Npav resistors - yog peb txoj kev

Txhua tus neeg uas muab kev koom tes nyob rau hauv lub kho ntawm hluav taws xob khoom, paub hais tias nws yog tej zaum tsim nyog los txiav txim seb tus txheej saib ntawm lub resistor ntawm nws denomination. Qhov yooj yim txoj kev uas yuav ntsuas lub kuj nrog ib tug ohmmeter, tab sis qhov teeb meem yog tsis ib txwm tau mus unsolder nws tsis ua kom cov Circuit Court board, tshwj xeeb tshaj yog ib tug multi-layered, tab sis nws tshwm sim hais tias muaj yog xav phem cais tsis hais txog lub meej mom ntawm lub sab hauv hu. Yog hais tias koj muaj ib tug Circuit Court, nws yog yooj yim - koj yuav saib nws thiab pom hais tias tus R18 yog, piv txwv li, 47 ohms. Thiab yog hais tias nws tsis tau, thiab koj yuav tsum to taub, thiab lub tswvyim yuav tau kos?

Qhov zoo ces, manufacturers ntawm hluav taws xob Cheebtsam pom zoo nrog txhua lwm yam, thiab muaj ib tug txheej txheem npav resistors. Yeej muaj tseeb, nws tau undergone kev hloov nyob rau hauv tsis ntev los no decades.

Feem ntau nyob rau hauv peb lub sij hawm yog ib cov xim-coded resistors. Nws yog heev yooj yim, thiab nyeem cov denomination, tuav ib tug yooj yim duab los qhia decoder momentary tshaj plaws. Qhov no ntaus ntawv yog muaj dav, muaj nyob rau hauv tej xov tooj cua, thiab yog pheej yig heev, li ntawd, nco ntsoov lub xim nqi yog tsis tsim nyog. Npav resistors yog hais tias lub kuj thov xim rings ntawm cov xim txawv, txhua tus uas qhia ib tug xov tooj, ib tug d los yog cov neeg.

Strips muaj nyob rau ntawm peb mus rau tsib. Nyeem lawv ua tus thawj, los ze zog mus rau ib ntawm cov lus. Piv txwv li, plaub ib daim hlab. Thawj - xim av, cov lwm yam - dub, peb - liab, plaub - grey. Nws yog tsim nyog los hu cov decoder cov xim, uas ploj lawm peb (yuav tsum xaiv txoj hauj lwm ntawm "tsis muaj"). Tag nws nrog ib tug neeg ntawm 1 kW 0, 05%. Yog hais tias peb bands, cov neeg yog 20%.

Tej zaum kuj muaj yog ib tug yuav tsum tau hais nrog cov laus Soviet technology, uas yog tseem nyob rau hauv kev siv. Thaum nws twb cem, nws ciali clumsy thiab dab tuag, tab sis lub sij hawm tau pom amazing resilience ntawm ib co kuaj ntawm cov khoom no, thiab nws yog tam sim no txawm nyob rau hauv lub sij hawm xa mus rau raws li "vintage." Npav Soviet ua resistors txawm yooj yim kom muaj xim, lawv tsuas sau cov denomination, piv txwv li, 4K7 txhais tau tias 4700 ohms. Hais tias yog tag nrho. Cias thiab kom meej meej. Ib drawback - lub inscription tej zaum yuav qab, lub Soviet RADIOZAVOD tsis tshua muaj siv "sawv-up" los ua ke ntawm cov kuj, nws yog hlub los ntawm lub Japanese txuag board qhov chaw.

Lub miniaturization ntawm hluav taws xob khoom manufacturers muab nws nyob rau hauv pem hauv ntej ntawm qhov yuav tsum tau mus txua txoj kev tshiab ntawm installation. Classical soldering resistors los ntawm lub qhov nyob rau hauv lub Rooj Tswjhwm Saib nyob rau hauv lub "sawv" los yog "pw" txoj hauj lwm yuav siv sij hawm mus dhau ntau qhov chaw, thiab qhov no yog ib txoj kev tshiab ntawm assembling ib microplate - smd. Nyob rau hauv no English acronym - encrypted peb lo lus: «nto» - nto, «mount» - installation thiab «technology» - nws yog tseeb hais tias txhais tau tias. Qhov chaw me me yog soldered ncaj qha mus rau tus khiav nto, tsis muaj qhov, thiab ob txhais ceg. Nws coj tus tshiab labeling resistors, thiab lwm yam, xws li diodes thiab capacitors zoo li.

Npav smd resistors yog dog dig reminiscent ntawm qhov zoo qub Soviet txoj kev. Lawv kuj luam xov tooj thiab cov tsiaj ntawv. Qhov txawv yog tseem muaj. Tsab ntawv no tsis ib txwm muaj, yog tias tsim nyog, «R» yog siv raws li lub Paub Faib point.

Piv txwv li, 2183 txhais tau tias 218 yuav tsum tau khoo los ntawm 1000, puv 218 ohms. Kuj, nrog ib tug siab tev taus ntawm mus txog rau 10% cov cim muaj plaub tug lej tom qab, tus tom kawg yog hais txog cov neeg uas mus tsim ib tug kaum thiab khoo los ntawm cov kev tshwm sim ntawm ib tug peb-tus lej tsim los ntawm tus thawj ob tug lej.

Me ntsis nyuaj smd resistors nrog ntau dua zoo hauv chav kawm ntawv, nrog rau ib tug siab tev taus ntawm 1%. Ntawm no yog lub degree ntawm kaum tawm poob lawm tsab ntawv, piv txwv li, D - 10 yog cubed. Yog hais tias lub resistor yog inscribed 10D, nws yog 10 ohms.

Nyob rau hauv tas li ntawd mus ntsib ntxhuav, cov ti teg taw yuav xav tau ib tug magnifying khob, raws li cov cim yog heev me me!