[neonixie-l] Blast from the Past

I was sorting out my office and came across TWO ORIGINAL RAY WEISLING FOUR LETTER WORD KITS. I ordered them years ago, but during the wait of more than a year before he shipped them (old timers here will remember that frustration) I had lost patience and designed my own. I thought about

Re: [neonixie-l] Re: AC VFD Filament Driver Question

I use H bridges for my VFD designs. The VFD heaters are designed to run as slow as 50Hz, as the thermal inertia is more than sufficient for a steady display. There will be no beating. I generally run them at about 200- 500 Hz. The bias needed is negligible, just enough to make the anodes

Re: [neonixie-l] VFD pinout required

Since an extensive search of the web failed to turn up any actual information about this display, I'll post my own findings here. The heater voltage is 5V. Reasonable brightness requires an anode/grid voltage of 30-35V. Here's the pinout and footprint. Pins numbered from bottom left ACW to top

Re: [neonixie-l] VFD pinout required

n find the heater voltage by using a buck converter and raising the >> voltage to a bit under where it starts to visibly glow at all, then map >> out the anodes and grids with 12v or so, usually displays like with that >> one with lots of characters are muxed at a higher vol

Re: [neonixie-l] VFD pinout required

Ok never mind, it's on the back of the glass. [image: Picture 2 of 8] -- 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 neonixie-l+unsubscr...@googlegroups.com.

[neonixie-l] Re: Does anyone have the accurate angles and dimensions of the IN-18 pinout?

For what it's worth, it fits the same 14 pin socket as the 3LO1 and 6LO1 small CRTs. -- 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

[neonixie-l] VFD pinout required

Does anyone have the pinout for the Noritake Itron DC209-H2 glass? It's a 20 character dot matrix VFD. There are plenty of pictures online but no trace of a data sheet. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this

[neonixie-l] Re: Expensive?

I've told my wife, when I'm gone, under no circumstances sell my nixie junk for what I told you I paid for it! -- 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

[neonixie-l] Re: Green Nixie tube?

I suspect any green or violet nixies have been re-gassed, as I'm sure they were never manufactured. The electrical characteristics must be entirely different from the usual neon. However, I have seen such a thing before - in the bottom left corner of a screen in the "Guitar Heroes" video game,

Re: [neonixie-l] Japanese Nixie Watch

d to see you are still with us. > > Terry > > On Friday, November 19, 2021 at 6:28:59 PM UTC-6 petehand wrote: > >> I've made half a dozen IN16 clocks. The only one that failed is the 10 >> hours '1' cathode on my Altoids tin clock, which has gone open circuit. The >>

Re: [neonixie-l] Japanese Nixie Watch

I've made half a dozen IN16 clocks. The only one that failed is the 10 hours '1' cathode on my Altoids tin clock, which has gone open circuit. The '0' and the '2' still work, in 24 hour mode. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To

[neonixie-l] Japanese Nixie Watch

A few years ago I noticed that pretty much all the IN16s appearing on Ebay were being bought by a Japanese customer, in lots of 1000. I wondered when they would reappear. Tokyo Flash

[neonixie-l] Re: Any circuit diagrams for Non-Linear Systems digital voltmeters, especially Model 64?

I had a few of those stepper switches at one time. They found a use in a few other things besides DVMs, including some slot machines I worked on. Until I found that article I linked above, though, I could never understand why they were always ELEVEN POSITIONS (count 'em). Two different models -

Re: [neonixie-l] How to kill a microcontroller with one finger

Ah, this is not uncommon. A lot of AVR Dragons were slain for the same reason. Touching the regulator affects its feedback and therefore its output voltage. A tiny ESD, not enough to cause any damage, can drive the output high for enough milliseconds to cook a 3.3V IC downstream. On Wednesday,

[neonixie-l] Re: FW-4 rev c

Mark is correct in all respects. Sometime in the past the 78L05 regulator was removed and presumably the logic was powered externally. I strongly recommend replacing the 78L05. The board only draws 10-20mA from 5V and using an external 5V supply is a nuisance and an unnecessary point of

[neonixie-l] Re: NASA APOLLO Era Fairchild/Systron Donner 7050 Volt Ohm Meters

I picked up a Systron Donner model 7004 about 10 years ago, dating from about 1970. I was going to scrap it for the nixies before I realized it was still as accurate as my best modern DVM and had one more digit. But it wasn't NASA - I think the calibration sticker (now lost) said Goodyear. It

