llustrates
the simulating open-loop converter
response waveforms
of
a normalized
X-ray
tube-voltage
V*,,"*
in
case
of using quality factor
Q
as
expressed
in
Table
2
in
case
of
heavy load
at
Q=
1
.O
and
light
load
at
Q=O.
1.
Higlier
switching frequency
is,
shorter the
rise-time is.
however, an
overshoot
is
ease
to
generate; on
the
other
hands.
in
case
of
lower switching
frequency,
though the overshoot
does
not
happen, the rise-time beconies
longer.
Once the overshoot
causes, the voltage charged
in
the equivalent capacitance
C'o
of
the
high-voltage
DC
cables
is
going
to
discharge through
only
the
load
circuit,
and
the converter output voltage can
not
longer
be
controlled while the overshoot causes. Thus,
the
output voltage
of
this
converter
is
gradually attenuated
after
an
overshoot behavio