1. The primary considerations are the voltage and current ranges of the switching power supply, which are easily determined by calculating based on the circuit's power consumption. It is also important to consider the extremes of high and low supply voltages for testing. 2. Most fixed power supplies allow output voltage variations within ±10%, and if this does not meet the circuit requirements, a power supply with adjustable output or a wider range of variation can be chosen. 3. If this power supply is used to power a modular unit, 75% to 90% of the required current for the unit can be provided by a single power supply, with the remaining portion being supplemented by connecting two or more power supplies. Aviation ground power 2, 36V aviation power supply 1, 400HZ variable frequency power supply 7, 115/200V power supply 2, 27V DC power supply 5, 400HZ power supply 12, aviation power supply.
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