The post says "Unfortunately, in introductory texts, their operation is often explained in confusing ways." and this is 100% true. I remember being baffled by t

The post says "Unfortunately, in introductory texts, their operation is often explained in confusing ways." and this is 100% true. I remember being baffled by them in high school (when I was taking an online college-level EE course). The blog is a remarkably good explanation.