Yuav ua li cas yog ib tug resistor - lub ntsiab nta

Muaj coob tus neeg, txawm nyob deb los ntawm cov teeb meem ntawm physics, hluav taws xob engineering, electronics utermine hnov ntawm xws li "tsis kam" los yog ib lo lus tshiab - resistor. Txawm li cas los, ob peb cov neeg paub tias dab tsi nws yog dab tsi thiab nws yog siv. Yog li ntawd yog dab tsi yog ib tug resistor?

Teb rau lo lus nug no yog tej yam yooj yim. Resistor - ib qho ntawm feem ntau hluav taws xob Cheebtsam nyob rau hauv xov tooj cua, tele-video-suab khoom. Lub ntsiab yam ntxwv ntawm lub resistors yog nws kuj, uas yog ntsuas nyob rau hauv cov chav nyob ntawm ohms ntsuas. Muaj ob lub ntsiab hom ntawm cov pab kiag li lawm yog cov hom phiaj kev thiab thiaj li hu ua ruaj khov. Yuav ua li cas yog ib tug ruaj khov resistor? Nws yog ib heev kim pab kiag li lawm uas yog siv nyob rau hauv lub high-raug cov khoom. Yeej siv tau cov hom phiaj resistors.

Kuj cov hom phiaj kev resistors tej zaum yuav txawv tsis pub dhau txog +/- 10%. Lub kuj nyob rau hauv lub thiaj li hu ua kub coefficient ntawm kuj (nyob rau hauv lub tshwj xeeb ntaub ntawv muaj txo TCR). Feem ntau cov qauv resistor no zoo tshaj. Qhov no txhais tau tias ib qho kev nce nyob rau hauv kub nce thiab cov kuj.

Yuav ua li cas yog cov kuj nyob rau hauv cov nqe lus ntawm nws tus yam ntxwv? Ib tug ntawm cov yam tseem ceeb cov yam ntxwv ntawm cov resistors yuav hu ua lub hwj chim dissipation. Qhov no yog lub hwj chim uas nws muaj peev xwm dissipate tsis phem tshaj kev puas tsuaj. Lub hwj chim, raws li peb paub, yog ntsuas nyob rau hauv chav nyob ntawm kev ntsuas raws li Watts. Paub qhov nominal kuj thiab tam sim no ntws los ntawm cov hluav taws xob Circuit Court, yuav payment thiab tso zis. Nws yog situated nyob rau hauv cov mis P = kuv ^ 2 * R, qhov twg P - lub hwj chim, Kuv - tus nqi ntawm amperage, R - nominal resistor. Nws muaj peev xwm yuav xaus lus tias xws li ib tug resistor los ntawm tus taw tes ntawm view ntawm qhov hluav taws xob engineering. Nws yog lub ntsiab yam ntxwv ib feem ntawm tej Circuit Court, uas nws lub ntsiab muaj nuj nqi yog muab ib tug me me (paub) kuj mus rau lub khiav ntawm hluav taws xob tam sim no nyob rau hauv lub Circuit Court rau lub hom phiaj ntawm voltage kev cai thiab tam sim no. feem ntau siv ib tug thiaj li hu ua ballast rau lub hom phiaj ntawm regulating tus voltage nyob rau hauv lub Circuit Court. Yuav ua li cas yog lub ballast resistor? Qhov no ntaus ntawv txuas mus rau lub network thiab absorbs ib co ntawm cov tshaj voltage, li no equalizing lub ntxhee nyob rau hauv tus neeg ceg ntawm lub Circuit Court thiab lub tswj voltage stability. Nyob rau cov hauv paus ntsiab lus yog tsim los rau LED thiab resistor. Rau cov LED yeej tsis tam sim ntawd hlawv los ntawm xeem dhau tam sim no los ntawm nws, kev cob cog rua thereto nyob rau hauv series tokogasitelny resistor.

Lub kuj ntawm lub resistor nyob li cov khoom uas nws muaj. Nws kuj nyob ntawm qhov shear cheeb tsam (qhov ntau thaj tsam ntawm lub cutoff, tsawg kuj) los ntawm lub resistor ntev (tus ntev nws yog, qhov correspondingly ntau dua kuj).

Resistors conveniently cim los ntawm cov xim los yog rau cov signage. Nrog kev pab los ntawm xws li ib tug labeling yog tau kawm cov tseem ceeb tshaj plaws vaj tse ntawm tej resistor, namely tus nqi ntawm nws cov kuj. Kawm dab tsi nws txhais tau hais tias ib tug xim los yog daim duab yuav ua tau ib tug passport los yog ib tug ntaus ntawv chaw tsim tshuaj paus los yog khoom (piv txwv li, nyob rau hauv website).