Re: [neonixie-l] Re: 14-digit nixie calculator project with clock function

2022-10-03 Thread 'MrNixie (UK)' via neonixie-l
Hello, I have been thinking about having a stab at a nixie calculator myself! My stumbling block was the keys (specifically, the key caps). What is your source for these? On Monday, 3 October 2022 at 08:58:58 UTC+1 newxito wrote: > No worries, this is a strictly limited edition, this thing is

[neonixie-l] Re: Paging Lawrence Wilkins...

2020-09-27 Thread MrNixie (UK)
Rumours of Mr Wilkins' demise are, I am pleased to report, somewhat premature! Alive and well, and reporting in. Having some short term problems with my email address laurence.wilk...@dsl.pipex.com (ever since Pipex sold out to TalkTalk - downhill all the way :( ) Laurence On Saturday, 26

[neonixie-l] Re: Cyclox II clock tube

2019-10-16 Thread MrNixie (UK)
It certainly is! :) Laurence Creator, Designer, Builder and Seller of around 250 CYCLOXes, worldwide. -- 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

Re: [neonixie-l] Re: Careful what you use to power your nixies...

2014-09-02 Thread MrNixie (UK)
The only thing you can safely assume with cheap goods from China, is that the seller is interested in your dollar, not your life. A not-foolproof test is simply to feel the weight of a charger body in your hand, when compared to a known, good (original equipment) specimin. The fake will often

[neonixie-l] Re: IN-18 Tubes - Best place to get from?

2014-02-26 Thread MrNixie (UK)
Unless you've not turned the TV on for the last six months, you'll know that the Ukraine is in a state of some confusion, right now. The country is very split about its own future. This is MIGHT have an impact, somehere, on the chain of money/goods flowing from some parts of that country, to

[neonixie-l] Re: IN-18 Tubes - Best place to get from?

2014-02-26 Thread MrNixie (UK)
Well, Petro, I am truly glad to hear that! I really hope that things work out for the country On Tuesday, 25 February 2014 15:16:45 UTC, Paul Parry wrote: Hi all, As someone quite new to Nixies, where would you recommend the best place to get some IN-18 tubes from? Direct from somewhere

[neonixie-l] Re: Math wizzards....

2014-02-23 Thread MrNixie (UK)
Bill, not unlike this one here, then! :) (my own design, of some five years back) http://www.youtube.com/watch?v=WgFVbnZrwYg I used a lookup table which the software consults at regular time intervals, once per display multiplex cycle, which was about every 6mS from memory. The table had

[neonixie-l] Re: Found a drawerful of 7441s!

2013-10-03 Thread MrNixie (UK)
Yeah, be careful with those ones, David. They look like the lower voltage types. -- 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: Fascinating ebay sale ... apparently IN-18 production gear!

2013-05-09 Thread MrNixie (UK)
Lend me your bargepole - I wouldn't touch this deal with my own! This doesn't stack up. You are only going to need one piece of don't-know-how, and you would be completely stumped, I reckon. Of course, this item has appeared on eBay before (was it with the same seller?), and it didn't sell

[neonixie-l] Re: Nixie Pinball Display - Schematic feedback

2013-02-08 Thread MrNixie (UK)
Hello Zitt, first of all, this sounds like an interesting and worthwhile application for nixie tubes! You are to be congratulated on that. I am not saying your design wont work, but you've asked for comments, so here are mine... I do feel that you may have over complicated the LED drivers a

[neonixie-l] Re: Help needed to design Swithmode step-up converter, this time not so Nixie-related

2012-11-27 Thread MrNixie (UK)
BARBEQUE?? That came out of my fingers as Because... On Tuesday, 27 November 2012 19:30:50 UTC, MrNixie (UK) wrote: Hmm, I think you need to give us a bit more info - your proposed circuit, supply voltage, etc. The mosfet and inductor won't complain much at 100C, but your LEDs might start

[neonixie-l] Re: Art imitates life?

2012-03-06 Thread MrNixie (UK)
The artist is catherine.pal...@bt.com drop her a line if you like! Laurence On Mar 5, 11:55 pm, coggs bob.coggesh...@gmail.com wrote: Beautiful. Is there a  direct face-on set of renderings ? Would love to use these and link to her site. On Mar 5, 4:11 pm, MrNixie (UK) laurence.wilk

[neonixie-l] Art imitates life?