[neonixie-l] Re: While we're talking 7971's, I have a 4LW clock question

I suspect it's the tubes. As they get older they take a little longer to ionize when they've been off for a while. Shoot, some that I've bought in Ebay took a day before they would strike. Once they're running, although it is a multiplexed design there are always residual ions in the tube

[neonixie-l] Re: Q: Active full-wave rectifiers

I would use four discrete schottky diodes in a bridge, and a low dropout regulator like an LM1117. The 5V version of the LM1117 regulates down to 6.2V input and delivers 800mA. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe

Re: [neonixie-l] Pinball score reel clock

Most pinball score reels are 10 position, but Bally made one that is 12 position, part number CD-29-1600. Those would come in very handy for the hour and 10's minute indicators. They're very hard to find. They were used as payout multipliers on multi-coin slot machines, since they were able to

Re: [neonixie-l] Re: IV-17 FLW clock.

No. You can't upload anything onto it. But if you send me the number font I'll consider programming it in. On Wednesday, January 23, 2019 at 12:32:48 AM UTC-8, Thomas Kummer wrote: > > Pete, can I upload a custom font for the digits onto it? > > > -- You received this message because you are

[neonixie-l] Re: B7971 "Repair"

I have. I had a similar problem and cured it by rapping the tube face down, hard, on a wooden board. The crossed segments sprung apart. I figured it must have been mechanical shock that crossed them to begin with so another shock might separate them. I'm not recommending it, just saying it

Re: [neonixie-l] Re: Welcome & please introduce yourself!

Ok, I'll probably make some more after Christmas. On Sunday, December 23, 2018 at 8:21:07 AM UTC-8, Thomas Kummer wrote: > > Yes, like those!! I would love to buy an IV-17 FLW clock from you!! > Please!! > > Sent from my iPhone > > On Oct 3, 2018, at 15:10, petehand >

[neonixie-l] Re: Single inductor supplies and heat issues

In my opinion, 100uH is a bit low for a frequency of 40-60kHz. I would use at least 220uH. For estimating saturation current, multiply the total load current by the voltage step-up and double it (since the input current is a triangle). So if you want 15mA at 180V from a 12V supply, you can

[neonixie-l] Re: Welcome & please introduce yourself!

I quit making them because I didn't think there were enough B7971s left to justify it. -- 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

[neonixie-l] Re: Welcome & please introduce yourself!

Pete Hand here. I've been a member of the group for at least ten years but I hardly ever post. I just scan the digest and log in if I see something of interest. I'm a retired EE. I'm probably best known here for my Four Letter Word designs, which I created because I had promised my daughter a

[neonixie-l] Re: Edge lit displays identification help needed

The smaller one is made in England. I picked up a 1960s DVM that had five of them at a government surplus auction.They were driven by stepping switches. I also have some that were made in Japan, by Stanley Electric Co in about 1970. These are not numeric. They have images. [image:

Re: [neonixie-l] OT: Looking for folks interested in 3l01i CRT discussion

That would not prolong its life for more than a few days. The screen is too small, there are no dead areas except between the ticks around the edge. The hands pattern visits the entire screen 24 times in a day. It gets more action at the center, near the hands roots, and that's the section that

Re: [neonixie-l] Ever seen this?

I'd like one. Those would be a drop-in replacement for the 3LO1 in my clock - just a bit smaller. On Monday, May 14, 2018 at 12:08:17 PM UTC-7, nixiebunny wrote: > > I made a little tiny scope clock with this CRT back in 2001. > http://www.cathodecorner.com/sc60.html > > I have collected a few

Re: [neonixie-l] Re: OT: Looking for folks interested in 3l01i CRT discussion

I don't know - it's a mystery. I checked everything very carefully, including the heater voltage (with a true-RMS voltmeter, since the driving waveform isn't a sine wave), in case I was overheating the cathode. I have a few more tubes, but when the second one failed like the first I put the

[neonixie-l] Re: OT: Looking for folks interested in 3l01i CRT discussion

After a couple of weeks the phosphor gets too dim to see in daylight. I know it's the phosphor because when I adjusted it to move the ticks to new locations where it had never been scanned, they were bright again. I put a new tube in and the same thing happened. The phosphor coating is really

