| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an LED turn-on device capable of turning on light emitting diodes except light emitting elements in which an open fault occurs among a plurality of series-connected light emitting diodes even when the number of the light emitting elements in which an open fault occurs increases. <P>SOLUTION: The LED turn-on device 1 includes SIDACs (Silicon Diode for Alternating Current) S1 to Sn provided in pairs with light emitting diodes LED1 to LEDn (n: an arbitrary integer of≥3), and an overcurrent suppression portion 11. The overcurrent suppression portion 11 includes resistances R1, R2, a Zener diode ZD, and a switch element Q and constitutes a so-called overcurrent suppression circuit. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
