Launi coding resistor. Nadi ikon resistors makirci

A lantarki haihuwarka ga halin yanzu gyara resistors ana amfani. Samuwa ne da yawa daban-daban iri iri na su. Don shirya a duk iri-iri na da cikakken bayani, don kowane shigar da alama na resistor. Suna alama a hanyoyi daban-daban, dangane da gyara.

iri resistors

Resistor - a na'urar da cewa yana da wani lantarki juriya, ta babban aiki - a halin yanzu iyakance kewaye. Industry samar daban-daban iri resistors amfani da wani iri-iri fasaha na'urorin. Su rarrabuwa ne da za'ayi a cikin hanyoyi daban-daban, daya daga cikinsu - cikin yanayi na canji a cikin juriya. A cewar wannan rarrabuwa bambanta 3 iri resistors:

1. Kafaffen resistors. Su ne ba zai yiwu ya siddan canja adadin juriya. By ganawa, sun kasu kashi biyu iri: general kuma takamaiman aikace-aikace. A karshen rarrabu a kan alƙawari zuwa daidaici, high-impedance, high-ƙarfin lantarki da kuma high mita.
2. M resistors (an kira su da gyara). Suna da ikon canza juriya ta hanyar kula da makama. A kan wani zane su ne sosai daban-daban. Akwai gidan wanka tare da wani canji, biyu, sau uku (ie a kan wannan axis sanye take da biyu ko uku resistor) da kuma da yawa wasu jinsunan.
3. Trimmer Resistors. Yana shafi kawai a lokacin da saitin da fasaha na'urar. saitin jikin su ne kawai samuwa a karkashin wani sukudireba. Yana samar da manyan yawan daban-daban gyare-gyare na wadannan resistors. Suna amfani da duk wani irin na'urar da na'urorin lantarki jere daga Allunan zuwa manyan masana'antu shigarwa.

Wasu iri tattauna resistors da aka ambata a kasa aka nuna a cikin hotuna.

A rarrabuwa Hanyar hawa aka gyara

Akwai 3 asali iri hawa lantarki, saka, buga da micromodules. Domin kowane irin kafuwa ne ta abubuwa, da suka bambanta ƙwarai biyu a size da kuma zane. Amfani ga surface hawa resistors, capacitors da semiconductors. Su ne samuwa tare da tashi leads, cewa su za a iya soldered cikin kewaye. Saboda da miniaturization na na'urorin lantarki, wannan hanya ne a hankali rasa dacewar.
PCB amfani da wani kananan-sized sassa da take kaiwa ga soldering zuwa wani buga kewaye hukumar , ko ba tare da su. Domin wadannan mahadi da kewaye sassa da lamba gammaye. Buga wayoyi muhimmanci taimake rage girman lantarki kayayyakin.

Domin bugu da hawa mikromodulnogo sau da yawa amfani smd-resistor. Su ne sosai a cikin kananan size, sauki hade tare da na'ura bindigogi a buga kewaye hukumar da micro-kayayyaki. Su ne samuwa a daban-daban maras juriya, da iko, da kuma size. A ci-gaba na'urorin lantarki ne, yafi amfani smd-resistor.

Maras juriya da kuma plated ikon resistors

Standard juriya, bayyana, a ohms ko megohms kiloomah, shi ne ainihin halayyar da resistor. Wannan darajar da aka nuna a cikin kewaye zane-zane, shi ne amfani kai tsaye zuwa resistor a alphanumeric code. A cikin 'yan shekaru, sau da yawa da aka amfani da launi-masu lamba resistors.

Na biyu mafi muhimmanci halayyar wani resistor - shi ikon masha'a, shi ne aka bayyana a cikin watts. Duk wani resistor ta wucewa na yanzu ta hanyar shi ne mai tsanani, Ina nufin lullube dukkanin. Idan wannan ikon ya wuce halatta darajar da resistor kafa, halakarwa. A karkashin Tutar tsarin rubutu ikon resistors a Students kusan ko da yaushe ba, wannan darajar ne sau da yawa amfani da gidaje.

Haƙuri maras juriya da kuma ta dogara a kan zazzabi

Na bayar da muhimmanci ne kuskure, ko karkacewa daga maras muhimmanci darajar, auna a yawan. Ba shi yiwuwa a daidai samar da da'awar resistor tare da juriya darajar ake bukata ya zama mai karkata daga wani qaddara darajar. A kuskure aka nuna kai tsaye a jiki, sau da yawa a cikin wani nau'i na code na launin ratsi. An kiyasta a matsayin wani kaso daga cikin maras juriya darajar.

Inda akwai manyan hawa da sauka a cikin zazzabi, wani babba juriya darajar yana da zazzabi dogara ko zazzabi coefficient na juriya, abbreviations - TCR kamar yadda aka auna a zumunta raka'a ppm / ° C. TCS nuna abin da na maras juriya na resistor canje-canje idan yanayi zazzabi ƙaruwa (raguwa) by 1 ° C.

Tasari zana tsarin rubutu resistor kewaye

Lokacin da jawo haihuwarka bukatar a kiyaye da Gost 2.728-74 matukar a kan mai hoto alamomin (Asb). A resistor na wani irin - shi ne mai murabba'i mai dari 10x4 mm. A karkashi graphics aka halitta ga sauran iri resistors. Bayan Asb, wani nadi ake bukata ikon resistors a kewaye, shi facilitates ta analysis domin gyara matsala. A tebur a kasa an jera da Asb m juriya, na nuna ikon masha'a.

