Q: Kuv pom P1 / P2 ntawm thawj thiab S1 / S2 ntawm qhov thib ob. Nws txhais li cas tiag?
A: Polarity qhia peb txog kev txheeb ze ntawm tam sim no. Txij li thaum AC hloov cov kev taw qhia, peb xav tau ib qho kev siv kom paub tias txoj kev twg yog "mus tom ntej."
Subtractive Polarity:
Txoj cai: Tam sim no IN rau P1=Tam sim no OUT ntawm S1 ntawm tib lub sijhawm.
P1/P2: Thawj cov terminals. S1 / S2: Cov khoom siv thib ob.
Analogy: Xav txog daim iav. Yog tias koj taug kev mus rau P1, koj qhov kev xav taug kev tawm ntawm S1.
Vim li cas Polarity thiaj li tseem ceeb? Yuav ua li cas yog rov qab?
Q: Yog tias qhov loj npaum li cas, vim li cas qhov kev taw qhia tseem ceeb?
A: Rau kev tiv thaiv kev taw qhia thiab sib txawv, thim rov qab polarity yog kev puas tsuaj.
Cov nyhuv "Kev Txhaum Cai" (Kev Tiv Thaiv Txawv):
Kho: 100A Hauv - 100A Tawm=0Qhov txawv (Relay zoo siab). ✅
Rov qab: Relay pom 100A Hauv thiab -100A Tawm → zoo li 200A sab hauv txhaum. ❌
Qhov tshwm sim: Instant dag mus txawv tebchaws. Kev lag luam loj heev vim poob qis.