1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

How to calculate joules?

Discussion in 'Mathematics and Physics' started by Krumlink, Sep 5, 2007.

  1. Krumlink

    Krumlink New Member

    Joined:
    Aug 10, 2007
    Messages:
    2,080
    Likes:
    20
    Location:
    Michigan, USA
    I was wondering how I could calculate joules using the formula below

    E=1/2*V^2*C

    E= Energy in joules
    V= Working voltage
    C= Capacitance in farads

    What I really want to know is what the symbol ^ means and how to use it.

    Thanks!
     
  2. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

    Joined:
    Apr 17, 2007
    Messages:
    7,259
    Likes:
    961
    Location:
    Loveland, CO USA
    ONLINE
    E=1/2*v^2*c
    E=1/2*v*v*c
    V^2=v*v
     
  3. Krumlink

    Krumlink New Member

    Joined:
    Aug 10, 2007
    Messages:
    2,080
    Likes:
    20
    Location:
    Michigan, USA
    well what does the symbol ^ mean rofl!
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. CheapSlider

    CheapSlider Member

    Joined:
    Mar 14, 2007
    Messages:
    151
    Likes:
    0
    Location:
    London, UK

    ^ = exponentiation = power of
    EG:

    A^2 = A x A

    B^3 = B x B x B

    C^-2 = √C
     
  6. David James

    David James New Member

    Joined:
    Jul 26, 2007
    Messages:
    54
    Likes:
    1
    Location:
    East Yorkshire, UK
    Yes

    Yes

    No.

    C^-2 is 1/(C^2)

    √C is C^0.5
     
  7. Hero999

    Hero999 Banned

    Joined:
    Apr 6, 2006
    Messages:
    14,902
    Likes:
    79
    Location:
    England
    That's wrong.

    C^-2 = 1 / (C^2)

    √C = C^(1/2)

    Hell, I prefer Latex, it makes thing so much easier to to read.



     
    Last edited: Sep 8, 2007
  8. Krumlink

    Krumlink New Member

    Joined:
    Aug 10, 2007
    Messages:
    2,080
    Likes:
    20
    Location:
    Michigan, USA
    I hooked up my ultrahigh capacitance cap bank and it has 10 joules of power and thats only running it at 14Volts :D

    2 caps with 19000uf and 40V
    2 caps with 26000uf and 30V

    All of them can handle an additional 10V.

    Then running at 30V, it has 40Joules :D :D

    When I discharge them, it goes KAPOP!
     
  9. kscience

    kscience New Member

    Joined:
    Dec 30, 2008
    Messages:
    1
    Likes:
    0
    lulz

    I just got a capacitor to put on ebay; it is 2,835uf at 60,000 volts.

    The math makes my head hurt; it is spec'd at 5103 joules.
     

Share This Page