Bob, I think your video about ground, and the one where you answed questions about ground, are even more informative for anyone who doesn't understand this concept!
Also if possible I would like to ask? I have a brushless motor and a diode bridge rectifier. After measuring voltage of every phase simultaneously with respect to negative terminal of rectifier I see my waveforms are trapezoidal and two phases overlap at peak voltage for some time. Is this normal, do I do anything wrong? Thank you very much!
You incorrectly described how AC power is delivered to a residential home. In the US, only 1 phase feeds a given neighborhood and then step down transformers are used to step the voltage down to 110/240 using a transformer that has a center tap on the secondary which becomes your neutral. Thus you get 220 V from one phase to the other and not the 208 V which you described. What you described is the phase to phase voltage in a commercial building where more than 1 phase feeds the building. The residential home power system is called bi-phase instead of 2 phase to denote that there are not 2 separate phases feeding the residential unit. And because of the center tapped transformer, the 2 phases are 180 degrees apart, not 120 degrees. Please correct this part of the video.
excellent👍🌹
Bob, I think your video about ground, and the one where you answed questions about ground, are even more informative for anyone who doesn't understand this concept!
The maestro strikes again 👏👏👏👍👍👍
Something I never thought before and please correct me if I am wrong, but touching the ground could potentially be dangerous.
Also if possible I would like to ask? I have a brushless motor and a diode bridge rectifier. After measuring voltage of every phase simultaneously with respect to negative terminal of rectifier I see my waveforms are trapezoidal and two phases overlap at peak voltage for some time. Is this normal, do I do anything wrong? Thank you very much!
At 23:00 and 34:00 you suggest getting the rms value by "square root-average-square". Shouldn't that be in the reverse order?
Excelente, pero me gustaria ver un ejemplo trfasico con cargas desiquilibradas y con el neutro flotante.
Thankyou Sir 🙏
You incorrectly described how AC power is delivered to a residential home. In the US, only 1 phase feeds a given neighborhood and then step down transformers are used to step the voltage down to 110/240 using a transformer that has a center tap on the secondary which becomes your neutral. Thus you get 220 V from one phase to the other and not the 208 V which you described. What you described is the phase to phase voltage in a commercial building where more than 1 phase feeds the building. The residential home power system is called bi-phase instead of 2 phase to denote that there are not 2 separate phases feeding the residential unit. And because of the center tapped transformer, the 2 phases are 180 degrees apart, not 120 degrees. Please correct this part of the video.
You should make a video and post it on TH-cam. You sound like a brilliant teacher
Great video! Subscribed
Super film 👌