| 摘要 |
A power rectifier circuit for power supply units, especially for switched mode power supply units, with a full-wave rectifier (D1...D4) on the supply voltage and, connected downstream thereof, a charging capacitor (CL), wherein the load resistor is at the output of the full-wave rectifier (D1...D4) and the charging capacitor (CL) is connected to the load resistor (SNT) through a diode (DA), with a controlled switch (ST) connected in parallel thereto, this switch being controlled by a control circuit (AT) so that it periodically closes at double the supply frequency in a time range at the zero crossings of the rectified half-waves. |
