Circuit arrangement for feeding the regulation and control devic

Details Circuit arrangement for feeding the regulation and control devic Circuit arrangement for feeding the regulation and control devic

1985-05-30

1987-02-10

Wong, Peter S.

Electric power conversion systems

Current conversion

With starting arrangement

323299, 323901, H02J 1100, H02P 1300

Patent

active

046427465

ABSTRACT:
In a circuit arrangement for energizing the regulation and control device (RS) of a regulated direct voltage converter (GW), a charging capacitor which supplies the regulation and control device (RS) is charged during the starting stage by the input voltage (U1) of the direct voltage converter and during the operating condition by an auxiliary voltage (UH) at the secondary side of the converter (GW). The change-over takes place by means of a threshold value switch (S), which switches off a constant-current source (U1,IC) that can be switched on and off as soon as the voltage at the charging capacitor (C) exceeds by a given amount a reference voltage (Uref). The circuit arrangement exhibits particularly low losses during the operating condition of the direct voltage converter.

REFERENCES:
patent: 4370701 (1983-01-01), Western
patent: 4497017 (1985-01-01), Davis

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