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> On Aug 27, 2016, at 9:48 PM, [email protected] wrote: > > > [email protected] Google Groups > Topic digest > View all topics > New clock kit in the making - 5 Updates > Help with IN-8 tube mount for Threeneuron's 6 digit clock - 5 Updates > b7971 segment current - 4 Updates > Another batch... - 2 Updates > Maybe a stupid question... - 2 Updates > Is it a GN-1? - 1 Update > New clock kit in the making > Joe Croft <[email protected]>: Aug 27 09:11AM -0500 > > Hi Yall, > > I've been working on a new clock kit. I hope to have it ready for > Christmas. I've attached a couple of pictures of the first one which was > built as a wedding present for my nephew. My wife hand painted the face. We > are planning to have the hand painted faces as an option. The second > picture shows off face more and how it looks with the switches and screws > in place. If I can figure it out, I plan to put plugs over the screws in > the final version and maybe caps over the switches if I can work it out. > > I'm also working on a different case. Sadly, I ran out of time before I > could get it completed. Thank God for Pier 1 Imports! > > -joe > threeneurons <[email protected]>: Aug 27 06:51PM -0700 > > Now that's a neat concept ! Someone talked about using neon bargraphs (IN9 > or IN13) to make an analog clock, but I don't recall actually seeing one. > Or maybe I did, and just forgot. Anyways, nicely done ! > > One of the bad things about getting old is the memory going. On the plus > side, I can get away with a film catalog of only a half dozen films, and > its like seeing the movie all over again. > > On Saturday, August 27, 2016 at 7:11:50 AM UTC-7, joenixie wrote: > Joe Croft <[email protected]>: Aug 27 08:54PM -0500 > > There was another on the list about 6mos ago, it was a kick starter and > above my pay level. I try not to copy, some days timing just sucks. I > started on this then found his. Mine is going to be a kit with mostly > through hole parts. > > -joe > > On Aug 27, 2016 8:51 PM, "'threeneurons' via neonixie-l" < > gregebert <[email protected]>: Aug 27 07:46PM -0700 > > Glad to see you had better success than I did with liner tubes; I > experimented with a few IN-9's and found them to be unpredictable. > > Instead, I used strings of NE-2 bulbs (304 in total) to make my big clock, > which you can see in my profile pic. To get a sense of size, the clock is > just over 20 inches in diameter. > threeneurons <[email protected]>: Aug 27 11:54PM -0700 > > On Saturday, August 27, 2016 at 6:54:48 PM UTC-7, joenixie wrote: > > > There was another on the list about 6mos ago, it was a kick starter ... > > No wonder I forgot about it. Kickstarter and other crowd funding sites, > were created with good intentions, but it seems the charlatans have caught > on, and just use it as another avenue for their con games. So, I > deliberately cleared that out of my mind. > > Good luck with the kit. Should do well. > Back to top > Help with IN-8 tube mount for Threeneuron's 6 digit clock > Jason Perez <[email protected]>: Aug 27 12:13PM -0700 > > John, > Just wondering how the eagle part is coming? I would be perfectly happy using > your initial layout, it looks great! Could you attach the eagle file for me > to look over? Not sure exactly what size your design is but hopefully i could > open it with my student version of the program. > Joe Croft <[email protected]>: Aug 27 02:25PM -0500 > > I'm a big gEDA person myself. I drank the linux kool-aid a long time ago > and I do enjoy laying out my boards in a more manual way. It is reasonably > easy to use makes nice boards and schematics and creating foot prints are > very hard after the first one or two. > > Good luck keeping your new addiction under control ;) > > -joe > > On Fri, Aug 19, 2016 at 1:18 PM, Jason Perez <[email protected]> > wrote: > > John Rehwinkel <[email protected]>: Aug 27 04:21PM -0400 > > > Just wondering how the eagle part is coming? I would be perfectly happy > > using your initial layout, it looks great! Could you attach the eagle file > > for me to look over? Not sure exactly what size your design is but > > hopefully i could open it with my student version of the program. > > I've been swamped at work, so I haven't made further progress. I think I may > have some sizes wrong. > > The schematic is here: > http://www.vitriol.com/ftp/in8board.sch > <http://www.vitriol.com/ftp/in8board.sch> > > The