http://www.allaboutcircuits.com/vol_3/chpt_3/4.html
This page is missing a word in the caption to the 4th illustration down:
"Top half of secondary conducts during positive half-cycle..."
Looks like it should say "top half of secondary coil"
This page is missing a word in the caption to the 4th illustration down:
"Top half of secondary conducts during positive half-cycle..."
Looks like it should say "top half of secondary coil"