Pointer multimeter yuav ua li cas ntsuas tus hais lus zoo lossis phem
Pointer multimeter siv txoj kev kos duab, pointer multimeter feem ntau tuaj yeem ntsuas AC thiab DC voltage dab tsi tam sim no thiab tsis kam, pointer multimeter ntsig txog thev naus laus zis cov lus pointer multimeter yuav ua li cas txhawm rau ntsuas horn zoo lossis phem
Tus pointer multimeter hu rau ohm cov ntaub ntawv, thiab tom qab ntawd lub multimeter hu rau ib ohm, random pointer multimeter, cwj mem liab, cwj mem dub luv rau xoom, kom qhov ntsuas qhov tseeb, qhov ntsuas ntawm lub horn tsis tas yuav cuam tshuam qhov lub rooj, ncaj qha mus rau lub multimeter hloov mus rau ib ohm, lub rooj cwj mem casually caij mus rau lub horn zoo, tsis zoo ncej yuav casually kov lub horn nrog rau lwm tus cwj mem lwm ncej, tsuav yog lub suab yog hnov los nias, ua pov thawj tias lub horn. yog qhov zoo, ntawm qhov tsis sib xws, tsis muaj suab, ua pov thawj tias nws yog qhov phem. Cov saum toj no yog ib tug pointer multimeter los txiav txim tus hais lus zoo phem phem ntsuas txoj kev, txiav txim tus hais lus yog zoo los yog phem, nrog ib tug pointer multimeter ib ohm cov ntaub ntawv, qhov zoo tshaj plaws ntsuas.
Kev txheeb xyuas ntawm lub horn siv cov ntaub ntawv tshawb nrhiav tsis kam yog, lub horn yog tsav los ntawm tooj liab hlau winding kuj coil, raws li impedance yuav tsum tau muab faib ua 4 ohms, 8 ohms, thiab lwm yam, tsuav yog tam sim no los ntawm zoo. Qhov no yog qhov kev paub tau kawm 55 xyoo dhau los, thaum lawv sib sau ua ke lawv tus kheej xya-tube transistor semiconductor xov tooj cua, kho transistor TV. Tam sim no nws yog tag nrho cov chips sib xyaw ua ke, thiab cov kev paub tau hloov kho, tab sis cov ntsiab lus ntawm lub horn tsis tau hloov ntau.
