[neonixie-l] Rodan CD47/GR414

What woukd be a realistic price for this tube. Tested and in original packaging. Unused. Thank you -- 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+unsu

[neonixie-l] Re: Rodan CD47/GR414

If it goes on Ebay, bidding will likely go up to 1500 to 2000 USD. This is an enormous tube and very rare. On Wednesday, December 9, 2020 at 8:27:38 AM UTC-8 Wo Tu wrote: > What woukd be a realistic price for this tube. Tested and in original > packaging. Unused. > Thank you > -- You receive

[neonixie-l] Re: Rodan CD47/GR414

Thank you gregebert gregebert schrieb am Mittwoch, 9. Dezember 2020 um 17:38:23 UTC+1: > If it goes on Ebay, bidding will likely go up to 1500 to 2000 USD. This is > an enormous tube and very rare. > > > On Wednesday, December 9, 2020 at 8:27:38 AM UTC-8 Wo Tu wrote: > >> What woukd be a realist

[neonixie-l] Something Fun for the Holiday Season (ZM1350s)

Enjoy! ZM1350 Display - Merry Christmas! Driving Home for Christmas - YouTube Mahdi -- 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, s

Re: [neonixie-l] IV-6 background variations

On Mon, Dec 7, 2020 at 6:52 PM Nicholas Stock wrote: > I have a lot of IV22 VFDs and IV4/17's. The differences in the backgrounds > can be quite varied from what I've seen.I don't think they were > particularly bothered by it for their intended use case (behind a filter)? > Indeed Nick. Or a

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

I just wanted to share something that happened to me yesterday. I killed the ESP32 on my nixie board just by touching the adjustable voltage regulator IC with one finger. I’m pretty sure that I touched the feedback pin causing the voltage to increase. I already changed the design, and, in the f

Re: [neonixie-l] Rodan CD47/GR414

Holy donkey festival, Batman, those things are enormous! On Wed, Dec 9, 2020 at 10:27 AM Wo Tu wrote: > What woukd be a realistic price for this tube. Tested and in original > packaging. Unused. > Thank you > > -- > You received this message because you are subscribed to the Google Groups > "neo

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

Or it could have been ESD; winter time is notorious for low humidity (dry air), so it's much easier to accumulate a dangerous charge. All of my larger boards have a banana jack that has a 1 meg resistor to GND, and I either plug my wrist strap into the jack when I'm bagging/unbagging the board

Re: [neonixie-l] Rodan CD47/GR414

http://www.nixie.dk/~jthomas/nixzilla.html On Wed, Dec 9, 2020 at 12:00 PM Nick Andrews wrote: > Holy donkey festival, Batman, those things are enormous! > > On Wed, Dec 9, 2020 at 10:27 AM Wo Tu wrote: > >> What woukd be a realistic price for this tube. Tested and in original >> packaging. Unu

[neonixie-l] IN-16 without Neon but with Argon

Hello. As I said in the IV-6 thread, I bought some apparently dead IN-16 that react to a Neon tester (HVAC) with a violet/lavender glow. Since there is gas, it will light up one way or another! This is the promising result with 632 Vdc at about 9 mA: https://youtu.be/NfKj6_Kf8DE (color does not m

[neonixie-l] Re: IN-16 without Neon but with Argon

I still think the tube has leaked. 600V is a lot of voltage, and it's going to get pretty warm at 9mA. >From Paschen's curve, the ionization voltage is at a minimum at a certain pressure, around a few mBar. At pressures above AND below that point, the ionization voltage increases. As a tube lea

[neonixie-l] Re: IN-16 without Neon but with Argon

That's pretty cool that it somewhat lights up. However I think that you're mistaken in your assumption that the neon has escaped, leaving only argon in there. The gas mixture in a Nixie tube is at a very low pressure, so my guess is that atmospheric air has leaked into the tube, thus increasing

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

The voltage feedback resistor is a low impedance node on every voltage regulator design that I have worked with. Typically 1k ohm. I don't see how that could happen. On Wed, Dec 9, 2020, 12:30 PM newxito wrote: > I just wanted to share something that happened to me yesterday. I killed > the ESP

Re: [neonixie-l] SP-101 Clock, finshed at last!

Nice find indeed - specifically, right now i am designing for SP-353 and SP-352 though the concept would work for other displays of similar size. I note that you have some 4 digit - from your photo it looks like they are labelled SP-356 - I have not got a design for those but could come up with