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TonyDuell · 10th Oct 2019, 4:46 am

Wasn't there also an LM3916, which was a similar bargraph driver with yet another response curve?

You could also get at one time little PCBs with the LED and LM3914 dice directly on the board and bonded out to each other. A dozen or so external connections to the LM3914 connections other than most of those for the LEDs. RS did them, I still have the datasheet. I have one used as a battery condition indicator in a piece of telecoms test equipment (Tester 301B), one of the LEDs or its connection has failed alas. It's not important (it's used in bar rather than dot mode, so the missing LED simply appears as a gap in the bar and I can still tell when the battery needs charging) but I'd like to replace it. But finding a replacement is hard, it pretty much has to be the original module to fit in the space.

10th Oct 2019, 4:46 am	#68
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,208	Re: Your first experience with LEDs? Wasn't there also an LM3916, which was a similar bargraph driver with yet another response curve? You could also get at one time little PCBs with the LED and LM3914 dice directly on the board and bonded out to each other. A dozen or so external connections to the LM3914 connections other than most of those for the LEDs. RS did them, I still have the datasheet. I have one used as a battery condition indicator in a piece of telecoms test equipment (Tester 301B), one of the LEDs or its connection has failed alas. It's not important (it's used in bar rather than dot mode, so the missing LED simply appears as a gap in the bar and I can still tell when the battery needs charging) but I'd like to replace it. But finding a replacement is hard, it pretty much has to be the original module to fit in the space.