Power Supply Components

Here is a description of the shipboard components we are zeroing in on. On Craig's request, everything will be running of his 32v bank of batteries. There is some 12v available but our preference is to have everything on one source to minimize complication and wiring.

So, 32v will run to an inverter for 115vac, something that can be supplied by the shore tie while inport. This ac will power a UPS that will reduce noise from either source and keep the system in operation during the switch-over at departure and return. The UPS will power the computer and a small printer if Craig wants hard copy. It will also power two 115vac to 12vdc power supplies, one for the Inmarsat (9 Amps at transmit) and one small unit to power the IMET, Met, and gear sensor.

So here are the specs. for now.

                Item                    Supplier           Price
 600W Inverter, true sine wave,         Exceltech           $528
     XP-600, 12-108 vdc input

 425W UPS, Smart 700 NET (45 min)    Global (Tripp Lite)     299

 STC 14 Panel mount PC, Pent. 233 MHz  CyberResearch       4,095
     13.8" 1024 x 768 screen, 2.1 GB,
     NEMA 4 front panel

 Upgrade to 128 mb ram                 CyberResearch         300

 OIX 4107 NEMA 4 keyboard w/touch pad  CyberResearch         295

 12vdc x 25A power supply                H & R Co.            70

 12vdc x 1.5 A wall adapter              H & R Co.            13

Contributed by: Clifford Goudey
Last modified: July 22, 1999