Power System

1. 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

2. Power System Components for T/V 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 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

6. DC=>DC Converter Boards