INTERFACE CIRCUIT Russian patent published in 2016 - IPC H05B33/08 H05B37/02 

FIELD: lighting engineering.

SUBSTANCE: invention relates to lighting engineering. Interface circuit for light source operation from fluorescent lamp electronic driver is equipped with input terminals (7a, 7b) for connection with fluorescent lamp bulb electronic driver connecting terminals, - with first circuit (5a), mutually connecting first pair of input terminals (7a), - with second circuit (5b) mutually connecting second pair of input terminals (7b), - with third circuit (11, 9), mutually connecting first circuit first terminal (T1) and second circuit second terminal (T2), and containing rectifier (31), wherein above rectifier output terminals during operation are connected with light source. Interface circuit is additionally equipped with first switching element (11) to control third circuit state of conductivity and over fourth circuit, connected with third circuit and containing sensor circuit (8) having output terminal connected with first switching element control electrode for determining high-frequency AC voltage amplitude between first and second terminals and switching of first switching element to conducting state, when high frequency AC voltage amplitude reaches preset value.

EFFECT: higher efficiency of fluorescent lamp emulating.

15 cl, 6 dwg