LED displays (TIL305, TIL308, etc.)
mcguire at neurotica.com
Tue Sep 30 16:03:49 CDT 2008
On Sep 30, 2008, at 2:21 PM, Roy J. Tellason wrote:
>> I do a lot of stuff with Nixie tubes.
>> 7441s are pretty rare, but 74141s are around. The Russian clone
>> of the 74141, the K155, is readily available on eBay at reasonable
>> prices. I've used quite a few of them with good results.
> That numbering is completely new to me, but then I haven't kept up
> with a
> fair amount of stuff anyhow. Do you know of datasheets for those
> out there
I've put a copy of the K155 datasheet here:
>> Nixie tubes really aren't that difficult to drive. If you decide
>> to give them a shot, drop me a note and I'll send you some info to
>> get you started.
> I wouldn't mind playing with some, if I had the appropriate
> transformer and
> such to drive them with. Used to be that you could get a
> transformer with a
> nominal 125VAC output fairly easily, I haven't looked to see if
> they're out
> there these days.
Ugh, line power. Much safer to power stuff from low-voltage DC.
Try this step-up circuit; it is based on an MC34063 app note design
which I've tuned a bit and adapted for current component availability:
It's cheap, easy to build, and powers Nixies nicely.
Port Charlotte, FL
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