> I believe the purpose of the capacitors is to make sure voltage is
> distributed evenly during transients, since the smallest acceptable
> resistor value may not be enough to charge the junction capacitance of th=
e
> diodes quickly enough to prevent breakdown.
>
> How short is the pulse? Are the diodes fast enough?

I agree. The design approach is probably documented somewhere. In general,
I think the resistors need to be small enough to swamp out the reverse
leakage current. Similarly, the capacitors need to be large enough to
swamp out the junction capacity.

Harold

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