| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform the ON/OFF control of a light emitting diode lamp with a dynamo as a power supply in a bicycle or the like even with a relatively cheap switching element. <P>SOLUTION: A cheap bipolar transistor, a MOS-FET or the like can be used as the switching element by providing the ON/OFF control switching element on a low potential side, i.e. on the side where a circuit current flows out in place of on the high potential side of an LED lamp circuit. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
