I finally got my OG-4s in today from across the pond! w00t! I'll be
soldering together my kit as soon as I have time and will report back my
results. In case you can't tell, I'm very excited, as I haven't done
anything dekatron related yet (unless you count buying a few A101s that are
still
Are you sure 1A will not hurt your LEDs? It sounds a bit much.
Jens
I have come across another one of these clocks:
http://www.dougswordclock.com/kits.html
It looks like he uses 117 LEDs, but maybe he lights up words rather
than single letters, couldn't really tell.
One way of doing it with
Thanks for the excellent advice. I will try a toroidal inductor, I don't know
why I never thought of that. I am also building an experimental design based on
the TPS40210 — that part is much cheaper despite requiring some more passive
components, and it has an automotive variant, which means it
Works! Thanks for the help and comments.
It didn't work yesterday because I used a data array from a simple Arduino
sketch that I found on a forum. Most of the elements were in the wrong
positions, maybe it was for a different IRIG spec. It doesn't seem to
matter if the first frame at 0
Jens, as somebody who uses a two stage direct drive vacuum pump everyday,
we utilize a cold finger trap inline with the vacuum pump to trap volatiles
(I'm an organic chemist). This will increase your ultimate vacuum (by
reducing gas pressure), but I'm not sure what millitorr you're
I have never used a potentiometer in my MAX1771-based supplies. The
reason is, they make it more difficult to do a better PCB layout, and
anyway the regulated output voltage from the supply using fixed 1 %
resistors is accurate enough for the purpose of powering a Nixie
display. I could always
Hi Nick,
but I'm not sure what millitorr you're after...
for the start, I am only aiming at maybe 1 Torr or so, it does not have
to be perfect. The pump I purchased is used in refrigeration and is
specified to 0.03mbar which is pretty good if true.
I am not aiming for a pure vacuum at the
When I have a large system to evacuate it takes rather long, granted. But if
I have leakages somewhere (for example at the cock that I use to feed the
penning mixture to the system) then the intruding air will distribute
homogeneously inside the vacuum.
That's not really true. Pressure
I normally work with 5mm or 3mm IR leds and pulse currents between 1A
and 2A are quite common. Not too sure about visible light LEDs, I
found some that have absolute maximum ratings of 300mA @ 1/10 duty
cycle. The used duty cycle for this clock is much lower so I am pretty
sure they will withstand
If I were you I would spend a little bit of time to work out how a
simple WWV transmitter can be made. It really is only a small step to
go from the point where you are now. It's a beautiful clock and if you
have a GPS to WWV converter (RF), the clock can be used globally and
is still doing the
You'll be happy with it. I got my OG-4s the other day and put mine together.
Took it to work to show off. People can't help but stop and ask what is that?
I want to do some experimenting with the trigger pulse to drive a clock after I
get the timing down. I did notice that one of the dekatrons
I normally get the questions...
What is it for?
What does it do?
I wanna reply, Just look at it. Isn't it obvious?
Michail
In a message dated 2/1/2012 5:28:28 P.M. Pacific Standard Time,
daddyvan2...@yahoo.com writes:
what is that?
--
You received this message because you are
When I was a kid my dad made boxes with flashing neon bulbs. He was always
asked the same thing. He called them nothing boxes because they did nothing
:)
It were those little puppies that got me fascinated with electronics and
things that glow from a very early age :)
-joe
On Wed, Feb 1, 2012
Yes, me too. But it does give me the opportunity to talk about it. When you
explain that this was state of the art to someone very young they give you
this special look. This is a fun hobby. :)
From: micha...@aol.com micha...@aol.com
To:
Reminds me of an old friend that has long since passed.
He always said, Flashing light technology
Now, I walk in a server room and it always reminds me of the term
Flashing light technology.
Michail
In a message dated 2/1/2012 6:53:53 P.M. Pacific Standard Time,
I got interested in electronics at age 12 when I checked out a book from the
school library. The Boy's Second Book of Radio and Electronics by Alfred
Morgan. I built the photo tube relay that's in there and entered it in the
science fair. I still have it. One of these days I'll see if it will
It's alive! The build went off almost without a hitch...In my excitement,
I soldered the IRFD320 in backwards, despite the drain orientation being
clearly marked in the directions! Anyways, since I had ordered two kits I
used the one from the second kit as a spare instead of attempting to
A 5 Mhz AM transmitter that can modulate 100Hz and 1000Hz, putting out
a few milliwatts, would be perfect. I know little about analog
electronics. Someone else will have to do that part.
On Feb 1, 4:41 pm, Cobra007 mic...@xiac.com wrote:
If I were you I would spend a little bit of time to work
On 2/1/12 8:05 PM, Dennis wrote:
I got interested in electronics at age 12 when I checked out a book from
the school library. The Boy's Second Book of Radio and Electronics by
Alfred Morgan. I built the photo tube relay that's in there and entered
it in the science fair. I still have it. One of
Good photo David. Upon thumbing through this book I just might have to build
something out of here. Maybe that two stage tube amp. Glow is glow right?
From: David Forbes dfor...@dakotacom.net
To: neonixie-l@googlegroups.com
Sent: Wednesday, February 1, 2012
20 matches
Mail list logo
