1. Consider the voltage and current ranges of switching power supplies; these are two easily determined parameters, calculable based on the circuit's power consumption. Also, consider the extreme values of high and low supply voltages. Aviation ground power 2, 36V aviation power 1, 400Hz variable frequency power supply 7, 115/200V power supply 2, 27V DC power supply 5, 400Hz power supply 12, aviation power
Most fixed power supplies allow the output voltage to vary within ±10%, and if this is still not sufficient to meet circuit requirements, adjustable output or power supplies with a wider range of variation can be selected.
If powered by this source for a modular setup, 75% to 90% of the required high current for the device is supplied by a single source, with the remaining portion provided by connecting two or more additional sources in parallel.
