Hi and thanks Ok I almost to be sure but I had a small doubt, this PCB drive this 30 Led Bar with Common Anode like this, do you have any idea how it make it ?Hello,
It could well be a LM224, wich is comparable with the LM324.
The LM224 has a lower offset and temperature drift.
Bertus
Oh thanks Bertus, in fact I want to use this BAR display with 3 LM3914/15 for a 30 LEDS Vu-Meter do you know it's possible ? do you have a link or exemple schematics ?Hello,
Have a look at this page:
https://embedded-lab.com/blog/lab-11-multiplexing-seven-segment-led-displays/
It uses a common anode 7 segments display, but the principe is still the same.
Bertus
Hi,Hello,
I have never seen schematics with a multiplexed display and a LM3914.
I have seen cascaded circuits, as in the datasheet.
Bertus
Definitely not a LM324. That is a 14 pin DIP.Hi all and happy new year,
I am not very sure, somebody can help me to identify this IC ? L324 ? (LM324 ? ) this IC is on a DC Barmeter.
Thanks by advance.View attachment 257814
Oh of course ! thanks I am stupid...have you got idea what's the IC is ?Definitely not a LM324. That is a 14 pin DIP.
I have the response, this is a special component !! sorry and thanks all...Oh of course ! thanks I am stupid...have you got idea what's the IC is ?
Hi Sagor and many thanks for your help but this IC is a specific product, the Engineer want to protect his design I can understand ! Best and happy new year to youOther devices ending with 224 are 74LS224, which is a 16 by 4 bit Synchronous memory.
Not likely it is that, but I thought I'd throw in that guess....
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