Yuav ua li cas yog cov sib txawv ntawm cov resistors

Thaum tsim kev kos duab tsim nyog paub meej. Resistors yog cov tseem ceeb tshaj plaws. Nws yog ib qhov nyuaj rau xav txog tej yam lub tswvyim txawm tsib qhov chaw, peb txog qhov twg lawv nrhiav tau lawv daim ntawv thov.

Yuav ua li cas yog ib tug resistor

Lub sij hawm twb tsim ua tsaug rau cov Latin "Resisto", uas muaj peev xwm muab txhais raws li "thaum nws." Lub ntsiab parameter cov ntaub ntawv hais, uas muab kev txaus siab yog lub nominal kuj. Nws yog ntsuas nyob rau hauv ohms (tus naj npawb ntawm ohms). Nominal qhov tseem ceeb qhia ntaus ntawv vaj tse nyob. Tab sis qhov tiag daim duab yuav ua tau txawv me ntsis. Feem ntau, qhov no nuance koom nrog siv cov chav kawm ntawv thiab precision tolerances. Cov peb tam sim no xav txog. Yog hais tias koj yuav tsis to taub ib yam dab tsi txog cov kev resistors, yees duab los pab txhim kho nws.

Cov chav kawm ntawm cov neeg thiab tolerances

Nyob rau hauv dav dav, lub loj tshaj kev txaus siab kawm ntawv. Lawv yog cov peb:

1. Thawj. Nws muab rau deviations txog li tsib feem pua los ntawm hais tias nominal tus nqi.
2. Ob txhais. Nws muab rau deviations uas yuav ncav cuag kaum feem pua ntawm cov nominal tus nqi.
3. Thib peb. Cov no muaj xws li uas loj hloov yuav ncav cuag nees nkaum feem pua ntawm cov nominal tus nqi.

Thiab yog dab tsi yog hais tias xws loj hloov yog tsis tsim nyog? Muaj precision resistors, uas muab views ntawm ib tug tshaj plaws ntawm kev sib txawv:

1. 0.01%.
2. 0,02%.
3. 0.05%.
4. 0.1%.
5. 0.2%.
6. 1%.
7. 2%.

lwm yam kev xaiv

Ntawm tseem ceeb qhov tseem ceeb nyob rau hauv cov kev xaiv caij rau hauv Circuit Court tsis yog limiting cov ua hauj lwm voltage, nominal hwj chim dissipation thiab lub kub coefficient ntawm kuj. Cov yav tas daim duab qhia tau hais tias yuav ua li cas hloov nyob rau hauv lub degree scale yuav cuam tshuam rau lub lag luam ntawm tus dais. Nyob rau hauv no daim duab tej zaum yuav muab tau ntau zog los yog tsis nyob rau hauv lub siv cov ntaub ntawv uas nyob rau hauv qhov siv thiab ua. Nyob hwj chim dissipation qhia tau hais tias ib tug ciam caij siv. Yog hais tias lub mov yam ntxwv yog ntau tshaj thiaj yuav tiav, lub resistor muaj peev xwm tsuas hlawv. Los ntawm limiting cov ua hauj lwm voltage twb paub lawm xws li ib qhov taw qhia, nyob rau lub txhim khu kev qha lag luam ntawm lub apparatus yuav tau muab.

Lub ntsiab yam ntawm resistors

Lawv yog cov plaub:

1. Tsis-tswj:

a) qhov.

2. unregulated:

a) luas;

b) cov tsiaj.

3. Thermistors.

4. Photoresistors.

Unregulated tsau resistors yog muab faib ntxiv rau hauv tsis muaj / hlau. Nyob rau hauv lub caij nyoog kawg no hom yog ntxiv qhov txhab hlau li mus muaj ib tug loj resistivity. Piav txog kev tsau resistors nyob rau hauv daim ntawv ntawm cov voos, uas yog ib qho kev xaus lus. Tus nqi ntawm cov pub hwj chim dissipation teev nyob rau hauv ib geometric duab. Yog hais tias tus kuj muaj nqis yog nyob rau hauv lub chav 0 999 ohms, cov kev ntsuas rau lwm cov tsis feem ntau teev. Tiam sis yog tias qhov no daim duab ntau tshaj li ib txhiab, los yog ib tug lab, lub designations siv ohms thiab megohms, ntsig txog. Yog hais tias daim duab qhia txog los yog tej zaum nws yuav hloov thaum lub sij hawm muaj nqis, ntxiv *. Vim hais tias ntawm no yog txawv hom ntawm resistors tsis yooj yim txawv.

nce mus nce los hais

Peb mus txuas ntxiv mus xav txog tej yam ntawm resistors. Qhov no hom ntawm ntaus ntawv yuav tseem muab hu ua ib nce mus nce los. Lawv kuj yuav yog los ntawm xoom mus rau lub nominal tus nqi. Lawv muaj peev xwm kuj yuav / hlau. Tus thawj hom yog ib tug conductive txheej uas yog thov mus rau lub dielectric phaj li cov arc, nyob rau lub resilient hu yog tsiv uas yog mounted rau cov qag. nws txav yog nqa tawm, yog hais tias xav hloov cov kuj muaj nqis. Nyob ntawm seb ib tug xov tooj ntawm cov nta ntawm qhov chaw yuav raug hloov nyob rau hauv li kev sib raug:

1. Tawm.
2. Logarithmic.
3. Exponential.

Trimmer resistors

Lawv tsis muaj lub projecting axis. Hloov cov ciaj ciam ntawm no hom ntawm resistors yog tsuas tau nrog ib tug ntswj ntsia hlau los yog tsis siv neeg / cov neeg kho tshuab ntaus ntawv uas yuav ua tau nws txoj kev ua. Qhov no thiab yav dhau los hom resistors siv nyob rau hauv tus neeg mob uas tus neeg muaj lub hwj chim los tswj cov lawv, piv txwv li, hais lus.

thermistors

Yog li ntawd hu ua semiconductor hais, thaum qhov hluav taws xob Circuit Court nyob rau hauv uas ib tug taw qhia xws li kuj txawv nrog kub. Thaum nws txo qis nws nce. Yog hais tias qhov kub thiab txias txo, cov kuj tsub kom. Yog hais tias tus nkhaus txheej txheem tsiv mus rau ib sab (magnification qab), ces qhov no yog hu ua PTC caij.

photoresists

Yog li ntawd hu ua hais, nyob rau hauv uas lub parameter index mas nws txawv nyob rau hauv tus ntawm lub teeb (thiab nyob rau hauv tej rooj plaub, thiab electromagnetic) tawg. Raws li ib tug txoj cai, siv photoresists muaj zoo photoelectric nyhuv. Lawv kuj txo thaum lawv raug mus rau lub teeb. Photoresists muaj ib tug yooj yim tsim, me me luaj li cas thiab siab rhiab heev, uas tso cai rau lawv siv nyob rau hauv photoelectric, txee, tswj, kev tswj thiab kev tswj pab kiag li lawm, sensors thiab ntau lwm yam pab kiag li lawm.

xaus

Ntawm no muaj xws li resistors, hom, hom phiaj, txoj ntsiab cai ntawm cov lag luam ntawm cov pab kiag li lawm.