Abstract: A power supply comprising a transformer unit for transforming an AC voltage and AC current input on a primary side of the transformer unit into an AC voltage and AC current for supplying a load connectable to a secondary side of the transformer unit, a controllable switch controlled by a switch signal, and a processing unit. The processing unit is configured to generate the control signal based on a zero crossing information signal, further based on a set output voltage and/or a set output current, and further based on an actual output voltage and/or an actual output current.

Abstract: A power supply unit, preferably for a power analyzer, a power analyzer comprising a power supply unit and a method for operating a power supply unit, wherein the power supply unit comprises a feedback control unit controlling the output level of the voltage, the current or the power supplied to output terminals of the power supply unit on a preset value, means for sensing the actual output level of the voltage, the current or the power, respectively, and sending a signal representing the sensed output level to said feedback control unit, and means for detecting oscillations in the actual output of the voltage, the current or the power, respectively and for issuing an oscillation detection signal to the feedback control unit, wherein the feedback control unit is arranged to adapt at least one parameter value of the feedback control in response to a value of the oscillation detection signal.

Abstract: A power supply unit, preferably for a power analyzer, a power analyzer comprising a power supply unit and a method for operating a power supply unit, wherein the power supply unit comprises a feedback control unit arranged for selectively controlling the output level of the voltage or the output level of the current to output terminals of the power supply unit on a preset value, and means for sensing the actual output level of the voltage and current, respectively, and sending a signal representing the sensed output level to said feedback control unit, wherein the feedback control unit is arranged to autonomously prioritize or activate at least a first control loop for the controlling of the output level of the current or a second control loop for the controlling of the output level of the voltage, based on data generated within the power supply unit and/or externally generated data supplied to the power supply unit.

Abstract: A power supply unit, preferably for a power analyzer, a power analyzer comprising a power supply unit and a method for operating a power supply unit, wherein the power supply unit comprises a feedback control unit controlling the output level of the voltage, the current or the power supplied to output terminals of the power supply unit on a preset value, means for sensing the actual output level of the voltage, the current or the power, respectively, and sending a signal representing the sensed output level to said feedback control unit, and means for detecting oscillations in the actual output of the voltage, the current or the power, respectively and for issuing an oscillation detection signal to the feedback control unit, wherein the feedback control unit is arranged to adapt at least one parameter value of the feedback control in response to a value of the oscillation detection signal.