> I'm getting ready to lay out the HV rectifier board for my YC156
> project, and it occurs to me to wonder if anyone has ever really heard
> HV rectifier "white noise" in the receiver? It would be simpler to
> forget about the per-diode bypass caps and just bypass the output as it
> leaves the board. The supply will be housed in a separate cabinet from
> the RF deck, but connected of course with bypassed leads for HV, (SHV
> connectors) 110VAC and control signals.
I thought the reason for capacitors and resistors paralleled with the
series diodes was to help equalize the voltage division across the
diodes, and reduce the chances of an unequal voltage division, exceeding
the voltage rating of one of the diodes. I did not think it was for
noise reduction. I had also heard that it was more important with
earlier manufactured diodes, due to lower voltage ratings and not quite
as good matching from one diode to another. With more modern production
diodes the voltage division tended to be more equal, reducing the need
for the resistors and capacitors.
DE N6KB
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