Check this out:
Oh, and you gotta love the solar powered model:
Dave.
-- --------------------------------------------- Check out my Electronics Engineering Video Blog & Podcast: http://www.alternatezone.com/eevblog/
I have a 20odd year old Fluke 77 and I think I have replaced the battery (9volt) once or twice in that time. Why would you need any more energy than that, kinetic or not?
John G.
I wonder what kind of battery the solar powered rechargable uses.
All the rechargable batteries I've ever had have died sooner than a typical primary cell battery would have in this application.
Sylvia.
Bingo, it's a useless concept. Good auto power off and long battery life in a meter is not rocket science.
Dave.
-- --------------------------------------------- Check out my Electronics Engineering Video Blog & Podcast: http://www.alternatezone.com/eevblog/
Unless its a marketing / gimick ploy. But I'm sure Jaycar wouldn't venture into that arena.
ose
ctView.asp?ID=3DQM1546
Almost all cheapo "solar-powered" calculators in fact have "dummy" solar cells that are not even wired to the circuit. They just use the batteries all the time.
There was a flurry of fake "shake lights" that were actually not powered by shaking at all but by a couple of battteries.
My guess is that the energy requirement of a LCD DMM in voltage or current mode is trivially small and probably about the same as a LCD calculator. Put it in ohms mode, though, and I'm sure that some ranges take several mA.
Tim.
"John G." "David L. Jerkoff"
** Bloody obvious to anyone- the product blurb is a total wind-up.
... Phil
On a sunny day (Wed, 10 Jun 2009 06:26:42 -0700 (PDT)) it happened Tim Shoppa wrote in :
I ahd a credit card sized solar calculator, it had no batteries at all. Indoors it only worked directly onder a 100W desklamp...
And why do they seem to always have an "off" key?
-- John Devereux
Maybe they know something we don't. :-)
Ed
Good question. Maybe dumb people want that? Either on customer or manufacturer side...
My old solar powered Casio FX-991 only has an "on" key which works as a reset, in case the calc has hanged due to insufficient light... Got me through high school, although I remember one physics exam when there was a power outage. Good thing it was short, otherwise I would've been screwed... The calculator really doesn't work in dim light, but OK in normal lightning.
Shoppa
r th=3D
rodu=3D
Ever hear of "Daylight Savings"?
Gees, Phil, you've found you sense of humour. :-)
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