Which device converts AC to DC?

Which device converts AC to DC?

• A. Rectifier
• B. Inverter
• C. Transformer
• D. Converter

Answer: (A)

Rectifier is the device that converts alternating current to direct current. It uses diodes to allow current to flow only in one direction, turning the changing polarity of AC into a pulsating DC waveform. With additional filtering components like capacitors, that pulsating DC can be smoothed into a steady DC supply, which is commonly used to power signaling equipment. Inverters do the opposite, converting DC to AC. Transformers operate only with AC and change voltage without producing DC. The term converter is broad and not specific to AC-to-DC conversion.

Rectifier is the device that converts alternating current to direct current. It uses diodes to allow current to flow only in one direction, turning the changing polarity of AC into a pulsating DC waveform. With additional filtering components like capacitors, that pulsating DC can be smoothed into a steady DC supply, which is commonly used to power signaling equipment. Inverters do the opposite, converting DC to AC. Transformers operate only with AC and change voltage without producing DC. The term converter is broad and not specific to AC-to-DC conversion.