AC Theory

AC Theory

1. electro-magnatism

   • lines of flux
     • lines of flux do not cross
     • lines of flux flow from north to south
     • flux can be the same but with different density

2. EMF

   • magnetic flux density = tesla(Wb/m(square))
   • magnetic flux= phi= (Wb)

3. AC sin wave

   • Frequency= f = Hz
     • Frequency= 1/time period
   • V avg=0.636*V peak
   • I avg= 0.636*V peak
   • V rms= 0.707*V peak
   • I rms= 0.707*V peak
   • V peak= 1.414* V peak
   • I peak= 1.414* I peak

4. Transformers

   • step up transformer
   • step down transformer
   • Delta/star