[neonixie-l] Re: OT: Looking for folks interested in 3l01i CRT discussion

I've got something to say about them. It's a good thing you bought a dozen, because that means if you do a project using one, you'll be able to keep it going for a whole year. On Saturday, May 12, 2018 at 10:43:39 PM UTC-7, gregebert wrote: > > I just bought a dozen 3l01i tubes from Yuriy

[neonixie-l] Re: B5991 sockets

Whatever you do, don't try to plug them into Russian IN12 sockets! They are superficially the same and look as if they will fit, but the dimensions are off just enough that your B5991s will break when you push them home. *Ask me how I know.* On Friday, March 16, 2018 at 1:08:55 PM UTC-7,

Re: [neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

There must be hundreds of that design out there. I personally sold more than 100 kits of one kind or another and the Jeff Thomas version used the same circuit. I've used it with regular nixie tubes as well as B7971s, and I've never heard of one failing. -- You received this message because

Re: [neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

You obviously missed that in my design, pin 1 of the HV5812, the VPP pin, is tied to approximately 60 volts. An "off" output then is pulled up to 60V, which is high enough that the cathode is extinguished, and any leakage current is clamped to 60V. On Tuesday, March 6, 2018 at 8:58:46 AM

Re: [neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

On Monday, March 5, 2018 at 2:43:13 PM UTC-8, Paul Andrews wrote: > > Its an HV5812, with cathode resistors and MPSA42/92 anode switching. I > guess Pete could give you all the details. > > On Monday, March 5, 2018 at 5:36:13 PM UTC-5, gregebert wrote: >> >> What kind of segment driver does the

[neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

*Calling Sam Guss! *Your kit has been sitting here ready for a month and you haven't replied to my emails. Please respond if you still want the kit, otherwise I'll offer it to someone else. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To

[neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

*Calling Sam Goss! *Your kit has been sitting here ready for a month and you haven't replied to my emails. Please respond if you still want the kit, otherwise I'll offer it to someone else. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To

[neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

The PCB is the same size, same tube spacing and same mounting holes as the original Weisling board. On Monday, February 12, 2018 at 12:04:59 PM UTC-8, Paul Andrews wrote: > > Hi Pete, > > Are dimensioned drawings available? I need to design a case. > >> >> -- You received this message because

[neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

I started shipping kits this week. I should have them all packed and ready in a couple more days, so watch your emails. -- 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

[neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

SOLD OUT - all gone, sorry. -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to

[neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

Everybody seems very anxious to pay, but I have a principle, that I don't take any money until I have the stuff in a box ready to ship. So relax. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving

[neonixie-l] Re: FLW kit

Oh ye of little faith. };> -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to

Re: [neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

As of 6pm Pacific time on January 5th, there is ONE KIT LEFT. Everyone who emailed me should have had a confirmation email. Just in case anyone has the impression that I'm an insane philanthropist, I should explicitly mention that the kit DOES NOT INCLUDE B7971 TUBES. -- You received this

Re: [neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

Everyone who wants a kit, please send me direct email to peteh...@gmail.com. There are only about a dozen boards and when they're gone, they're gone, unless the offer is massively oversubscribed. JW, I already got your email. Mike M, it was your inquiry that started this so you're at the front

[neonixie-l] Re: status of original Weisling FLW kit design? Clone kits? Software?

LOL, I ordered a Weisling kit for my daughter too, and it didn't arrive, and that's why I designed my own version. I still have a dozen PCBs that use all through hole components, if you want one. With this design all the components are underneath the board, tubes on top. On Wednesday,

Re: [neonixie-l] Four Letter Word partial kit

I also have a couple of Weisling kits, unassembled. By the time I received them, more than 2 years after I ordered, I'd made my own and used up my B7971s. On Saturday, December 31, 2016 at 8:49:30 AM UTC-8, Greg P wrote: > > Surprised you received them, John. > -- You received this message

[neonixie-l] Re: Four Letter Word partial kit

e a couple of micros on it and some headers installed . All > BOM / etch drawings and instructions are included. > > $25 shipped? > > John > > On Saturday, December 31, 2016 at 5:02:38 AM UTC-5, petehand wrote: >> >> Probably mine. I'm not aware that anyone else ever offer

[neonixie-l] Re: Four Letter Word partial kit

Probably mine. I'm not aware that anyone else ever offered a kit. On Friday, December 30, 2016 at 12:41:29 PM UTC-8, Greg P wrote: > > What kit is it? Not many out there for the 7971 tubes. > > > > On Friday, December 30, 2016 at 2:20:28 PM UTC-5, John wrote: >> >> I've got a "kit" for this

Re: [neonixie-l] How hot should a mosfet get?

