RE: Res cap size charge

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

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Luke,

See:

http://www.pupman-dot-com/listarchives/2002/April/msg00038.html

Without losses ( A big leap!!...)

Cltr for a static gap:

Cltr (static gap) = pi/2 x Cres

For a sync gap:

Cltr (sync gap) = pi x Cres

pi = 3.14159265359....

Cheers,

         Terry



At 09:12 PM 1/21/2004, you wrote:

>I was looking around the list archives and making up a spread sheet for
>joules of the cap after charge time of 1/4 cycle and voltage on the cap
>and number of rc time constants in the 14 cycle etc............
>
>When I ran across a post on the archives pointing out the obvious. :(
>The voltage is always changing so the rc time constant thing kind of
>falls apart.
>
>Thanx for the info.
>
>
>Looking at the infor on the first link you sent I ran across something I
>would like some opinions on.
>
>Seems a good value for c would be 1.357 times c res.
>That is where you hit the 120bps mark.  Going below this obviously gets
>too close to c res and going above this slowes down the bps while also
>giving less real power on the cap.   Why is the rule of thumb them 1.6
>times c res for a static gap?
>Luke Galyan
>Bluu-at-cox-dot-net
.................