Yuav Ua Li Cas Thiaj Li Ua Ntej Voltage Divider Circuit: 9 Kauj Ruam (nrog Duab)

Cov txheej txheem:

Yuav Ua Li Cas Thiaj Li Ua Ntej Voltage Divider Circuit: 9 Kauj Ruam (nrog Duab)
Yuav Ua Li Cas Thiaj Li Ua Ntej Voltage Divider Circuit: 9 Kauj Ruam (nrog Duab)
Anonim

Thaum ua cov khoom siv hluav taws xob, xws li kev tswj chaw taws teeb, koj yuav xav tau siv lub zog hluav taws xob me dua li qhov koj tuaj yeem nrhiav tau tawm ntawm lub txee. Ntau yam khoom siv hluav taws xob yooj yim tsuas tuaj yeem tiv taus 5V, txawm hais tias ib qho ntawm cov khoom siv hluav taws xob feem ntau rau hom kev siv hluav taws xob no yog tus qauv 9V roj teeb. Kab lus no yuav qhia koj txoj hauv kev yooj yim tig lub roj teeb 9V rau hauv 3V qhov chaw rau koj lub xov tooj hluav taws xob yog tias nws tsis kos ntau tam sim no.

Cov kauj ruam

Ua qhov Voltage Divider Circuit Kauj Ruam 1
Ua qhov Voltage Divider Circuit Kauj Ruam 1

Kauj Ruam 1. Txuas ib tus coj ntawm 20-ohm resistor rau qhov nthuav tawm ntawm cov hmoov lead liab ntawm 9V roj teeb snap-on txuas siv tus nab npawb txuas

Ua qhov Voltage Divider Circuit Kauj Ruam 2
Ua qhov Voltage Divider Circuit Kauj Ruam 2

Kauj Ruam 2. Rov Ua Kauj Ruam 1 txhawm rau txuas cov hlau lead dub ntawm qhov txuas txuas rau ib qho ntawm 10-ohm resistor

Ua qhov Voltage Divider Circuit Kauj Ruam 3
Ua qhov Voltage Divider Circuit Kauj Ruam 3

Kauj Ruam 3. Twist ua ke qhov kawg pub dawb ntawm txhua tus tiv thaiv

Qhov no yuav yog txoj hauv kev yooj yim tshaj plaws kom ntseeg tau tias muaj kev sib txuas ruaj khov ntawm cov neeg tiv thaiv.

Ua qhov Voltage Divider Circuit Kauj Ruam 4
Ua qhov Voltage Divider Circuit Kauj Ruam 4

Kauj Ruam 4. Clamp tus nab npawb kawg clamp hla txoj kab sib tw ntawm tus tiv thaiv kom ntseeg tau tias lawv nyob hauv qhov chaw

Ua qhov Voltage Divider Circuit Step 5
Ua qhov Voltage Divider Circuit Step 5

Kauj Ruam 5. Txuas lub snap-on txuas rau lub roj teeb 9V kom xaim liab txuas nrog lub dav hlau zoo (+) thiab cov xaim dub txuas nrog rau qhov tsis zoo (-) dav hlau

Ua qhov Voltage Divider Circuit Kauj Ruam 6
Ua qhov Voltage Divider Circuit Kauj Ruam 6

Kauj Ruam 6. Tuav qhov tsis zoo (xim dub) ntawm lub voltmeter tiv thaiv tus kais dej kov kov qhov tsis zoo (dub) txhuas ntawm qhov txuas txuas

Ua qhov Voltage Divider Circuit Step 7
Ua qhov Voltage Divider Circuit Step 7

Kauj Ruam 7. Tuav qhov ua tau zoo (liab) ntawm lub voltmeter tawm tsam tus kais dej tuav tuav qhov sib tw resistor coj ua qhov chaw

Ua Ib Qhov Voltage Divider Circuit Kauj Ruam 8
Ua Ib Qhov Voltage Divider Circuit Kauj Ruam 8

Kauj Ruam 8. Qhib lub voltmeter

Lub vijtsam yuav tsum nyeem 3V.

