Umbala esephepheni Resistor. Isikhundla amandla resistors isikimu

asetshenziswa Izifunda kagesi for zamanje ukulungiswa resistors. Iyatholakala izinhlobo eziningi zazo ezahlukene. Ukuze anqume yonke ezihlukahlukene imininingwane, ngoba uphawu ngalunye uvo we Resistor. Basuke imakwe ngezindlela ezahlukene, kuya ngokuthi ukuguqulwa.

izinhlobo resistors

Resistor - idivaysi has an ukumelana kagesi, umsebenzi walo main - nokukhawulela wesifunda yamanje. Umkhakha ukhiqiza izinhlobo ezahlukene resistors elisetshenziswa ezihlukahlukene amadivaysi technical. ngezigaba zabo wenziwa ngezindlela ezahlukene, omunye wabo - ubunjalo ushintsho ukumelana. Ngokusho lokhu ngezigaba ihlukanisa 3 izinhlobo resistors:

1. resistors Fixed. Bona akunakwenzeka ezinqumela ushintshe inani ukumelana. Ngu aphoyintimenti, bahlukene zibe izinhlobo ezimbili: izicelo jikelele kanye ethize. Laba ihlukaniswe ekuqokweni ukunemba, ephezulu impedance, ephezulu voltage imvamisa high.
2. Variable resistors (zibizwa ngokuthi ukulungiswa). Babe nekhono lokufeza ukushintsha ukumelana ngokusebenzisa isibambo control. On umklamo sihluke kakhulu. Kukhona yokugezela nge switch, kabili, kathathu (ie ku-eksisi esifanayo ifakwe Resistor ezimbili noma ezintathu) kanye nezinye izinhlobo eziningi.
3. Kusilungisi resistors. Lusebenza ngesikhathi isethaphu zedivayisi lobuchwepheshe kuphela. ukubeka emizimbeni bona zitholakala kuphela ngaphansi screwdriver. It zazikhiqiza izinhlobo eziningi ezinkulu zokuguqulwa ezingafani ezisetshenziswa yila resistors. Zisetshenziswa zonke izinhlobo amadivaysi kagesi nawe-elekthronikhi ezisukela amaphilisi ukufaka enkulu yezimboni.

Ezinye izinhlobo okuxoxwe resistors okukhulunywe ngezansi ziboniswa izithombe.

Indlela Ukwahlukaniswa izingxenye obandayo

Kunezinhlobo 3 izinhlobo eziyisisekelo obandayo zikagesi, likhuliswe, yanyatheliswa futhi micromodules. Ukuze uhlobo ukufakwa ngalinye izakhi zalo, kuyahlukahluka kokubili ngobukhulu nangendlela akheke ngayo. Isetshenziselwa ebusweni obandayo resistors, capacitors futhi Semiconductors. Zitholakala ne imikhondo flying, ukuthi kungenziwa soldered ku circuit. Ngenxa miniaturization kwezinto zikagesi, le ndlela kancane kancane lokuhambisana.
PCB wasebenzisa izingxenye ezincane obujwayelekile ne imikhondo ngoba nokunamathisela ngomthofu ukuze isiliphu wesifunda ibhodi , noma ngaphandle kwazo. Ukuze lezi zakhi nge izingxenye wesifunda ngibabona pads. Izintambo zikagesi ezisobala Okuprintiwe kakhulu zasiza ukwehlisa usayizi imikhiqizo electronic.

Sokunyathelisa obandayo mikromodulnogo wayevame ukusebenzisa SMD-Resistor. Ziyakwazi encane kakhulu ngobukhulu, kulula ukuhlanganisa ne izibhamu ku ephrintiwe wesifunda ebhodi kanye micro-amamojuli. Zitholakala e ezahlukene okuzisholo ukumelana, amandla, kanye nosayizi. I eziphambili zobuchwepheshe ngokuyinhloko asetshenziswa SMD-Resistor.

Ukumelana Okuzisholo futhi kuhlinzwa amandla resistors

Ukumelana Standard, obonakaliswe ohms noma megohms kiloomah, kuba isici eziyisisekelo Resistor. Lokhu value iboniswa imidvwebo wesifunda, lapho isetshenziswa ngqo Resistor ikhodi alphanumeric. Eminyakeni yamuva, ngokuvamile lalisetshenziselwa resistors anemibala.

