Resistor: ukuba yintoni na? Ndazi njani into kwakufuneka resistor?

Xa ukwenza zobuchwepheshe iqeshe izinto ezininzi. Ezinye lusetyenziswa, ngaphandle apho kuba nzima ukwenza - it resistors. Yintoni na? Ziziphi iintlobo akhona? Yintoni parameter lwabo ibalulekileyo? Yaye ziziphi iinkalo kukho in series uqhagamshelo okunxuseneyo?

Yintoni na ukumelana?

Ngoko wabiza element isixando wesiphaluka, ebonelela ukumelana lwangoku ngexesha flow yayo. Xa schemes ezinkulu zisetyenziswa kaninzi ngaphezu nayiphi na enye into-elektroniki. Kubalulekile ukuqinisekisa ukuba imo icala transistor xa kusetyenziswa ngokwamanqanaba umsindo. Kodwa misebenzi ibaluleke ulawulo eyaziwayo kunye nokulawulwa ombane kunye nemisinga kwiisekethe zombane. Kamva siza kufunda indlela iintlobo zabo. Njengenxalenye nqaku liza kujolisa 5 eziphambili, ezithi zisetyenziswe kakhulu ngokuqhelekileyo, kodwa kusenokubakho abanye. Xa abale resistors, ngoko qiniseka ukuba ukuhlola efunekayo ngayo amandla.

Ingaba ufuna ukuqonda into efunwayo kwityala elithile?

Ndazi njani into kwakufuneka resistor xa ukwenza amacebo? Ekuqaleni, kufuneka kuqondwe ukuba ulwazi olufunekayo na ngoku, okanye ixabiso yenkcaso umthwalo. Njengenxalenye yale ndlela zimbini kuchaphazela iimpawu nqaku yesekethe ziya kuqwalaselwa;

1) Ukuba awuyazi nto, ngoko sithatha i resistor variable senginginya nodibaniso nokuba oko series kunye umthwalo. Jikelezisa iinqanam kude kube mzuzu xa asiyi kuba ombane echanekileyo. Ngoku, kunokuba ukumelana bume ukudibanisa rhoqo kunye parameters ezifunekayo. Ukulinganisa yangoku uza emva resistor Awandise ixabiso iziphumo kunye ombane oluthi lusetyenziswe. Emva koko siya kwazi ukuba kusebenza njani yaye phi.

2) Kuyimfuneko ukwazi elikhankanywe ngaphambili ixabiso zangoku kunye umthwalo. Ukwandisa ngokuchaneka ukubala, kwaye kwakhona enqwenelekayo ukwazi ixabiso uxhathiso lwangaphakathi umbane.

Makhe ukuveza i iimeko ezahlukeneyo kancinane amanyathelo. Kukho resistor nje umthwalo, umthetho Ohm kaThixo, kunye nemfuneko ukubala uxhathiso ofunekayo kumphathi wesekethe. Akuve umdla loo ngongoma, yaye ufanelwe ukuba ihlawulwe ingqalelo kuye. Kutheni le amagama wakhethwa? Inyaniso kukuba abantu kuqala nje ukuba nenxaxheba ekwakhiweni kwezikim, ngokufuthi wabuza lo mbuzo. Kodwa ke, yeha, loo umnombo nokuqiqa kwabo, kancane engalunganga. Bala ixabiso efunekayo nomthetho mnye Ohm kaThixo ayisebenzi apha. Kuyimfuneko ukuba usebenzise Ukongezelela ezongezelelweyo ifomula resistor ubalo lendlela: RRT = CH (NPC-HH) / NN = CH (x-1). Makhe sihlolisise le ifomula:

RRT - ukumelana resistor olongezelelweyo;

NPC - supply ombane;

CH - ukumelana umthwalo;

X = NPC / NN;

LV - ombane ukuba kuyimfuneko ukwamkela umthwalo.

