Tus Qauv Ntawm Cov Ntaus

1. Lub plhaub (hlau, yas lossis qhib hom)

2. Kev tawm tswv yim thiab kev tsim tawm

3. Cov kauj vuam sib hloov tau yooj yim, cov khoom siv hluav taws xob (capacitors, CPUs, microcontrollers, MOS leeg, transistors, hloov cov leeg)