> Has anyone ever done anything like this? Is it even
> necessary or is there enough residual energy in the PS
> filter caps that brief interruptions (typically <10 sec) are not
> a problem?
I have an Astron RS-35 and there's not enough stored energy in the filters to
keep my Omni Six powered for more than a second or
two.
I once tried your idea with success in a different application but it required
the use of two steering diodes to isolate the RS-35
from over-charging the battery. A resistor in parallel with the battery's
steering diode can supply enough trickle charging current
without over-charging the battery. High-current Schottky diodes are best for
this application since there is less than 0.7 volts
dropped across the diodes.
-Paul, W9AC
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