| 摘要 |
In the case of such a circuit arrangement, the problem exists of designing it such that it occupies only a small amount of space and can be produced using components having a long life. In order to solve this problem, a three-phase bridge rectifier (1) is provided whose DC-voltage side is connected to a zener diode (2) and whose one bridge arm (4) is connected directly to the one connecting terminal (neutral) of the AC-voltage power supply (R, neutral) and in the case of whose other bridge arms (5, 6), one (5) is connected via a resistor (7) and the other (6) via a phase-shifting switching element (8, 9) to the other connecting terminal (R) of the AC-voltage power supply (R, neutral). This makes it possible to supply the electronic apparatus (3) with a DC voltage with only a small residual ripple. <IMAGE>
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