Nova 3 front panel

[Henk Gooijen]

Ahhh, thanks Ray. I still need to replace several bulbs of my NOVA3 console.

Somebody knows of a source for 28V 40 mA “grain” bulbs with wires?
I could use some 10 … and 20 as spare 😊

BTW, I read somewhere that the bulb to LED replacement is not as
straight-forward as you may think. The small continuous current through
the bulbs (to prevent thermal shock)  is enough to make LEDs appear
continuous on!


-          Henk.



Van: Bruce Ray<mailto:Bruce at Wild-Hare.com>
Verzonden: vrijdag 22 juli 2016 20:16
Aan: General Discussion: On-Topic and Off-Topic Posts<mailto:cctalk at classiccmp.org>
Onderwerp: Re: Nova 3 front panel

DG generally used 28V, 0.040 Ma (nominal), fragile wire-lead
incandescent bulbs for the Nova/SuperNova/Nova2/Nova3 front panels as
well as the early Eclipses.  The S/130 was DG's first LED-based front
panel and was much-appreciated by Field Service.

More followup off-list...

Bruce



On 7/21/2016 10:53 PM, jim stephens wrote:
> Is there anyone with documents on the Nova 3 front panel, and what
> drives it?  It has some number of custom DG chips, which hopefully are
> good if I want to try to fire it up to play, but am interested in that
> on good authority there are 28v incandescent lamps.
>
> A friend has an Eclipse front panel with nearly identical bezel, which
> has LED's and a number of differences in the logic (different connector
> to the system, for instance).  So it is probably all run on 5v.
>
> I have not had time to figure out the driver circuit for any of the
> lamps to see what that may turn up, and wanted to know whether it was
> 28v lamps before I buy 40 of them.  (the thing has only 2 out of a lot
> of lamps).
>
> Thanks
> Jim