board is here: > http://www.vitriol.com/ftp/in8board.brd > <http://www.vitriol.com/ftp/in8board.brd> > > - John > Jason Perez <[email protected]>: Aug 27 07:39PM -0700 > > No problem, good to hear from you again, I was hoping you didn't disappear! > . I will take a look through the files and familiarize myself with eagle > once I get it downloaded. Should be approved for the educational edition > early next week. > > On Saturday, August 27, 2016 at 4:21:12 PM UTC-4, jrehwin wrote: > Jason Perez <[email protected]>: Aug 27 08:04PM -0700 > > Thanks for the input. Yea that's a new one I've never heard of, looks like > a decent program. Haha yea, I love nixies! It's a great hobby for me right > now, after doing fluid mechanics all day I just spend a couple hours > soldering :) > > On that note, my dekatron tubes came friday! What a gorgeous piece of > engineering. Can't wait till they're powered up! > > <https://lh3.googleusercontent.com/-CxZ829Ta6Ys/V8JUljj7xYI/AAAAAAAAABE/t6XWDwFBPuoeTxva3ANLr-wcE7XZHH78ACLcB/s1600/IMG_3004.JPG> > > > On Saturday, August 27, 2016 at 3:25:21 PM UTC-4, joenixie wrote: > Back to top > b7971 segment current > "JohnK" <[email protected]>: Aug 27 10:21PM +0930 > > I haven't looked at electro specs closely since the mid '90s. I was involved > with a product that used a conventional aluminium electro in an apparently > undemanding application. The value was 10uF and variously two types were > used- a 10VDC and a 25VDC [ or a bit higher - I forget]. The DC voltage > across the cap was constant at a bit under 2 volts DC and was on one of the > inputs to a comparator. There were issues with the product but early in the > troubleshooting the input circuitry came under scrutiny and it was noticed > that the capacitors were being run significantly under their 'working > voltage'. The capacitor manufacturers [one Euro] were both asked for comment > and both advised against the use of that style of electro under 75 to 80% of > the working voltage. The reasons from both related to 'forming'. It wasn't > clear whether they meant initial forming or continued forming though. To my > mind it doesn't explain the seemingly satisfactor y operation of electros as > coupling capacitors in early transistor radios for instance. Hard facts > concerning time-frames and numerical values for degradations weren't > forthcoming. > [BTW, the product problem was actually related to the specs for a triac being > considerably improved by the manufacturer; the old snubber values were now > causing the problem. ] > > > John K > > > ----- Original Message ----- > From: gregebert > To: neonixie-l > Cc: [email protected] > Sent: Saturday, August 27, 2016 2:52 AM > Subject: Re: [neonixie-l] Re: b7971 segment current > > > On Wednesday, August 24, 2016 at 12:21:56 AM UTC-7, Jeff Walton wrote: > >During the life of the clock, there were a couple failures of the caps in > >the voltage doubler > > > > When your cap(s) failed, was it catastrophic ? I've only had 1 electrolytic > fail in recent history, and it was a low-voltage cap that dried-out and > shorted at medium-resistance in a Heathkit device (not a clock). No smoke, > etc. > > > I've tried to prevent/mitigate cap failures in my designs by using the > smallest possible fuse, keeping the caps away from any heat, staying well > below the rms/ripple current spec, and using a higher voltage rating than > necessary (eg 450v cap running at 340VDC). > > > Recently, I found caps designed for solar-energy applications (TDK Epcos) > that boast 85C operation for 10,000 hours, so I use them now. Most > electrolytics are rated for 2000 hours. That doesn't mean the caps will fail > (ie, explode) in 2000 hours; they just wont be within spec (capacitance > out-of-spec, but otherwise functional). > > > Electrolytics are a strange beast compared to other components. > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/66df0632-699e-4d44-866b-a9c52e1fc701%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > Dekatron42 <[email protected]>: Aug 27 07:04AM -0700 > > I ran across similar capacitor problem when using surface mount tantalum > capacitors and MLCC capacitors, without the proper working voltage across > them they behave poorly. I had to read a lot of design notes and datasheets > to realise that they did not fit my design, MLCC capacitors has to be > reformed by heating over time (high capacitance types at least) and they > change value when stored and soldered. I didn't know about this before I > was using them but had to change to polypropylene capacitors in the end. > You can check the measurement specifications for MLCC capacitors and smd > tantalums from several manufacturers as well as from the instrument > manufacturers to see that these capacitors behave in manners that most > people wouldn't think of. Just measuring them to get correct readings isn't > possible with simple capacitor testers as the bias voltage when measuring > is usually to low - learned this while trying to measure them! > > > /Martin > > rmp <[email protected]>: Aug 27 01:38PM -0700 > > To the folks who are still running the "Giant Nixie Clock". From the early > 1970's: > I built one of these way back when. Unfortunately, it is long gone, but as I > recall it treated the tubes as 7-segment devices, and so the 2 middle > vertical and the 4 diagonal segments will NEVER have been lit. Am I correct? > It would be an interesting exercise to make a test jig that can illuminate > all the segments and see how much, if any, the unused segments are brighter > than the used segments. > Just food for thought. > "[email protected]" <[email protected]>: Aug 27 02:06PM -0700 > > On Saturday, August 27, 2016 at 1:38:28 PM UTC-7, rmp wrote: > > > To the folks who are still running the "Giant Nixie Clock". From the early > > 1970's: > > ... as I recall it treated the tubes as 7-segment devices...Am I correct? > > Yes. It was based on the MM5314 from National Semiconductor. > Back to top > Another batch... > Nicholas Stock <[email protected]>: Aug 27 12:26PM -0700 > > http://www.ebay.com/itm/Lot-of-9-BURROUGHS-7032-GIANT-NIXIE-DISPLAY-TUBE-Used-/291856948389?&_trksid=p2056016.l4276 > > Not my listing blah blah....;) > > Pretty badly mirrored. > "SWISSNIXIE - Jonathan F." <[email protected]>: Aug 27 01:42PM -0700 > > I wonder in what kind of device they were used > Back to top > Maybe a stupid question... > karl welty <[email protected]>: Aug 27 12:58PM -0700 > > In a very cobbled fashion (clip leads) I tried the two sections > together. Over a period of a couple hours of knob twiddling they > yielded a variety of sounds reminiscent of a vintage pinball machine, > or at the least old school video games. The vast majority of the knob > settings however yielded what even I would consider mostly unusable > noise. BUT the purpose of this experiment was more proof of concept > than finished circuit or components. A neon based timing and voltage > source can be used as a CV source for a VCO downstream. > > In operation with the crude vco circuit I had built, the A opamp seems > to also function as a gate... or somehow, discrete gating is occurring > with the bits in context. All my prior attempts at gating a neon based > relaxation oscillator have resulted in pitch ramping up and down with > hang after the gate closed. I was getting distinct note on/off with no > pitch drift. So thats a first, and lots of other stuff learned as > well. > > It doesnt work as intended, but the lesson continues and there are > tweaks to try. Change up the vco circuit. Big fun. > karl welty <[email protected]>: Aug 27 01:04PM -0700 > > @John - which of the additional components would remain ? Just the > feedback resistor and cap, or any of the rest of it as well. Napkin > drawing ? > Back to top > Is it a GN-1? > "SWISSNIXIE - Jonathan F." <[email protected]>: Aug 27 10:31AM -0700 > > I bought a unknown nixie tube for a few bucks, and i would like to find out > which one it is. I have attached pictures, the tube is about 6cm long, 4cm > diameter and has about 25mm digits. The digits look hand made, or like very > early machinery. On the is engraved "35H4", engraved by hand. > > It looks very similar to the GN-1, but the both versions of the GN-1 i > know, have different grids, one version has no grid, and the other has a > different aligned grid. > > Maybe mine is a different version, or a whole different model? > > Any info would be great! :) > Back to top > You have received this digest because you're subscribed to updates for this > group. You can change your settings on the group membership page. > To unsubscribe from this group and stop receiving emails from it send an > email to [email protected]. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/534F6B1E-90EE-42C7-BF48-0D2E09032C3F%40aol.com. For more options, visit https://groups.google.com/d/optout.
