SCHALTUNGSANORDNUNG ZUR VERSORGUNG DER REGEL- UND STEUEREINRICHTUNG EINES GEREGELTEN GLEICHSPANNUNGSWANDLERS

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 d...

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1. Verfasser: LOESEL,WALTER
Format: Patent
Sprache:ger
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Zusammenfassung: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.