30 led light from chip output ?? - Electronic Circuits Projects Diagrams Free

shohag49 · 18th April 2003, 01:44 AM

using the logical high ouput of a regular chip, what would be the best way to light 30 led's connected in series??

bogdanfirst · 18th April 2003, 12:01 PM

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?

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18th April 2003, 01:44 AM	(permalink)
shohag49	30 led light from chip output ?? using the logical high ouput of a regular chip, what would be the best way to light 30 led's connected in series??

18th April 2003, 12:01 PM	(permalink)
bogdanfirst	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?