Ua qhov Voltage Divider Circuit Kauj Ruam 9
Ua qhov Voltage Divider Circuit Kauj Ruam 9

Kauj Ruam 9. Siv qhov kev sib txuas uas qhov twisted resistor lead nyob hauv raws li qhov hluav taws xob qhov hluav taws xob zoo rau koj qhov Circuit Court

Lub davhlau ya nyob twg tsis zoo ntawm lub roj teeb tseem yuav yog koj qhov tsis zoo rau hauv Circuit Court. Tam sim no koj muaj qhov faib hluav taws xob rau koj li 9V roj teeb.

Lub tswv yim

  • Koj kuj yuav tsum coj mus rau hauv tus account ib qho kev thauj khoom sab nrauv sab nraud tuaj yeem muaj ntawm qhov faib.
  • Ceev faj.
  • Raws li koj ua haujlwm nrog ntau hom kev siv hluav taws xob xav tau kev faib hluav taws xob, cov phiaj xwm rau sab xis tuaj yeem pab koj txhim kho cov hluav taws xob sib txawv rau daim ntawv thov no. Qhov sib npaug

    Vout = Vin * (R2 / (R2 + R1))

    yog kab zauv piav qhia yuav ua li cas qhov hluav taws xob tso tawm cuam tshuam nrog rau qhov hluav taws xob nkag hauv hom kev siv hluav taws xob no. Vin tau sau ua 9V hauv qhov sib npaug no rau 9V roj teeb.

  • Cov faib faib qhia qhov chaw tso dej loj ntawm lub roj teeb. Los ntawm Ohm txoj cai peb muaj: (9 volts) / (20+10) ohms = 0.3 amps. Koj lub roj teeb yuav tsis nyob ntev nrog cov resistors no txuas. Tsis tas li, 20 ohm resistor yuav tawg 1.8 watts, yog li siv tsawg kawg 3 watt zog tiv thaiv rau nws.
  • Qhov kev xaiv zoo dua ntawm cov neeg tawm tsam yuav yog qhov sib piv tab sis muaj txiaj ntsig zoo dua, zoo li 200 ohms thiab 100 ohms, tab sis tom qab ntawd yuav muaj kev thauj khoom ntau dua (txo qis qhov hluav taws xob) los ntawm koj lub cuab yeej. Qhov kev xaiv zoo tshaj yuav yog yuav lub roj teeb me me tso cai rau ob lub roj teeb 1.5V tso rau hauv kab, tsim tawm txog 3V yam tsis muaj kev faib khoom tsim nyog thiab tsis muaj thauj khoom (thiab lub roj teeb ntev dua).
  • Hom kev siv hluav taws xob no tuaj yeem tsim tau yooj yim ntawm tus qauv txheej txheem qauv, tab sis clamping cov khoom sib xyaw ua ke yog txaus rau kev sib dhos nrawm nrawm nrawm.

Lus ceeb toom

  • Nco ntsoov tshem tawm ib qho kawg ntawm qhov faib hluav taws xob (lossis tshem lub roj teeb) thaum tsis siv los tiv thaiv koj lub roj teeb los ntawm kev nqus dej.
  • Cov txiaj ntsig tau xaiv ntawm no pov tseg ntau lub zog. Cov resistors tsim tag nrho V2R = 9 hli2/30 = 2.7 watts, yog li lawv tuaj yeem kub heev. Koj lub roj teeb hluav taws xob tuaj yeem poob qis dua 9 volts vim lub nra hnyav txawm tias tsis muaj ib lub cuab yeej txuas nrog rau koj qhov faib hluav taws xob.
  • Koj yuav tsum nco ntsoov siv kev ceev faj thaum ua haujlwm nrog cov khoom siv hluav taws xob uas ntsaws rau hauv lub qhov hluav taws xob kom txo qhov kev pheej hmoo ntawm hluav taws xob. Txawm li cas los xij, tsis muaj kev phom sij ntau ntawm hluav taws xob los ntawm lub roj teeb 9V.

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