Kasa da m nuna tsayayyen resistors na daban-daban iko.

Tasari zana tsarin rubutu na m resistors

Asb m resistors ana amfani da ra'ayi, kazalika da tsayayyen resistors, bisa ga jihar misali Gost 2.728-74. Tebur nuna siffar wadannan resistors.

The m canji da kuma trimmer aka nuna a kasa.

Standard nadi resistors

International nagartacce don nuna a fakaice da maras muhimmanci juriya na resistor a kewaye da resistor ne kadan daban-daban. Dokokin wannan tsarin rubutu, tare da samfurori da misalai suna nuna a tebur.

Tebur ya nuna cewa nadi a cikin makircinsu m juriya resistors sanya wani alphanumeric code, na farko akwai mai lamba darajar juriya, sa'an nan da raka'a ji. Babban jiki na resistor aka yarda a dijital] aukar maimakon a wakafi domin amfani da harafin idan shi ne ohms, to, ku sanya R E ko, idan kiloomah, da wasika K. Lokacin da alama megohms maimakon a wakafi aka yi amfani da harafin M.

Launi coding na resistors

Launi coding na resistors aka sanya su sa shi sauki to saka bayanai a kan fasaha halaye na su gidaje. Don yin wannan, tambaya da dama launi tube na launi daban-daban. Just nadi tube sanya na 12 launi daban-daban. Kowace daga cikinsu yana da kansa takamaiman ma'ana. A launi code ne amfani da resistors baki a da low daidaito (20%) ne amfani da tsiri 3. Idan daidaito na sama, da juriya za a iya gani riga 4 tube.

Lokacin da high ainihin resistor ne amfani 5-6 tube. A alama dauke 3-4 tube, na farko biyu wakiltar da juriya darajar, da uku tsiri - wannan ne multiplier, shi ne yawaita wannan darajar. Next band ne ainihin resistor. Lokacin da alama hada da 5-6 tube 3 dace da farko juriya. Next band - shi ne mai factor, 5th tsiri yayi dace da daidaito da kuma 6th - zazzabi coefficient.

Don sauya launi lambobin na resistors, akwai abun neman Tables.

Resistors SMD

Surface Dutsen - wannan shi ne lokacin da duk wasu bayanai da suke a kan jirgin daga buga kewaye waƙoƙi. A wannan yanayin, kada rawar soja ramukan don hawa aka gyara, suna soldered zuwa wažožin. Domin wannan shigarwa masana'antu samar da fadi da kewayon smd-aka gyara: resistors, diodes, capacitors, semiconductor na'urorin. Wadannan abubuwa ne da yawa karami da technologically dace domin sarrafa kansa taron. Amfani smd-gyara iya rage girman lantarki kayayyakin. Surface Dutsen lantarki kusan share duk wasu jinsunan.

Tare da dukan abũbuwan amfãni daga cikin dauke shigarwa yana da wani yawan drawbacks.

1. Buga kewaye hukumar sanya ta wannan fasaha, tsoro da kuma sauran inji buga lodi, kamar yadda wannan smd-lalace aka gyara.
2. Wadannan aka gyara su ne ji tsoro na zafi fiye da kima a lokacin soldering saboda karfi bambance-bambance, da suka iya crack temeratury. Wannan aibi ne wuya a gane, shi yakan auku a lokacin aiki.

Standard nadi smd-resistor

Da farko-smd resistors ne daban-daban masu girma dabam. The karami size - 0402, kadan more - 0603. A mafi Gudun smd-resistor size - 0805, kuma mafi - 1008 a cikin wadannan masu girma dabam 1206, da kuma most - 1812 resistors da sosai kananan size da sosai low iko.

Nadi smd-resistor ta musamman lamba code. Idan resistor size ne 0402, da cewa shi ne mafi karami, shi ba alama. Resistors sauran masu girma dabam bugu da žari bambanta a maras juriya haƙuri: 2, 5, 10%. Duk wadannan resistors alama da 3 lambobi. A farko da na biyu na su nuna wa mantissa, na uku - a multiplier coefficient. Alal misali, code 473 da aka karanta kamar yadda R = 47 ∙ Maris ¹⁰ ohms = 47 ohms.

All resistors, wanda da 1% haƙuri, kuma size kan 0805, alama da hudu lambobi. Kamar yadda a baya harka, da farko Figures nuna mantissa denomination, da factor nuna karshe lambobi. Alal misali, code 1501 tsaye haka: R = 150 ∙ Janairu ¹⁰ = 1500 ohms = 1.5 kOhm. Hakazalika, karanta Sauran code.

A sauki ra'ayi

A daidai nadi a cikin makircinsu na resistors da sauran abubuwa - da saukin bukata na jihar nagartacce a cikin zane na lantarki da kuma lantarki kayayyakin. Tã saukar da dokoki a kan ibãdar resistors, capacitors, inductors da sauran kewaye aka gyara. A cikin zane ya nuna ba kawai resistor ko wasu kewaye da rabi, amma kuma ta maras juriya, da iko, da kuma ga capacitors - da aiki irin ƙarfin lantarki. Kasa shi ne wani misali daga cikin sauki ra'ayi da abubuwa kaddamarda da misali.

Ilimi na duk al'ada hoto tsarin rubutu da karatu na alphanumeric lambobin don abubuwa na makirci zai yi shi da sauki gane manufa da aiki na kewaye. Wannan labarin ya tattauna kawai resistors da kuma kewaye abubuwa da yawa.