It's an unfortunate characteristic of MOSFETs that the Rds(on) increases with temperature. As they get hotter, they dissipate more power and get hotter still. I've had MOSFETs get so hot they actually unsoldered themselves, though remarkably, they still worked once they cooled down. But it's

[neonixie-l] Re: Question about LM4871 application for VFD fiament.

The LM4871 wouldn't be my choice for a filament driver. I use the Si9986, which is an H bridge, with my VFD projects. http://www.alliedelec.com/siliconix-vishay-si9986cy-e3/70026303/ -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To

Re: [neonixie-l] My NixiChron is sick, what do I do?

It's not necessary. The HV5530 is a CMOS chip, so its low and high logic thresholds are 30% and 70% of whatever the VCC happens to be. It only needs to be run at 12V if you want to meet the datasheet specs for maximum clock rates (8MHz). I have never seen a nixie clock design that clocks out at

Re: [neonixie-l] Re: The Light Clock Kickstarter

I've seen other nixie clocks on Kickstarter that looked like absolute garbage, yet had tens of thousands subscribed. I always ask myself, who ARE these people with so much money, and where the hell are they when I put something nice on Ebay or Etsy? I guess I could put something on Kickstarter

[neonixie-l] Re: Need Nixichron!!

I have a bare PCB somewhere and could build it up, but I don't have a programmed PIC for it. -- 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

[neonixie-l] Make a clock, go to jail

Although nothing should surprise me by now about the insanity of the American school system, this one touches a nerve. A kid - a young teenager - made a clock of his own design, took it to school, and found himself in police custody accused of making a fake terrorist bomb - a "movie bomb".

Re: [neonixie-l] Re: Questions regarding IV-17 or IV-14 vfd tubes.

I use AC drive for multicharacter displays, where there's a definite gradient from end to end. I use the Si9986 H bridge. It works over the range 3.5V to 13.5V with TTL level inputs over the whole range. -- You received this message because you are subscribed to the Google Groups neonixie-l

Re: [neonixie-l] Re: Questions regarding IV-17 or IV-14 vfd tubes.

Beg pardon. I had originally written 4.7 ohms, changed one instance, not the other. On Wednesday, July 22, 2015 at 8:43:22 AM UTC-7, I wrote: Yellow violet gold ?? Try again. Ira -- You received this message because you are subscribed to the Google Groups neonixie-l group. To

Re: [neonixie-l] Re: Questions regarding IV-17 or IV-14 vfd tubes.

Not quite. The pin 11s go to a (20 divided by 8) ohm resistor, like 2 point 7 ohms. Yellow Violet Gold. On Tuesday, July 21, 2015 at 6:05:22 AM UTC-7, Chaos Hydra wrote: Thanks for your reply! Yeah I mean pin 12 to 25 VDC, mis-type. So for the first part. I will have 8 tubes. So I put 47 ohm

[neonixie-l] Re: Questions regarding IV-17 or IV-14 vfd tubes.

Heater voltage, I think you mean. How many are you running? Connect one heater pin (1 or 11) of each tube to 5V through a 47 ohm resistor, then the other pin of all of them together to ground through one resistor, of 20 ohms divided by the number of tubes. So for 4 tubes, use a resistor of 20/4

Re: [neonixie-l] Re: First Nixie Project Schematic Review

I was looking at my posts again and see I missed out a necessary tip. The ADC conversion period *must be longer* than the PWM rate, otherwise it may go crazy making multiple changes to the period in the same cycle. The ADC and the PWM don't need to be synchronized. I find making the conversion

Re: [neonixie-l] Re: First Nixie Project Schematic Review

(and especially debugging). Good to know about the HV5530 at 5V too! -Brian On Wednesday, June 10, 2015 at 5:34:19 AM UTC-4, petehand wrote: I've used the main CPU as the switching regulator in just about all my HV projects, and I can tell you exactly how to go about it. A word of warning

Re: [neonixie-l] Re: Any one have a dutchtronix kit or PCB?

I was shishlakji on the old group, it's the same clock. Here is the schematic. The M62354 DAC may need a little explanation. It's a voltage output serial input DAC. The voltage reference is floating - does not need to be ground at one end - this is unusual in DACs. Here the reference is the

[neonixie-l] Re: Any one have a dutchtronix kit or PCB?

