the charging circuits 13 and 14 provide conversion and rectification of the input voltage and electrically charge the capacitor block b of course the charging circuits 13 and 14 can be composed of voltage converter means such as inverters as described above the required power supply capacity is assigned to two power supply portions i e the capacitor blocks a and b one fourth of the total capacity is assigned to the block a while the remaining three fourths is assigned to the block b these ratios may vary according to the load and other conditions the capacitor block a is maintained at its fully charged level as faithfully as possible in this way the load is always supplied with a relatively constant voltage from the power supply of the lower internal resistance or the capacitor block a furthermore many power supplies i e the capacitors forming the block b which are easy to manufacture and have a high internal resistance are employed and so the volume and the weight of the whole storage capacitor power supply can be suppressed fig4 shows an example of the configuration of the charging control portion of the storage capacitor power supply shown in fig3 a comparator 21 compares the voltage developed across the terminals of the capacitor block a with the reference voltage vr and produces a signal which operates the charging circuit 15 when the reference voltage is higher resistors r 1 and r 2 divide the.