2012-03-05 Thread MrNixie (UK)
Good evening all, a past customer of my nixie clocks has an active interest in detailed computer image rendering of objects that take her interest. Latest object to receive the treatment is the glorious IN18 nixie tube. Just think - even when the last IN18 is gone, we'll still have these...

[neonixie-l] Re: Dallas/Maxim TCXO question

2012-02-26 Thread MrNixie (UK)
Well, as I said earlier, two separate batches of these chips were each remarkably close to one-another, and all a tad slow, as it happened. Uncallibrated, my batches might loose 30-60 seconds per year, IMO. I am sure the manufacturing process includes some sort of hardware/laser trimming

[neonixie-l] Re: Dallas/Maxim TCXO question

2012-02-23 Thread MrNixie (UK)
Michel, no 100Hz output I am afraid, since the on board (embedded) crystal is 32.768KHz and of course 100Hz is not a sub multiple of this. 8.192KHz, 4.096KHz, 1.024KHz or 1Hz (which is what I use to interrupt the processor, and collect the latest time). The resolution of the on-chip ageing

[neonixie-l] Re: Dallas/Maxim TCXO question

2012-02-22 Thread MrNixie (UK)
Well, as a designer and manufacturer of nixie clocks which incorporate the fine Dallas 3231 Extremely Accurate on board TXCO RTC, I never have my own clocks running for more than a few weeks before I've pulled them to tinker with either the software or hardware! Instead I have to relay on reports

[neonixie-l] Re: hello from new guy

2011-12-28 Thread MrNixie (UK)
Brian, you might be tempted to run a couple of small NE2 colon bulbs in series, but you will probably find that their combined strike voltage is higher than your HT power supply - either straight away, or after a few months of bedding in. They just stop working! So, run the neons (each with their

[neonixie-l] Re: Old IN-18's !

2011-12-26 Thread MrNixie (UK)
You are making me blush :) Running partial fail IN18's at up to 15 mA for several hours will SOMETIMES resurrect or part restore them, but I have not yet found this to be a long term solution. YMMV of course. At least, during this process, you can read a book (possibly even get a TAN) from the

[neonixie-l] Re: Internal cathode short-circuit?

2011-12-18 Thread MrNixie (UK)
Here's an even more exciting way of (sometimes!) reinvigorating a shorted tube. Chances are that a piece of debris or bent/moved wire has bridged two of the Cathodes. You should be able to find which two, by going around the base of the nixie tube, testing for any continuity (may be a short, or a

[neonixie-l] Re: MC34063 component choice for +475V @ 50mA output, help needed!

2011-11-21 Thread MrNixie (UK)
Jeepers, Buddy! 475V at 50mA? Did you check your life insurance? Not popular for supplies in the few-watts range, but if you need this sort of power maybe a valve amp transformer is going to be your better bet? -- You received this message because you are subscribed to the Google Groups

[neonixie-l] Re: 555 based HV supply question

2011-11-21 Thread MrNixie (UK)
No doubt these 555 power supplies can work, but the efficiency can be poor, and there is no current overload protection. If you can live with the extra wasted power (means a heat sink, for your numbers) and can trust yourself never to short the power supply out, then these circuits will deliver.

[neonixie-l] Re: Mostek MK50250N chip and using it for nixie or VFD clocks.

2011-10-22 Thread MrNixie (UK)
Hello, That chip uses upside down (i.e negative 12V) supply, so you have to keep your wits about you! I suggest that it is a non-starter for nixie conventional tubes, as its output is designed for a seven segment display. At a push, you might be able to design something to drive seven segment

[neonixie-l] Re: Disposable camera as power supply

2011-10-22 Thread MrNixie (UK)
with bigger wattage? Thanks On Oct 9, 8:17 pm, MrNixie (UK) laurence.wilk...@dsl.pipex.com wrote: That little simple 555 circuit is fairly standard and basic, and will work. It wont give top performance, but who cares?  Stick closely to the advised components, particularity for the main

[neonixie-l] Re: Disposable camera as power supply

2011-10-09 Thread MrNixie (UK)
or later you will do this! Alas, I know this... :( Laurence (AKA MrNixie, UK) On Oct 9, 3:08 am, John Rehwinkel jreh...@mac.com wrote: I've just got my IN-14 tubes and started experimenting on my first nixie project - the clock, of course! For now I am using a disposable camera as my power

