battery chargers, again
in [Design]
|
From: Jan Panteltje on 29 Sep 2009 07:47 On a sunny day (Mon, 28 Sep 2009 19:42:11 -0700) it happened John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in <sps2c51m3rnppq9vn8hu6rr11353l8cm51(a)4ax.com>: >The second two has status LEDs. Connected to the 1.8 volt battery, >"charging" was off and "charged" was lit. It would have been interesting to measure the voltage while it was connected. It perhaps just applied 14 V and did see no current. Voltage OK, no current = battery charged. How many [k]V do you think would be reasonable to have it try before detecting a current? That would require a multi sequence startup. First apply high voltage with low current limit to see if any mA flows. If not -> kaput -> exit. Then normal voltage with normal current limit. A bit unreasonable to expect all that from a simple charger.
From: Archimedes' Lever on 29 Sep 2009 08:41 On Mon, 28 Sep 2009 18:40:55 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com> wrote: >On Tue, 29 Sep 2009 09:24:13 +0800, who where <noone(a)home.net> wrote: > >>On Mon, 28 Sep 2009 15:43:21 -0700, Joerg <invalid(a)invalid.invalid> >>wrote: >> >> >>>The same happened to me after dusk on the road from Durness to Inverness >>>in Scotland. The old Ford Cortina just stopped, no more electric. Looked >>>around, opened fuse box, the big one was gone. "Oh s..t!" ... no other >>>cars traveling that road at this late hour. I did meet one horse though, >>>alone, just wandering about (you see those a lot there). I seriously >>>doubt it would have agreed to carry me to Inverness. So I slowly walked >>>back and lucked out, found the fuse in the dirt. It had simply fallen out. >> >>Lucas, Prince of Darkness? > >Sno-o-o-o-ort! Damn! Chardonnay up the nose :-( > > ...Jim Thompson And you couldn't manage 4 drops down the esophagus. Damn.
From: PeterD on 29 Sep 2009 09:16 On Tue, 29 Sep 2009 03:34:56 +0000 (UTC), David Lesher <wb8foz(a)panix.com> wrote: >John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> writes: > > >>I have plenty of other stuff to design. I did hack a charger from an >>old DSL wall wart and a sabre saw; isn't that enough? > >>John > >Hell no; it MUST use duct tape or it does not count. John never, ever said he didn't use duct tape... I suspect that he probably did, but if he is a professional he used Gorilla tape instead.
From: PeterD on 29 Sep 2009 09:17 On Tue, 29 Sep 2009 09:24:13 +0800, who where <noone(a)home.net> wrote: >On Mon, 28 Sep 2009 15:43:21 -0700, Joerg <invalid(a)invalid.invalid> >wrote: > > >>The same happened to me after dusk on the road from Durness to Inverness >>in Scotland. The old Ford Cortina just stopped, no more electric. Looked >>around, opened fuse box, the big one was gone. "Oh s..t!" ... no other >>cars traveling that road at this late hour. I did meet one horse though, >>alone, just wandering about (you see those a lot there). I seriously >>doubt it would have agreed to carry me to Inverness. So I slowly walked >>back and lucked out, found the fuse in the dirt. It had simply fallen out. > >Lucas, Prince of Darkness? I suspect it could have been no other!
From: John Larkin on 29 Sep 2009 10:25
On Tue, 29 Sep 2009 09:16:29 -0400, PeterD <peter2(a)hipson.net> wrote: >On Tue, 29 Sep 2009 03:34:56 +0000 (UTC), David Lesher ><wb8foz(a)panix.com> wrote: > >>John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> writes: >> >> >>>I have plenty of other stuff to design. I did hack a charger from an >>>old DSL wall wart and a sabre saw; isn't that enough? >> >>>John >> >>Hell no; it MUST use duct tape or it does not count. > >John never, ever said he didn't use duct tape... I suspect that he >probably did, but if he is a professional he used Gorilla tape >instead. I'm more of a hot-melt sorta guy. John |