23 Jul
2016
23 Jul
'16
10:36 a.m.
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