Light generating device for ensuring dynamic lighting in signal light system, has set of zener diodes, and set of LEDs supplied with power by current source, where each zener diode is connected to corresponding LED in anti-parallel manner

摘要

The device has a set of zener diodes (31), and a set of LEDs (1) connected in series and supplied with power by a current source (4). Each zener diode is connected to the corresponding LED in an anti-parallel manner. The LEDs are distributed in branches connected in parallel between supply voltage (VCC) and reference voltage (21). The LEDs and the zener diode are implanted on a metallic support or on a printed circuit board. A voltage measuring device is connected to terminals (32, 33) of the zener diodes.