Patent ID: 6969975

Claim:
A circuit arrangement for power factor correction having an input, to which an input voltage (u g ) can be connected, the input comprising a first and a second connection terminal; a first switching element (Q 1 ) having a control electrode, a reference electrode and a working electrode, the control electrode being coupled to a current source and the reference electrode being coupled to a reference potential; an inductance (L 1 ), which is coupled between the working electrode of the first switching element (Q 1 ) and the first connection terminal of the input; an output, at which an output voltage (u z ) can be provided, the output comprising a first and a second output terminal; a first diode (D 1 ), which is coupled between the working electrode of the first switching element (Q 1 ) and the first output terminal of the output; a second switching element (Q 2 ) having a control electrode, a reference electrode and a working electrode, the reference electrode being coupled to the reference potential, and the working electrode being coupled to the control electrode of the first switching element (Q 1 ); a first capacitor (C 1 ), which is coupled between the control electrode of the second switching element (Q 2 ) and the working electrode of the first switching element (Q 1 ); and a first nonreactive resistor (R 2 ), which is coupled between the first connection terminal of the output and the control electrode of the second switching element (Q 2 ).