Lighting unit i.e. LED-tube, for use in fluorescent lamp for illuminating e.g. rooms, has control electronics comprising current controller and formed in transformer-free manner and/or formed with non-wet-electrolytic capacitors

摘要

The unit (1) has LEDs (3) connected in series and supported by a printed circuit board (2), and a control electronics for supplying the LEDs. A connection unit (5) connects the control electronics with main voltage. The control electronics comprise a constant current controller that forms a series connection with the LEDs, where the control electronics is formed in a transformer-free manner and/or formed with non-wet-electrolytic capacitors. A load loop is connected with a rectifier over a resistor, and a housing (11) is made from polymethyl methacrylate.