Re: [neonixie-l] Re: Burroughs DC105 Nixie Tube Counting Module

This interested me enough that I researched it as well... Pretty cool actually how it worked and it sure didn't look cheap even by standards back then! -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop

Re: [neonixie-l] Re: Burroughs DC105 Nixie Tube Counting Module

Thank you to everyone who posted information and/links. Shaun M Sent from my iPad6 No Regret > On May 1, 2019, at 07:40, Richard Katezansky wrote: > > I have a DC-106 that I was able to get up and running 5-6 years ago using > some information that I scraped from the web at the time.

Re: [neonixie-l] Re: First nixie clock: do I need to switch anode?

I agree. I can't help thinking that for a first clock a 9/12vdc powered design using a known HV module seems to offer the safest option for people without line voltage experience. David On Thu, 2 May 2019, 22:01 gregebert, wrote: > I dont recommend line-operated designs unless you've done

[neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

I meant to say "humiliating" -- 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

[neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

I've done a fair amount of work with flyback converters, or minor variants. The other circuit looks like some kind of self-oscillating topology, and I have not done anything with those other than build a Radio Shack kit with one back in the early 1970's. I really wish manufacturers would

[neonixie-l] Re: First nixie clock: do I need to switch anode?

I dont recommend line-operated designs unless you've done some previous design work at high-ish voltages. There are a lot of not-obvious things that go wrong (line noise, transients, component failure, inadequate isolation) with very bad consequences. If you have done a lot of past designs, I

[neonixie-l] Re: First nixie clock: do I need to switch anode?

Interesting. What about a ceramic capacitor? For example, there is this 400V AC X2 cap on digikey, though quite large at almost 25mm diameter. On Thursday, May 2, 2019 at 2:06:25 PM UTC-4, Dekatron42

[neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

W dniu czwartek, 2 maja 2019 20:54:25 UTC+2 użytkownik gregebert napisał: > > Sounds like your transformer is saturating; common problem with small > magnetics. > > I used an LPR6235-123 from Coilcraft in my wristwatch. They sell to > end-users in small quantities, which is nice. > Even though

[neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

FYI: This was the transformer I was using. The saturation current is 0.7A. On Thursday, May 2, 2019 at 2:54:25 PM UTC-4, gregebert wrote: > > Sounds like your transformer is saturating; common problem with small > magnetics. > > I

[neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

One Idea whould be trying to use the LT8580, there is an appnote about using it as a VFD Tube supply. Sure, you would need a second dcdc to reach 9V, but those are super tiny nowadays. Could possibly fit on a 17mm board -- You received this message because you are subscribed to the Google

Re: [neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

I could send you a bunch of the 31105 transformer that I use in my Nixie watch with the LT1308B. They are available from Wurth in large quantity, but no longer a stocked item. On Thu, May 2, 2019, 11:54 AM gregebert wrote: > Sounds like your transformer is saturating; common problem with small

[neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

Sounds like your transformer is saturating; common problem with small magnetics. I used an LPR6235-123 from Coilcraft in my wristwatch. They sell to end-users in small quantities, which is nice. Even though it only ran for 7 seconds at a time, it still overheated at 7mA load but it's a

[neonixie-l] Re: First nixie clock: do I need to switch anode?

One thing about the type of power supply that relies on a capacitor in the manner that the clock design in the link from www.dos4ever.com is that the capacitor will degrade over time for every voltage spike on the mains, this is as designed by the capacitor manufacturers but it also means that

[neonixie-l] Suggestions for a LiPo powered nixie power supply design?

One project I have on the back burner is a very small battery-powered nixie display. I thought that a variation of a power supply design that I had been using for everything else, would work fine. It turns out that the prototype of the power supply, which I had built a few years back, only

[neonixie-l] Re: First nixie clock: do I need to switch anode?

I had seen that article before, but its significance to several of my interests hadn't really sunk in. Recently I have become more and more obsessed with power supplies and time bases. My father-in-law was an accomplished engineer. After retirement he sold various electronic gadgets, one of

[neonixie-l] Re: First nixie clock: do I need to switch anode?

That is a one tube clock. You don't need to switch the anode. On Thursday, May 2, 2019 at 10:43:20 AM UTC-4, gregebert wrote: > > Switching the anodes is what multiplexing does, the advantage being that > you can share the cathode logic across several tubes. But with savings, > there is also a

[neonixie-l] Re: First nixie clock: do I need to switch anode?

Switching the anodes is what multiplexing does, the advantage being that you can share the cathode logic across several tubes. But with savings, there is also a hidden cost: You must run the anode current higher for multiplexed operation versus direct-drive. If the tube is specifically

[neonixie-l] First nixie clock: do I need to switch anode?

I want to build a nixie clock similar to this one: https://www.dos4ever.com/TiT/TiT.html I will supply HV to the anode of each tube (through a current-limiting resistor), and switch the cathodes using BJTs. The BJT's bases will be connected to a microcontroller's output through resistors. I