In a display system power supply, what is the purpose of the inverter?

The correct choice highlights that the inverter produces the pulsed DC input voltage to the power transformer. This is a fundamental function of an inverter in power supply systems. By creating a pulsed DC, the inverter allows for the efficient conversion of low-voltage DC power into higher-voltage AC power through the transformer.

This pulsed DC is essential for driving the transformer, as transformers require alternating current (AC) to induce a voltage through their coils. The pulsing allows the inverter to alternate the current flow, thus facilitating the operation of the transformer and ensuring that the necessary voltage levels are achieved for the display system.

The other options do not accurately describe the inverter's function within the power supply context. While the inverter does have a role in voltage regulation indirectly, it specifically provides pulsed input to transformers, which is crucial for the conversion process and subsequent functioning of the power supply in a display system.