I have a project where I used TLC5940 and TLC5947's to drive nixie tubes
a while back.
Chill4844, I am not completely sure what you are trying to accomplish,
but using a few transistors, you can drive nixie tube segments with the
Ti parts.
I used a pair of transistors in front of the nixie tubes to drive
various nixie tube parts. You need a low voltage PNP transistor, and a
high voltage NPN transistor for every segment. I have some boards that
work for in-2 tubes around here. I can post schematics if people here
are interested.
Chase, does that clear things up for you? I can post links to the parts
on mouser that I used if you like. If you are in the US, I can mail you
a few transistors to make your project work. I believe I have extras.
Michael-
On 12/19/2013 10:08 AM, Chill4844 wrote:
Thanks to all of you for the help, sorry I haven't been really present
in my own thread lately, I've been busy with some other projects for
Christmas presents. Here is how the project stands thus far. The
project is working well as a visualizer using the TLC5940, the only
thing that needs some work is the overall linearity of the output, I
have a plan to create use a custom scale that I made dividing the
tubes into 128 parts and to create an array of the representive
numbers for each segment. then using that number to get accurate 128
segment representation. I'm basically using Jeff Malins purposed
approach as of this moment and when i plot the points it looks
somewhat like a Power Curve. Does my plan sound reasonable? Or does
anyone have any other ideas to better the linearity, perhaps different
value resistors?? ? Again thank you to all of you who have helped me
greatly in this and other projects, It's quite a great blessing to
have access to such a pool of knowledge.
On Monday, December 2, 2013 9:24:03 PM UTC-5, Chill4844 wrote:
Good evening folks.
I hope someone out there has some thoughts on this and is willing
to help out this noob.
The senerio is this:
I am attempting to use an Arduino in conjunction with a TLC5940
<http://www.ti.com/lit/ds/symlink/tlc5940.pdf> to drive an array
of IN-9's (And not kill myself or blow anything up) the problem
being if i understand it right (which I probably don't) is that
instead of a positive PWM out the arduino the TLC5940 works by
sinking the current on the cathode side. I don't think i can use
this with my standard mpsa42 (and I'm not going to attempt
anything until i get some advice) I do have some mpsa92's available.
Anyone who can help straighten me out I would greatly appreciate it.
Thanks
Chase
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