The property of a diode that lets it convert alternating voltage is used in a circuit called a:

1. A diode conducts in one direction and not the other. 2. That one-way behaviour can turn alternating into direct. 3. This property is used to rectify alternating voltages and the circuit is called a rectifier. 4. So the answer is a rectifier. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_