E lect ric ▁transform ers ▁Category : Three - phase ▁AC ▁power <0x0A> </s> ▁Manuel ▁O lag uer ▁F eli ú ▁( Dec ember ▁ 2 7 , ▁ 1 7 5 9 ▁– ▁June ▁ 7 , ▁ 1 8 2 4 ), ▁was ▁a ▁military ▁engineer ▁who ▁became ▁Field ▁Marsh al ▁and ▁Captain ▁General ▁of ▁Gal icia . ▁Part icip ated ▁in ▁the ▁colonial ▁wars ▁in ▁the ▁Captain cy ▁General ▁of ▁Chile ▁and ▁the ▁Vic ero yal ty ▁of ▁Peru . ▁ ▁Biography ▁ ▁He ▁was ▁born ▁on ▁December ▁ 2 7 , ▁ 1 7 5 9 ▁in ▁Ce uta ▁although ▁desc ended ▁from ▁Catal ans ▁and ▁was ▁first ▁cousin ▁of ▁Antonio ▁O lag uer ▁F eli ú , ▁Vic ero y ▁of ▁the ▁Rio ▁de ▁la ▁Pl ata ▁and ▁Secretary ▁of ▁War ▁of ▁the ▁King ▁of ▁Spain , ▁Carlos ▁IV . ▁Like ▁their ▁el ders , ▁followed ▁a ▁military ▁career , ▁starting ▁as ▁a ▁Cad et ▁in ▁the ▁fixed ▁batt alion ▁of ▁Ce uta ▁from ▁ 6 / V / 1 7 7 0 . ▁▁ ▁In ▁ 1 7 7 8 ▁he ▁rose ▁to ▁Sub - lie utenant ▁with ▁posts ▁in ▁the ▁Royal ▁Engine ers . ▁Form ed ▁in ▁Val encia , ▁Madrid ▁and ▁Gib ral tar . ▁He ▁acted ▁in ▁the ▁war ▁against ▁England ▁( 1 7 8 1 ). ▁ ▁In ▁ 1 7 8 7 , ▁in ▁the ▁late ▁colonial ▁period ▁in ▁Chile , ▁he ▁was ▁appointed ▁by ▁Royal ▁Order ▁to ▁the ▁city ▁of ▁Val