| 摘要 |
FIELD: lighting. ^ SUBSTANCE: light-emitting diode illuminator according to its first embodiment comprises a voltage down-converter being connected through a bridge rectifier and a power supply control element with at least one light-emitting diode and a capacitor filter being placed between said bridge rectifier and said light-emitting diode and connected thereto in parallel. Wherein said voltage down-converter includes at least one shunting resistor and at least one capacitor and also at least one current-limiting resistor being connected thereto in parallel. According to the second embodiment a light-emitting diode illuminator is supplemented by a storage battery having a voltage stabiliser connected thereto in parallel and coupled with a light-emitting diode through a power supply control element. According to the third variant a light-emitting diode illuminator is supplemented by a photoelectric transducer having an illumination control element used for controlling a power supply control element. ^ EFFECT: eliminating voltage jumps, improving the reliability and service life of a light-emitting diode illuminator, reducing power consumption from fixed AC mains and eliminating factors having adverse effects on people. ^ 4 cl, 4 dwg |
