A track adapter comprising: a base, fixedly connectable to a lamp, provided with a first central axis; a pick-up post, rotatably provided above said base about said first central axis, the post body provided with a negative conductive sheet and at least two positive conductive sheets, all positive conductive sheets comprising a positive pick-up section and a positive contact extending from said positive pick-up section to the top of said pick-up post, wherein the top of said pick-up post refers to the portion that is first inserted into the track along said first central axis, all positive contacts being spaced about said first central axis, said negative conductive sheet comprising a negative pick-up section; an adjustment conductive part, rotatably provided around said first central axis of said pick-up post, comprising a conductive contact movably connected to said pick-up post, said conductive contact having a moving path passing through all positive contacts; and an adjustment knob, fixedly connected to said adjustment conductive part and with a central axis of rotation coinciding with said first central axis; characterized in that the adjustment conductive part is provided at the top of said pick-up post and the conductive contact is movably connected to the top of said pick-up post, wherein said track adapter further comprises a positive conductive connection fixedly connected to said base and kept in constant conduction with said conductive contact by means of a first rotating conductive structure; and that said first rotating conductive structure comprises: a first annular conductive sheet, connected to said positive conductive connector; said adjustment conductive part further comprising: a second annular conductive sheet, fixedly connected to said adjustment knob and pressed and coaxially provided with said first annular conductive sheet by means of an elastic member, said conductive contact being connected to said second annular conductive sheet; a first pivot, set in the middle of the top surface of said pick-up post and inserted in said first annular conductive sheet and said second annular conductive sheet. a base, fixedly connectable to a lamp, provided with a first central axis; a pick-up post, rotatably provided above said base about said first central axis, the post body provided with a negative conductive sheet and at least two positive conductive sheets, all positive conductive sheets comprising a positive pick-up section and a positive contact extending from said positive pick-up section to the top of said pick-up post, wherein the top of said pick-up post refers to the portion that is first inserted into the track along said first central axis, all positive contacts being spaced about said first central axis, said negative conductive sheet comprising a negative pick-up section; an adjustment conductive part, rotatably provided around said first central axis of said pick-up post, comprising a conductive contact movably connected to said pick-up post, said conductive contact having a moving path passing through all positive contacts; and an adjustment knob, fixedly connected to said adjustment conductive part and with a central axis of rotation coinciding with said first central axis; characterized in that the adjustment conductive part is provided at the top of said pick-up post and the conductive contact is movably connected to the top of said pick-up post, wherein said track adapter further comprises a positive conductive connection fixedly connected to said base and kept in constant conduction with said conductive contact by means of a first rotating conductive structure; and that said first rotating conductive structure comprises: a first annular conductive sheet, connected to said positive conductive connector; said adjustment conductive part further comprising: a second annular conductive sheet, fixedly connected to said adjustment knob and pressed and coaxially provided with said first annular conductive sheet by means of an elastic member, said conductive contact being connected to said second annular conductive sheet; a first pivot, set in the middle of the top surface of said pick-up post and inserted in said first annular conductive sheet and said second annular conductive sheet. a first annular conductive sheet, connected to said positive conductive connector; said adjustment conductive part further comprising: a second annular conductive sheet, fixedly connected to said adjustment knob and pressed and coaxially provided with said first annular conductive sheet by means of an elastic member, said conductive contact being connected to said second annular conductive sheet; a first pivot, set in the middle of the top surface of said pick-up post and inserted in said first annular conductive sheet and said second annular conductive sheet. a second annular conductive sheet, fixedly connected to said adjustment knob and pressed and coaxially provided with said first annular conductive sheet by means of an elastic member, said conductive contact being connected to said second annular conductive sheet; a first pivot, set in the middle of the top surface of said pick-up post and inserted in said first annular conductive sheet and said second annular conductive sheet.