Lub transformer tam sim no (VT) yog cov cuab yeej hloov hluav taws xob siab mus rau qhov tsis tshua muaj hluav taws xob thiab tau siv dav hauv cov tshuab hluav taws xob. Hauv lub ntsuas hluav taws xob, VT hloov lub siab -voltage hluav taws xob teeb liab mus rau qhov qis-voltage teeb liab uas lub ntsuas ntsuas tau nyeem los txiav txim seb qhov hluav taws xob muaj pes tsawg.
Thaum txhim kho lub ntsuas hluav taws xob thiab VT, kom paub qhov txawv ntawm qhov polarity yog qhov tseem ceeb; txwv tsis pub, kev nyeem ntawv 'meter' yuav tsis raug. Nov yog yuav ua li cas txiav txim siab polarity ntawm transformer tam sim no:
Nrhiav cov cim polarity ntawm VT, feem ntau "N1" lossis "N2".
Txuas VT rau hauv Circuit Court raws li cov cim.
Siv qhov ntsuas hluav taws xob rau hauv Circuit Court, feem ntau 220V.
Saib xyuas qhov ntsuas ntsuas thiab sau nws.
Rov qab qhov kev sib txuas ntawm qhov ntsuas hluav taws xob, uas yog, thim rov qab qhov kev sib txuas ntawm 220V input kab rau VT.
Saib xyuas qhov ntsuas ntsuas dua. Yog qhov kev nyeem ntawv rov qab rau yav dhau los, VT txuas tsis raug.
Yog tias qhov kev nyeem ntawv tseem tsis hloov pauv, VT txuas nrog raug, thiab kev nyeem ntawv ntsuas yuav tsum raug.
