Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Bubble light thread coming up in a bit. I'll move this topic to that... > On Nov 28, 2022, at 11:32 AM, Nick Andrews > wrote: > > I have a few of both types. One string of the Silvestri 70s/80s-produced > smaller ones that run on a typical smaller-socket light

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

I have a few of both types. One string of the Silvestri 70s/80s-produced smaller ones that run on a typical smaller-socket light string (box looks like old K-Mart style printing). You can find them on ebay sometimes relatively inexpensively. These are a spherical holder that the glass vial

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

> On Nov 20, 2022, at 8:14 AM, Adrian Godwin wrote: > > Are they these bubble lights ? > > https://www.youtube.com/watch?v=qTDtyFaAZy8 > Yes. I'll make a detailed post about them later today. They're quite interesting and have a history to

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

22 11:08 AM > *To:* neonixie-l@googlegroups.com > *Subject:* Re: [neonixie-l] Any interest in IV-9 numitron clock kit? > > > > Yeah. Apparently they still make them, too. > > > > On Sun, Nov 20, 2022, 7:14 AM Adrian Godwin wrote: > > Are they these bubble l

RE: [neonixie-l] Any interest in IV-9 numitron clock kit?

. Michail From: neonixie-l@googlegroups.com On Behalf Of Nick Andrews Sent: Sunday, November 20, 2022 11:08 AM To: neonixie-l@googlegroups.com Subject: Re: [neonixie-l] Any interest in IV-9 numitron clock kit? Yeah. Apparently they still make them, too. On Sun, Nov 20, 2022, 7:14 AM Adrian

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Bill, I just read the article on nuts and volts, looks nice! I must have misread the IV-9 datasheet initially.. I didn't see it listed values up to 4.5v. The 3.15v it refers to may just be a mid point nominal value or something. Looks like you are driving the tubes at 5v. The optional jumper

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Yeah. Apparently they still make them, too. On Sun, Nov 20, 2022, 7:14 AM Adrian Godwin wrote: > Are they these bubble lights ? > > https://www.youtube.com/watch?v=qTDtyFaAZy8 > > > On Sun, Nov 20, 2022 at 1:07 PM Mike Mitchell wrote: > >> >>> Terry, I remember those bubble lights at

RE: [neonixie-l] Any interest in IV-9 numitron clock kit?

I made an IV-9 based clock some years ago which was featured in the Nuts & Volts magazine September 2016. I used 4511 BCD to seven segment decoders with latch function to drive the tubes directly. An HC164 shift register is clocked by a mpu to make sure the data gets to the correct tube. The

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Hi I've been designing an IV-9 alarm clock using all 4xxx CMOS. With little IV-9 experience ( I only have a one digit IV-9 clock that is working ) I'm adding a motion sensor and PWM brightness in the hopes it will extend the life of the filaments. I'd be interested in one of your clocks.

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Are they these bubble lights ? https://www.youtube.com/watch?v=qTDtyFaAZy8 On Sun, Nov 20, 2022 at 1:07 PM Mike Mitchell wrote: > >> Terry, I remember those bubble lights at grandparents farm. I had >> started to look into buying some many years ago, but never did... >> >> >> -- You

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

I might be interested. I have a small supply of iv-22 tubes and some of the iv-4/17 alphanumeric ones too. Terry, I remember those bubble lights at grandparents farm. I had started to look into buying some many years ago, but never did... On Wed, Nov 16, 2022, 4:26 PM Moses wrote: > Hi

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Mark, Interesting info, thank you! What is your voltage and filament current? Regards, -Moses On Friday, November 18, 2022 at 12:21:21 PM UTC-8 Mark Moulding wrote: > I usually drive the filaments non-multiplexed from 74HC595 shift registers > (technically slightly out of spec, but have

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

I usually drive the filaments non-multiplexed from 74HC595 shift registers (technically slightly out of spec, but have always worked fine), and use the output enable line to PWM all of the displays at once for brightness control. I run a separate PWM on each filament that's off, keeping it

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Mark, Going to try these posts again, not sure why they are getting deleted. Hope this makes it through. Good to hear on the IV-9 durability.. I've never ran them other then briefly on the bench. The specs on the IV9 show 3.15v and 20ma or so for the segments, which I believe may be

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Trying to reply to the rest of the posts.. but something is deleting my replies as soon as I post them :/ Will try again later. On Thursday, November 17, 2022 at 1:00:50 PM UTC-8 Moses wrote: > Michail, > > Thank you for your feedback! I was talking with a friend of mine and we > seem to come

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Michail, Thank you for your feedback! I was talking with a friend of mine and we seem to come to the same conclusion about reliability. The specs seem to under rate the drive on these tubes, may be one reason they last so long. Here is the last clock design: http://neonixie.com/Z57XM6DV2/ A

Re: Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

> On Nov 17, 2022, at 1:48 PM, gregebert > wrote: > > Constant-current is an excellent approach for incandescent devices because it > eliminates the inrush current-surge that shortens the life of the filament. > Recall that a cold filament has lower resistance

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

I've built quite a few devices using the IV-9 tubes, and found them to be extremely durable. (I probably wouldn't be interested in a clock kit, as I have about 3500 tubes in stock...) If operated below their maximum operating parameters (dimmed a little, and soft-started filaments), they'll

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

Hi there. I'd be potentially interested in a numitron kit! On Wed, Nov 16, 2022 at 5:26 PM Moses wrote: > Hi Everybody, > > I seem to have enough IV-9 tubes to where I can produce a batch of 100 or > so 6 digit numitron clocks. Thinking ESP32 powered like my last one (Thank > you to all those

RE: [neonixie-l] Any interest in IV-9 numitron clock kit?

I have been making numitron projects. Namely Bitcoin tickers that run a live stream of the price (tubes constantly changing digits since the prices changes 24 hours a day by the second). So, well over 2000 tubes out there and I offer free repair/warranty meaning people are apt to contact me