Patent ID: 6525600
Filing Date: 2003-02-25
Classification: H03H,H03J

Abstract:
A circuit configuration, comprising:an AC voltage input terminal and an AC voltage output terminal; a plurality of frequency domain filter paths defined between said AC voltage input terminal and said AC voltage output terminal, and connected in parallel between a common first node and a common second node both coupled to a DC voltage connection; each of said frequency domain filter paths containing at least one bandpass filter connected in series with a first diode and a second diode connected in opposite forward direction from said first diode; said at least one bandpass filter including: a bandpass filter input and a bandpass filter output; a series circuit connected between said bandpass filter input and said bandpass filter output, said series circuit being formed of a first capacitor, a first parallel LC element connected to said first capacitor, a second capacitor connected to said first parallel LC element, and an inductor connected to said second capacitor; a second parallel LC element having a first connection connected to a node between said first parallel LC element and said second capacitor and a second connection coupled to a fixed reference-ground potential via a third capacitor; and a third parallel LC element having a first connection connected to a node between said second capacitor and said inductor and a second connection coupled to the fixed reference-ground potential; each of said frequency domain filter paths containing a switching unit for switching said first and said second diode in said frequency domain filter path; a third diode having a first terminal connected to said first node and a fourth diode having a first terminal connected to said second node of said frequency domain filter paths, such that a respective cathode of said third diode and of said fourth diode is connected to anodes of said first diodes and said second diodes, respectively; a load-dependent DC voltage source having a first connection and a second connection; and said third diode and said fourth diode each having a second terminal respectively connected to said first connection and said second connection of said load-dependent DC voltage source.