Re: [BlindHandyMan] Electric meter for outlets

2007-09-06 Thread Dan Rossi
I just did a search for watt hour meter on google and got a bunch of 
hits.  Including sponsored links for places that sell WattHour Meters.


-- 
Blue skies.
Dan Rossi
Carnegie Mellon University.
E-Mail: [EMAIL PROTECTED]
Tel:(412) 268-9081


[BlindHandyMan] Electric meter for outlets

2007-09-05 Thread Ralph Supernaw
Hi,
 
We sent an old refrigerator to wherever old refrigerators go to die.  As I
considered trying to figure out how much electricity the old one used
compared to what the new one will use I began to wonder if there's such a
thing as a meter you can plug into an outlet and then plug something into
the meter to find out how much electricity is being used.  Is there such a
thing?
 
Ralph


[Non-text portions of this message have been removed]



Re: [BlindHandyMan] Electric meter for outlets

2007-09-05 Thread Max Robinson
There was a watt hour meter project in popular electronics back in the 70s I 
think.  Sorry I can't do any better than that.  I don't know how it could be 
adapted for the blind.  It's not enough to measure the current.  You need to 
compare the phase with the voltage to get actual power.  Then it has to be 
accumulated over time to get total energy consumed.

Regards.

Max.  K 4 O D S.

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- Original Message - 
From: Ralph Supernaw [EMAIL PROTECTED]
To: blindhandyman@yahoogroups.com
Sent: Wednesday, September 05, 2007 5:59 PM
Subject: [BlindHandyMan] Electric meter for outlets


 Hi,

 We sent an old refrigerator to wherever old refrigerators go to die.  As I
 considered trying to figure out how much electricity the old one used
 compared to what the new one will use I began to wonder if there's such a
 thing as a meter you can plug into an outlet and then plug something into
 the meter to find out how much electricity is being used.  Is there such a
 thing?

 Ralph


 [Non-text portions of this message have been removed]



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Re: [BlindHandyMan] Electric meter for outlets

2007-09-05 Thread Tom Fowle
Ralph,
It would be called an A.C. amp meter and is perfectly possible, however I 
don't know of an off the shelf unit that will do what you want
let alone one that is blind accessible.  There are things called clamp amps
that have a fitting that goes around a single wire from an A.C. cord, this
will plug into most DMM's like the talking DMM 
talked about on this list.

This means it is not actually electrically connected to the A.C. lines
and so safer.

the talking meter measures A.C. current but not to the number of amps you need
for something like an appliance.

I don't know why somebody doesn't make such a device, maybe they do and I just
havn't seen it yet.  You'd think it would be a big seller.

Tom



Re: [BlindHandyMan] Electric meter for outlets

2007-09-05 Thread Tom Fowle
Max is, of course correct, an amp meter would give you a fair approximation
but you really need a wat hour meter.  I'm sure they can be bought,
I'll look around, maybe there is one with a serial port to hook to 
a computer.

Tom



RE: [BlindHandyMan] Electric meter for outlets

2007-09-05 Thread Tony
There are units available for $20-$40 that will give volt amp and
accumulated volt amp hours on a LCD screen.  Haven't seen one that gives
watts and watt hours but the cheap ones can give a good comparison for what
you are after.  Last time I saw a good price was on newegg.com, but I have
seen the same unit other places.

Tony
 

-Original Message-
From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of Ralph Supernaw
Sent: Wednesday, September 05, 2007 5:59 PM
To: blindhandyman@yahoogroups.com
Subject: [BlindHandyMan] Electric meter for outlets

Hi,
 
We sent an old refrigerator to wherever old refrigerators go to die.  As I
considered trying to figure out how much electricity the old one used
compared to what the new one will use I began to wonder if there's such a
thing as a meter you can plug into an outlet and then plug something into
the meter to find out how much electricity is being used.  Is there such a
thing?
 
Ralph


[Non-text portions of this message have been removed]



To listen to the show archives go to link  http://acbradio.org/handyman.html
or ftp://ftp.acbradio.org/acbradio-archives/handyman/

The Pod Cast address for the Blind Handy Man Show is.
http://www.acbradio.org/news/xml/podcast.php?pgm=saturday

Visit The Blind Handy Man Files Page To Review Contributions From Various
List Members At The Following address:
http://www.jaws-users.com/handyman/

Visit the archives page at the following address
http://www.mail-archive.com/blindhandyman@yahoogroups.com/  

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