RE: Joules per bang...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Luke" <Bluu-at-cox-dot-net> 

I will happily bow out.
I will stop the complaining.
thanx

Luke Galyan
Bluu-at-cox-dot-net

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Saturday, January 17, 2004 6:01 PM
To: tesla-at-pupman-dot-com
Subject: Joules per bang...

Original poster: Brett Miller <brmtesla2-at-yahoo-dot-com>

Luke,

Tesla list <tesla-at-pupman-dot-com> wrote:

  >Original poster: "Luke"

  >Thanx for the anaology since I don't have a grasp of the joules thing
I
  >will have to go figure it out. Guess im off on the next quest. :)
  >Can I ask why you say there is 7.5 joules per bang?

E (Energy in Joules) = .5 * C (in Farads) * V^2 (Voltage Squared)

Here's a piece of C source code you can compile in UNIX or Linux (using
gcc), dos (using bcc), or on Windows with Visual C++:

/*
   * joules.c -- find joules (W-s)
   *
   *  Copyright (c) 2000, Eddie Kovelan and Sam Goldwasser
   */

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

main()
{
    float E, C, V;

    printf("\n \
     ******************************************************************\n
\
     *  This program finds the energy (J) stored in a capacitor (uF)  *\n
\
     *  at a specified voltage (V).                                   *\n
\

******************************************************************\n");

    printf("\nEnter voltage (V): ");
    scanf("%f", &V);
    printf("Enter capacitance (uF): ");
    scanf("%f", &C);

    E = (.5 * C * (V * V));

    printf("\nTotal energy in Joules (W-s) = %4.3f\n\n", E * 1e-6);

}

If you need help with understanding why the equation governs energy
discharge from a capacitor, consult a general physics textbook.  Hope
this
helps...I have to say though, it's somewhat funny to me when you ask for

anecdotal information, then turn 180 degrees and complain about the
anecdotal nature of what you have been given.

-Brett

PS:  By the way.  I have used computer modeling to predict quantities
pertaining to both coil construction and coil behavior and found it to
be
strikingly accurate.  I have also done some calculations by hand on
paper
which tend to agree with the machine assisted calculations.  I don't
know
about the 1000 some odd lurkers on the TCML, but most of the active
members
are doing real science here.  I don't really see how your lemmings
analogy
fits in.

Maybe I can get lucky and be successful in explaining what others on the

list have tried an failed, attempting to get through to you.  The
"consensus" on the list that seems to bother you has come (especially
over
the last 5 years) in large part from painstakingly tedious emperical
research from experienced coilers....many of whom have significant
knowledge of engineering and physics.  No one is expecting you to take
anything on "faith".  All the emperical data you could ask for is here
in
the archives and all the experience in the world is waiting for anyone
who
is willing to stop yakking and actually do some coiling.  It's not that
I'm
trying to sound abrasive here, but it seems like a few times you've
complained about the list for some reason.  I'm going to call you on it
since I've been reading this list for over 5 years and have had the
priveledge of witnessing some of the greatest minds amateur science has
ever hosted.

-Brett

hot-streamer-dot-com/brett


  >Luke Galyan
  >Bluu-at-cox-dot-net
<SNIP>