Lighting device for universal lighting structures has a chain of luminous diodes joined up in a circuit in series with Zener diodes to shunt each diode

摘要

Luminous diodes (D1-D3) are joined up in a circuit in series. Each diode is correspondingly shunted with Zener diodes (D4-D6) that have a sharp bend of the characteristic, a Z-voltage and a Z-current. The Z-voltage is greater than the working voltage of an LED and less than the doubled working voltage of an LED. These voltages have a resistance to compare with that of an LED.