3 ms·
124VDC on the ISS: I wonder if that means that all electrical items on the ISS have to made to operate with that voltage? I don't think they would want to wast
by mikece 5y ago
124VDC on the ISS: I wonder if that means that all electrical items on the ISS have to made to operate with that voltage? I don't think they would want to waste power making heat in order to change 124VDC to 12V, 6V, 9V, 20V, etc.
- rektide 5y agoI'm expecting this is just the bus power to the "modules", the different sections of the ISS. I rather expect most modules probably have a down-converter & run off something like 12, 24, or perhaps the shuttle's 28Vdc. ISS isn't afraid to waste some power. The photovoltaic arrays send power to a "sequential shunt unit", which adds resistive load to maintain a constant voltage/current from the array. Admittedly, not applicable when running off battery, but it shows that power efficiency is not really the priority.