Ib qho kev sib txuas yog ib qho kev sib txuas uas cov ntsiab lus txuas ntawm ib qho kawg nkaus xwb. Cov kab ke yog tus yam ntxwv los ntawm qhov tseeb tias nws tsis suav nrog txhua ceg.
Ib qho kev sib txuas sib txawv ntawm qhov sib txuas sib txuas hauv qhov kev sib txuas yog ua nyob rau hauv parallel, uas yuav tsum muaj tsawg kawg yog ob lub nodes.
Resistors yog cov khoom siv dag zog. Lawv yog siv nyob rau hauv electronics raws li ib tug ntxiv load los txo qhov tam sim no los yog voltage ntawm lub Circuit Court. Nws ua li cas?
Yog tias tsim nyog los txo qhov tam sim no, cov resistors txuas nrog hauv cov koob. Hauv qhov no, qhov tam sim no ntawm txhua qhov kev tawm tsam yog tib yam, tab sis qhov sib txawv muaj peev xwm sib txawv. Nws yuav tsum raug sau tseg tias qhov sib txawv muaj peev xwm yog qhov loj ntawm qhov poob qis, nws ncaj qha nyob ntawm qhov tsis kam ntawm qhov resistor.
Piv txwv li, nyob rau hauv ib lub voj voog uas muaj qhov hluav taws xob ntawm 220 V muaj lub kauj uas muaj qhov tsis kam ntawm 1 ohm. Yog tias ib theem siv rau ib qho ntawm nws qhov kawg, thiab xoom mus rau qhov thib ob, qhov tseeb yuav tshwm sim, vim 1 ohm tsawg dhau. Yuav muaj lub zog loj, lub kauj yuav kub hnyiab, thiablub network yuav poob. Yog hais tias koj muab ob 500 kΩ resistors nyob rau hauv series nrog lub kauj, ces yuav tsis muaj luv luv Circuit Court, thiab lub kauj yuav ua hauj lwm raws li nws yuav tsum.
Thaum kev sib txuas ua ke, cov tam sim no ntawm txhua ceg yuav txawv, tab sis qhov voltages yuav zoo ib yam. Yog li, qhov loj ntawm qhov tam sim no ntawm txhua ntu nyob ntawm qhov tsis kam ntawm ntu no. Qhov no Circuit Court yog siv los ua kom qhov voltage poob. Piv txwv li, lub coil kuj yog tsim los rau 50 V. Txhawm rau txuas nws mus rau 220 V network, koj yuav tsum muab qhov tsim nyog rau qhov sib npaug nrog nws. Ib qho hluav taws xob poob yuav raug tsim rau ntawm nws, thiab lub kauj yuav tsis hlawv.
Yog li, kev sib txuas thiab sib txuas yog siv rau hauv cov xwm txheej tshwj xeeb thiab ua haujlwm raws li Ohm txoj cai.
Yog tias LEDs txuas nrog hauv cov koob, ces peb yuav tsum nco ntsoov tias yog tias tsawg kawg ib qho tsis ua tiav, tag nrho cov saw hlau yuav tawm mus. Raws li twb tau hais lawm, qhov tam sim no yog ib qho, ntawm qhov chaw ntawm qhov tawg, cov nqi nres nres, thiab lub voj voog tawg. Thaum sib txuas ua ke, nws tsis muaj teeb meem qhov twg LED teeb meem, lwm tus yuav nyob twj ywm.
Yog cov kev tawm tsam tau ua tiav siv tib qhov txiaj ntsig ntawm cov resistors, ces nws tag nrho cov nqi yuav sib npaug rau cov khoom ntawm ib qho kev tawm tsam los ntawm tag nrho cov ntsiab lus.
Yog tias qhov tseem ceeb ntawm cov resistors txawv, ces lawv tag nrho cov kuj yuav sib npaug rau cov sum ntawm cov resistors ntawm txhua yam.
Nyob rau hauv ib qho kev sib txuas, kev suav ua tau txawv me ntsis. RauPiv txwv li, muaj ib lub voj voog ntawm peb qhov kev tawm tsam nrog cov npe R1, R2, R3. Txhawm rau kom paub qhov kev tiv thaiv tag nrho ntawm lub voj voog thaum sib txuas ua ke, nws yog ib qho tsim nyog los suav cov lej ntawm cov txiaj ntsig sib txuas ntawm cov txiaj ntsig, uas yog, ntxiv peb feem 1 / R1 + 1 / R2 + 1 / R3. Cov zauv feem raug txo mus rau ib qho kev faib tawm - thiab cov txiaj ntsig tau suav. Qhov tshwm sim feem yog thim rov qab thiab tus nqi kawg yog xam.
txhawm rau xaiv cov kev tawm tsam rau txhua lub voj voog, nws yog ib qho tsim nyog yuav tsum tau muab xam kom raug. Qee cov kws tshaj lij sim xaiv cov resistors los ntawm kev sim. Txawm li cas los xij, txawm nyob rau hauv cov ntaub ntawv no, nws yog ib qho tsim nyog yuav tsum muaj tsawg kawg yog kwv yees paub tias qhov ntsuas qhov ntsuas qhov twg tuaj yeem ua tau zoo.
