Tham txog cov teeb meem tshwm sim ntawm kev siv lub tshuab hluav taws xob digital los ntsuas cov khoom siv hluav taws xob hauv tsheb: Yog tias muaj 12V lossis 5V ntawm lub davhlau ya nyob twg ntawm kev ntsuas cov hlua hlau, nws raug suav hais tias yog cov hlua hlau yog qhov zoo.
Feem ntau, qhov ua haujlwm voltage ntawm cov khoom siv hluav taws xob hauv lub tsheb yog 12V. Yog tias cov khoom siv hluav taws xob tsis ua haujlwm ib txwm, peb yuav ntsuas seb lub zog hluav taws xob ntawm qhov txuas ntawm cov khoom siv hluav taws xob puas yog qhov qub. Piv txwv li, yog hais tias lub horn ntawm lub tsheb tsis suab, tus kws kho mob feem ntau unplugs lub horn plug, nias lub horn, thiab ntsuas seb puas muaj 12V ntawm lub hwj chim ntawm lub horn plug thiab hauv av. Qhov kev txiav txim no nrawm dhau. Lub multimeter ntsuas qhov voltage ntawm lub electromotive quab yuam, thiab lub virtual voltage kuj ntsuas 12V. Tom qab kev sim, peb pom tias yog ib qho 10-ohm resistor txuas nrog hauv series hauv Circuit Court, qhov voltage yog 5.94V, thiab nws yog hloov los ntawm 1K ohm. resistor, qhov voltage tseem yog 5. 94V. Yog tias koj siv lub teeb ntsuas hluav taws xob siab los ntsuas lub zog hluav taws xob thiab saib xyuas qhov ci ntawm lub teeb, koj tuaj yeem tsis txhob raug dag los ntawm hluav taws xob virtual.