My experience with Russian tubes, the 3LO1 in particular, is that they barely last 500 hours. I did an extremely simple scope clock six or seven years ago and I was going to publish it for anyone to make, but I make the mistake of mentioning it on this forum and within days the Russian seller

[neonixie-l] Re: FLW Clocks

I would do that for you. How many have you got? On Friday, April 17, 2015 at 5:26:47 AM UTC-7, Greg P wrote: I wish someone would build a kit that uses the 5971 Alpha tube. I have a stash of these just waiting to be lit. -- You received this message because you are subscribed to the

Re: [neonixie-l] FLW Clocks

That is an excellent list. On Thursday, April 16, 2015 at 9:18:09 AM UTC-7, Nixcited delighted wrote: Grahame, I was working on a list of proverbs and quotes mentioning time or related to time in some way, for a similar reason. -- You received this message because you are subscribed to

Re: [neonixie-l] Re: Multiplexing noise

be a simple solution. /Martin On Thursday, 12 March 2015 17:58:55 UTC+1, petehand wrote: Yes, it should work perfectly in that application with a CMOS gate. I would not try it with a TTL gate though, as it relies on the output going to the 5V rail to turn the transistor off and bipolar can't get

Re: [neonixie-l] Re: Multiplexing noise

Yes, it should work perfectly in that application with a CMOS gate. I would not try it with a TTL gate though, as it relies on the output going to the 5V rail to turn the transistor off and bipolar can't get up there. To use TTL you would need to add pullup resistors to 5V on the gate outputs.

Re: [neonixie-l] Re: Multiplexing noise

On Thursday, February 26, 2015 at 3:05:55 AM UTC-6, petehand wrote: https://lh5.googleusercontent.com/-_PML27wwc9w/VO7hHsuYRwI/ATA/LVcwCOp5mWw/s1600/IN17.jpg I did mean to change R22 to 10k, but I can suggest an even better way. This is a circuit I've used to multiplex IN17s

Re: [neonixie-l] Re: Multiplexing noise

One more thing about the cascode. Transistor Q1 is dissipating 170mW with the values shown. It may get a little warm - you have to watch that. You can put a helper resistor between Q1 collector and Q2 base. The value is completely immaterial since the current is set by the R2 emitter resistor,

Re: [neonixie-l] Re: Multiplexing noise

https://lh5.googleusercontent.com/-_PML27wwc9w/VO7hHsuYRwI/ATA/LVcwCOp5mWw/s1600/IN17.jpg I did mean to change R22 to 10k, but I can suggest an even better way. This is a circuit I've used to multiplex IN17s, with no dead period and no ghosting. It looks terrifyingly unsafe. Let me

[neonixie-l] Re: Multiplexing noise

Just move R22 etc to the other end of R21 etc, on the base of the PNPs. Where they are now, those resistors are are doing nothing but wasting power. When the NPNs turn on they're going to draw 1.6mA and drop 160V across the 100k resistors R21 etc. You need no more than 3V to turn on the PNPs,

Re: [neonixie-l] Re: Little machining Job - slightly OT

Touch of Stockholm Syndrome, Nick? Our captors aren't so bad! Those other people over there are much worse! Or is the the British stiff upper lip - It's only a flesh wound! Or has it reached the point of, We've always been at war with Oceana, and the chocolate ration has been increased! I

Re: [neonixie-l] Re: Little machining Job - slightly OT

Paul Parry's in England. I don't think they have Harbor Freight over there - they have to pay double price for everything, and then 20% tax on top. A Harbor Freight tool costs less than the tax they charge on a similar tool in England. On Thursday, February 5, 2015 at 7:51:53 AM UTC-8, I

[neonixie-l] Re: B7971 Ultronics ticker display?

I say these are not B7971 displays. They are too large, and the segments are too fat for neon and not evenly lit. They have bright spots, as if lit from behind by incandescent lamps. I happen to have a similar incandescent lamp display, though smaller, made by IEEE. On Thursday, January 22,

[neonixie-l] Re: Little machining Job - slightly OT

Have you looked to see if you can buy brass tube stock? Here's some I found in a few minutes - https://www.onlinemetals.com/merchant.cfm?pid=19814step=4showunits=inchesid=84top_cat=79 It's 25 thousandths oversize outside diameter but precisely right inside. You need about seven inches,

[neonixie-l] Re: 5 x CD27s on eBay...

