The maximum load current should not exceed the smallest rated output current, when selecting power supplies with different current ratings. Any number of power supplies can be connected in series. System designers must note that an output voltage > 60Vdc will not meet SELV requirements, and can be dangerous. Under no circumstances the total volt

Some possible combinations could be: 1. 24Vdc@30A power supply in series with a 24Vdc@18A power supply can be used as a 48Vdc@18A power supply. 2. 12Vdc@60A power supply in series with a 12Vdc@37A power supply can be used as a 24Vdc@37A power supply. 3. 18Vdc@40A power supply in series with a 6Vdc@68A power supply can be used as a 24Vdc@40A power s

Here are the following benefits: 1. Efficient power utilization limited only by the output voltage accuracy of each supply. 2. No circuits required to control voltage or current sharing between the supplies. 3. No sensitivity to design or construction of conductors connecting supplies in series. 4. Easily designed with any combination of power supp