At 04:01 AM 1/14/05 -0500,
[hidden email] juggled the
keys to produce...
> > Since this list is a font of everything electronic, can y'all help me with
> > this?
> >
> > I've got a HP DC power supply (6443B) that's worked great for a long time.
> > I DON'T have a service manual for it (of course). Recently, when I turn
> > this thing on, the voltage comes up, then drops off slowly (this is under
> > no load conditions) over 20-30 seconds, then blows the C/B.
> >
> > I think I've troubleshot the problem down to the supply side capacitors.
> > They're massive can-types. About 3" in diameter by 6" tall. On the side is
> > the following information:
> >
> > Sprague
> > Compulytic
> > 32D
> > 4500-150 DC
> > 7230 L
> > 0180-1839
> >
> > I know Sprague has merged several times, but I've been trying to get some
> > information about this part from my normal suppliers (Mouser, Digikey)
> > with no luck...
> >
> > Rather than buying the manual for $35, can someone out there help me
> > "decode" this part number? I figure if I can find the original capacitance
> > and voltage/load ratings, I can just find a more modern replacement.
> >
> > Thanks in advance for the help, guys.
> >
> > Richard Perry
>====================
There's also an operating/service manual available on ebaY for $14.95
"Buy-it-Now", if you care to have things like detailed calibration
procedure, etc. You may also wish to join/post to a couple YahooGroups,
"nomanual" and "Manual Exchange"
I'm always a bit nervous about a piece of gear that comes without the
manual - especially, say, a built Heathkit. I'm at the mercy of someone
else's building skills then.
But for a capacitor substitution like this, you can probably find what you
need at a distributor, Digi-Key, Mouser, Newark, Allied, etc. Some of them
may be able to let you search for a sub, within the physical envelope of
the original. Before you mount the thing permanently, try just
disconnecting and bridging in the sub. There could be other things
failed. Be careful; you are in lethal country there!
73, Phil Barnes-Roberts WA6DZS DM04we | Mailto:wa6dzs at arrl dot net
The only Dumb Question is the one you Didn't Ask because you thought
it would Sound Dumb. --AQF1 Jones
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