I think I'll suggest that he reposts and sells them singly. Maybe he should put them on Etsy as antiques, there seem to be a lot of monied folk over there. On Sunday, October 5, 2014 5:08:45 PM UTC-7, gregebert wrote: No bidders came forward to start at $2500 US. It's amusing to watch the

[neonixie-l] Re: 5 x CD27s on eBay...

Not my auction either, but I know the seller, and he brought me these tubes to check out. I wired them up and created the composite photo to show all the digits evenly lit at 4mA. All the tubes are a little darkened, but it's very slight in the one on the left and most marked in the one on the

[neonixie-l] Re: Looking for documentation package for pete hands old FW-4 clock board

Sorry Michael, I don't remember seeing your email or I would have replied. I should put all the docs on a web site somewhere. I still have some PCBs if anyone wants one. Pete On Thursday, August 21, 2014 8:08:35 AM UTC-7, michael ohara wrote: I found an old FW-4 board but I don't have the

[neonixie-l] Re: Strange Strobe Behavior on my Nixie Clock

Looks like a design problem to me. The proper way to blank a nixie tube is to remove the anode voltage, either by killing the HV power supply or disabling the anode drivers. If you leave the power on and the anodes multiplexing with no cathode grounded, the anode has some capacitance to

[neonixie-l] Re: Extraordinary nixie/dekatron clock design

What kay486 said - spoiling the ship for a ha'porth of tar. But if the front panel was in cyrillic and it was knocked about a bit, all rusty and dented and with intermittent faults, then those nixies might be appropriate. -- You received this message because you are subscribed to the Google

Re: [neonixie-l] Re: O.T.but...

Is THAT what the V-shaped thing is for? I'm indebted to you sir - I never knew what it was for. On Tuesday, July 22, 2014 10:39:42 PM UTC-7, Nixcited delighted wrote: I use a fairly cheap device found in most UK hardware/tool shops as part of a sliding rule set. In my case it included just

Re: [neonixie-l] A use for all those Itron displays I've got in the garage

Grahame, Your comment nagged at me, so I did include Huffman compression and got nearly 100k of text down to 48k. I wrote a program to take a text file and output it a line at a time to a file I can directly include in my AVR code, along with the Huffman tree and a symbol table for looking up

Re: [neonixie-l] What type/size of plug for power supply of clock?

The most common size is 2.5mm barrel, 1.2mm pin. It looks like one of those. On Saturday, July 12, 2014 11:59:54 PM UTC-7, Dman777 wrote: But I can't tell what size that is...don't they come in different sizes? Thanks, -Darin -- You received this message because you are subscribed to

Re: [neonixie-l] A use for all those Itron displays I've got in the garage

Grahame, Thank you for the idea. I looked at the proverb list on your site, but in the end I used a combination of several other lists that includes quotations. I have other kinds of list I've been putting together, including bible verses and latin epithets, but regrettably I have only one

Re: [neonixie-l] Will Nixies match correctly if they all come from the same case/batch?

Soviet era nixies are not admired for their quality control. The digit alignment can be off noticeably even with tubes from the same batch in the same box. Soviet VFDs are just as bad - I've had IV16s out of the same box that differed by as much as 50% in brightness, so I have to program the

Re: [neonixie-l] Re: Nixie Clock - Time Cycle enough to protect against cathode poisoning? Without slot machine effect

On Wednesday, June 25, 2014 9:48:29 AM UTC-7, Jonathan wrote: I guess i don't know why cathode poisoning is such a big deal. If the digits i don't use don't work, what do I care? I guess I agree with you. With wired-in tubes you don't have the option to rotate them anyway, and it's highly

Re: [neonixie-l] A use for all those Itron displays I've got in the garage

In principle yes, but it's difficult to put together a kit for a surface mount project. For one thing, I can't program the QFP processor chip until it's soldered into the board. I can do you an assembled board if you like. On Wednesday, June 25, 2014 3:51:02 AM UTC-7, William Lee wrote: Very

Re: [neonixie-l] Without words

What does he care? He was only asking for $6000 on Kickstarter and raised nearly $20,000. I've seen other primitive Nixie projects on Kickstarter raise similarly unbelievable amounts. What I want to know is, who are these people willing to hand over that sort of money. Obviously Kickstarter is

Re: [neonixie-l] MC34063 SMPS questions

There are so many things wrong with this circuit that I scarcely know where to start. The basic operation of an up convertor is that a certain amount of power from the low voltage supply is stored as magnetic energy in the coil, and then released as high voltage when the field collapses.

