Patent ID: 8390152

Claim:
A high-voltage DC generator for a particle beam apparatus, comprising: at least one Cockroft-Walton generator, at least one AC voltage source for supplying the Cockroft-Walton generator, at least one amplitude regulator for setting the AC voltage source, at least one step-up transformer, which is connected to the AC voltage source to supply the step-up transformer with an output voltage of the AC voltage source, at least one filter element for smoothing a high voltage generated by the Cockroft-Walton generator, at least one measuring resistor for supplying the high voltage smoothed by the filter element to the amplitude regulator, at least one capacitive divider for detecting fluctuations of the smoothed high voltage, at least one amplifier, which is connected to the capacitive divider to receive the detected fluctuations of the smoothed high voltage, wherein a controllable voltage source is provided, which is connected to the amplifier.