Resistor: ndichiyani chiyani? Kodi Ine ndikudziwa chimene resistor ndi chofunika?

Polenga madera pakompyuta ntchito zinthu zambiri. Ena mwa ntchito, popanda zomwe kuli kovuta kuchita - izo resistors. Kodi iwo ali? mitundu Kodi pali? Kodi chizindikiro awo yotyani? Ndipo zimene zimaonetsa muli mndandanda ndi kugwirizana yomweyi?

kulimbana ndi chiyani?

Chotero anaitana mchitidwe chabe dera lomwe lili kukana kuti panopa pa madziwo. Mu ziwembu zikuluzikulu ntchito zambiri kuposa chinthu zina zamagetsi. Nkofunika kuonetsetsa transistor kukondera mode pamene ntchito magawo mkuzamawu. Koma ntchito yofunika kwambiri ya ulamuliro akuzindikiridwa ndi lamulo la voteji ndi mafunde m'madera magetsi. Ife akakula taganizirani zimene mitundu awo. Monga mbali ya nkhani idzafotokoza 5 waukulu omwe kwambiri amagwiritsidwa ntchito koma pangakhale ena. Pamene ife kuwerengera resistors, ndiye onetsetsani kuti aone mmene mphamvu chofunika.

Kodi mukufuna kudziwa zimene zimafunika pa nkhani zosiyanasiyana?

Kodi Ine ndikudziwa chimene resistor ndi chofunika polenga ziwembu? Poyamba, ayenera kumvetsa kuti chidziwitso chofunika ndi panopa, kapena mtengo wa kukana katundu. Monga mbali ya njira ziwiri bwanji makhalidwe a Nkhani dera tidzakambirana:

1) Ngati simukudziwa chirichonse, ndiye ife kutenga ndi resistor variable ndi kulumikiza mu mndandanda ndi katundu. Tembenuzani ndi kogwirira kozungulira mpaka nthawi imene ife tiribe voteji zolondola. Tsopano, m'malo kukana variable kulumikiza zonse ndi magawo chofunika. Kuyeza panopa amene akudza pambuyo resistor ndi wachulukitsa phindu chotsatira ndi voteji kuti umagwiritsidwa ntchito. Tikatero, tidzakhala amadziwa kumene ntchito.

2) M'pofunika kudziwa kale mwachindunji kufunika panopa ndi katundu. Kuti ikhale yolondola mawerengedwe, komanso ndi zofunika kudziwa kufunika kulimbikira mkati mwa magetsi.

Tiyeni yesezera ndi zinthu yosiyaniranapo kanthu. Pali resistor ngati katundu, malamulo Ohm, ndipo kufunika kuwerengera kukana chofunika a dera la. Ndi ndithu mfundo yokondweretsa, ndipo iye ayenera tcheru kwa iye. Chifukwa mawu izi anasankhidwa? mfundo ndi yakuti anthu amene ayamba chabe kuchita chilengedwe cha ziwembu, nthawi zambiri anafunsa funso ili. Koma, tsoka, mzera wa kulingalira, amene ali, ndi pang'ono cholakwika. Kuwerengera phindu chofunika ndi lamulo limodzi Ohm a ntchito pano. M'pofunika Komanso ntchito zina resistor mawerengedwe chilinganizo: RRT = CH (NPC-HH) / NN = CH (x-1). Tiyeni tione njira:

RRT - zina resistor kukana;

NPC - kotunga voteji;

CH - katundu kukana;

X = NPC / NN;

Lv - voteji kuti m'pofunika kulandira katundu.

Ife ntchito chilinganizo izi. Kuganiza kuti kukana mu ohms RRT 1 adzakhala 0,6 Ohms. Ngati tiika 5 ohm, zotsatira zake kukhala 3.3 ohms. Chifukwa zonsezi? Ichi ndi chifukwa chakuti Zing'onozing'ono index ndi katundu kukana, lalikulu makhalidwe atsopano a dera la. Izi amawononga ya magetsi, chifukwa izo amalenga kuwasokoneza ena ndi ndime ya panopa. Ndi kupatsidwa kuti izi kuchepa voteji, likukhalira kuti tiyenera mndandanda resistor mbali ang'onoang'ono kutulutsa voteji ankafuna. voteji Izi kwenikweni "pa zala". Zingakhale zovuta kumvetsa zimene ndi momwe, koma inu kuyesa.

amodzi resistor

Chotero anaitana zipangizo zimene zopalira zonse kukana phindu. Mkhalidwe umenewu wa resistor sikusintha mchikakamizo cha zinthu zina (kutentha, otaya panopa, kuwala, ntchito voteji) malire wololera. Ngati ndi choncho afufuze za zinthu zonse nyukiliya tinganene kuti iwo ali ndi phokoso mkati ndi Kusakhazikika chifukwa chikoka chachitatu chipani. Koma kawirikawiri izo zonse kotero zonyozeka kuti zonena ankachita masewera ma wailesi, ndi bwino kokha pamene munakonza machitidwe kwenikweni zovuta, zomwe sizifunika chakuti kwinakwake pompano akupita.

variable resistor

Chotero anaitana zipangizo amene kukana mtengo zikhoza kusintha ntchito cholembera wapadera (kungakhale slider, batani kapena makina mtundu). N'chifukwa chiyani muyenera mtundu wa resistor? Chitsanzo chabwino cha ntchito amafotokozera izi ndi ulamuliro buku okamba kompyuta kapena foni.

