Cov voj voog resistors - teeb meem thiab kev daws teeb meem

1. Cov resistor circuits twg , raws li pom hauv daim duab hauv qab no, muaj qhov tsis kam loj dua.

Cov voj voog resistors - teeb meem thiab kev daws teeb meem 1

Teb A

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

R ₃ thiab R ₄ txuas ua ke. Lub resistor sib npaug:

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

R ₃₄ = 6/2 = 3 Ω

R _1, R ₂ thiab R ₃₄ txuas ua ke. Lub resistor sib npaug:

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

R = 7 Ω

Teb B

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

R ₂ thiab R ₃ txuas ua ke. Lub resistor sib npaug:

R ₂₃ = R ₂ + R ₃ = 4 Ω + 4 Ω = 8 Ω

R ₂₃ thiab R ₄ txuas ua ke. Lub resistor sib npaug:

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

R ₂₃₄ = 8/2 = 4 Ω

R ₁ thiab R ₂₃₄ txuas ua ke. Lub resistor sib npaug:

R = R ₁ + R ₂₃₄ = 2 Ω + 4 Ω

R = 6 Ω

Teb C

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

R _1, R ₂ thiab R ₃ txuas ua ke. Lub resistor sib npaug:

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

R ₁₂₃ thiab R ₄ txuas ua ke. Lub resistor sib npaug:

R = R ₁₂₃ + R ₄ = 3 Ω + 2 Ω

R = 5 Ω

Teb D

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

R ₁ thiab R ₂ txuas nrog ua ke. Lub resistor sib npaug:

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

R ₃ thiab R ₄ txuas nrog ua ke. Lub resistor sib npaug:

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

R ₃₄ = 1 Ω

R ₁₂ thiab R ₃₄ txuas ua ke. Lub resistor sib npaug:

R = R ₁₂ + R ₃₄ = 10/3 + 3/3 = 13/3

R = 4.3 Ω

2. Tus resistor sib npaug hauv lub voj voog raws li qhia hauv daim duab hauv qab no yog dab tsi.

Tshuaj: Cov voj voog resistors - teeb meem thiab kev daws teeb meem 2

Cov resistors 6 Ω, 3 Ω thiab 2 Ω txuas ua ke. Cov resistor sib npaug:

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

R _P = 6/6 = 1 Ω

Cov resistors 7 Ω, 8 Ω thiab 1 Ω txuas ua ke. Cov resistor sib npaug:

R = 7 + 8 + 1 = 16 Ω

3. Tus resistor sib npaug hauv lub voj voog raws li qhia hauv daim duab hauv qab no yog dab tsi.

Paub:

Tus Resistor 1 (R)₁) = 2 Ohms Cov voj voog resistors - teeb meem thiab kev daws teeb meem 3

Tus Resistor 2 (R2 ₎ = 2 Ohm

Tus Resistor 3 (R3 ₎ = 2 Ohm

Tus Resistor 4 (R4 ₎ = 2 Ohm

Yav dhau los: Resistor sib npaug

Tshuaj:

Resistor R ₂ thiab resistor R ₃ txuas ua ke. Lub resistor sib npaug

1/R ₂₃ = 1/R ₂ + 1/R ₃

1/R ₂₃ = 1/2 + 1/2 = 2/2

R ₂₃ = 1 Ohm

Resistor R ₁ , resistor R ₂₃ thiab resistor R ₃ txuas ua ke. Lub resistor sib npaug:

