7 Sep
2014
7 Sep
'14
9:52 a.m.
In any event, I'll be out of town for a while. When I return, it will be
time to button-up the Altair project - hook up a power switch, finalize the
board / chassis grounding scheme, complete the lead dress & routing,
fabricate original-style expanded metal screens to cover the connector
slots in the case, install the fan, front panel and case, etc.
You know, all of the "fun & easy" stuff that doesn't require scopes,
probes, datasheets and hours of troubleshooting.. the i-dotting, t-crossing
detail work that really makes the job all proper and workmanlike, and sets
it apart from so many carelessly assembled kits and poorly-executed
"restorations".
At that time, I'll investigate the leakage problem further.
Incidentally, does anyone have +mechanical drawings+ for the metal screens
that would have originally covered the connector slots? And do we know
whether or not the fan hole also had a protective screen? I've never seen
any good photos of a factory-correct back panel - either inside, or
outside. Only one poor shot that semi-shows that a perforated / expanded
metal screen +was+ used over the slots. That info would be helpful for sure!
On Sun, Sep 7, 2014 at 11:34 AM, drlegendre . <drlegendre at gmail.com> wrote:
Tony & All,
On Sat, Sep 6, 2014 at 2:37 PM, Tony Duell <ard at p850ug1.demon.co.uk>
wrote:
I think you should stop working on the Altair and sort out your workshop
wiring. Before you plug soemthing in with a serious leak and get
electrocuted.
It is sorted.. I'm not using that circuit for my bench any longer. In
fact, it was never actually a bench circuit - I was using a different (more
spacious) table to deal with the Altair, and was powering the equipment on
that table from another outlet.
This house was built in the 1870s. The present 100A service was installed
sometime in the early 1980s, but apparently code didn't require updating of
all the outlets at that time (either that, or they just plain shirked it).
All of the "new" circuits are 3-wire, but there are still a few legacy
2-wire circuits in here - terminated in new-ish 3-wire outlets, of course.