monga yomangidwa resistor

Zikutanthauza chipangizo mode opaleshoni yomwe yekha kusintha zina. Kusintha mtengo kukana, m'pofunika kupotoza screwdriver kagawo lomwe lili resistor. Kodi izo? Lonse yogawa iwo analandira pa PCB wa wailesi ngati wogawira panopa kapena voteji.

photoresistor

Awa ndi zipangizo zapadera kuti angasinthe kufunika kwake kukana mchikakamizo cha kuwala. Photoresistors ndi yopangidwa ndi zisulo michenga yopangira zida zamagetsi. Ngati mukufuna kuchita pamaso pa kuwala woonekera ntchito selenide ndi cadmium sulfide. Kulembetsa cheza infuraredi ntchito germanium.

thermistor

zida yapadera imeneyi, imene kuyeza kutentha kwa chilengedwe kunja. thermistor nazonso ntchito ikukhudzana olimba madera kwa magawo transistor. Monga inu kale ndikuganiza, kukana angasinthe mchikakamizo cha kutentha. Mu hatcheries nkhuku, greenhouses, zipangizo mafakitale - kulikonse mungapeze resistor izi. Kodi izo? Kuti pa zina malire kutentha m'gulu Kutentha \ kuzirala.

mphamvu ankakhala moyo wotayirira

Izi mphamvu chosakanikirana ndi resistor kuti aumbike panopa ndi voteji. Chifukwa chakuti kumachitika madyaidya ndikuledzera, osati kupulumutsa, ndi chipangizo imatchedwa chabe. Chifukwa tikhoza kulankhula za resistor monga mchitidwe yogwira, amene mofanana ungagwire ntchito AC madera ndiponso DC mafunde.

Chikhazikitso mphamvu madyaidya ndikuledzera

Kodi mukudziwa kuti mukhoza kupanga resistor lokhazikika? Kuti tichite zimenezi, muyenera kuyang'ana pa chizindikiro chake:

1. Pamene pali mizere iwiri oblique, mphamvu madyaidya ndikuledzera ndi 0,125 Watts.
2. Pali wina mzere oblique - mphamvu madyaidya ndikuledzera ndi wofanana 0,25 Watts.
3. Mmodzi yopingasa mzere - mphamvu madyaidya ndikuledzera wa 0,5 Watts.
4. Mmodzi ofukula mzere - mphamvu madyaidya ndikuledzera 1W.
5. Awiri ofukula mizere - mphamvu madyaidya ndikuledzera 2 Watts.
6. mizere iwiri oblique kuti alenge Latin kalata V, - mphamvu madyaidya ndikuledzera 5 Watts.

Kuyambira Watt limodzi, chifukwa zoti ntchito mawerengero achiroma.

kugwirizana mndandanda

Pamene n'zomveka kuti ntchito njira imeneyi? Ngati mukufuna kupeza kukana, koma pali resistor ndi mtengo wochepa mwadzina, ndiye ntchito mogwirizana siriyo. Kuonanso mmene ndi chimene chikuchitika mu chiwembu cha, m'pofunika n'cigwagwa makhalidwe awo.

kugwirizana kufanana

Ngati kuli kofunikira, njira imeneyi? Apa, kulimbikira okwana resistor ndi wofanana ndi mtengo, ndilo inversely njila kwa izo. Mtengo umenewu amatchedwa "madutsidwe". Mukhale pang'ono zovuta kumvetsa zimene wolemba amatsogolera izo, kotero timapereka tione chilinganizo zotsatirazi (C - fundo):

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

ntchito

Choncho tinaona kuti resistor chonchi chifukwa icho chiri. Photos anaika m'nkhani ino kumvetsa mmene ikuonekera. Koma ife tikufuna khutu ndi ntchito zake. Choncho, resistor. Kodi ndi galimotoyo? Monga mukudziwa, galimoto amagwiritsa kwambiri kuchuluka kwa zamagetsi. Apa ndi kulamulira kugwira ntchito ndi ntchito zake. N'chifukwa chiyani muyenera resistor mbaula galimotoyo? Tinaona mwayi kusintha zoikamo ndi kutentha kulamulira? N'chifukwa chake pali kukana chotenthetsera! Ndipotu popanda zikhoza m'gulu zoikamo yekha Pre-anaika ndi chirichonse. Tsopano, kuganizira chifukwa muyenera resistor kwa anatsogolera? Ndi kuti mungathe kusintha kuwala kwa chowala ake. Mukhoza ndikuganiza, ngati mwawerenga mosamala nkhani, yankho ku funso la mtundu wanji wa resistors ndi zofunika anatsogolera - variable!

Pomaliza

Monga mukuonera, ndi resistor - ndi zofunika ndiponso zothandiza chinthu, amene ali osiyanasiyana ofunsira. Chiphunzitso, mungachite popanda resistor mu dera wosavuta angapo mwatsatanetsatane, ngakhale kuti mphamvu adzakhala molondola kwambiri osankhidwa. Koma izi n'zokayikitsa ndipo kukwaniritsa mfundo Napempha kwa magawo awa nthawi yaitali iwo molawirira. Ndiko wosalira ndondomeko ndi resistors ntchito, chifukwa cholola kusiyana kwambiri ntchito, kutsegula kuthekera ngakhale angapo kusintha awo.