I would like to thank you Joe for all your series of video uploaded and I spent my last 10 days going through them in order to be ready for my Adv Sc Princ L3 at Optima London Training Centre , I have smashed it. Thank you Thank you Joe. you don't know how many of out there who are taking advantage of your video. May God continue to give the courage, and enough energy upon years coming Joe.
Wow, what an incredible comment. So glad the videos have been helpful to you, it's hard work but it's great to know that people are benefitting from them. 😊
FINALLY, a video that explains it all using ONE right-angled triangle, that in fact, each in the three is (effectively) the same animal. cos θ (or ϕ for phase angle), ° = Adjacent/Hypotenuse = VR/VT = R/Z = W/VA = Power Factor. Where θ (or ϕ for phase angle) = 0°, VL = 0, X = 0, VAr = 0. This is a DC (direct current) circuit. Thank you for the best clarity that I have seen to date!
Your videos are very much appreciated. I’ve been struggling with A/C theory in my power engineering for weeks. Trying to wrap my head around everything. Your videos laid it out perfectly and it makes perfect sense. Thanks man, this will go a long way in helping me pass my test next week.
I'm just really glad they've helped Eric, it makes it all worthwhile, thank you so much for chipping in financially, it's very much appreciated. Let me know how you get on with your test yeah? 💪
Sure appreciate your efforts in these videos Joe, makes a world of difference to supplement my Electrician apprenticeship coursework with your teachings.
Hey wonderful joe I wz really fearing this subject I wz hoplessly thinking I wz gonna get lost but listening to you giving me a great hope .Im a 68 yr old trying to get my head around this for my Electrical theory level 3 nite class.Thank you so much I can do this now wth comparative ease yahooee
Awesome, you make things so simple. Looking forward to your next video on the sizing of the Capacitor needed to improve from low Pf also the required KVAR.
Joe...you should be given a knighthood for all your helpful videos. They are very clear and concise. So helpful for apprentice and students like me. Thank you.
this video is the holly grail of your ac theory thalmud bro! I feel enlightened and calm like a bhuudahh before my exam! Feelin' like ZEUS allready! ( he was the first sparky ever , innit)
Fantastic video as always Joe. It's great to see new ways of delivering a sometimes difficult and confusing subject to present. I find myself talking back to you which the wife finds quite amusing. Keep up the good work
my lecturer sent me here after it became apparent our lecturers last year didn't particularly cover.....well, most of the theory tbh, hopefully I'll make head or tail of it eventually.
Thanks Joe. I've followed and understood all these videos. At 11:44 you say "a capacitor generates inductive reactance". In earlier videos you say that a capacitor generates capacitive reactance. I'm confused now.
Hi Joe. Thank you for taking the time to produce great and explanative videos. I'm about to start Level 3 at college, although it may be at home at some point. Is it possible for you to cover Kirchoff's Law? Both Current and Voltage...TIA
Hi Joe. Excellent as always but I also got a bit confused when you said a capacitor generates inductive impedance albeit you did say in the opposite direction.
Your videos are very informative . But if there is some way you number the Videos from 1, 2, 3, 4 and so on ; it will help a lot to focus in a proper manner .
Great explanation! However I feel like saying "power factor is a bad thing" is slightly misleading in the sense that a higher power factor is actually better than a lower power factor.
Simple, complete and therefore very good explanation. Only one question: Where do I find the power factor information on a, let say, laptop external or internal transformer or any other transformer and how do I in practice verify/measure it ? Keep in mind that sometime the transformer's power is not specified, typically on laptop's ones. Thank you.
In power factor correction, are we correcting the phase difference between the current and voltage of the public power supply company or is it correction of the inductive loads which could be water pump or any other kind of load. Secondly, do resistive loads have phase difference? Does it mean when the loads are purely resistive the power factor is at its maximum theoretical value of 1?
Hi Joe. Thanks for your training videos, they are helping me to pass my exams. No, I found this problem, How can I proceed? Let me now any clue... Problem: "A 120 V circuit contain a fluorescent fixture with the two 80 watts lamp, an ampere-metter is connected and indicate a 1.6 amps load. What is the power factor of this circuit ?" Thanks in advance for your help.
Joe great video, How do I watch these in series? I generally search the problem I am trying to figure out but then find there is more to it that I should have watched earlier. Is there a way to find the previous videos that would lead up to this?
Hi Travis, thanks for watching and commenting, if you check out my AC Theory playlist below it covers all that I've done on this subject so far. 😊 Check out my other playlists for other electrical topics. 👍 AC Theory: ru-vid.com/group/PL7eNzIRgKe07BOqPH7MrrKy89M3o4wU-2
How does the power supply company know what your power factor is to fine you given that they don't, in general, know what equipment you have and how it is used?
Hi Joe, first of all I would like to say thanks for your videos I really like your teaching methods. I need some help on AC parallel circuits. Bit I didn't find any video from you. Thank and regards Nicholas.
Can you please make a video on generator set power factor? I don't quite get how a genset can have power factor and how can that be corrected, so that I can maximise the usage of the output power. I thought loads have power factor, not sources. Thank you
So, the general case would be that you have an inductive circuit, so the current is lagging the voltage. If a capacitor is used to correct this, does that (for want of a better description) push the current forwards to bring them into phase at 0 degrees offset, or does it push the current back, so it is out of phase by -360 degrees, but lines up nicely :-) ? Either way would work and the cycles would be in sync, but does it matter?
So, question. Why then in the lamp schematic is the correction capacitor on a switch? Is there some disadvantage to having it hardwired in from the factory?
Great question, that switch doesn't exist in fluorescent light fittings normally, it was installed for demonstration purposes to show how connecting and disconnecting the capacitor affects the light fitting and currents etc.
Joe Robinson Training Ahhh, of course. I should have known that! I’ve (almost) watched this whole series over the past few days, while I’ve got you here I’d like to say thank you for putting all of this work in to share knowledge with us. It is greatly appreciated as I am an industrial mechanic looking to cross train as a sparky and I believe this will put me well ahead of the curve to be a Michelin certified sparky. I cannot thank you enough.
Why overcompensation causes over voltage at the load terminals. I searched for the reason but I did not find the equations that supports this phenomenon. If u can help me please
