POWER SUPPLY UNIT FOR SIGNALLING ILLUMINATION DEVICES Russian patent published in 2015 - IPC H02J9/06 H05B33/08 

FIELD: electricity.

SUBSTANCE: invention is referred to signalling illumination devices (LED₁, LED_n), which at initiation indicate "stop" or "danger" signals; for the purpose of their reliable power supply the invention suggests a circuit with the first power supply unit (20) in the operating mode and the second auxiliary power supply source (24). Whereat the second auxiliary power supply source (24) is coupled inductively (T1) to a current loop (27) of the signalling illumination devices while the signalling illumination devices (LED₁, LED_n) are coupled by capacitance with ground (Ground_aux).

EFFECT: eliminated necessity to use switches in operation at transfer to the emergency mode.

5 cl, 4 dwg