Sisebenzisa le formula. Ukucinga ukuba uxhathiso kwi ohms RRT-1 kuya kuba 0.6 Ohms. Ukuba sibeka i Ohm 5, isiphumo siya kuba 3.3 ohms. Kutheni konke oku? Oku kungenxa yokuba i-ezincinci isalathisi na ukumelana umthwalo, iimpawu ezinkulu yangoku wesekethe. Oku kuya kudlala unikezelo lwamandla, kuba oku kukwadala uphazamiseko ezithile kunye ingxingwa yangoku. Kwaye njengoko oku kuya kwehlisa umbane, kuvela ukuba kufuneka sibe resistor uthotho kunye iimpawu ezincinci ukuvelisa ombane ofunekayo. Le ombane nezwi "kwi iminwe". Kusenokuba nzima ukuqonda oko nendlela, kodwa uzame.

resistor fixed

Ngoko wabiza izixhobo ukuba abanini ixabiso ukumelana rhoqo. Olu phawu resistor ayitshintshi phantsi kweempembelelo iimeko zangaphandle (ubushushu, flow lwangoku, ukukhanya, ombane isicelo) ngaphakathi kwemida efanelekileyo. Ukuba kunjalo ukufumana ngazo zonke izinto radioactive kuthiwe ukuba ingxolo lwangaphakathi kunye nokungazinzi ngenxa impembelelo wesithathu wesithathu. Kodwa ngokuqhelekileyo sele yonke ziyimfeketho ngoyaba bombane radio engahlawulwayo, kwaye iyavakala kuphela xa uyila iinkqubo ezintsonkothileyo ngokwenene, nto leyo nditsho into yokuba kwindawo ethile ngoku khona.

resistor variable

Ngoko wabiza izixhobo ixabiso kabani ukumelana zingatshintshwa kusetyenziswa ipeni ekhethekileyo (kusenokuba nesilayidi, qhosha okanye uhlobo rotary). Kutheni ufuna olu hlobo resistor? Umzekelo omhle ukusetyenziswa lwesi sakhi kukho ulawulo umthamo kwizithethi ikhompyutha okanye iselula.

njengokuba-eyakhelwe resistor

Libhekisela kwisixhobo imo yokusebenza ezakutshintsha manqaphanqapha kuphela. Ukulungisa ixabiso ukumelana, kuyimfuneko ukuba bajije iphazamisane screwdriver, nto leyo iba resistor. Yintoni na ukuba? ukwabiwa Wide abamkelwa phezu PCB yeradio njenge current nomabi okanye ombane.

photoresistor

Ezi zizixhobo ezikhethekileyo ukuba uyakwazi ukutshintsha ixabiso layo ukuxhathisa phantsi kwempembelelo ukukhanya. Photoresistors ezenziwe ngezinto semiconductor. Ukuba ufuna ukuba uyiphendule ubukho yokukhanya ebonakalayo kusetyenziswa selenide kunye isiqalelo esithambileyo esimhlophe, emanzini. Ukuze ubhalise infrared usebenzisa germanium.

thermistor

Le izixhobo ezikhethekileyo, ngazo ukulinganisa iqondo lobushushu bume lwangaphandle. Le thermistor kwakhona asetyenziswe iisekethe uzinziso wobushushu ngoba izigaba transistor. Njengoko u nga sele unokuthekelela, umlo zinokutshintsha phantsi kwempembelelo lobushushu. Ezinala iinkukhu, zokugcina, izixhobo zoshishino - naphi unako ukufumana le resistor. Yintoni na ukuba? Ukuba imida ethile ubushushu ziquka ukufudumeza \ okupholisa.

amandla dissipated

Le amandla sathatha i resistor esenzelwa langoku ombane. Ngenxa yokuba oko kwenzeka wokuzibhubhisa, awongi, kwaye isixhobo kuthiwa kwisixando sokwenziwa. Ngenxa kule singathetha malunga resistor njengento esebenzayo, nto leyo ngokulinganayo unako ukusebenza kwiisekethe AC kunye nemisinga DC.

