FIELD: electricity.
SUBSTANCE: invention relates to lighting engineering. The device for determination of the brightness control phase angle set by operating the brightness control for the solid-state lighting load, comprises a processor with digital input, first diode, connected between the digital input and voltage source, and a second diode, connected between the digital input and earth. The device also comprises first capacitor, connected between the digital input and determination node, second capacitor, connected between a the determination node and earth, and resistance, connected between the determination node and node of rectified voltage, which accepts rectified voltage from the brightness control. The processor is made with a possibility of discretising digital impulses at digital input on the basis of rectified voltage and identifying a phase angle of the brightness control on the basis of lengths of discretised digital impulses.
EFFECT: improvement of precision of regulation of luminosity of solid-state lighting load.
9 cl, 17 dwg
