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Old 9th Oct 2019, 6:53 pm   #66
G6Tanuki
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Join Date: Apr 2012
Location: Wiltshire, UK.
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Default Re: Your first experience with LEDs?

Quote:
Originally Posted by Steve G4WCS View Post
LM3914 linear, 3915 log, up to 10 could be cascaded, they were fun
Yes that's the beasties. They were rather nifty when compared with the effort needed to achieve the same result with discrete transistors and a voltage-divider network.

I remember that you could even at one time buy those DIL "Bar-graph" LEDs which had the first 6 or 7 LEDs green, then a couple of orange and finally one red, specifically for use with the 3914/3915 chips.
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