Re: [EVGRAY] Re: AC to Cap Dump

Body

Hi Hob,
I have never done this test manually myself but your math looks correct to
me.
Sometimes just multiplying by F doesn't take into account the duty cycle or
pulse width on/off ratio.
In your case using straight C*V it's a specific quantity of charge pulsed
in at each single F point.

So in my humble opinion your system seems correct.

Gerry

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On Wed, Dec 6, 2017 at 4:26 AM, [email protected] [EVGRAY] <
[email protected]> wrote:

>
>
> Hi Ole,
>
> Nice plot, thanks. I'm quite confident that my math is ok. If I compare it
> to mechanics Vbat*Q would correspond to F*x which is work done. Similarly,
> comparing the capacitor to a spring, although not as obvious, Q=C*V would
> correspond to x=F/k, or to make the mechanical side familiar, F=k*x
> corresponds to V=Q/C since C corresponds to 1/k, a hard spring corresponds
> to a small cap. So, all put together, I think my formulas adds up. I'm
> fully aware that lots of energy in the cap gets lost, but right now I'm
> only focusing on whats going into the battery, not how effective the whole
> circuit is and what the losses are. I just want to know if pulsing a
> battery is something to pursuit, and it seems it is. Next step is to make
> it efficient.
>
> /Hob
>
> 
>