[neonixie-l] Re: Camera Neons

Maybe these small neons? Left in the picture - a standard neon is on the right for comparison. The grid on the paper is 5mm, 0.2 inches. These are Chicago Miniature Lamp, part number A1B, Mouser part number 606-A1B.

[neonixie-l] Re: About this type edge lit display.

https://lh5.googleusercontent.com/-IWUu0t6ko9k/U3nDLaAWO_I/AJQ/EqyZQC4SXGA/s1600/pds008001.jpg https://lh6.googleusercontent.com/-vpATmPZ5wDM/U3nDOOUclfI/AJY/YUW4jOxxBKA/s1600/pds008005.jpg

[neonixie-l] Re: About this type edge lit display.

https://lh3.googleusercontent.com/-u8DwLE_kL9s/U3nFJK65rRI/AJs/JLNhKAD8cxc/s1600/pds008006.jpg https://lh6.googleusercontent.com/-I1tQBB_DVtc/U3nEaPZMzWI/AJk/laPR0MaAJsM/s1600/pds008007.jpg This is what they were made for and what they look like lit up. There are color filters

[neonixie-l] Re: VFD power supply plans or kits?

LM9022 - tens if not hundreds of thousands of them available here - http://www.chinaicmart.com/buyer/search.html?sel1=1keyword=LM9022Submit.x=0Submit.y=0Submit=Submit -- You received this message because you are subscribed to the Google Groups neonixie-l group. To unsubscribe from this group

Re: [neonixie-l] Nixie thermometer in Elektor journal

I had a bit of trouble finding the SHT21 in the US - all I could find from Sensirion was a *Parallax module at $43 http://www.digikey.com/product-search/en?vendor=0keywords=sensirion* - but the *SI7020-A10 from Silicon Labs

Re: [neonixie-l] Interesting document on Krypton-doped nixies,,,

I notice in the Burroughs Bulletin N101 Nick posted that the block diagram on page 2 shows a core memory! Reference in the text to the recirculation loop leaves no doubt. I'm curious to know if anyone has ever seen a Nixie instrument with a core memory? Presumably they must have existed

[neonixie-l] Re: Four CD27's on eBay again.....

https://lh4.googleusercontent.com/-Rm3RaXGYkcs/U040lK3pWfI/AIc/9Lcz8hEWZeA/s1600/P1010675.jpg https://lh6.googleusercontent.com/-i7r0-PwKwl8/U040g0gUHwI/AIU/X_A2mLw9q4w/s1600/P1010674.jpg Oh yes, the photo is genuine. Here are a couple of hi-res pics for future reference. A

[neonixie-l] Re: Trigger clock revisited

Last word on the trigger clock, from me anyway: Upping the anode resistors to 43k didn't work as expected. I finally settled on the optimum value at 30k. I swapped the 50 minute tube with its associated nixie driver tube. The ring counted just fine but the '5' never went out - the tube was WAY

[neonixie-l] Re: Whatbox

Let's apply some engineering to see what kind of battery would do the job. Assuming a neon strikes at 90V and extinguishes at 60V, the average voltage across the resistor would be 15V. Initially, I arbitrarily choose the series resistor to be 1M and the capacitor to be 2.2nF. The flash rate

Re: [neonixie-l] Re: Whatbox

Wow, it's been a while since I saw one of those. These are better value - 75V in this pack for $3. But you'd have to make a holder. http://www.ebay.com/itm/50pcs-x-AG13-G13-L1154-LR44-SG13-357-A76-303-GP76-Button-Cell-Coin-Battery-T7-/121208181765?pt=US_Single_Use_Batterieshash=item1c38921405

[neonixie-l] Re: Touch sensitive Nixe?

You should probably un-bin it and run it for a couple of days before doing anything so rash. I brought up a set of B6091s this week that had been sitting in a box for years. One of them worked. On the others, some cathodes wouldn't light, some struck at the pins but not the numeral, one

Re: [neonixie-l] Re: Trigger clock revisited

Oooh, those are sterilizing wavelength. They could erase an EPROM and do some damage to your eyesight. -- 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

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