Re: Household electrical current to Excel ???

[nobody@xxxxxxxxxxxx (Dave Houston)]

If you want to roll your own, look at...

     http://www.allegromicro.com/hall/currentsensor.asp

Dan Bloomquist <public21@xxxxxxxxxxx> wrote:

>
>
>Linny wrote:
>
>> On Mon, 29 Aug 2005 16:24:00 +0100, Declan McEvoy wrote:
>>
>> Someone from on Misterhouse list, named Alan Womack, did built
>> a cheap device that seem to work fine. This was done 2-3 years ago.
>> look for "power meter" in the archive.
>>
>> He did mention the following site.
>> http://www.seanadams.com/pge/
>>
>> And some post have his personal pictures
>
>Nice hack.
>
>But if time is money and you want to capture the signature of motor
>start-ups...
>
>Take a couple of cheap current transformers and a door bell transformer
>for sensors. (The first one I did was twenty five years ago using a hall
>device and multiplying in a MC1495)
>
>These days just take your three outputs and run them to something like
>the LabJack.
>http://www.labjack.com/labjack_u12.html
>
>Now you can even catch the power factor of reactive loads. At 20 samples
>per cycle you won't do to bad. If you are into it, you can hang a
>multiport AD converter on the parallel port.
>
>The question, 'does someone have a package ready to go?'. I'm sure there
>is. But it is likely to be industrial pricing requiring labview.
>
>Best, Dan.