CAEN has developed a new line of fully independent Desktop and Rack-Mount High Voltage Power Supplies. Offered with various V/I output configurations, CAEN Desktop and Rack-Mount Power Supplies are flexible enough to bias a wide range of detector types.CAEN has recently developed a new High Voltage Power Supply family in PCB form. These PCB HV Power Supplies are particularly well suited for astroparticle applications in which an array of detectors is spread over a very large area. For such applications the traditional centralized approach to detector bias becomes unwieldy.