Capacitor 104: Nws txhais li cas?

Heev feem ntau, los ntawm beginners thiab pib xyaum ua xov tooj cua los ntawm cov neeg nyob deb muab tshem tawm los ntawm lub electronics, tab sis rau ib tug yog vim li cas los yog lwm ntsib nrog rau kho ntawm hluav taws xob, nws tseem tau mus hnov cov lus nug xws li: "Capacitor 104 - dab tsi nws txhais li cas? Yuav ua li cas to taub tau tus nqi ntawm lub capacitors labeling? "Nyob rau hauv no tsab xov xwm, peb yuav sim parse no nrov lo lus nug.

Tej npav ntawm capacitors (104) tsuas muaj nyob rau hauv tej hub khoom. Qhov no yog vim lub fact tias lawv, tsis zoo li electrolysis, yog heev me me qhov ntev, thiab yog li ntawd lawv lub cev tsuas yog tsis muaj chaw rau ib tug ua tiav thiab ncauj lus kom ntxaws ntaub ntawv ntawm tag nrho cov ntaub ntawv, xws li cov khoom muaj peev xwm, hom thiab thiaj li nyob.

Lub hub capacitor (104) yog ib feem ntawm tej hluav taws xob Circuit Court. Cov khoom uas siv peb txog qhov twg nws yog tsim nyog los ua hauj lwm nrog Pib ntsais koj teeb uas hloov lawv polarity. Ceramic capacitors muaj zoo zaus yam ntxwv, tsis tshua muaj to tam sim no, tsis muaj tsis, me me luaj li cas thiab tsis muaj nqi. Nyob rau hauv cov ntaub ntawv sau npe nyob qhov twg cov saum toj no-piav yuav tsum tau yam ntxwv, tej hub capacitors yog indispensable, tab sis txog thaum nyuam qhuav, cov teeb meem txuam nrog rau tus txheej txheem ntawm lawv cov khoom, cov pab kiag li lawm coj niche nrog me me muaj peev xwm kiag li lawm. Ntau tsis ntev los, tej hub capacitors nrog ib tug muaj peev xwm ntawm 10 MF ntaus nqi raws li kab txawv, cov nqi ntawm tej khoom lawm tsis tas siab. Cov kev loj hlob ntawm niaj hnub siv tshuab tau tso cai rau hnub tim ib tug xov tooj ntawm tuam txab mus cuag peev xwm ntawm 100 uf tej hub capacitors thiab tshaj tawm lub imminent kev kawm tau ntawm ntau tshaj tseem ceeb. Nyob rau hauv tas li ntawd, tus nqi rau tag nrho cov pab pawg ntawm cov khoom uas muaj tau koos.

Peb tam sim no tig mus rau lub labeling ntawm tej hub capacitors. Nws yog ib ob hom: ntawm peb los yog plaub tug lej tom qab. Peb npav "104", lub capacitor nrog lub cim hais txog trehznakovoy encoding. Piav ntawm no hom yog heev yooj yim: thawj ob tug lej tom qab sawv cev rau lub capacitance nyob rau hauv picofarads, thiab lub xeem - lub xov tooj ntawm zeros. Wb saib yog dab tsi nws txhais tau hais tias lub capacitor "104". Nws hloov tawm hais tias tus thawj ob tug lej (10) thawv txhais tau tias, thiab rau tom kawg (4) - tus xov tooj ntawm zeros. Li no, lub npav txhais tau tias 104 100000 PF (100 NF los yog 0.1 uf). Raws li koj tau pom, txhua yam yog yooj yim heev. Xws li ib tug hauv daim ntawv ntawm cov ntaubntawv povthawj siv yuav encode ib yam tsawg kawg nkaus tus nqi ntawm 1.0 PF, nws yuav muaj cov nram qab daim ntawv: 010. Yog hais tias nws yog tsim nyog los sau ib capacitance nqi tsawg tshaj li ib picofarad siv Latin ntawv R. Qhov no cov ntaub ntawv yuav muaj cov nram qab daim ntawv: 0R5, uas yog 0.5 PF. Yog hais tias lub peev xwm yog tsawg tshaj li 1.0 PF, ces kawg lej yog muab tso rau 9, nws tsis txhais hais tias nws yog tsim nyog los append 9 zeros. Ntawm no yog ib qho piv txwv txog tej ntaub ntawv - 109 (1.0 PF), 159 (1.5 PF), thiab 689 (6.8 PF).

Tam sim no xav txog chetyrehznakovuyu npav tej hub capacitors. Raws li xws li, thawj peb tug lej tom qab ntawm cov ntaubntawv povthawj siv txhais tau tias nyob rau hauv picofarads capacitance, thiab plaub - lub xov tooj ntawm zeros.

Ntawm no peb yuav tau xyuas seb dab tsi yog qhov capacitor "104". Tam sim no, Yog hais tias koj xav tau tej hub capacitors, koj yuav tau yooj yim to taub yuav ua li cas lub capacitance tus nqi yog kaw nyob rau hauv ib tug ntawm tes. Thiab koj tsis muaj mus nrhiav kev pab.