S shohag49 New Member Apr 17, 2003 #1 using the logical high ouput of a regular chip, what would be the best way to light 30 led's connected in series??
using the logical high ouput of a regular chip, what would be the best way to light 30 led's connected in series??
bogdanfirst New Member Apr 18, 2003 #2 you can use a darlington transistor or 2 transistors to drive the leds. i assume that you have a small voltage power suply for the electronics and a highter voltage power suply(40-50 volts) for the 20 leds in series?
you can use a darlington transistor or 2 transistors to drive the leds. i assume that you have a small voltage power suply for the electronics and a highter voltage power suply(40-50 volts) for the 20 leds in series?