> Peter Chadwick wrote:
> >
> >How long does the excess voltage have to exist across the in-socket
> >capacitor before it goes? Intuitively, nanoseconds seems unlikely
> >(and across 1000pF or so, it takes a lot of doing to get nanosecond
> >rise times) while tens of milliseconds appears pretty certain to
> >cause breakdown.
> >
> Assuming that the arc strikes extremely rapidly, the rise time is
> going to be of the order of RC, where R is the glitch resistor and C
> is the bypass capacitance. That comes out to a few tens of
> nanoseconds.
Assuming you have a big blocking capacitor and bypass capacitor,
it helps start the glitch going.
The RF chokes and tank components are the major components
that limit initial current that charges the screen bypass.
73, Tom W8JI
W8JI@contesting.com
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