21 Oct
2004
21 Oct
'04
12:07 p.m.
I just got some HP calculators!
Now I have some questions :^)
--Anyone have a spare manual for either?
--Have pointers on replacing the battery pack on the 55?
(it seems to be 3 AAA nicads)
--Anyone have any pointers on cleaning up leaked nicad crystals?
what is that stuff anyway?
I do have cases and power suplies.
-- I took apart the 25's battery pack and replaced the nicads with
nickel metal hydride cells (the same ones I use in my camera)
-- Is is ok to run the 55 on wall power supply without a battery
pack installed?
Will trade the 55+case+powersupply+leakybatteries(in a ziplock bag)
for complete set of docs for the 25 + 1 good application book,
preferably games :^)
21 Oct
21 Oct
2:37 p.m.
Ron Hudson wrote:
I just got some HP calculators!
Now I have some questions :^)
Many of your questions will be answered at:
http://www.hpmuseum.org/
which is the on-line Museum of HP Calculators. The museum's
CDs include scanned manuals for many HP calulators. There's
also info on rebuilding battery packs (I've done an HP22, and
will one day put the photos onto the web).
--
John Honniball
coredump(a)gifford.co.uk
2:43 p.m.
I just got some HP calculators!
Exceellent!
Now I have some questions :^)
--Anyone have a spare manual for either?
You should by the CD-ROMs from the Museum of HP Calculators
(http://www,hpmuseum.org/). You should find scanned user manuals (and
maybe program libraries, etc) for both machines there. If you want
schematics, then I think HPCC can help out...
--Have pointers on replacing the battery pack on the 55?
(it seems to be 3 AAA nicads)
It's 3 AA NiCds in series. Nothing more.
--Anyone have any pointers on cleaning up leaked nicad crystals?
what is that stuff anyway?
It's some alkaline compound, you need a (chemically) weak acid to clean
it up. I use a dilute solution of citric acid (this stuff is somewhat
hard to get in the UK, althought it's pretty harmless. I am told that
drug pushers (the illegal kind) use it to 'cut' their wares, hence the
fact that anyone buying it is viewed with suspicion :-().
I do have cases and power suplies.
-- I took apart the 25's battery pack and replaced the nicads with
nickel metal hydride cells (the same ones I use in my camera)
Should be OK.
-- Is is ok to run the 55 on wall power supply without a battery
pack installed?
Yes. It is safe to run the 35, 45, 55, 70, and 80 (but _not_ the 65 or
67) on that PSU without a battery pack. Don't run _any_ 2xC or 3xC (25C,
29C, 33C, 34C, 38C) or 95C on the adapter without a good battery pack
installed, you are very likely to damage ICs).
-tony
24 Oct
24 Oct
2:11 p.m.
----- Original Message -----
From: "Tony Duell" <ard(a)p850ug1.demon.co.uk>
To: <cctalk(a)classiccmp.org>
Sent: Friday, October 22, 2004 12:43 AM
Subject: Re: HP 25 and HP55
Boots sell it in the wine and beer making section.( hic )
Geoff.
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.782 / Virus Database: 528 - Release Date: 23/10/04
--Anyone have
any pointers on cleaning up leaked nicad crystals?
what is that stuff anyway?
It's some alkaline compound, you need a (chemically) weak acid to clean
it up. I use a dilute solution of citric acid (this stuff is somewhat
hard to get in the UK, althought it's pretty harmless. I am told that
drug pushers (the illegal kind) use it to 'cut' their wares, hence the
fact that anyone buying it is viewed with suspicion :-().
7212
days inactive
7215
days old
3 comments
4 participants
participants (4)
-
ard＠p850ug1.demon.co.uk -
coredump＠gifford.co.uk -
geoffreythomas＠onetel.com -
ron.hudson＠sbcglobal.net