FIELD: electricity.
SUBSTANCE: methods and apparatus for adjusting the colour or colour temperature of combined light emitted by one or more light-emitting diodes (LED) driven by a single pulsed stabilising circuit are disclosed. Properties of the light output are changed by intentionally varying a source voltage provided as an input to the stabilising circuit. The connection of different coloured LEDs in various branches of the pulsed stabilising circuit facilitates adjustment of the respective drive currents provided to the LEDs, and hence the colour or colour temperature of the resulting combined light, merely by adjusting the level of the source voltage of the stabilising circuit.
EFFECT: enabling change of colour or colour temperature of LEDs, which are part of a voltage stabiliser.
21 cl, 11 dwg
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