LED LIGHTING FIXTURE CONNECTION DIAGRAM TO AC NETWORK Russian patent published in 2016 - IPC H05B37/02 

FIELD: electricity.

SUBSTANCE: invention can be used for connection of lighting fixture to AC network. Invention summary consists in that connection circuit of LED lighting fixture to AC network comprises n (n=2, 3, …) in-series connected LEDs, diode rectifier, which positive output is connected to first LED anode, first resistor, with one output connected to diode rectifier negative output terminal, wherein circuit includes n controlled switches, wherein first switch is connected in parallel to second LED, second switch is connected in parallel to third LED, …, n-1 switch is in parallel to n-th LED, n-th switch first output is connected to n-th LED cathode, and second output is to first resistor second output, controller with processor and two ADC, resistor voltage divider from series-connected second and third resistors, connected in parallel to diode rectifier output, first ADC differential inputs are connected to first resistor, second ADC differential inputs are connected to third resistor, and processor n outputs are connected to control inputs of first, second, …, n-th controlled switches.

EFFECT: enabling possibility of increasing light flux, reducing emission of harmonics in electrical network and increasing device power factor.

1 cl, 2 dwg