuas nrog portable octave band lim, lawv tuaj yeem tsim ib qho yooj yim spectrum tsom xam rau me me ntawm qhov chaw siv; Yog tias ua ke nrog lub kaw lus kaw, lub suab nrov ntawm qhov chaw tuaj yeem kaw thiab khaws cia rau hauv daim kab xev sib nqus rau kev tshawb fawb ntxiv; Yog tias piv rau oscilloscope "
