Battery power to replace wall power supply?
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Battery power to replace wall power supply?
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Robert Oschler
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Posted: Wed Feb 09, 2005 8:41 am    Post subject: Re: Battery power to replace wall power supply? Reply with quote

"Robert Baer" <robertbaer@earthlink.net> wrote in message
news:42099657.C8923751@earthlink.net...
Quote:
I am surprised that you do not have a DVM (or a VOM).
Depending on (possible) future useage, you could get an el-cheapo VOM
from the likes of harbor freight (about $2) or at R.S. (about $25); for
a good DVM at prices better than at R.S., try Jameco.
Look for meters that have 2 or more current ranges not counting a 10
amp range; the R.S. $15 VOM has only one range (150mA) and may not be
adequate for this application.
The Jameco DVMs go from about $10 and up.

Robert,

Looks like you found out already that I'm way more of a programmer than an
electronics guy. :) Although I have soldered together one or two
electronics kits in my time.

I just picked up an "auto-ranging" Multimeter from Radio Shack today. It
say it measures AC/DC voltage levels, current, and resistance, and has a
diode checker. Is that what I need? Not sure what DVM and VOM mean.

Thanks.


--
Robert Oschler
http://www.robotsrule.com/phpBB2/
Robot & Android Discussion Forum

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Robert Oschler
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Posted: Wed Feb 09, 2005 8:41 am    Post subject: Re: Battery power to replace wall power supply? Reply with quote

"Robert Baer" <robertbaer@earthlink.net> wrote in message
news:42099702.56C2BD3E@earthlink.net...
Quote:

Now *that* sounds very interesting!
One duck to another "It *was* an UFO!. It even talked (quacked) back
to me! I swear, I am not going quackers!".

Funny you should say that. My next Robosapien movie shows an actual duck
attacking my Robosapien.

If you never saw my first Robosapien movie you can see it at:

http://www.robotsrule.com/html/robot.php

Be forewarned it's *really* silly.

--
Robert Oschler
http://www.robotsrule.com/phpBB2/
Robot & Android Discussion Forum
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Mitch Berkson
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Posted: Wed Feb 09, 2005 9:18 pm    Post subject: Re: Battery power to replace wall power supply? Reply with quote

Matthew Gunn wrote:
Quote:
Yeh, sweet. They are a pain in the ass, even at home. So many things
these days are low voltage so they come with one of these things. You'd
think someone would design one that can be plugged in next to
other ones or other plugs.

Switching regulators are becoming more popular - they are more efficient and
smaller (fit next to each other), but somewhat more expensive. My D-Link
router came with one which is a good reason to like D-Link. Jameco sells
them also (e.g.,
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=129187)

Mitch

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Robert Baer
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Posted: Fri Feb 11, 2005 1:58 pm    Post subject: Re: Battery power to replace wall power supply? Reply with quote

Matthew Gunn wrote:
Quote:

Robert Oschler wrote:
"Matthew Gunn" <matthewgunn_au@hotmail.com> wrote in message
news:42087fcc$1@quokka.wn.com.au...

"worry wart", very punny, lol.


Hey I've never heard of these power adapters being called a wall wart
before.



Matt,

Other Robert here (OP).

They're called wall warts in the music industry. If you are a musician with
a lot of effects boxes (distortion pedal, phaser box, etc.), those wall
warts are a pain to attach to a power strip because they don't sit next to
each other well (think of the geometry). In fact there are companies that
make "wart removers". A wart remove is just a very short power cord,
usually about 8" at most, with a flat plastic panel at the end that has a
single AC plug outlet. This moves the wall wart away from the power strip
and allows you to easily plug multiple effects boxes into a power strip.

Thanks
Yeh, sweet. They are a pain in the ass, even at home. So many things
these days are low voltage so they come with one of these things. You'd
think someone would design one that can be plugged in next to other ones
or other plugs. I also didn't know you could get the wart removers but
usually have to resort to 1m or 2m extension cords.
You can get powerboards that allow for a couple of them but I still
think it would be easier if the bloody things weren't so wide.

It turns out that someone *has* designed narrow wall warts!
Jameco carries them; see their 225995, 216442, 249324, 298054, 239564,
190512 and 190511; all 1.8" wide or less. They have others; that list is
a sample.
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