Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

I spin quite a few PCB designs at present where I work, using the latest incarnation of Orcad (very much a love / hate relationship). A few years ago when I was starting out at a (different) company with Orcad, I opted for "Arc" routing rather than the conventional 45/90 degree modes and had a

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

A good time ago, I spent 10 years with a PCB producer as an equipment technician and saw everything from railroad tracks down to 4x4 tracking, from single sided to 24 multilayer boards, from boards for key fobs to guidance boards for Exocet in that time. I had almost forgotten everything in

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

John, There's probably little I can teach you, it sounds like you are a seasoned designer as well. But for the group, here is some of what I see on the eval board that would not pass muster today. 1) Mid trace T's. Also off-angle T's in particular. These are frowned upon, especially in modern

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

> In the early 80's I was doing 8 mil lines & spaces, getting two traces > between pads on .1" spacing. It was pushing the limit of the local board > houses. It was also just the ticket for high speed memory boards for a couple > decades, until the DDR stuff came along. Now 6 mil is considered

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

I am sure you are right -- notice some of the odd angles and mixed 45/90s. Also notice the very poor registration of the holes to pads. In the early 80's I was doing 8 mil lines & spaces, getting two traces between pads on .1" spacing. It was pushing the limit of the local board houses. It was

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

I'm certain it's a "tape-and-donuts" PCB layout. The first CAD-developed PCB's I saw in the 1980's had telltale 45-degree bends everywhere, and everything else was perfectly orthogonal. Notice there are no traces going between 0.1"-spaced pads, due to the primitive manufacturing capabilities

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

Thanks, Jon! BTW - does anyone know of a source for connectors for these, or how to make one? On Tuesday, August 16, 2016 at 1:44:55 PM UTC-5, Jon wrote: > > Care to share pictures / schematics with the rest of the list? >> >> I have some of those displays (Vishay-branded) and would like to

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

Thanks Jon! /Martin -- 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 to

Re: [neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

On 15 Aug 2016, at 01:04, Jon wrote: > > > Hi Martin, > > Just so happens I have an original evaluation kit for this display... :) You > have mail. Care to share pictures / schematics with the rest of the list? I have some of those displays (Vishay-branded) and would

[neonixie-l] Original evaluation PCB for the Burroughs BG12205-2 bar graph displays?

Hi, Has anyone seen the original evaluation PCB for the Burroughs BG12205-2 bar graph displays? I have the evaluation/design example circuit diagrams from different datasheets but I would like to know if anyone has the original PCB before I start to draw one myself. I am not interested in