Triple Outlet Power Supply Lot 2807 - AGILENT The 3631a Is A Basic Dc Power Supplies Offer Essential Features For A Tight Budget. The Triple Output, 80 W, Gpib, E3631a Provides Small, Compact Size For Bench Use; Low Output Ripple And Noise; Built-In Measurements And Basic Programmable Features With Gpib And Rs232 Interface. This Clean And Reliable Supply Is Designed For General Purpose Applications; And Combines Convenient Benchtop Capabilities With Flexible System Features In A Compact, Multi-Output Package.