Isikhundla amandla ukusasaza

Wazi njani engenza ukuba resistor esisigxina? Ukuze wenze oku, kufuneka ujonge kwilebhile yayo:

1. Xa kukho imigca emibini elibhalwe ngokumileyo, amandla ukusasaza ngu 0,125 watts.
2. Kukho omnye umgca elibhalwe ngokumileyo - amandla ukusasaza ilingana 0.25 watts.
3. Omnye umgca oxwesileyo - amandla ukusasaza 0.5 watts.
4. Omnye umgca nkqo - amandla ukusasaza 1w.
5. imigca enqamleze esiqwini ethe - amandla ukusasaza 2 watts.
6. imigca emibini elibhalwe ngokumileyo ukuba ukudala yesiLatini unobumba V, - amandla ukusasaza yi Watts-5.

Iqala ukusuka watt enye, kuba ngokunyula kusetyenziswa Amanani baseRoma.

uqhagamshelo series

Xa iyavakala ukuba ukusebenzisa le ndlela? Ukuba ufuna ukufumana ukumelana kakhulu, kodwa kukho resistor kunye njengezifanelekileyo ephantsi, ngoko usebenzisa udibaniso serial. Kuphonononga indlela kwaye oko kwenziwa kule nkqubo, kuyimfuneko ukuba azihlanganisele iimpawu zabo.

uqhagamshelo ukufana

Apho kuyimfuneko, le ndlela? Apha, uxhathiso elipheleleyo resistor lilingana mali, nto leyo bomzimba umlinganiselo kuyo. Eli xabiso ikwabizwa ngokuba "conductivity". Nibe nzima kancinane ukuqonda ukuba umbhali kukhokelela oko, ukuze sinikele sajonga le fomyula ilandelayo (C - Resistance):

1 / P _iyonke = 1 / P ₁ + 1 / C ₂ + ... + 1 / C _x.

isicelo

Ngoko saqonda ukuba resistor enjalo, kuba yintoni na. Amafoto ezithunyelwe kweli nqaku ukuze aqonde ukuba ikhangeleka njani. Kodwa sifuna ukuba sinikele ingqalelo kwaye usebenzise kwayo. Ngenxa yoko, resistor. Yintoni na emotweni? Njengoko usazi, imoto isebenzisa isixa esikhulu electronic. Nantsi ukulawula ukusebenza kwawo kunye nokusetyenziswa kwayo. Kutheni ufuna isitovu resistor emotweni? Sabona ithuba ukutshintsha izicwangciso lobushushu ulawulo? Kungenxa yoko le nto kukho isifudumezi ukumelana! Ngapha koko, ngaphandle kokuba zingabandakanywa useto kuphela pre-efakiweyo kwaye yonke into. Ngoku, cinga ukuba kutheni ufuna resistor for LED? Ngalo ungakwazi ukulungisa ukugqama kukona yayo. Njengoko unokuthekelela, ukuba ufunda ngenyameko inqaku, impendulo yombuzo oko hlobo resistors efunekayo ukuze LED - variable!

isiphelo

Njengoko ubona, i resistor - yinto efunekayo yaye iluncedo, nto leyo iba uluhlu olubanzi izicelo. Ngethiyori, ungenza ntoni ngaphandle resistor kwisiphaluka elula ezimbalwa iinkcukacha, nangona amandla uya ngokuchanekileyo kakhulu ekhethiweyo. Kodwa akunakwenzeka, yaye ukuze kufikelelwe imilinganiselo ezinqwenelekayo ezi parameters kuya kuba ixesha elide ukukhetha kubo up. Loo nto lula le nkqubo kunye resistors asetyenziswa, kuba ukuvumela umahluko zentsebenzo ebalulekileyo, ovula amathuba noba ezininzi iinguqu zabo.