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Capacitor Discharge Time Formula Euler!

  • Thread starter NickTesla
  • Start date
  • #1
30
3
I would like to understand how the Euler constant elevated to fractional exponent gave this result? 958mV someone please!?
2a9zigh.png
 

Answers and Replies

  • #2
Svein
Science Advisor
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You did not give enough information for us to check everything, but the calculation is correct (I checked it on my old HP calculator).
 
  • #3
30
3
It is because my doubt is the fractional exponent, do not know why has this result!
958mV no final entendeu!? Obrigado!
 
  • #4
30
3
Personal My question is in Euler's constant raised to a fractional exponent!
Why and how ?? I do not know calculate HP, it's good we mastered without having to use HP,

I have a teaching video, but honestly I still do not understand if you want to see the video? I have!
 
Last edited:
  • #5
cnh1995
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Charging of a capacitor is an exponential
event. Voltage across capacitor rises exponentially as
Vc=Vf(1-e-t/T). Time t is in the exponent, hence the part e-t/T is responsible for the exponential increase in voltage w.r.t time.
 
  • #6
Svein
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OK. Let us take it in steps:
  1. [itex]\frac{10}{47}= 0.212765957 [/itex]
  2. [itex]e^{-0.212765957}=0.808345302 [/itex]
  3. [itex]1- 0.808345302=0.191655 [/itex]
  4. [itex]5 \cdot 0.191655 = 0.958273 [/itex]
 
  • #7
30
3
Yes! , I understand, but using numbers,
Watch this video!
 
  • #8
30
3
OK. Let us take it in steps:
  1. [itex]\frac{10}{47}= 0.212765957 [/itex]
  2. [itex]e^{-0.212765957}=0.808345302 [/itex]
  3. [itex]1- 0.808345302=0.191655 [/itex]
  4. [itex]5 \cdot 0.191655 = 0.958273 [/itex]
 
  • #9
30
3
https://www.youtube.com/watch?v=JHHikLqJuYk
 
  • #10
30
3
OK. Let us take it in steps:
  1. [itex]\frac{10}{47}= 0.212765957 [/itex]
  2. [itex]e^{-0.212765957}=0.808345302 [/itex]
  3. [itex]1- 0.808345302=0.191655 [/itex]
  4. [itex]5 \cdot 0.191655 = 0.958273 [/itex]
Sven Wonderfully Thank you!
 
  • #11
30
3
  • #12
30
3
Personally, I'll be honest, here in South America (Brazil) I doubt that the Brazilian has a video explaining speaking Neper calculation on youtube to calculate the potentiation, constant = e ^ -0.212765957,
I doubt (I dúvi [do] D + O = DO = DEODO talking!). Kkk! I doubt DEODO is when we doubt very much! is the Brazilian way of speaking! My God there are only understand potentiation, that's all, and I going crazy, studying (Mantissa) studies (Mantissa) kkkk lol (mathematics: decimal part of a logarithm) !:book::micoscope:
(Matematicas: decimal part of a logarithm)! I wanted the help of North America, if possible help from the American continent LOL kkkk:oldbiggrin::partytime::bow::headbang::headbang::headbang:

only thing i got! and I get it! Was this here!
but not taught 10 ^ 0,3010

how does it do??:headbang::headbang::headbang::oldgrumpy::oldgrumpy::oldgrumpy:
 
Last edited:

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