AC Voltage Calculation - Vrms Vmax Frequency
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Date: 2023-11-17
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Comments and reviews: 17
Slordmo
Soooo. 1 piece of trivia I've never learned, is 'why' the US uses 60Hz, and the rest of the world is at 50Hz. was it something to do with synchronous clock motors, or the size of transformer cores having to be 'bigger' (more expensive) at 60? Or was it something to do with 3-phase power in the U. S. by dividing the 360 degree rotation at an equal multiple? Any answers? Thanks.
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Soooo. 1 piece of trivia I've never learned, is 'why' the US uses 60Hz, and the rest of the world is at 50Hz. was it something to do with synchronous clock motors, or the size of transformer cores having to be 'bigger' (more expensive) at 60? Or was it something to do with 3-phase power in the U. S. by dividing the 360 degree rotation at an equal multiple? Any answers? Thanks.
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John
Admittedly, I am curious what background infrastructure you've implemented to deliver a demo to measure 120VAC/60Hz vs. a 230VAC/50Hz vs. a 240VAC/50Hz. Magic of television and all that, or something a bit more precisely engineered fo actually deliver those exact frequencies and voltages? It could be expanded further to deliver a 100VAC/50Hz Japanese receptacle.
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Admittedly, I am curious what background infrastructure you've implemented to deliver a demo to measure 120VAC/60Hz vs. a 230VAC/50Hz vs. a 240VAC/50Hz. Magic of television and all that, or something a bit more precisely engineered fo actually deliver those exact frequencies and voltages? It could be expanded further to deliver a 100VAC/50Hz Japanese receptacle.
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Dave
A small point. In the UK it was 240v L-N.
Once we joined the EU we were required to have a common voltage (230v. Changing the mains voltage would be no small matter so it was fudged! We have exactly the same kit as always but the measurement has an allowable error 230v + 10% - 6%. Giving exactly the same voltage as before, but with a different label!
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A small point. In the UK it was 240v L-N.
Once we joined the EU we were required to have a common voltage (230v. Changing the mains voltage would be no small matter so it was fudged! We have exactly the same kit as always but the measurement has an allowable error 230v + 10% - 6%. Giving exactly the same voltage as before, but with a different label!
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Gary
If I hear it correctly, there's an error in the voiceover. It says To find the RMS voltage, we divide the peak voltage by 0. 707. This should be multiply, not divide. It is correctly shown as multiply in the on-screen caption.
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If I hear it correctly, there's an error in the voiceover. It says To find the RMS voltage, we divide the peak voltage by 0. 707. This should be multiply, not divide. It is correctly shown as multiply in the on-screen caption.
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Mathew
I always enjoy your videos and they are great for refreshing what electrical theory I have forgotten, haha. By the way we officially have 400/230v in Australia, although you will find 415/240v in alot of areas still.
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I always enjoy your videos and they are great for refreshing what electrical theory I have forgotten, haha. By the way we officially have 400/230v in Australia, although you will find 415/240v in alot of areas still.
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Xhance
can we tackle a topic on countries house hold electric circuit that doesn't have any sort of grounding on outlets? I live in the Philippines and we have a bad house hold electrical systems.
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can we tackle a topic on countries house hold electric circuit that doesn't have any sort of grounding on outlets? I live in the Philippines and we have a bad house hold electrical systems.
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Scorpio
I think this perpetuates the common misconception that the U. S. uses 120V. In my opinion, since so many people misunderstand, it would have been worth an extra sentence to clarify.
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I think this perpetuates the common misconception that the U. S. uses 120V. In my opinion, since so many people misunderstand, it would have been worth an extra sentence to clarify.
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Hassan
Hello, could any one explain to me, why the electric tester light up with the LIVE wire, but not with the Neutral? Even though the current is alternating between both of them!
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Hello, could any one explain to me, why the electric tester light up with the LIVE wire, but not with the Neutral? Even though the current is alternating between both of them!
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Hopelessand
Peak acv X 0. 707 yields RMS ac volts, true. But why does peak acv X 0. 636 yield average ac volts? Why are RMS and average volts different values?
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Peak acv X 0. 707 yields RMS ac volts, true. But why does peak acv X 0. 636 yield average ac volts? Why are RMS and average volts different values?
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Telugu
Hi sir recently in my company fire hydrant dg set battery exploded, what was the reason for this, make video for safe operation of lead acid battery.
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Hi sir recently in my company fire hydrant dg set battery exploded, what was the reason for this, make video for safe operation of lead acid battery.
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sysop073
If e. g. voltage cycles between +170V and -170V, it seems like you could just call that 170V. I don't understand the need for averaging and RMS
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If e. g. voltage cycles between +170V and -170V, it seems like you could just call that 170V. I don't understand the need for averaging and RMS
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Davin
Not a fan of the recommended video cards at the end of the video. Blocks the content at the end of the video.
Great video btw
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Not a fan of the recommended video cards at the end of the video. Blocks the content at the end of the video.
Great video btw
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another
Right at the end where you show the peak values the index cards appear over the video making it very hard to read the values.
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Right at the end where you show the peak values the index cards appear over the video making it very hard to read the values.
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transformer889
. 707 that is sq root of 2 divided by 2 it is not an arbitrary number it relates to the area of a unit sine wave
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. 707 that is sq root of 2 divided by 2 it is not an arbitrary number it relates to the area of a unit sine wave
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Keagan
Your videos helped me pass my Amateur Radio license tests. Thank you for such simple but informative content.
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Your videos helped me pass my Amateur Radio license tests. Thank you for such simple but informative content.
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Atlas
Hello. You really post cool stuff. Can u guide any training or tutorial any on battery technology.
Thanks
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Hello. You really post cool stuff. Can u guide any training or tutorial any on battery technology.
Thanks
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Hedwig
Are you made every country outlet with CORRECT voltage and frequency? SO CRAZY! NO ONE TALK ALBOUT THIS?
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Are you made every country outlet with CORRECT voltage and frequency? SO CRAZY! NO ONE TALK ALBOUT THIS?
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