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Old 9th May 2003, 02:38 PM   #1
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Default Power Meter

Has anyone looked at the power meter over at http://www.snippets.org/filters/wattmeter.htm ?

It looks interesting, and may be somewhat useful for testing stuff.

Thanks,
Paul
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Old 9th May 2003, 02:48 PM   #2
elizard is offline elizard  Canada
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well looks simple enough to implement

for $5 you can get the chip from digikey (canadian that is!) and another $5 for led's ..
so $10 all in all to make it .. maybe i'll try it too!

although i would love to find out if it works or not as well
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Old 9th May 2003, 07:29 PM   #3
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Testing ... what stuff? Seems good for RMS wattage but if not true RMS? I dont think it will be good for testing you wall outlet (how much your computer consumes) except for things with cos fi of 1 (that is resistive)
Please correct me if Im wrong!
But Ive used this IC for some of my projects and its OK.
björn
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Old 9th May 2003, 07:44 PM   #4
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Testing ... what stuff? Seems good for RMS wattage but if not true RMS? I dont think it will be good for testing you wall outlet (how much your computer consumes) except for things with cos fi of 1 (that is resistive)
Check this thread for info about (True) Audio-Power Meters:
http://www.diyvideo.com/forums/showt...&threadid=8723
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Old 9th May 2003, 07:53 PM   #5
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I have been using the LM 3914/15/16 for years.....it has a dot or bar functionthe 3915 is a log type and can fairly accuratenational has a great application guide on their website for different applications

Cheers!!The DIRT®
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Old 9th May 2003, 07:57 PM   #6
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DANKE
Thanks for the thread. I sure will read it
(Danke fur das ??? drath ? Ich will dass vierklish lesen) ????
björn
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Old 9th May 2003, 08:05 PM   #7
joensd is offline joensd  Germany
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Hey Christoph,
I´ve just read you got this Elektor article about a wattmeter.
Would you mind sending it over?
I got a few Elektor articles as well so we could swap around.

TIA
Cheers
Jens
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Old 9th May 2003, 08:50 PM   #8
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Thanks for the thread. I sure will read it
(Danke fur das ??? drath ? Ich will dass vierklish lesen) ????
Hi Björn,

you're welcome!
lessons in German :
Danke für das (den) ??? (don`t know an equivalent in German either... ) . Ich werde das wirklich lesen.


Quote:
Hey Christoph,
I´ve just read you got this Elektor article about a wattmeter.
Would you mind sending it over?
I got a few Elektor articles as well so we could swap around.
Jens,
no problem, just send me Your email adress.
As I have sent it to another member already it`s ready for "emailing".
The scans are rather big (even already downscaled in resolution) - can You receive 4MB without problems (but could send it in parts also)?
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