Which x-ray generator creates a waveform in which the voltage fluctuates from the maximum voltage to zero volts with every pulse?

The waveform described in the question represents a specific characteristic of single-phase full-wave rectified generators. In this type of generator, the x-ray output involves a fluctuation in voltage from the peak voltage to zero volts with each pulse. This leads to a waveform that oscillates more dramatically compared to other generator types, resulting in significant variations in the x-ray beam quality and quantity with each cycle.

Single-phase full-wave rectification effectively harnesses both halves of the AC cycle, converting them into usable x-rays but still presents a periodic drop to zero volts, leading to fluctuations in the output. These fluctuations impact the average beam quality, affecting factors such as patient exposure and image clarity in radiographic films.

In contrast, the other generator types exhibit more stable output waveforms, with three-phase systems generating higher average voltages and less fluctuation due to their structure, which utilizes multiple phases to maintain a more continuous voltage supply.