The bidirectional DC laboratory power supplies of the PSB 10000 series from EA Elektro-Automatik are two-quadrant devices that can function both as a power supply and as an electronic load. In load operation, the DC power supplies operate regeneratively and feed energy back into the local power grid with an efficiency of over 96%. The PSB 10000 series includes single-phase and three-phase devices that can accommodate nearly all grid voltages worldwide due to their wide input range. The DC voltages and currents are application-oriented, ranging from 0 - 10 V to 0 - 2000 V and from 0 - 6 A to 0 - 1000 A in a single device.