Resistors njani na uzimisele lokumakisha ezinemibala imivumbo?

Resistor - enye izinto ezisisiseko yesekethe yombane ene-resistor rhoqo okanye umahluko kwaye isebenza ukuguqula lwangoku zombane ibe ombane (okanye ngokuphendululekileyo), ukufunxeka umbane kunye nokwenza eminye imisebenzi emininzi. Le nto nje yinxalenye ebalulekileyo yalo naliphi na isixhobo. Ngoko ke ndiyacinga ukuba i kwezombane onamava okanye nje umthandi elektroniki, uxabisekile kuwe nokumakisha resistors imivumbo umbala kunye nolwabiwo exube ngenxa ukuthelekisa iimpawu amacandelo ahlukeneyo.

Kubekwa resistors kwi imizobo

Ngomhla ingqikelelo kwezixhobo zombane resistor luchazwa nje uxande, apho ibekwe phezu kubanjelelwa Latin alphabet R. Emva phawu inombolo yesiriyeli, awothi element inokufumaneka incazelo. Ugqibezela wesekethe ukonyulwa iseti lwamanani ezibonisa luvukelo wesiqhelo. Ngenxa yoko, umbhalo R12 100 ibiya kuthetha ukuba resistor 12 imiselwe ku ohms 100.

Luphawu ebalulekileyo izinto umthamo wabo. Indiva lo khetho, uzibeka esichengeni umonakalo yonke scheme, nokuba kwinkcazelo resistors zokuphawula lwenziwa ngokuchanekileyo. Nemizobo iya kuchongwa:

• Amanani baseRoma ezisukela-1 ukuya Watts-5;
• strip tyaba kwi ixabiso 0.5 watts;
• omnye okanye emibini imigca elibhalwe ngokumileyo xa ngamandla Watts 0.25 no 0,125 ngokulandelelanayo.

"*" Sign ifakwa emva kokuba inani lothotho inani ezithile resistors. Oku kuthetha ukuba ezi nkcukacha zingentla ayalingana kuphela. Amaxabiso ngqo kuya kufuneka ukuba pick up ngokunokwabo.

isiqu oluza

Exube uphawu izinto yemveliso eSoviet, ngokunjalo ezinye iimveliso-class ehlabathini lokumakishela. resistors zokumakisha amazwe kwaye iimveliso zasekhaya uqale njenge inani kunye isimboli. Kulo mzekelo iiyunithi elityunjelwe ngolu hlobo lulandelayo:

• uphawu "E" okanye «R» uthi kwexabiso elibekiweyo ezivakaliswa ohms;
• unobumba "M" isixelela ukuba ukuziziliza lubonakaliswa megohms;
• uphawu "K" ukuba zincediswe onke amaxabiso lwamanani ichazwe kiloomah.

Ukuba phawu kubonakala emva kokuba amanani, onke amaxabiso zibonakaliswa kwiiyunithi yonke (33E = 33 ohms). Ukuchonga unobumba iqhezu ukuma amanani (K55 = 0,55 kilohms = 550 ohms). Ukuba umqondiso kwizabelo, le resistivity va njengoko amaxabiso apheleleyo kunye inxalenye iqhezu (1M3 = 1.3 megohms).

ihlelo umbala

Ubude ezinye i "ukumelana" na omise nje ezimbalwa. Faka ubone oonobumba neenombolo kwi lwesi sakhi akwenzeki. Kuba uthelekiso kula macandelo isetyenziswa resistors ukumakisha imivumbo bebala. Eentsontelo zombini zokuqala ihlala inoxanduva ihlelo. Abanye kwiziqwengana zebhanki bunenjongo:

• kulo mshini 3- okanye 4-kwendlela dash lwesithathu uchaza ezininzi, yaye owesine - ukuchana;
• 5 ndlela-Amagama umbala yesithathu ibonisa ihlelo, owesine - lingabali, kwaye sesihlanu - nezichanekileyo;
• lane lesithandathu ibonisa ukuba iqondo lobushushu ukungavumelani kwe ukuxhathisa a ukuthembeka iseli okanye, ukuba liyajiya abanye.

bar Umbala kubonisa amaxabiso lwamanani ubuwasekele yona. Ukujongana nale table iya kunceda resistors zokuphawula apho umthunzi ngamnye ingqinelana ukuba into ethile, okanye umfanekiso. Ngokomzekelo, siye sibe resistor kunye ngemivumbo ebomvu, eluhlaza, amfusa, oluhlaza. Izakhi intsingiselo, siyazi ukuba sijongene resistor ka 25 ohms * 10 = 250 ohms ngokuchaneka-25%.

imicu ulandelelwano

Indlela ukumisela ukuba ngowuphi icala ukuqalisa kulungiswa? Emva zokuphawula resistors imivumbo bebala nga decoded kumacala omabini. Ukuthintela ukubhidana kwezinto kulo, kuyimfuneko ukuba ukukhumbula eminye imithetho elula:

1. Ukuba kukho bathathu kuphela bands, owokuqala uya kusoloko zibekwe kufutshane elunxwemeni ngaphezu wokugqibela.
2. Le ndlela-4 imiba indlela yokufunda kufuneka imiselwe isilivere okanye umbala segolide - baya kusoloko kufuneka zibekwe kufutshane ekupheleni.
3. Kwezinye iimeko, kufuneka zifundwe ukuze afumane ixabiso thotho engephi. Ukuba akunjalo, kuyimfuneko ukuba izakhi kwelinye icala.

Ityala eyahlukileyo i indawo umtsibeli emnyama emzimbeni. Oku kuthetha ukuba ilungu akukho bokuxhathisa kwaye isetyenziswa umtsibeli. Ngoku uyazi ukuba ufunde indlela resistors ukumakisha anemibala imivumbo, kunye neengxaki kwenkcazo element ngegama akuyi kuba.