Kirchoff's law

[rattus]

No Smart:

I refer to your post #77 where you have plotted a cosine wave, and you indicate indirectly that the average value is 0.707.

 

[ElctriclCncepts]

There's a lot of information here, enough so that there shouldn't be any confusion on K's Law ,Potential, and Phase current. But a basic introductory to electrical theory book wouldn't be bad to add to your library. Mike's seemed to be pretty good. I skimmed through his DVD with my Journeyman's package. Not bad at all.

 

[rattus]

Yep!

Yep!

There's a lot of information here, enough so that there shouldn't be any confusion on K's Law ,Potential, and Phase current. But a basic introductory to electrical theory book wouldn't be bad to add to your library. Mike's seemed to be pretty good. I skimmed through his DVD with my Journeyman's package. Not bad at all.

I agree. Learning the basics through this forum is slow, and might I say, "risky".

 

[winnie]

Smart$:

The _area_ under one lobe of a sine curve of period 2pi is simply 2. Do the definite integral. A rectangle of the same area and width pi thus has a height of 2/pi or 0.637.

-Jon

 

[Smart $]

No Smart:

I refer to your post #77 where you have plotted a cosine wave, and you indicate indirectly that the average value is 0.707.

Smart$:

The _area_ under one lobe of a sine curve of period 2pi is simply 2. Do the definite integral. A rectangle of the same area and width pi thus has a height of 2/pi or 0.637.

-Jon

Hmmm... Well I have to admit my calculus is not what it used to be. As the adage "use it or lose it" comes to mind, my case is haven't used it and done lost it. I composed the diagram from what I thought was an accurate memory. So, I cannot do a refresher (which really wouldn't serve any purpose at this point anyway) due to time constraints and must ever so humbly request mercy.

 

[Smart $]

Anyway, rather than let this thread die on a personal sour note, I thought I'd mention a little something, which doesn't require calculus , I have not seen mentioned anywhere...

The RMS value of a sinusoidal waveform coincides with the halfway-rotational point between peaks and zero crossings, i.e. where θ is at every other quarter-rotation angle, e.g. 45?, 135?, 225?, 315?, etc.,:

|cos θ| = 0.707​