Eyesibili izici ezibaluleke kakhulu a Resistor - ke sika amandla ukushabalalisa, lubonakaliswa Watts. Noma yimuphi Resistor by odlula wamanje ngokusebenzisa ke uyabaselwa, isb dissipates. Uma la mandla idlula ukubaluleka kuvunyelwe we Resistor usetha ukubhujiswa. Ngaphansi ejwayelekile notation amandla resistors e Isikimu cishe ekhona njalo, lesi silinganiso ngokuvamile ichazwa kanye nezindlu zawo.

Ukubekezelelana ukumelana okuzisholo kanye nokulutheka yayo ku lokushisa

Lokubaluleke kakhulu iyona ngephutha, noma ukuphambuka kusuka kwenani eliyimali, ulinganiswa iphesenti. Kuyinto engenakwenzeka ncamashi ukukhiqiza Resistor imangalelwe ukubaluleka ukumelana iyadingeka ukuba ukuphambuka ukusuka kunani kusengaphambili. Iphutha kuboniswa ngqo emzimbeni, ngokuvamile ngesimo ikhodi imivimbo ezinemibala. Kulinganiselwa njengoba iphesenti okuzisholo ukumelana value.

Lapho kukhona ekushintshashintsheni esikhulu lokushisa, ukunyuswa ukumelana ukubaluleka has lokushisa kwencika noma lokushisa Coefficient ukumelana, izifinyezo - TCR njengoba kulinganiswe amayunithi eyisihlobo ppm / ° C. TCS kubonisa ukuthi ingxenye ukumelana okuzisholo izinguquko Resistor uma inyuka kuma lokushisa (incipha) ngo-1 ° C.

Okunemibandela sokuqhafaza notation Resistor wesifunda

Lapho izifunda umdwebo kudinga ukugcinwa GOST 2.728-74 okunemibandela yezimpawu ingcaca (ASB). I Resistor anoma yiluphi uhlobo - kuyinto mm isikwele 10x4. Ngezinye kwesisekelo salo ihluzo zidalwe for ezinye izinhlobo resistors. Ngaphandle-ASB, inkulumo edingekayo amandla resistors yesifunda, kwenza kubelula ukuhlaziya yayo ngoba inkinga. Ethebuleni ngezansi ahlelwe ASB ukumelana njalo, okubonisa amandla ukushabalalisa.

Ngezansi isithombe ikhombisa resistors elimisiwe amandla ezahlukene.

Okunemibandela notation sokuqhafaza resistors variable

ASB resistors variable zisetshenziswa umqondo kanye resistors fixed, ngokuvumelana nesimo ejwayelekile GOST 2.728-74. Ithebula ubonisa isithombe salezi resistors.

Eziguquguqukayo isithombe futhi kusilungisi aboniswa ngezansi.

Standard ukuqokwa resistors

amazinga International selisho ukumelana okuzisholo we Resistor kule wesifunda kanye Resistor ihlukile kancane. Imithetho yaleli notation, kanye amasampula izibonelo ziboniswa etafuleni.

Ithebula ubonisa ukuthi Ukuqoka cebo njalo ukumelana resistors wenza ikhodi alphanumeric, kuqala kukhona value kwamanani yokumelana ke amayunithi wokulinganisa angakahleleki. I umzimba omkhulu Resistor owamukelwa ezweni izimpawu digital esikhundleni ukhefana ukusebenzisa incwadi uma kuba ohms, wayesebeka R E noma, uma kiloomah, uhlamvu K. Lapho wokugubha megohms esikhundleni ukhefana isetshenziswa uhlamvu M.

Umbala esephepheni of resistors

Umbala esephepheni of resistors senziwa ukuze kube lula ukubeka ulwazi izici lobuchwepheshe kwezindlu zabo. Ukuze wenze lokhu, isicelo eziningana emapheshana umbala imibala ehlukene. Vele UKWABIWA emapheshana eyenziwe imibala ehlukene 12. Ngamunye wabo kunenjongo ayo ethize. Ikhodi umbala lisetshenziswa resistors onqenqemeni ngesikhathi ukunemba kwayo ongaphakeme (20%) lisetshenzisiwe strip 3. Uma ukunemba okungenhla, ukumelana kungabonwa kakade 4 emapheshana.

