Talk:Universal Power Supply

"Rectifyers can be either passive schottky diode bridges, or active (IC-controlled) MOSFET H-bridges. Passive ones are cheaper, and ultimately more efficient for very high currents, while active ones are superior for low-medium-and-maybe-high currents yet more expensive. This design choice affects price, producability and simplicity."

This statement and the corresponding graph need better research. E.g. full-bridge Schottky diode rectifiers have a Vf_drop of at least 2*1V at high currents like those shown in the graph.