Power System Requirement is to develop a system that –Supplies required voltages and currents –Provide PS housekeeping measurements –Very low noise Present approach-- develop PS for T/V test that runs the electronics –Use VICOR recommended filtering (very likely inadequate for ANITA flight) After T/V test, work on noise reduction

Power System Components for T/V Test DC-DC Converter Box –7 boards at present—Room in box for an additional 2 boards +12V at 1A -12V at 1A +5V at 30A -5V at 2A +3.3V at 25A +2.5V at 16A +1.5V at 2A Instrument Power Box –One DC-DC Converter; Room for two more –Relays Only three used for T/V test –Charge controller- in box but not hooked up for test Cables 24 V Input Cable--IP Box to DC- DC Conv.Box; +24, +12, -12 cPCI Power Cable--DC-DC Conv. Box to cPCI; +5, +3.3, GND cPCI Power Cable--DC-DC Conv. Box to cPCI; +12, -12, +5, +3.3 Turf power Cable--DC-DC Conv Box to Turf; +3.3, +2.5, +1.5, -5 2 Housekeeping Cables—DC-DC Conv Box & IPB to HSK Cond box; HSK signals Cable into T/V made in Palestine Bus Bar Board Originally suggested by PD, but based on misconception of cPCI crate Not needed since cPCI crate provides excellent grounding

DC=>DC Converter Boards