The BOP High Power Supplies are true 4-quadrant programmable voltage and current power supplies. 4-quadrant operation means that they are capable of both sourcing and sinking power. These bipolar power supplies pass smoothly through zero to provide ± voltage and ± current. BOP's are very flexible power operational amplifiers that are used as magnet power supplies, and for testing photo voltaic cells and motors as well as RF and AC applications. The BOP High Power Magnet Power Supplies use switch mode technology for low dissipation and function as regenerative (recuperative) loads when connected to an active load.