Lapho ngokunemba high Resistor sisetshenziswa 5-6 emapheshana. Siphawula equkethe 3-4 emapheshana, ezimbili zokuqala ukumela ukubaluleka ukumelana naso, lo strip yesithathu - lena Okuphindaphinda, iyanda yi kwaleli nani. Okulandelayo band senziwe ngokuqondile Resistor. Lapho wokugubha zihlanganisa 5-6 kuphundla 3 zihambisana nezingxenye ukumelana kuqala. Okulandelayo band - kuyisici, strip 5th oluhambisana ukunemba kanye 6th - lokushisa Coefficient.

Ukuqhaqha amakhodi umbala resistors, kukhona amatafula Ukubheka.

resistors SMD

Surface Mount - lena lapho yonke imininingwane kukhona ebhodini kusuka ephrintiwe wesifunda amathrekhi. Kulokhu, musa sokuprakthiza imigodi izingxenye obandayo, basuke soldered amathrekhi. Ngenxa yalesi umkhakha ukufakwa ukhiqiza anhlobonhlobo SMD-izingxenye: resistors, diodes, capacitors, amadivayisi Semiconductor. Lezo zinto ezincane kakhulu kanye nezobuchwepheshe uyakufanelekela ukuba inhlangano ezenzakalelayo. Ukusebenzisa SMD-izingxenye kungaba ngokuphawulekayo ukunqinda imikhiqizo electronic. Surface ukukhweza electronics cishe lwaludlula konke yezinye izinhlobo.

Nge zonke izinzuzo ukufakwa kubhekwa it has eziningi nemiphumela ethile engathandeki.

1. Wanyathelisa wesifunda ibhodi eyenziwe lobu buchwepheshe, ukwesaba kanye nezinye mechanical ukushaqeka imithwalo, njengoba lokhu izingxenye SMD-lilimele.
2. Lezi zingxenye besaba okweqile ngesikhathi nokunamathisela ngomthofu ngenxa umehluko eqinile, bakwazi crack temeratury. Lokhu kungapheleli kunzima ukuthola, ngokuvamile kwenzeka ngesikhathi ukusebenza.

ukuqokwa Standard SMD-Resistor

Okokuqala-SMD resistors kukhona letingemasayizi lahlukene. Usayizi kencanikhulu - 0402, kancane ngaphezulu - 0603. I ukugijima kakhulu usayizi SMD-Resistor - 0805, nokuningi - 1008 in ubukhulu ezilandelayo 1206, kanye elikhulu - 1812 resistors ube usayizi encane kakhulu namandla aphansi kakhulu.

Isikhundla SMD-Resistor by ikhodi ekhethekile zezinombolo. Uma usayizi Resistor kuyinto 0402, ukuthi luncane, it is ayifani. Resistors abanye osayizi ngaphezu kwalokho kuhluke okuzisholo ukumelana ukubekezelelana: 2, 5, 10%. Zonke lezi resistors ziphawulwe namadijithi angu-3. I sokuqala nesesibili salo kubo ukukhombisa mantissa, eyesithathu - Coefficient Okuphindaphinda. Ngokwesibonelo, ikhodi 473 ifundwa njengoba R = 47 ∙ Mashi ¹⁰ ohms = 47 ohms.

Zonke resistors, okuyinto abe 1% ukubekezelelana, kanye nosayizi phezu 0805, ziphawulwe izinombolo ezine. Njengasendabeni yabase langaphambilini, izibalo lokuqala ukukhombisa mantissa ihlelo, futhi isici kubonisa idijithi yokugcina. Ngokwesibonelo, ikhodi 1501 imele ngakho: R = 150 ∙ Januwari ¹⁰ = 1500 ohms = 1.5 kOhm. Ngokufanayo, ukufunda lonke ikhodi.

Umqondo elula

Ukuqokwa elungile Amacebo resistors nezinye izakhi - imfuneko eyisisekelo amazinga isimo ekuklanyweni imikhiqizo electronic kagesi kanye. Sibeka phansi imithetho phezu Amatshwayo resistors, capacitors, inductors nezinye izingxenye wesifunda. Esikhathini umdwebo ubonisa hhayi kuphela Resistor noma ezinye isici wesifunda, kodwa futhi ukumelana layo okuzisholo, namandla, futhi capacitors - voltage yokusebenza. Ngezansi yisibonelo umqondo elula oluxube ebekwe ejwayelekile.

Ulwazi zonke ezivamile notation ingcaca futhi ukufunda amakhodi nezinombolo ukuze izakhi kohlelo kuyokwenza kube lula ukuqonda isimiso okusebenzela kuyo wesifunda. Lesi sihloko sixoxa kuphela resistors futhi izakhi wesifunda okuningi.