Izifunda ze-Resistors - izinkinga nezixazululo

Amasekethe e-Resistors - izinkinga nezixazululo

1. Yisiphi isifunda sama -resistor , njengoba kuboniswe esithombeni esingezansi, esinokumelana okukhulu.

Amasekethe e-Resistors - izinkinga nezixazululo 1

Impendulo A

R ₁ = 2 Ω, R ₂ = 2 Ω, R ₃ = 6 Ω, R ₄ = 6 Ω

I-R ₃ kanye ne-R ₄ zixhunywe ngokulingana. I-resistor efanayo:

1/R ₃₄ = 1/R ₃ + 1/R ₄ = 1/6 + 1/6 = 2/6

R ₃₄ = 6/2 = 3 Ω

I-R1 _, i-R2 _kanye ne- _R34 zixhunywe ngochungechunge. I-resistor efanayo:

R = R ₁ + R ₂ + R ₃₄ = 2 Ω + 2 Ω + 3 Ω

R = 7Ω

Phendula B

R ₁ = 2 Ω, R ₂ = 4 Ω, R ₃ = 4 Ω, R ₄ = 8 Ω

I-R2 _kanye ne- _R3 zixhunywe ngochungechunge. I-resistor efanayo:

R ₂₃ = R ₂ + R ₃ = 4 Ω + 4 Ω = 8 Ω

I-R ₂₃ kanye ne-R ₄ zixhunywe ngokulingana. I-resistor efanayo:

1/R ₂₃₄ = 1/R ₂₃ + 1/R ₄ = 1/8 + 1/8 = 2/8

R ₂₃₄ = 8/2 = 4 Ω

I-R1 _kanye ne- _R234 zixhunywe ngochungechunge. I-resistor efanayo:

R = R1 ₊ R234 ₌ 2 Ω + 4 Ω

R = 6 Ω

Impendulo C

R ₁ = 9 Ω, R ₂ = 9 Ω, R ₃ = 9 Ω, R ₄ = 2 Ω

I-R1 _, i-R2 _kanye ne-R3 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₁₂₃ = 1/R ₁ + 1/R ₂ + 1/R ₃ = 1/9 + 1/9 + 1/9 = 3/9

R ₁₂₃ = 9/3 = 3 Ω

I-R123 _kanye ne- _R4 zixhunywe ngochungechunge. I-resistor efanayo:

R = R ₁₂₃ + R ₄ = 3 Ω + 2 Ω

R = 5 Ω

Impendulo D

R ₁ = 5 Ω, R ₂ = 10 Ω, R ₃ = 2 Ω, R ₄ = 2 Ω

I-R1 _ne -R2 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₁₂ = 1/R ₁ + 1/R ₂ = 1/5 + 1/10 = 2/10 + 1/10

1/R ₁₂ = 3/10

R ₁₂ = 10/3 Ω

I-R3 _ne -R4 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₃₄ = 1/R ₃ + 1/R ₄ = 1/2 + 1/2 = 2/2

R ₃₄ = 1 Ω

I-R ₁₂ kanye ne-R ₃₄ zixhunywe ngochungechunge. I-resistor efanayo:

R = R ₁₂ + R ₃₄ = 10/3 + 3/3 = 13/3

R = 4.3 Ω

2. Iyini i-resistor elinganayo kwisekethe njengoba kuboniswe esithombeni esingezansi.

Isixazululo: Amasekethe e-Resistors - izinkinga nezixazululo 2

Ama-resistor angu-6 Ω, 3 Ω kanye no-2 Ω axhunywe ngokulingana. I-resistor efanayo:

1/R _P = 1/6 + 1/3 + 1/2 = 1/6 + 2/6 + 3/6 = 6/6

R _P = 6/6 = 1 Ω

Ama-resistor angu-7 Ω, 8 Ω kanye no-1 Ω axhunyiwe ngochungechunge. I-resistor efanayo:

R = 7 + 8 + 1 = 16 Ω

3. Iyini i-resistor elinganayo kwisekethe njengoba kuboniswe esithombeni esingezansi.

Kwaziwa:

Isivikelo 1 (R)₁) = 2 Ohms Amasekethe e-Resistors - izinkinga nezixazululo 3

Isivikelo 2 (R2 ₎ = 2 Ohm

Isivikelo 3 (R3 ₎ = 2 Ohm

Isivikelo 4 (R4 ₎ = 2 Ohm

Okufunwayo: I-resistor efanayo

Isixazululo:

I-Resistor R2 _kanye ne-resistor R3 _zixhunywe ngokulingana. I-resistor efanayo

1/R ₂₃ = 1/R ₂ + 1/R ₃

1/R ₂₃ = 1/2 + 1/2 = 2/2

R ₂₃ = 1 Ohm

I-Resistor R1 _, i-resistor R23 _kanye ne-resistor R3 _zixhunywe ngochungechunge. I-resistor efanayo:

