Re: DC power

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

And the diode doesn't need to be a particularly fancy one either.. It just
has to carry the average RMS charging current, which is (hopefully) equal
to the transformer output current... A MOT diode would probably do quite
nicely.  

If the inductor is small, the peak current might get high, so you'd need to
watch the ratings on the diode.

I think Richie Burnett's site covers this in fair detail..

> > work.
> > --Steve
> 
>         Haven't really been following this, but wanted to point out that the
> standard DC resonant charging circuit for radar pulsers uses an HV
> blocking diode in series with the (tank capacitor side) of the
> inductor.  It the sparking rate is below a critical value, the tank
> capacitor is charged to twice the supply voltage (at least after the
> first discharge) and just "sits there" waiting for the next switch/RG
> closure.  Very high power modulators using rotary gaps were widely used
> during WW2, as they were relatively cheap and relible and had quite
> adequate timing stability for non-coherent pulse radar work.  Triggered
> spark gaps of various kinds, operating both in air and with
> high-pressure gas fill in a sealed tube, were also quite common.
> 
> Ed