Chichatara resistors - vari huru nzira nhatu

Ani rinobatanidzwa kugadziriswa zvigadzirwa midziyo, ziva kuti dzimwe nguva zvakakodzera kuona rokunze maonero resistor kuti sangano rake. Nyore nzira kuyera nemishonga ane ohmmeter, asi dambudziko hazvibviri nguva dzose kuti unsolder nayo pasina kukuvadza majana puranga, kunyanya ane multi-layered, asi zvinoitika kuti pane chokwadi kuvimbika dzomukati vokukurukura. Kana uine dunhu, zviri nyore - unogona kutarira mariri uye ona kuti R18 Somuenzaniso, 47 ohms. Uye kana harungaregi, uye unofanira kunzwisisa, uye vanoronga chichatibatsira kuswedera?

Sezvineiwo, vagadziri zvigadzirwa zvinoriumba vanobvumirana mumwe, uye pane mwero chokuguma resistors. Chokwadi, kuchinja mumakumi emakore achangopfuura.

Rakajairika munguva yedu iri ruvara-coded resistors. Zviri nyore chaizvo, uye kuverenga sangano, vakabata nyore makadhibhokisi decoder pfupi chinhu. mudziyo Izvi nevakawanda kuwanika, pane chero redhiyo, uye husingakoshi chaizvo, saka yeuka ruvara mutengo hakusi zvakakodzera. Chichatara resistors ndechokuti kurwisa akashandisa pendi zvindori mavara akasiyana, chimwe nechimwe kunoratidza nhamba, mumwe multiplier kana zvakarurama.

Rinoparadza iripo kubvira matatu shanu. Verenga kuti ave wokutanga, pedyo mumwe mhedziso. Somuenzaniso, rinoparadza mana. First - mashava, vamwe - black, wechitatu - red, wechina - pfumbu. Zvakakodzera dhayira ari decoder mavara aya, kushayikwa retatu (panofanira kusarudza nzvimbo "kwete"). Achaipedzisawo ane kururama 1 KW 0, 05%. Kana mapoka matatu, kururama ndiko 20%.

Dzimwe nguva pane kudiwa kubata tsaru Soviet ano, izvo zvichiri kushandiswa. Kamwe akanga vakavatsiura, airatidzika zveufende uye dzakashata, asi nguva zvaakakuratidza zvinoshamisa kushinga vamwe mimwe midziyo iyi, uye iye zvino kunyange dzimwe nguva anonzi "mazambiringa." Chichatara Soviet akagadzirwa resistors kunyange nyore ruvara, vari kungoita zvakanyorwa nesangano Somuenzaniso, 4K7 zvinoreva 4700 ohms. Ndizvo zvose. Simply uye zvakajeka. Imwe drawback - Mashoko emhosva chingava pasi, Soviet RADIOZAVOD kashoma kushandiswa "kumira-up" paungano nemishonga, anodiwa vokuJapan kuponesa bhodhi nzvimbo.

The miniaturization zvigadzirwa michina vagadziri uchiise pamberi kudiwa kugadzira nzira itsva naro. Classical pokunamatidza resistors kuburikidza mumakomba ari bhodhi iri "yakamira" kana "akarara pasi" nzvimbo kunotora nzvimbo yakawandisa, uye ichi ndicho nzira itsva vaungana mumwe microplate - smd. In ichi Chirungu Acronym - encrypted zvitatu mashoko: «pamusoro» - pose, «pagomo» - chokugadza «rwokugadzira» - zviri pachena kuti zvinoreva. zvikamu zviduku zviri soldered zvakananga njanji pamusoro, pasina mumakomba, uye makumbo. Zvakatora mutsva Kunyora resistors, uye nezvimwe zvinoriumba, dzakadai diodes uye capacitors pamwe.

Chichatara smd resistors Apa nowenyika yakanaka nzira yekare Soviet. Naivo akadhindwa nhamba uye tsamba. Musiyano uchiripo. Tsamba asipo, kana zvakakodzera nguva dzose, «R» rinoshandiswa sezvo panoparadzana pfungwa.

Somuenzaniso, 2183 zvinoreva kuti 218 inofanira kane 1000, kwaanoda 218 ohms. Nemishonga, aine achishivirira anosvika 10% anozivikanwa ne digits mana, yokupedzisira rinoreva papi kuvaka gumi uye kane mugumisiro-digit matatu nhamba inoumbwa ne digits maviri okutanga.

Zvishoma zvokuvapfuura smd resistors pamwe dzakakwirira yepamusoro kirasi, aine kubvumirawo zvimwe 1%. Pano dhigirii wezviuru seti tsamba Somuenzaniso, D - 10 ndiye cubed. Kana resistor rakanyorwa 10D, ndiyo 10 ohms.

Kuwedzera kune musangano matafura, kuti mukoti anofanira rinokudza regirazi, sezvo vatambi vari chaizvo duku!