R = R ₁ + R ₂ + R ₃ = 2 + 1 + 2

R = 5 Ohm

Lub luag haujlwm tseem ceeb ntawm lub resistor hauv lub voj voog hluav taws xob yog dab tsi?
- tebLub luag haujlwm tseem ceeb ntawm lub resistor yog txwv lossis tswj qhov ntws ntawm cov hluav taws xob hauv lub voj voog. Nws ua rau muaj kev tiv thaiv rau qhov ntws ntawm cov electrons, uas tuaj yeem pab tau rau kev tswj tus cwj pwm ntawm lub voj voog lossis tiv thaiv cov khoom.
Cov qauv resistor series thiab parallel sib txawv li cas hauv cov nqe lus ntawm tag nrho cov tsis kam?
- teb: Hauv kev teeb tsa series, tag nrho cov tsis kam $R_{t o t a l}$ yog qhov sib sau ua ke ntawm cov kev tiv thaiv ib leeg: $R_{t o t a l} = R_{1} + R_{2} + ...$ Hauv kev teeb tsa sib luag, qhov rov qab ntawm tag nrho cov kev tiv thaiv yog qhov sib sau ua ke ntawm cov kev rov qab ntawm cov kev tiv thaiv ib leeg: 1/ $R ^{t o t a l} =1/ R ^{1} +1/ R ^{2} + ...$ .
Vim li cas ib tug neeg thiaj xaiv txuas cov resistors ua ke es tsis yog ua ke?
- tebKev txuas cov resistors ua ke tuaj yeem txo qhov tsis kam ntawm lub voj voog tag nrho, ua rau kom cov tam sim no ntws ntau dua. Nws kuj tseem tuaj yeem muab qhov rov ua dua - yog tias ib qho resistor tsis ua haujlwm, lub voj voog tseem tuaj yeem ua haujlwm nrog lwm cov resistors sib luag.
Lub zog ntsuas ntawm lub resistor cuam tshuam li cas rau nws siv hauv Circuit Court?
- tebQhov ntsuas fais fab qhia txog qhov siab tshaj plaws ntawm lub zog uas lub resistor tuaj yeem yaj tawm ua cua sov yam tsis raug puas tsuaj. Yog tias lub resistor hauv lub voj voog yaj tawm lub zog dhau nws qhov ntsuas, nws tuaj yeem kub dhau thiab ua tsis tiav.
Vim li cas qee lub circuits siv cov resistors hloov pauv tau?
- tebCov resistors hloov pauv tau, xws li potentiometers lossis rheostats, tso cai rau kev hloov kho qhov tsis kam hauv lub voj voog. Qhov no tuaj yeem pab tau rau kev kho lossis kho cov kev teeb tsa ntawm lub voj voog, xws li qhov ntim hauv cov khoom siv suab lossis qhov ci ntawm lub teeb.
Yuav ua li cas yog tias lub resistor hauv lub voj voog series tsis ua haujlwm (qhib)?
- tebYog tias lub resistor hauv ib lub series circuit tsis ua haujlwm los ntawm kev ua ib lub circuit qhib, tag nrho lub circuit yuav qhib, thiab tsis muaj tam sim no yuav ntws los ntawm nws. Nws zoo li muaj kev tawg hauv cov kav dej.
Yuav ua li cas yog tias lub resistor hauv lub voj voog sib luag tsis ua haujlwm (qhib)?
- tebYog tias ib lub resistor hauv lub voj voog sib luag tsis ua haujlwm los ntawm kev ua ib lub voj voog qhib, cov ceg sib luag seem tseem yuav nqa tam sim no. Tag nrho qhov tsis kam ntawm lub voj voog yuav nce ntxiv txij li ib txoj kev sib luag tau raug tshem tawm.
Vim li cas qee lub voj voog siv cov resistors nrog cov nqi tiv taus siab heev, qee zaum nyob rau hauv qhov kev txiav txim ntawm megaohms?
- tebCov nqi tiv taus siab tuaj yeem siv rau ntau lub hom phiaj, xws li tsim cov khoom faib hluav taws xob, biasing transistors, lossis ua haujlwm nrog cov ntawv thov tam sim no qis heev. Lawv tuaj yeem ua kom muaj qhov tsawg kawg nkaus tam sim no ntws hauv qee qhov ntawm cov voj voog, tshwj xeeb tshaj yog qhov xav tau kev nkag siab lossis kev ua kom raug.
Qhov kub thiab txias cuam tshuam li cas rau qhov tsis kam ntawm feem ntau cov resistors?
- tebRau ntau yam khoom siv, kev tiv taus nce nrog qhov kub thiab txias. Qhov ntau npaum li cas uas kev tiv taus hloov nrog qhov kub thiab txias yog txiav txim siab los ntawm cov khoom siv qhov kub thiab txias ntawm kev tiv taus. Qee cov resistors tau tsim tshwj xeeb kom muaj kev hloov pauv tsawg kawg nkaus hauv kev tiv taus nrog qhov kub thiab txias (cov no hu ua kub-ruaj khov lossis qis temp-co resistors).
Vim li cas cov resistors rub-up thiab rub-down siv rau hauv cov voj voog digital?

tebCov resistors rub-up thiab rub-down yog siv los txhais lub xeev tsis ua haujlwm ntawm tus pin digital input. Lub resistor rub-up txuas tus pin input rau lub zog zoo thaum tsis muaj lub teeb liab nquag, ua kom lub xeev HIGH. Ntawm qhov tod tes, lub resistor rub-down txuas tus pin input rau hauv av, ua kom lub xeev LOW.