Re: Joules per bang...

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

Original poster: DRIEBEN-at-midsouth.rr-dot-com 

Scot,

Apparently, your math is off. 5.625 joules = 5.625 watts, therefore,
if we fire 5.625 watts per bang at 120 a second, that yields a much more
conservative 795 watts per second. Can't quite figure out where you
derived the 675 watts from the 5.625 joules :^/ My math ain't too hot
either, but I think I figured this'n out ;^)

David Rieben
Memphis, TN

----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
Date: Sunday, January 18, 2004 6:29 pm
Subject: Re: Joules per bang...

 > Original poster: BunnyKiller <bunikllr-at-bellsouth-dot-net>
 >
 >> this gives    5.625 J per bang     (considering that the cap is
 > fully
 > charged at  firing of the gap)   you should have 675W of energy
 > pulsing
 > into the primary...    and at 675W per bang at 120 times a second...
 > thats  81KW per second....   sooooo   either we arent getting full
 > charge
 > on the caps or my math is terrible....    this raises a new
 > question....    anyone have an answer???
 >
 > Scot D
 >
 >
 >
 > Tesla list wrote:
 >
 > >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 [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>
 > >
 > >
 >
 >
 >
 >
 >