FIELD: instrumentation-making industry.
SUBSTANCE: proposed device that can be used, for instance, in advertisement boarding to display static or moving images is provided with newly introduced ac voltage supply, second MxN light-emitting diodes, and M capacitors inserted between each of second power leads of M switches and cathodes of respective M first groups of light-emitting diodes.
EFFECT: reduced power requirement for displaying visual information.
1 cl, 1 dwg
