RE: HV Divider Schematic

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

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

At 11:52 AM 2/5/2003 -0700, you wrote:
>Original poster: "Mccauley, Daniel H by way of Terry Fritz 
><teslalist-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
>
>
>
>
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>The basic design concept shown in Dan's design is basically sound, but I
>have a few questions.
>
>ANSWERS:  The design does use very expensive, non-inductive high voltage
>resistors made by caddock.

Aha.. real expensive resistors (and the capacitors too, since they also 
need to take 10 kV)


>The design is rated for 60kV and all components are derated (according to
>NAVSO P-3641A deratings).
>I did make an error in my last post.  The probe is rated to 5MHz not 10Mhz,
>although for my typical
>application (radar transmitters - measuring cathode / collector voltages and
>ripple) the upper limit on
>frequency is only about 1MHz.  The final unit built is approximately 5" x 6"
>x 14" tall and potted.


OK, then, the AC component is very small compared to the DC it's riding on, 
so the low AC impedance of the divider won't cause a problem, particularly 
if you're looking at a relatively "stiff" (low impedance) power supply line.




>Although this is my design, it is not one I have done for my personal use as
>the final cost of this thing is
>well over a few thousand dollars.  I merely posted the design schematic as
>an example of what a good high voltage
>divider schematic looks like.  So far, this divider has proven to work
>extremely well.