FIELD: lighting.
SUBSTANCE: LED lamp with brightness adjustment from the power demand side, operating on the DC power supply, which feeds the lighting subsystem. The dimmer unit selects the power consumption level of the lighting system. This choice alters the efficiency of the lighting subsystem in such a way that a reduction in power consumption actually leads to an increase in efficiency. The choice can be, for example, in the choice of a particular passive scheme, including the LEDs, inside the lighting subsystem.
EFFECT: each passive scheme can have different volt-ampere characteristics, which leads to different L-P-characteristics, due to which there is improved efficiency at lower powers.
16 cl, 5 dwg
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