Power Meter

[PaulHilgeman]

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

 

[elizard]

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

 

[gammelmalle]

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

 

[cocolino]

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/showthread.php?s=&threadid=8723

 

[JOE DIRT®]

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®

 

[gammelmalle]

DANKE
Thanks for the thread. I sure will read it
(Danke fur das ??? drath ? Ich will dass vierklish lesen) ????
björn

 

[joensd]

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

 

[cocolino]

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.

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)?