[neonixie-l] Re: Disposable camera as power supply

2011-10-09 Thread MrNixie (UK)
, and for that kind of money I can make 5 of thesehttp://www.ledsales.com.au/kits/nixie_supply.pdf,and still have a lot of spare parts! Does anyone have any experience with these? Are they alright? Thanks again! On Oct 9, 6:25 pm, quot;MrNixie (UK)quot; lt;laurence.wilk...@dsl.pipex.comgt; wrote: gt

[neonixie-l] Re: Large VFD 7 x 9 dot matrix displays not as they seem???

2011-07-19 Thread MrNixie (UK)
Thanks to everyone for their replies. Speaking as someone who DOES know a thing or two about driving multiplexed nixie and VFD displays (several hundred such clocks sold), I can now confirm that, if these items are not exactly duds, they are NOT capable of being driven in a 7x9 addressable display

[neonixie-l] Re: Large VFD 7 x 9 dot matrix displays not as they seem???

2011-07-18 Thread MrNixie (UK)
would make a really cool word clock...shame to hear that they might be defective...can you return them (I know it's a hassle..). Nick On Mon, Jul 18, 2011 at 12:44 PM, MrNixie (UK) laurence.wilk...@dsl.pipex.com wrote: Hmm - I might have just made an expensive mistake (or just

[neonixie-l] Re: PicKit 3

2011-07-17 Thread MrNixie (UK)
Hello, what about this from the UK? http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItemitem=150464234759 Or even this one from China. Half the price, twice the risk! Take your pick (PIC?)

[neonixie-l] Re: Keeping your clock accurate

2011-06-02 Thread MrNixie (UK)
See how active this thread is, and how many options you have! My two cents (sorry - pence) Longer term (days, weeks), a mains referenced clock will be your best bet - your utility suppliers see to that in the longer term, for the benefit of the many MILLIONS of legacy mechancial devices that

[neonixie-l] Re: Keeping your clock accurate

2011-06-02 Thread MrNixie (UK)
CORRECTION! TXCO stands for Temperature COMPENSATED Crystal Oscillator - NOT Temperature CONTROLLED one. The chip uses no power to control the temperature, it merely compensates the crystal capacitors to ALLOW for it. Must read own notes before hitting send - sorry. On Jun 2, 10:01 am, MrNixie

[neonixie-l] Re: Appropriate duty cycle for IN-12s and similar Nixies?

2011-06-02 Thread MrNixie (UK)
Robert, I forecast a lively discussion, here! Many people will have their own views. David Forbes' comment about life expectancy being a function of the CUBE of the current is new to me, but I have no reason to doubt it. I get the feel that driving the tube 1:6 is just too much, but that 1:3 or

[neonixie-l] Re: Supertex HV7022

2011-05-29 Thread MrNixie (UK)
I spoke to a technical guy at Supertex in the UK a few months back. He said that they were working on a 5V version, though I haven't seen or heard any further. There are other reports that these devices will actually run fine from 5V, rather than 12V, logic levels, though I haven't tried this

[neonixie-l] Re: Supertex HV7022

2011-05-29 Thread MrNixie (UK)
Just one other thing - if anyone DOES try running these current generation Supertex chips at 5V rather than 12V, it is very likely that they will only do so at a somewhat lower clock speed. Don't expect to pump 8MHz into them at these low voltages! LW On May 29, 10:13 pm, kosbo.com

[neonixie-l] Re: Ghosting on IN-14s even with long blanking period.

2011-02-07 Thread MrNixie (UK)
circuit, I saved the IRF740 in case I needed to switch a bigger load. On Feb 6, 5:40 am, MrNixie (UK) laurence.wilk...@dsl.pipex.com wrote: Will, This is the point (in case you hadn't noticed!) when a 'scope comes in real handy! You really want to pursue that - I use mine a lot

[neonixie-l] Re: Ghosting on IN-14s even with long blanking period.

2011-02-06 Thread MrNixie (UK)
Will, This is the point (in case you hadn't noticed!) when a 'scope comes in real handy! You really want to pursue that - I use mine a lot for fault finding my designs! It will pay for itself in your time, Teach you loads and reduce frustrations. I think your issue is not an AC (i.e. transistors