LEDs supplying and connecting method for producing lamp e.g. automobile lamp, involves connecting LEDs in series and associating Zener diode in parallel on each LED, where diode presents Zener voltage value greater than LED voltage

摘要

The method involves connecting LEDs (7) in series and associating a Zener diode (8) in parallel on each LED. The diode presents a Zener voltage value larger than LED voltage supplied by a current regulator (6). An AC voltage (U1) is limited in current by an electronic circuit (1) and a switching unit (2), and is rectified by a diode bridge (3). Voltage (U2) provided by the bridge is filtered by a capacitor (5), and an inrush current is limited by a resistor (4) while charging the capacitor. The voltage (U2) is directly applied to the LEDs through the regulator.