Resistor - ib tug yooj yim lub caij ntawm electronics

Resistor - yog qhov nyuaj lub caij ntawm xov tooj cua-hluav taws xob circuits, muaj cov cuab yeej rau thaum nws ntws los ntawm nws fais tam sim no. Lub npe ntawm qhov ntsuas los ntawm lub English lo lus thaum nws, uas txhais tau tias - kuj.

Lub nominal resistor nqi ntsuas nyob rau hauv ohms (ohms ohm m?), Tom qab tus paub txog Georg Ohm txoj cai sab, raws li uas tus kuj Circuit Court yog tus piv ntawm voltage rau tam sim no Circuit Court.

Nyob rau hauv kev lag luam, lub resistors yog ua nrog txawv nominal kuj muaj nqis. Muaj peb hom ntawm cov pab kiag li lawm: taag, nce mus nce los, Trimmers.

Taag resistor - nws yog lub feem ntau heev heev cov chav kawm ntawv ntawm cov ntsiab muaj ib qhov impedance. Nyob rau lub vaj tse ntawm xws li ib tug ntaus ntawv yog sau lo, lub ntsiab lus resistor hom, tus nominal kuj muaj nqis yog cov neeg hauv chav kawm ntawv, hwj chim dissipation, thiab lwm tus neeg. Cov lus no yog kho nyob rau hauv ntau txoj kev. Yog li ntawd, koj yuav nrhiav tau cov khoom rau tag nrho cov uas cov ntaub ntawv kaw kev siv xim coding (peb mus rau xya kob transverse bands). Yuav kom nyeem cov qhov tseem ceeb, koj yuav tsum tau siv ib tug tshwj xeeb lub rooj, uas muaj peev xwm yuav nrhiav tau nyob rau hauv cov phau ntawv reference los yog kev piav qhia ntawm no. Qhov thib ob hom ntawm cov ntaubntawv povthawj siv yog alphanumeric. Nrog rau qhov no txoj kev cov ntaub ntawv yog kis tau los ntawm txoj kev cim thiab xaus-npawb tsab. Yog li, lub 10 ohm resistor yuav tsum khij raws li nram no: mlt 10R. Nws txhais tau tias mlt hom ntaus ntawv.

Kuj tsis paub meej resistor - ib tug ntaus ntawv muaj ib qho kev khwv ntawm lub nominal kuj. Nyob rau hauv cov ntaub ntawv xws li ib lub caij tshwm sim kho neeg (teb pob qhov rooj los yog cov ntsia hlau), los ntawm kev uas koj yuav tau teem lub yuav tsum tau kuj muaj tus ntaus ntawv. Nyob rau hauv xws li lub nominal tus nqi qhia nyob rau hauv lub npav alphanumerical daim ntawv - denoted txwv los ntawm yam tsawg kawg nkaus rau nyiaj pab ntau tshaj kuj muaj nqis. Xws li yog lug siv los tswj thiab tswb chaw: raws li lub suab nrov ntawm lwm yam uas, ntau ntau, ntim, zaus nyob rau hauv lub xov tooj cua tau txais cov khoom.

Trimmer - ib tug ntaus ntawv muaj ib qho kev khwv ntawm lub nominal kuj, tab sis nyob rau hauv sib piv rau lub zog, qhov no tsis tseem ceeb txaus ntau yam. Tej yam zoo li yog lug siv nyob rau hauv hluav taws xob circuits. Lawv yog npaj rau kev haum thiab kev cai yuav tsum tau tsis nyob rau hauv lub tsim ntawm cov xov tooj cua los yog precision pab kiag li lawm qhov twg tsis pub nphoo yam ntxwv. Lawv cia rau precisely teem yuav tsum tau kuj, resulting soldered mus rau ruaj desoldering-qhov nominal resistors rau xaiv cov kev kawm muaj nuj nqis.

Dhau li ntawm tus yooj yim tsis, tej thiaj li hu ua cab rezistorasuschestvuet yam ntxwv - capacitance. Yuav ua li cas yog qhov kev xaiv no? Cov cab capacitance ntawm lub resistor yog feem ntau heev me me thiab tshwj xeeb tshaj yog dab tsi tsis cuam tshuam. Nws yog tsim nyog los noj mus rau hauv tus account xwb nyob rau hauv lub tsim ntawm high-precision khoom. Cab capacitance yog tam sim no nyob nruab nrab ntawm lub pin neeg; nws hloov tawm hais tias thaum uas tig mus resistor soldered capacitor. Tsis tas li ntawd, lub thawv kuj tshwm sim ntawm lub resistor thiab nyob ib sab qhov chaw ntawm lub PCB thiab qhov chaw ntawm lub qauv.

Nyob rau hauv qhov nyuag txheej txheem cej luam ntawm lub caij xws li ib tug resistor, peb mus, cov lus qhia ntxiv muaj nyob rau hauv lub muaj electronics phau ntawv.