Alamar tsayayya ita ce hanya uku

Kowane mutum, wanda aka hannu a gyara na kayan lantarki, san cewa lalle shi ne wani lokacin dole domin sanin m view na resistor ya denomination. Hanyar mafi sauki ita ce auna ma'auni tare da buƙata, amma matsala ita ce, ba sau da yaushe zarafin sauke shi ba tare da lalata hukumar kulawa ba, musamman malayai, kuma wani lokacin akwai shakku game da amincin lambobin sadarwa na ciki. Idan akwai kewaye, duk abu mai sauƙi ne - zaka iya duba shi kuma ka ga cewa R18 shine, misali, 47 Ohm. Kuma idan ba haka ba ne, amma kana bukatar ka kwatanta shi, kuma za a zana zane da kanka?

Abin farin ciki, masana'antun kayan aikin lantarki sun amince da juna, kuma akwai daidaitattun daidaituwa. Gaskiya ne, an sami canje-canje a cikin shekarun da suka wuce.

Mafi yawan lokuta a zamaninmu shine alamar launi na tsayayya. Yana da sauƙin sauƙi, kuma yana karanta lakabi, yana riƙe da mai sauƙi mai kwalliya, yana da wani abu na seconds. Wannan na'urar ne yadu samuwa, akwai a wani rediyo, kuma shi ne sosai cheap, don haka ku tuna launi darajar ba lallai ba ne. Alamar jimillar sun ƙunshi gaskiyar cewa an jure juriya tare da launin launi daban-daban, kowannensu yana nufin digiri, haɓaka ko digiri na daidaituwa.

Dama suna samuwa daga uku zuwa biyar. Karanta su ya kasance daga farkon, wanda yake kusa da ɗaya daga cikin maƙasudin. Alal misali, akwai ƙungiyoyi huɗu. Na farko - launin ruwan kasa, na biyu - baki, na uku - ja, na huɗu - launin toka. Ya kamata ka rubuta wadannan launi a kan mai daukar hoto, ƙugiya ta uku (ya kamata ka zaɓi matsayin "babu"). Anyi, wannan shi ne 1 kΩ tare da kuskure na 0.05%. Idan makaman su uku ne, daidaito shine 20%.

Wani lokaci ya zama wajibi ne don magance tsohuwar ƙwayar Soviet, har yanzu a amfani. Da zarar aka tsawata masa, ya zama kamar mummunan da mummuna, amma lokacin ya nuna muhimmancin wasu samfurori na wannan kayan aiki, kuma yanzu an kira shi "na da". Alamar yunkuri na Soviet ya fi sauƙi fiye da launi, sun rubuta rubutun, alal misali, 4K7 yana nufin 4,700 ohms. Kuma shi ke nan. Kawai kuma a bayyane. Ɗaya daga cikin batu - wannan rubutun na iya fitowa daga ƙasa, ƙananan rediyo na Soviet sunyi amfani da "tsayayyar" tsayayyar tsayayyar jita-jita, Jakadancin suna ƙaunarsa don ajiye sarari a kan jirgi.

Gyara kayan na'urorin lantarki sun sanya masana'antunta kafin a buƙaci ƙirƙira sababbin hanyoyin shigarwa. Tsarin gargajiya na gwagwarmaya ta hanyar ramukan a kan jirgi a cikin matsayi "tsaye" ko "kwance" yana ɗauke da sararin samaniya, kuma yanzu akwai sabuwar hanya ta haɗuwa microboards - smd. A cikin wannan fassarar Ingilishi, kalmomi guda uku sun hada da: "surface" shine surface, "dutse" yana gyara, kuma "fasaha" ya bayyana, wanda ke nufin. Ƙananan sassa an hana su kai tsaye zuwa waƙa a saman, ba tare da ramuka da kafafu ba. Ya ɗauki sabon sa alama na tsayayya, da sauran kayan aiki, irin su diodes da capacitors, kuma.

Sa alama smd resistors ne da ɗan reminiscent na kyau da haihuwa Soviet hanya. Sun kuma buga lambobi da haruffa. Bambanci shine har yanzu. Harafin ba koyaushe ba, idan ya cancanta, "R" ana amfani dashi azaman raba.

Alal misali, 2183 yana nufin cewa 218 yana bukatar a karu da 1000, 218 kΩ an samu. Tabbas da haƙuri da har zuwa 10% ana alama tare da lambobi huɗu, wannan na nufin ƙimar da za a gina ginin goma, da kuma ninka ta sakamakon wannan sakamakon lambar lambobi uku da aka kafa ta cikin lambobi biyu na farko.

Ƙananan wahalar da maƙasudin fasaha mafi kyau, tare da haƙuri na 1%. A nan an ba da lambar ƙwararru ta wata wasika, alal misali, D yana cikin 10 a cikin jaka. Idan juriya ne 10D rubutun, wannan yana nufin 10 kOhm.

Bugu da ƙari, a cikin matakan da aka ba da rubutu, mai gyara zai buƙaci gilashin ƙaramin gilashi, tun da alamomin suna ƙananan!