1.coils/capacitors have logarithmic/exponential curves...http://www.falstad.com/circuit/e-induct.htmlhttp://en.wikipedia.org/wiki/Inductor#Inductance_formulae2.how do u plan to make the primary side of that sensor?it seems to b a little bit dangerous for my taste...do u know an electrician?
1.how do u get a mainspower plug through that tiny hole?2.that sparkfun sensor can b integrated easier, i guess...one just snaps it on the mains power line...3.possibly u just measure the reactive power?i have no idea how that sensor works, when there r 2 wires with the same current (just the direction is the oposite)...i think u should wait for the high voltage experts... they should b here within a day...
1.ok - that sounds safe...2.i c3.ok - then it should work... how many measurements do u take? since it is AC, the voltage changes quite rapidly and strongly, i guess...
uhmwhy do u take the RMS value (it contains square values)?http://en.wikipedia.org/wiki/Root_mean_squarei think the arithmetic mean would b the right value...http://en.wikipedia.org/wiki/Arithmetic_average#Arithmetic_meanhave u seen this:http://arduino.cc/forum/index.php/topic,125952.0.html ?
Let RL=100, then appr. 100mV on RL translate to 1A... 200mV to 2A...
QuoteLet RL=100, then appr. 100mV on RL translate to 1A... 200mV to 2A...That "sensitivity" figure is specified at the rated current (of 25amp). So running 25amp Ip, you should expect about 2.5v (=100mv * 25amp) on the secondary. All rms of course. The datasheet doesn't say if that relationship holds if Ip is other than 25amp.
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