Re: [neonixie-l] Green neon bulbs - Anyone interested in 100 or more ?

2015-02-26 Thread Joe Croft
Wow, sadly I bought as many as I will need for a while. I would've liked your length more. Mine are about half that size. -joe On Thu, Feb 26, 2015 at 5:08 PM, gregebert wrote: > I will be placing an order for NE-2G bulbs in a few days, and wanted to > know if anyone here is interested in obtai

[neonixie-l] Green neon bulbs - Anyone interested in 100 or more ?

2015-02-26 Thread gregebert
I will be placing an order for NE-2G bulbs in a few days, and wanted to know if anyone here is interested in obtaining some. They are 8mm diameter x 18mm long. The minimum purchase is 1000 bulbs, and I only need about 400. My cost is about $190 US for 1000 bulbs. ($150 for bulbs, $40 shipping to

Re: [neonixie-l] Re: Russian 100x100 array

2015-02-26 Thread Terry Kennedy
On Thursday, February 26, 2015 at 9:32:00 AM UTC-5, Mike Mitchell wrote: > > I've seen similar Russian VFD panels on Ebay: > > > http://www.ebay.com/itm/MONSTER-UNIQUE-GIANT-ULTRA-RARE-BIG-VFD-DIGIT-MATRIX-DISPLAY-TUBE-USSR-CLOCK/261694839768 > > http://www.ebay.com/itm/MULTI-COLOR-MONSTER-UNIQUE-G

[neonixie-l] Wanted: Nick DeSmith SMPS board.

2015-02-26 Thread RHC
Hi Im looking for a Nick Desmith smps board http://desmith.net/NMdS/Electronics/NixiePSU.html preferably stuffed, but will take a blank. If you have one you would be willing sell please private email me. thanks Bob -- You received this message because you are subscribed to the Google Group

Re: [neonixie-l] Re: Multiplexing noise

2015-02-26 Thread Joe Croft
Hi Pete, I like it. I will give this a try. -joe On Thu, Feb 26, 2015 at 3:12 AM, petehand wrote: > 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 coll

Re: [neonixie-l] Re: Russian 100x100 array

2015-02-26 Thread Mike Mitchell
I've seen similar Russian VFD panels on Ebay: http://www.ebay.com/itm/MONSTER-UNIQUE-GIANT-ULTRA-RARE-BIG-VFD-DIGIT-MATRIX-DISPLAY-TUBE-USSR-CLOCK/261694839768 http://www.ebay.com/itm/MULTI-COLOR-MONSTER-UNIQUE-GIANT-ULTRA-RARE-BIG-VFD-DIGIT-MATRIX-DISPLAY-TUBE/251754583859 They use some interest

Re: [neonixie-l] Re: Multiplexing noise

2015-02-26 Thread 'Terry S' via neonixie-l
Pete, that's a nice application for the cascode circuit... Help me understand how it eliminates concerns about dead time and ghosting. Terry On Thursday, February 26, 2015 at 3:05:55 AM UTC-6, petehand wrote: > >

Re: [neonixie-l] Re: Multiplexing noise

2015-02-26 Thread petehand
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

2015-02-26 Thread petehand
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 ex