Re: DC H-Bridge Measurements

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Steve,

I didn't realize both volts and amps were measured numbers. Ok, that takes
into account the charging
circuit, absolutely. Interesting that between 300 and 700bps, only 142W
change in power throughput is
measured. I'm incline to agree that doubling appears "not" to be working at
higher bps.

Take care,
Bart

Tesla list wrote:

> Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<youngs-at-konnections-dot-net>
>
> Bart,
>
> I provided the DC power supply volts in my last posting, and of course it
> does drop down (from 8.6 KV at 200 BPS to 6.4 KV at 700 BPS).  Nevertheless,
> if you do the calculations,  (0.5 * 27 nF * (6.4KV * 2)^2 * 700 BPS) you get
> 1548 watts, but the measured power (6.4 KV * 170 ma) is only 1088 watts.  So
> there must be some residual voltage in the caps when they get
> reverse-charged, plus what gets wasted heating the gaps.
>
> I agree - it would be nice if more people would publish some real data to
> study.
> --Steve