Tus resistor yog cov khoom siv ntau tshaj plaws ua rau hauv ib qho hluav taws xob hluav taws xob. Nws tuaj yeem pom nyob txhua qhov chaw: los ntawm lub tshuab ntxhua khaub ncaws yooj yim mus rau lub computer niaj hnub. Txhawm rau qhia lawv cov khoom, ob hom kev cim yog siv: thawj yog cov xim cim ntawm cov resistors los ntawm kev siv ntau xim rings rau rooj plaub, qhov thib ob yog alphanumeric.
Signation
Ntawm cov ntaub ntawv ntawm cov resistors thiab capacitors ntawm qhov loj me, lawv cov nominal resistances (capacitances) raug cim siv cov ntawv sau luv luv rau units ntawm qhov loj, thiab ib sab ntawm lawv yog qhov sib txawv ntawm qhov tshaj tawm tus nqi, piv txwv li: 1.5 10%, 33 Ohm 20%. Xws li qhov tseem ceeb yog encoded nyob rau hauv cov xim cim ntawm resistors. Lub encryption ntawm cov denominations ntawm cov khoom me me muaj ib txheej tshwj xeeb ntawm cov cim alphanumeric. Tab sis nrog rau qhov no, niaj hnub no mnemonic code yog dav siv, uas yog, xim rings uas ua rau cov xim cim ntawm resistors. Raws li xws li ib tug system, chav tsev ntawm kuj Ohm yog coded nrog tsab ntawv (E), 1000 Ohm - as (K), megaohm - nqaim (M). Rated peev xwm ntawm resistors los ntawm100-910 ohms yog qhia nyob rau hauv feem ntawm ib kilo-ohm, thiab qhov ntau ntawm 100,000-910,000 yog mega-ohms. Nyob rau hauv cov ntaub ntawv ntawm kev nthuav qhia lub nominal tsis kam raws li ib tug integer, tsab ntawv tsim yog muab tso rau tom qab cov zauv - ZZE (33 Ohm), 1M (1 MΩ). Kev sau ntawv nrog tus lej lej tsawg dua ib qho muab cov ntawv sau ua ntej ntawm tus lej, piv txwv li, M47 (470 kOhm). Thiab nyob rau hauv cov ntaub ntawv ntawm ib tug integer nrog ib tug zauv feem, tsab ntawv yog sau es tsis txhob ntawm ib tug comma tom qab: 1E5 (1.5 Ohm), 1M5 (1.5 MΩ). Qhov kev kam rau ib txwm tam sim no yog cim nyob rau hauv kab ntawm cov ntaub ntawv tiv thaiv: 5%, 10%, 15%. Cov xim cim ntawm cov resistor tuaj yeem ua ke ob hom kev cim.
xim coding
Nws muaj nyob rau hauv kev kos lub plhaub sab nraud ntawm lub cuab yeej nrog 3 lossis ntau dua xim concentric kab txaij. Txhua txoj kev colouring muaj qee tus lej muaj nuj nqis, nthuav tawm cov khoom ntawm qhov tsis kam ntawm tus resistor. Feem ntau, qhov kawg bar qhia qhov kev cia siab ntawm cov khoom, thiab cov thawj tuav qhia txog kev tiv thaiv. Piv txwv li, ntawm ib qho cim nrog 4 kab txaij, thawj ob qhov encode qhov luaj li cas ntawm lub capacitance (Ohm), thiab qhov thib peb ua tus sib npaug rau tus nqi hais. Cov xim cim ntawm cov resistors tuaj yeem deciphered yog tias cov khoom tau muab tso rau kom lub dav sawb thiab tag nrho cov rings tom qab nws nyob ze rau sab laug tes. Tom qab ntawd koj yuav tsum siv cov lus sib piv uas pab qhia meej lub ntsiab lus ntawm qhov sib txawv.
Lwm tus qauv
Cov xim cim ntawm cov resistors txawv teb chaws tsis tawm txhua yam kom tsis meej pem. Qhov tseeb yog tias rau cov khoom siv hauv tsev lawv tus kheej cov cim yog siv, thiab rau cov neeg txawv teb chaws - lwm tus. Qee cov tuam ntxhab txawm hloov cov qauv, tsim lawv tus kheej xim. Cov cim txawv txawv yog siv los qhia qhov txawv ntawm cov khoom lag luam uas tau tsim raws li MIL cov cai, uas txawv ntawm cov khoom lag luam thiab cov cim hauv tsev, tuaj yeem tshaj tawm cov khoom tiv thaiv hluav taws, thiab lwm yam. Piv txwv li, lub tuam txhab "PHILIPS" qhia tus nqi ntawm cov resistors raws li kev cai nyob txhua qhov chaw, i.e. thawj tus lej yog nyob rau hauv ohms, thiab qhov kawg yog tus multiplier. Nyob ntawm qhov kev tshaj tawm qhov tseeb ntawm tus resistor, nws yog txhais ua 3-4 cim. Qhov sib txawv ntawm qhov niaj zaus encoding nyob rau hauv lub ntsiab lus ntawm 7, 8 thiab 9 tus lej kawg.
