Resistor qhov tseem ceeb thiab lawv los

Resistor - tus kwv Circuit Court, uas ua hauj lwm pab kom txo tam sim no nyob rau ntawd. Tsis tas li ntawd, resistors yog siv los txo cov kev nyuaj siab nyob rau hauv ib co chaw thiab kev sib cais rau hauv nws cov feem tam sim no. Nyob rau hauv hluav taws xob circuits resistors yog denoted los ntawm me me voos nrog ib tug khub ntawm pins (ib tug nyob rau ob opposite sab). Sia mus thoob ntiajteb resistors yog sawv cev los ntawm ib tug tawg kab.

Resistors yog peb lub ntsiab tsis:

1. Standard kuj (resistor qhov tseem ceeb).
2. Kam rau ua.
3. Fais fab dissipation.

Resistor qhov tseem ceeb - tus nqi ntawm lawv cov nominal kuj, uas yog, tus nqi teev tseg los ntawm lub chaw tsim tshuaj paus. Nominal kuj yog ntsuas nyob rau hauv ohms. Resistors yog siv nyob rau hauv txhua industries, muaj ib tug me ntsis hluav taws xob pab kiag li lawm. Qhov no ua rau ib tug lossis loj ntau yam ntawm kuj tseem ceeb. Txawm li cas los, muaj resistor qhov tseem ceeb, uas yog universal.

Fabricate resistor nrog ib tug tej leej nominal tus nqi yog heev yooj yim, li ntawd, siv cov nqi no raws li ib tug kam rau ua. Piv txwv li, yog tias ib tug kev cai tswjhwm nominal kuj sib npaug zos rau 10 ohms, nyob rau hauv qhov tseeb nws yuav txog 10.1 9,98- ohms. Qhov no yog hu ua tus tau kev ua yuam kev tolerances thiab ntsuas raws li ib tug feem pua.

Fais fab dissipation - ib qho ntawm feem tseem ceeb kev txiav txim resistor. Piav lub ntsiab lus muab tus nqi. Ib tug resistor los ntawm kev uas ib tug hluav taws xob tam sim no yog tsis tu ncua rhuab. Cua sov nyob rau hauv lub tam sim no muaj peev xwm. Txhua resistor muaj ib tug tej yam kub txwv tshaj uas nws overheats thiab txawj tuag li. Dissipation - yog tus nqi ntawm lub hwj chim ntawm lub fais tam sim no, nyob rau lub resistor yuav hlawv. Zoo li lub qhov tseem ceeb ntawm resistors, lub hwj chim dissipation - yog ib tug tas mus li rau txhua ntawm lawv. Nws yog qhia los ntawm cov chaw tsim tshuaj paus. Nyob rau hluav taws xob circuits dissipated hwj chim ntawm tus resistor yuav tsum tau teev. Rau nws los siv inclined, kab rov tav thiab ntsug kab. Los ntawm cov duab nyob rau hauv lub resistor icon kab yog tshwj xeeb ob peb ua ke denoting txawv zog qhov tseem ceeb. Raug qhov tseem ceeb nyob rau hauv me me schemes li ntawm 1/8 watt thiab tsib watts. Fais fab dissipation rau tej resistor yuav xam los ntawm Ohm txoj cai rau subcircuit. Txhais kom meej nws, koj yuav tsum paub qhov tam sim no nyob rau hauv lub Circuit Court thiab lub nominal tus nqi ntawm lub resistor.

Tag nrho cov kev muaj qauv kuj. Uas yog, muaj ib co txheej txheem resistor qhov tseem ceeb. Cov qhov tseem ceeb, nyob rau hauv lem, yog tseem grouped nyob rau hauv kab ntawm lub ntsej muag tseem ceeb ntawm resistors. Rau xws li series DC qhua 6: E6, E12, E24, E48, E96, E192.

Rau tam sim no cov tsiaj ntawv yog tsuas yog siv qee Qib E6 thiab E3. Cov zauv nyob rau hauv lub npe ntawm kab sawv cev rau cov xov tooj uas tau kev nyob rau hauv no series. Piv txwv li, ib tug xov tooj ntawm denominations E6 yuav tsuas tau li nram qab no kuj: 1.0; 1.5; 2.2; 3.3; 4.7; 6.8.