( ( Transformer ( ( ( ( A device ) ( that ( ( uses ( principals ( of ( electromagnetic induction ) ) ) ) ( to ( `` ( ( step-up '' ) ( -LRB- ( increase -RRB- ) ) ) ) ) ) ) ) or ) ( ( `` ( ( step-down '' ) ( -LRB- ( decrease -RRB- ) ) ) ) ( voltage ( from ( an ( AC source ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Transformer) (NP (NP (NP (DT A) (NN device)) (SBAR (WHNP (WDT that)) (S (VP (VBZ uses) (NP (NP (NNS principals)) (PP (IN of) (NP (JJ electromagnetic) (NN induction)))) (PP (TO to) (NP (`` ``) (NP (NN step-up)) ('' '') (PRN (-LRB- -LRB-) (NP (NN increase)) (-RRB- -RRB-)))))))) (CC or) (NP (NP (`` ``) (NP (NN step-down)) ('' '') (PRN (-LRB- -LRB-) (NP (NN decrease)) (-RRB- -RRB-))) (ADJP (JJ voltage) (PP (IN from) (NP (DT an) (NNP AC) (NN source))))))) (. .)))
Transformer A device that uses principals of electromagnetic induction to &quot;step-up&quot; (increase) or &quot;step-down&quot; (decrease) voltage from an AC source.
(ROOT (S (NP (DT A) (JJ electronic) (NN transformer)) (VP (VBZ uses) (NP (JJ electromagnetic) (NN induction) (S (VP (TO to) (VP (VB change) (NP (NP (DT the) (NN voltage)) (PP (IN of) (NP (JJ electric) (NN current))))))))) (. .)))