Electronic Basics #38: True, Reactive, Apparent & Deformed Power
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I've learned tons from you vids and I hope you keep doing them for a long time.
Date: 2020-09-05
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Comments and reviews: 9
Christian
The reason the power grid don't like those load that are not pure resistive is the wasted heat in the he transformer.
Any higher frequency harmonic created by the laptop power supply or the dimmer is affecting those fine tuned transformers. They are normally so efficient that little heat is created. But any perturbation suddenly increase the heat and, given million of them everywhere, one with small defect will self destroy.
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The reason the power grid don't like those load that are not pure resistive is the wasted heat in the he transformer.
Any higher frequency harmonic created by the laptop power supply or the dimmer is affecting those fine tuned transformers. They are normally so efficient that little heat is created. But any perturbation suddenly increase the heat and, given million of them everywhere, one with small defect will self destroy.
reply
Anastasis
1st time watching this: I can't understand ANYTHING!
3rd time watching this: .OK! now I get it!
It just really shows you that with mathematics (especially when dealing with complex numbers) you have to really study these things again and again and again!
Dude! Keep up these videos you are incredible at making these formulas look 10. 000. 000 times more tolerable than my mathematics courses in UNI: )
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1st time watching this: I can't understand ANYTHING!
3rd time watching this: .OK! now I get it!
It just really shows you that with mathematics (especially when dealing with complex numbers) you have to really study these things again and again and again!
Dude! Keep up these videos you are incredible at making these formulas look 10. 000. 000 times more tolerable than my mathematics courses in UNI: )
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MARKYS
Hello Scott!
I have a suggestion for a Electronics Basics video - Feedback system.
I know, it might be simple, but in my opinion it would be great to see a EB video about it to understand it better: ), because i quite dont know, how to make a feedback system for my future project - modified squarewave inverter by your design: )
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Hello Scott!
I have a suggestion for a Electronics Basics video - Feedback system.
I know, it might be simple, but in my opinion it would be great to see a EB video about it to understand it better: ), because i quite dont know, how to make a feedback system for my future project - modified squarewave inverter by your design: )
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Chepp
Yo GreatScott, i have some ideas for projects you can
try/create to make a new video: D
1. a mobile car heating for the driver area and windows
2. a present card, and if you open it will play your music
3. a little spy cam with memory for videos
Hope this are good concepts for you; p
reply
Yo GreatScott, i have some ideas for projects you can
try/create to make a new video: D
1. a mobile car heating for the driver area and windows
2. a present card, and if you open it will play your music
3. a little spy cam with memory for videos
Hope this are good concepts for you; p
reply
electron1979
PF isn't that important for such low power devices. It is important in industrial scenarios; that's why they measure and charge for it!
These videos remind me so much of Electrical and Electronic Engineering classes!
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PF isn't that important for such low power devices. It is important in industrial scenarios; that's why they measure and charge for it!
These videos remind me so much of Electrical and Electronic Engineering classes!
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ThomasHaberkorn
would it also have the same canceling effect if the 0. 18 uF capacitor is connected in series to the motor on 7: 18, the cap is in parallel to the motor)? If not, what is the value of the capacitance needed?
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would it also have the same canceling effect if the 0. 18 uF capacitor is connected in series to the motor on 7: 18, the cap is in parallel to the motor)? If not, what is the value of the capacitance needed?
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Charnold
GreatScott!
But still: it is sinusoidal, not sinusodial!
Please use it correctly! Please! Please? Big please?
Echt! Wirklich! Ansonsten sind Deine Videos klasse! Aber das nervt mich total!
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GreatScott!
But still: it is sinusoidal, not sinusodial!
Please use it correctly! Please! Please? Big please?
Echt! Wirklich! Ansonsten sind Deine Videos klasse! Aber das nervt mich total!
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Woodrow
This video is fantastically clear and instructive. During your most recent QA you were right to say that maybe you should change the name. Thanks!
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This video is fantastically clear and instructive. During your most recent QA you were right to say that maybe you should change the name. Thanks!
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rapolas
i did not understand how can power factor cause damage to our power grid, and why is that laptop power supply bad. can someone explain please?
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i did not understand how can power factor cause damage to our power grid, and why is that laptop power supply bad. can someone explain please?
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