▁college ▁in ▁ 1 9 8 2 , ▁he ▁took ▁to ▁pro tot yp ing ▁in ▁electron ics , ▁which ▁was ▁his ▁h ob by ▁when ▁he ▁was ▁in ▁Gor akh pur ▁living ▁with ▁his ▁late ▁mother ▁( she ▁died ▁in ▁ 1 9 8 2 ). ▁He ▁designed ▁a ▁D X ing ▁radio ▁receiver ▁when ▁he ▁was ▁ 1 4 , ▁which ▁never ▁worked ; ▁however , ▁he ▁designed ▁his ▁own ▁circuit ▁and ▁made ▁all ▁the ▁PC B s ▁himself . ▁He ▁did ▁fre el ance ▁projects ▁for ▁Mar uti ▁and ▁H onda ▁Power . ▁In ▁ 2 0 0 0 , ▁H onda ▁Power ▁product ' s ▁engineering ▁department ▁in ▁U tt ar ak hand ▁had ▁designed ▁a ▁charg ing ▁gens et ▁with ▁a ▁technical ▁f law . ▁So , ▁the ▁Indian ▁Army ▁didn ' t ▁give ▁the ▁gens et ▁clear ance . ▁Pal ▁designed ▁an ▁S MP S ▁based ▁voltage ▁reg ulator ▁for ▁the ▁gens et , ▁after ▁which ▁it ▁was ▁accepted ▁by ▁the ▁army . ▁ ▁Pal ▁also ▁takes ▁positions ▁as ▁an ▁environmental ist ▁on ▁the ▁issues ▁of ▁saving ▁trees ▁in ▁Del hi ▁and ▁in ▁that ▁regard ▁seems ▁to ▁have ▁come ▁under ▁various ▁thre ats ▁from ▁an ▁anti - tree ▁lo bb y . ▁ ▁Pat ents ▁▁ ▁for ▁an ▁" Arr ang ement ▁for ▁using ▁induction ▁motor ▁as ▁a ▁sensor ▁to ▁sense ▁its ▁own ▁rotation ▁when ▁elect rical ▁power ▁is ▁not ▁being ▁supplied ▁to ▁it " ▁▁ ▁for ▁an ▁" E lect ric ▁motor ▁vehicle ▁with ▁passenger ▁opening