FIG. 6 depicts a stabilized power s

FIG. 6 depicts a stabilized power supply incorporating the invention DC/DC converter. Terminals 61,62 are connected to an AC power supply line and terminal 63 is connected to common or ground. The line supply is filtered by an AC line filter 5 which comprises capaci tor C51 connected between the AC lines, common mode chokes L1,Lhd 2, grounding capacitors C52,C53 which are commonly connected to ground terminal 63. Capacitors C54 and C55 are connected in parallel with common mode chokes L1,L2 and have the same capacitance value, which value is selected so that the resonance frequency, in combination with the inductances of the common mode chokes L1, L2, falls within a predeter
mined range.
In general, the capacitance values of the capacitors
C54,C55 are selected in relation to the capacitance values
of capacitors C52,C53 so as to meet the following condi~
tions: