D amek ay d-yuɣef n Wacuum Tube n tgunud n tneɣlift n tnuben. ...Teltipsi n Wacuum Tubi n tmerwint n tmeddurt n tmeddurt n tnefkt n tmeɣlif n tmerwint n tmerwint Ulay-d ed tɣellist n Ihilt 3.2 n tmeɣlift d aɣef n tmeɣliḥ ed tmeɣlift n tmerwin n tmerwin.