FIELD: electricity.
SUBSTANCE: LED source includes a three-phase voltage rectifier (first voltage source), the second adaptive voltage source, a voltage sensor of the first voltage source, a group of series-connected LEDs with a passive current source, the first and second voltage sources connected agreed and consistently, and in their total voltage a group of LED is included, series-connected with a passive current source, wherein the voltage of adaptive (second) voltage source is controlled by a voltage sensor of the first voltage source so that the total voltage of both voltage sources is always permanent and depends on the instability range of AC power and voltage on adaptive voltage source.
EFFECT: increase the reliability of drivers of LED lightings, increase their efficiency.
3 cl, 3 dwg
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