R = R1 ₊ R2 ₊ R3 ₌ 2 + 1 + 2

R = 5 Ohm

Uyini umsebenzi oyinhloko we-resistor kusekethe kagesi?
- Impendulo: Umsebenzi oyinhloko we-resistor ukukhawulela noma ukulawula ukugeleza kwamandla kagesi kusekethe. Yethula ukumelana nokugeleza kwama-electron, okungaba usizo ekulawuleni ukuziphatha kwesekethe noma ekuvikeleni izingxenye.
Ukuhlelwa kwe-resistor yochungechunge kanye ne-parallel kuhluka kanjani ngokwemigomo yokumelana okuphelele?
- Impendulo: Ekucushweni kochungechunge, ukumelana okuphelele $R_{t o t a l}$ yisamba sokumelana komuntu ngamunye: $R_{t o t a l} = R_{1} + R_{2} + ...$ . Ekulungiselelweni okuhambisanayo, ukuphambuka kokumelana okuphelele kuyisamba sokuphambuka kokumelana ngakunye: 1/ $R ^{t o t a l} =1/ R ^{1} +1/ R ^{2} + ...$ .
Kungani umuntu angakhetha ukuxhuma ama-resistor ngendlela efanayo kunokuba axhumane ngochungechunge?
- Impendulo: Ukuxhuma ama-resistor ngesikhathi esifanayo kunganciphisa ukumelana okuphelele kwesekethe, okungenzeka kwandise ukugeleza kwamanje okuphelele. Kungaphinde kuhlinzeke ngokuphindaphindeka—uma i-resistor eyodwa yehluleka, isekethe isengasebenza nezinye ama-resistor ahambisanayo.
Isilinganiso samandla se-resistor sihlobene kanjani nokusetshenziswa kwaso kusekethe?
- Impendulo: Isilinganiso samandla sibonisa inani eliphezulu lamandla i-resistor engawachitha njengokushisa ngaphandle kokulimala. Uma i-resistor esesekethe ichitha amandla angaphezu kwesilinganiso sayo, ingashisa kakhulu futhi yehluleke.
Kungani amanye amasekethe esebenzisa ama-resistors aguquguqukayo?
- Impendulo: Ama-resistors aguquguqukayo, njenge-potentiometers noma ama-rheostats, avumela ukumelana okulungisekayo kwisekethe. Lokhu kungaba usizo ekulungiseni noma ekulungiseni amapharamitha esekethe, njengevolumu kumadivayisi omsindo noma ukukhanya kokukhanya.
Kwenzekani uma i-resistor esesigcemeni sochungechunge ihluleka (ivuleka)?
- Impendulo: Uma i-resistor ku-series series yehluleka ngokuba yi-open circuit, yonke i-circuit izovuleka, futhi akukho current ezogeleza kuyo. Kufana nokuba ne-break empayipini wamanzi.
Kwenzekani uma i-resistor esesikethini esihambisanayo yehluleka (ivuleka)?
- Impendulo: Uma i-resistor esesekethe ehambisanayo yehluleka ngokuba yisekethe evulekile, amanye amagatsha ahambisanayo azoqhubeka nokuthwala ugesi. Ukumelana okuphelele kwesekethe kuzokwanda njengoba enye yezindlela ezihambisanayo isusiwe.
Kungani amanye amasekethe esebenzisa ama-resistor anenani eliphezulu kakhulu lokumelana, ngezinye izikhathi ngokulandelana kwama-megaohms?
- Impendulo: Amanani okumelana aphezulu angasetshenziswa ngezinhloso ezahlukahlukene, njengokudala abahlukanisi bamandla kagesi, ama-transistors ahlukanisayo, noma ukusebenza ngezinhlelo zokusebenza zamandla aphansi kakhulu. Angaqinisekisa ukugeleza kwamandla kagesi okuncane ezingxenyeni ezithile zamasekethe, ikakhulukazi lapho kudingeka khona ukuzwela noma ukunemba.
Izinga lokushisa lithinta kanjani ukumelana kwama-resistor amaningi?
- Impendulo: Kwezinto eziningi, ukumelana kuyanda ngokushisa. Inani lokushintsha kokumelana ngokushisa linqunywa yi-coefficient yokumelana nokushisa kwezinto. Amanye ama-resistor aklanyelwe ngqo ukuba noshintsho oluncane ngokumelana nokushisa (lawa abizwa ngokuthi ama-resistor azinzile ngokushisa noma ama-resistor aphansi ngokushisa).
Kungani kusetshenziswa ama-resistors okudonsa phezulu kanye nokudonsa phansi kumasekethe edijithali?

Impendulo: Ama-resistors okudonsa phezulu nokudonsa phansi asetshenziswa ukuchaza isimo esizenzakalelayo (esingasebenzi) sephini yokufaka yedijithali. I-resistor yokudonsa phezulu ixhuma iphini yokufaka ku-voltage enhle uma kungekho signali esebenzayo esetshenziswayo, okuqinisekisa isimo esizenzakalelayo se-HIGH. Ngokuphambene nalokho, i-resistor yokudonsa phansi ixhuma iphini yokufaka phansi, okuqinisekisa isimo esizenzakalelayo se-LOW.