I like this version better. I think students find it difficult to understand why we can always ignore the temporal part when using phasors. This is not easy to explain. But this is still a very good video. Sometimes it can be very nice to think about everything as moving around the same circle. Once all those current vectors have been calculated, all their vector arrows will look like one single fixed object rotating around the circle, a set of arrows all moving around together at the same frequency. Then add all real and Imaginary legs together to show the final arrow moving around. This rotating around the circle idea helped me visualise this easier, when I was learning this stuff.
Exactly! What triggered the production of this version was the question posted to the previous version about "why we evaluate the rotating vector at t = 0?", I responded with the creation of the short video clip this one: ruclips.net/video/NSoovq06m_U/видео.html
That is so cool! exactly what I meant. Brilliant! If you do a third version, you could refer to that video. As that makes it so much clearer. Not easy explaining this stuff but you have a rare gift of being able to! That would be the perfect animation if they also showed the two same sine curves moving out from the two vectors as well along with the resultant third one. Plus to hammer it home do the same calc but in rectangular (A + jB) notation instead. For teaching such animations are very good, I like it a lot! This is a difficult subject area and worth spending the time on. Massive thumbs up to you for doing this and making your lectures public like this!!
I will include this video in a future video: Impedances and AC Steady State. The original Wikipedia video, in the "phasor" entry, shows exactly what you describe in your post, the three sinusoids being generated by the rotating phasors.
Yes that is it! I just had a look at the wiki page. Wow! how bizarre! That is exactly the plot I meant. And they even have it shown on the cosine part as well. I seen similar before but always on the sine side. But the way they have done it is perfect as the defacto standard seems to be to use the cosine for signals. Yet the wiki description is very confusing! Ha ha! Your video is much clearer description than that wiki page. Shame as that animation is spot on. Thanks for the heads up. This was so cool finding this out. Wish I had seen that animation when I was learning this stuff.
I like this version better. I think students find it difficult to understand why we can always ignore the temporal part when using phasors. This is not easy to explain. But this is still a very good video.
Sometimes it can be very nice to think about everything as moving around the same circle. Once all those current vectors have been calculated, all their vector arrows will look like one single fixed object rotating around the circle, a set of arrows all moving around together at the same frequency. Then add all real and Imaginary legs together to show the final arrow moving around. This rotating around the circle idea helped me visualise this easier, when I was learning this stuff.
Exactly! What triggered the production of this version was the question posted to the previous version about "why we evaluate the rotating vector at t = 0?", I responded with the creation of the short video clip this one: ruclips.net/video/NSoovq06m_U/видео.html
That is so cool! exactly what I meant. Brilliant! If you do a third version, you could refer to that video. As that makes it so much clearer. Not easy explaining this stuff but you have a rare gift of being able to! That would be the perfect animation if they also showed the two same sine curves moving out from the two vectors as well along with the resultant third one. Plus to hammer it home do the same calc but in rectangular (A + jB) notation instead. For teaching such animations are very good, I like it a lot! This is a difficult subject area and worth spending the time on. Massive thumbs up to you for doing this and making your lectures public like this!!
I will include this video in a future video: Impedances and AC Steady State. The original Wikipedia video, in the "phasor" entry, shows exactly what you describe in your post, the three sinusoids being generated by the rotating phasors.
Yes that is it! I just had a look at the wiki page. Wow! how bizarre! That is exactly the plot I meant. And they even have it shown on the cosine part as well. I seen similar before but always on the sine side. But the way they have done it is perfect as the defacto standard seems to be to use the cosine for signals. Yet the wiki description is very confusing! Ha ha! Your video is much clearer description than that wiki page. Shame as that animation is spot on. Thanks for the heads up. This was so cool finding this out. Wish I had seen that animation when I was learning this stuff.
thank you dr linares you the best yeaaaaah