many times we use the note inverter to point a gadget that converts DC to AC, yet sometime also very similar units are used to bypass any incorrect way, in which case we many times call them 'synchronous recifiers'. many times, an inverter or a synchronous recifier contains digital switches to connect the DC aspect to the AC aspect with replacing polarity. It first connects it one way, then the different, at a % it really is determined by the frequency of the AC aspect. (look up 'h-bridge' circuit for information). Athough the different solutions say no, we may be able to truly use those type of circuits to transform from both AC to DC and also any incorrect way from DC to AC. yet that being reported, in relation to AC to DC conversion, we many times reserve syncrononous rectifiers/inverters for top powered applications, for problem-free use we use easy diodes. For DC to AC although we cant use purely diodes because the switches, and we choose another units. we many times use thryristors (extreme means applications) or means MOS transistors (small and medium means applications). Any voltage conversion will be absolutely performed on the AC aspect by a transformer. on occasion inspite of the actuality that we would use a DC votlage conevrter on the DC aspect. shall we actually have 2 synchronous recifiers with a transformer in between. this can enable DC to DC conversion, AC to AC conversion, or DC-AC or AC-DC, purely by switching the the switches in the proper series.