. "DC electricity" . "DC(direct current)" . "(DC)" . "direct electrical current" . "direct current" . "DC system" . "DC power" . . "Direct-Current Circuits" . "DC charging" . . "DC powered" . . "DC excitation" . . "VDC" . . "DC voltage source" . . . "three-wire" . . . "not alternating" . "power" . "Vdc" . "small direct current power supply" . . "DC current" . . "direct-" . . . "DC voltages" . . . . "DC" . . "constant DC" . "DC source" . "D.C." . . "DC link capacitors" . "Direct current" . "direct electric current" . "electrical" . "d.c." . "=" . "DC voltage" . . . . . "DC electricity supply" . . . . . . "static" . "Method of Obtaining Direct current" . "DC circuits" . "DC-power" . "direct voltage" . . . . "Current" . . "direct" . . "DC response" . . . "DC generator" . . "DC \\\"leakage current\\\"" . . "DC voltage sources" . "Direct Current" . "Direct current" . "direct current (DC)" . "dc" . . . . . . . . . . "DC traction" . "galvanic current" . . "DC electric fields" . . "direct-current" . .