RESONANT CONVERTER Russian patent published in 2015 - IPC H02M3/337 

FIELD: electricity.

SUBSTANCE: this invention is related to power supply circuit (101) comprises of bridge circuit (103), multitude of resonant circuits (107, 107', 107") connected to bridge circuit (103), at that each resonant circuit (107, 107', 107") may be connected to the respective load circuit (109, 109', 109"), which may include one or several loads (111), multitude of power supply switching units (129) connected between bridge circuit (103) and the respective load circuit (109) in series to one or several loads (111) of the respective load circuit (109, 109', 109") for the purpose of connection or disconnection of the respective load circuit (109) to/from bridge circuit (103), and control unit (131) to control power supply switching units (129) synchronously to resonant current (I_res) of resonant circuit (107) corresponding to one of the above power supply switching units (129), at that resonant circuit (107, 107', 107") and power supply switching unit (129) is provided for each load circuit (109, 109', 109").

EFFECT: possibility of independent decrease in brightness within the whole range.

12 cl, 6 dwg