dot/bar graph LED controller question.

[Impmon]

I'm building a variable speed fan controller (tutorial at
http://casemods.pointofnoreturn.org/vregtut/) and I would like to add
an IC to display the 10 seg LED to display the level in bargraph
display. But I can't remember what part # it is! >_< I'm pretty sure
it starts with LM3xxx so can anyone fill in the missing numbers? TIA!

 

[Matt J. McCullar]

I'm building a variable speed fan controller (tutorial at
http://casemods.pointofnoreturn.org/vregtut/) and I would like to add
an IC to display the 10 seg LED to display the level in bargraph
display. But I can't remember what part # it is! >_< I'm pretty sure
it starts with LM3xxx so can anyone fill in the missing numbers? TIA!

That sounds like the good old LM3914. Try this:

www.national.com/pf/LM/LM3914.html

 

[BobG]

Conversation from geek quiz show "Name That Chip":
"Alex, I can name that chip in THREE numbers!"