AC Voltage Calculation - Vrms Vmax Frequency
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- Опубликовано: 15 май 2024
- Learn how AC voltage varies with AC since wave and how to calculate the Vrms root mean squared, vmax, peak voltage, the frequency and voltage of different countries.
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Correction: 1:26 Audio should say "multiply by 0.707" not "divide by 0.707" graphics are correct.
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Why ac current is sine wave?
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.
True, but you can just pause right before that.
Happy Engineer's day 😁❤️
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@@user-op8fg3ny3j it's on 15th September in India 🇮🇳
In Poland 15 th of August. Power enegineer' s day.
I've been an electrician for 5 years now and i pretty much skipped the school part and just learned in the field mostly. I will be binge watching all of your videos 3 or 4 times each until i know all of this. Thank you sir. You are a proffessor at RUclips University and i will get my degree in your class.
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.
could divide by sqr2, Glad I wasn't the only person who caught this.
@@MichaelMantion Likewise. Glad my brain still handles this stuff readily enough.
Well spotted. Errors are frustrating but do happen, apologies for that. I'll add a note in the video description.
@@EngineeringMindset I used to do a lot of technical proof reading. It makes you notice little things like that :) Great videos BTW.
Your videos helped me pass my Amateur Radio license tests. Thank you for such simple but informative content.
Great job!
Useful video for understanding basics of an AC. Nice!
Glad it was helpful!
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.
There's a few ways to do it but I used some variable transformers and an 12V car inverter. Inverter is needed for the frequency change.
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!
My favorite electrical channel like these short videos
Glad to see your videos when received notification.
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
Hello sir, I am from India and we love your Videos ♥️♥️
Hello, great to hear. If you speak Hindi, we also have a Hindi channel too: ruclips.net/channel/UCg4k338hz9U8jnD5SXPO5jQ
It is the place to get knowledge about all around the world electrical system.👍
Happy engineering day and thanks for explaining voltage calculation
Cool explanation, plz make a video about Operational amplifiers
Yea that would be great, there is no video on RUclips that I found that can explain it better...please take the challenge.
@@bonfacemuthuri9840 yes dude..
I think EEV Blog did one.
Are you made every country outlet with CORRECT voltage and frequency? SO CRAZY! NO ONE TALK ALBOUT THIS?
Took a couple of hours to build. Just using some variable transformers and a power inverter. Hardest part was getting the outlets shipped across the world.
@@EngineeringMindset That impressive man! I never saw anyone do that before!
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.
saludos desde mexico city..muy interesante la teoria y medicion ........
Thanks Paul
Thank for your good video.
It's learning video for me
I'm coming sir. 👍👍👍💪💪
It's good simulation. 👍👍👍👍👍
Happy engineer's day ❤️❤️❤️video is very good and understandable video 😍😍😍
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.
Hello. You really post cool stuff. Can u guide any training or tutorial any on battery technology .
Thanks
We have covered lead and alkaline batteries previously, please see our channel videos
Thank you so much for this video
Most welcome 😊
@@EngineeringMindset Are you from UK
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great video
#Thank you#
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.
Thnx Sir
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.
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
RMS voltage is equivalent to DC voltage. The average DC voltage would be 120V for a heating element to produce a certain temperature, the average AC voltage would be 0V for the same heat output, because of the peaks are positive 170V and negative 170V so cancel out. So they found the RMS voltage which gives 120V
Good Sir vdo
Your vidoes made me a Engineer
Im kurdish 😍❤
Vedio you the best
Glad we use 120V here in the US. Much safer level of voltage to work with for electricians.
Could you make a circuit board with a microcontroller?
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...
hi pls where can I buy digital oscilloscope multimeter
Check our new Multimeter tutorial out ➡️ ruclips.net/video/4lAyzRxsbDc/видео.html
Great sir.... But i want buy this graphical multimeter.... Can you help me?
Check our new Multimeter tutorial out ➡️ ruclips.net/video/4lAyzRxsbDc/видео.html
We want circuit design series back
Lots more coming soon
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!
I don't know for sure, but it may be because the neutral wire is (usually) also connected to ground, so if you measure the potential between neutral and ground it is zero.
Also if you use one of those cheap screwdrivers with a small lamp and a resistor inside, that lights up when you touch the live wire. These only work because a small current, limited by the resistor, will flow from live wire through the lamp, through the resistor and through your body to ground. When you touch the neutral wire, there will be no current flow, as the potential on both ends is the same.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Waiting for the Synchronous Motor video
Should do a 3 phase version of this.
Here you go ruclips.net/video/qthuFLNSrlg/видео.html
HAPPY ENGINEERS' DAY🔥🔥PROUD TO BE AN ENGINEER ❤️
2:27 Suriname 🇸🇷 actually uses a frequency of 60 Hz
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?
Make one for DC
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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
Happy Indian Engineers day!! ❤❤❤❤❤❤
Thank you, do you know we also have a Hindi channel? ruclips.net/channel/UCg4k338hz9U8jnD5SXPO5jQ
Happy Engineers day✌🏻️🥰❣️
Isn't the UK 240VAC?
Officially no it's 230V but it has a wide tolerance. For example in my home I read about 242V in average
@@EngineeringMindset huh, always thought EU was 230 and UK was 240...in fact so did the Wikipedia page I got that info from a long time ago...which is now different lol...guess I read that at the wrong time.
It used to be, you'll still see many signs up saying "danger 240V"
@@EngineeringMindset TIL, thanks for the reply
There is an error in 1:29 when you said "divide by 0.707" instead of "multiply by 0.707"
To go from RMS (240 Volts) to peak you would divide by 0.707 to get 339.something?
I've added a note in the video description
Spot on! I noticed that error too. You saved me from a reply.
Surinameee 60Hz
this is just a re-upload of a portion of a previous video......
Sure is, problem was that if you searched for AC voltage calculations, it wouldn't appear because its within a separate video. So by extracting it we can help people find what they need much easier. Additionally the extra views help us fund new videos to keep teaching you guys for free.
@@EngineeringMindset Oh... Okay then thanks.
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