Yuav ua li cas kho lub buzzer ntawm ib qho analog multimeter uas tsis muaj suab
Rau cov feem ntau siv mf47 pointer multimeter, qee cov qauv tuaj nrog kev kuaj kab. Uas yog hais, buzzer txuas nrog hauv cov koob hauv Circuit Court. Txoj kev kuaj pom cov buzzer; Cov iav no yog ib sab ntawm cov khoom tiv thaiv cov iav r * 1 ω.
Cov iav no feem ntau yog siv los sai sai ntawm cov xwm txheej ntawm Circuit Court. Thaum nws raug ntsuas kom nyob, lub buzzer yuav tau muab tso tawm lub suab beep. Nws tsis tsim nyog los saib ntawm rab koob pom ntawm pillionateter nrog koj lub qhov muag kom nkag siab txog / tawm ntawm Circuit Court.
Firstly, zoo li lub resistor iav, qhov ntsuas xav tau xoom. Nyob rau lub sijhawm no, lub buzzer yuav emit lub suab ntev ntev ntawm 1kHz thaum nws ua haujlwm, thiab ntsuas tau tuaj yeem nqa tawm. Thaum cov neeg tsis kam nqi ntawm cov ntsuas ntsuas ntsuas yog hauv qab 10 ω, lub suab nrov yuav tawm suab nrov. Nws yuav tsum tau sau tseg tias lub suab siv ntawm cov buzzer yog qhov ua tau zoo tshaj plaws hauv Circuit Court (piv txwv li cov suab me me tau tawm los ntawm lub suab nrov). Nyob rau lub sijhawm no, tus ntaus cim tus nqi yog kwv yees li R * 3 (siv tus nqi).
Rau cov taw tes ntawm cov pointer multimeter, kev puas tsuaj rau lub buzzer feem ntau tshwm sim los ntawm tus neeg siv ua yuam kev teeb tsa lub buzzer iav kom ntsuas, ua rau muaj kev puas tsuaj. Txhawm rau muab cov lus nug nrog kev nkag siab meej txog kev kho cov duab buzzer, Kuv xav qhia nrog koj ib qho qauv ntawm tus taw tes ntawm tus pointer multimeter.
Muaj ob hom buzzers, ib qho yog piezoelectric ceramic buzer hniav, thiab lwm yam yog hluav taws xob hluav taws xob. Cov neeg sib txawv tuaj yeem siv cov sib txawv. Lub piezoeltricer ceramic buzzer yog ntsuas nrog kev sib xyaw thiab muaj txiaj ntsig zoo heev thiab muaj qee lub suab tsis kam lees paub thaum ntsuas nrog tus multimeter.
