Consistent with an example embodiment, there is a method for regulating a LED current flowing through a LED circuit arrangement at a mean LED current level. Said radio system comprises a multiplicity of traffic channels, each traffic channel being associated with a unique coding scheme. The cathode terminal is grounded. The cantilever beam may be any shape or size. The control member passes through the fuel storage device and is rotatably set in the holding space. An interactive investment simulation game is also provided for public participation in evaluating the actual demand of unsigned artists.