What converts AC current to DC?

What converts AC current to DC?

• A. Transformer Rectifier unit.
• B. Inverter module.
• C. Diode dynamic converter.
• D. AC/DC switcher.

Answer: (A)

Converting AC to DC is done through rectification, where diodes steer current so it only flows in one direction. A transformer is often used before rectification to adjust the voltage level and provide isolation. The Transformer Rectifier Unit combines both parts: a transformer to step the AC voltage and a rectifier stage to produce DC for the aircraft’s DC buses. That’s why it’s the correct choice—the device explicitly performs the voltage change and the conversion from AC to DC in one unit. The inverter module, by contrast, turns DC back into AC, not the other way around. A term like diode dynamic converter isn’t a standard description for a rectifier setup. An AC/DC switcher implies a switching power supply that converts AC to DC, but in aviation power systems the common hardware for this job is a transformer rectifier unit, not a switch-mode device.

Converting AC to DC is done through rectification, where diodes steer current so it only flows in one direction. A transformer is often used before rectification to adjust the voltage level and provide isolation. The Transformer Rectifier Unit combines both parts: a transformer to step the AC voltage and a rectifier stage to produce DC for the aircraft’s DC buses. That’s why it’s the correct choice—the device explicitly performs the voltage change and the conversion from AC to DC in one unit.

The inverter module, by contrast, turns DC back into AC, not the other way around. A term like diode dynamic converter isn’t a standard description for a rectifier setup. An AC/DC switcher implies a switching power supply that converts AC to DC, but in aviation power systems the common hardware for this job is a transformer rectifier unit, not a switch-mode device.