Re: [neonixie-l] Re: Maybe a stupid question...

2016-08-21 Thread karl welty
With the parts order having arrived I was able to hook up the circuit per my idea. It works exactly as I hoped it would. Thousands (seemingly) of variations based on the settings of the pots. It outputs a changing voltage right in the range of the intended VCO I plan to have downstream. Initial

[neonixie-l] Re: Constant current regulator for Nixies

2016-08-21 Thread gregebert
Generally, the '1' is actually two parallel wires,so it's comparable in length to the other numerals. Datasheets for segmented displays clearly show different currents for various segments, but I have not seen that for full-formed nixies (eg, 10 cathodes for 0-9) -- You received this message

[neonixie-l] Re: Constant current regulator for Nixies

2016-08-21 Thread 'jf...@my-deja.com' via neonixie-l
On Saturday, August 13, 2016 at 5:45:22 PM UTC-7, ZY wrote: > > ...maybe some regulation circuitry would be worth it in the long run? > > If you do this, you might want to modulate the current proportional to illuminated length of each character, so an 8 would draw more current than a 0 and

[neonixie-l] Re: Constant current regulator for Nixies

2016-08-21 Thread gregebert
For anode-side, I use a PMOS device (see attached picture). The current is set to (PRDV-Vgs)/R7. You can get Vgs(on) from the datasheet, usually it's around 4V for higher-voltage PMOS devices. The PDRV signal generated from a potentiometer and a small 12V DC-DC converter; adjust it to obtain

[neonixie-l] MOD-SIX GPS Repeater

2016-08-21 Thread Jack Buechler
I have a spare GPS Repeater Version 1 – does any one need one? Let me know From: on behalf of ZY Reply-To: "neonixie-l@googlegroups.com" Date: Sunday, 21 August 2016 at 11:09 To: neonixie-l

[neonixie-l] Re: Constant current regulator for Nixies

2016-08-21 Thread ZY
What is your method of current regulation? For example, do you use a PnP transistor or the lm317 method, or something else? I have room to add something for my anodes, but I'm unsure if using a transistor would be accurate. On Sunday, 14 August 2016 03:02:17 UTC-4, gregebert wrote: > > I use

[neonixie-l] Re: Burroughs Panaplex II clock display...

2016-08-21 Thread taylorjpt
I have a pile (~1K) 11 digit calculator displays and eventually settled on a 0.5mm thick double sided translator board installed with conductive epoxy. The connection now becomes a simple DIP header: http://www.ebay.com/itm/140729423185 I remember having a bag of the clips back in the '80s and