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Re: Capacitor C/Peek
At 04:25 AM 10/24/96 +0000, you wrote:
>From pierson-at-msd26.enet.dec-dot-comWed Oct 23 22:20:11 1996
>Date: Wed, 23 Oct 96 20:54:06 EDT
>From: pierson-at-msd26.enet.dec-dot-com
>To: mail11: ;
>Cc: pierson-at-msd26.enet.dec-dot-com
>Subject: Capacitor C/Peek
>
>
>I was pondering something exceedingly basic, and getting phunny numbers.
>Specifically, what energy is in the cap in the primary tank?
>
>I keep getting a number which seems small, someone check my math:
>
>
> Joules == watt-seconds == (C(Ve2))/2
>
>right?
>
> C= 0.025 uFd (for the CP caps, just to pick a number...
> V=10,000 V (to pick another)
>
>Rolling this together:
> ((2.5)*(10e-8)*(10e4)e2))/2= 1.25 Joules
>
>Izzat right?
>I was expecting a larger number....
>Am i dropping a decimal somewhere???
>
>==============================
>As to Peeks' Tables and his book. I have a copy (olde) of the book, If anyone
>wants to figger out how to get it reprinted... (HV Press? That reprint shoppe
>in the midwest i can't think of the name of?)
>
>HOWEVER, much of Peeks' results were reported in papers before the (then)
>AIEE (now IEEE), so a good library might have the relavant AIEE (IEEE)
>transactions. Peek was studying lighting effects, so his work did extend up to
>'coilish' frequencies.
>
> regards
> dwp
>
Your calculations are correct. The 1.25 joules of electrical energy can
kill you as I mention in my book Tesla Coil Construction Guide.
Jack C.