Connecting Power Supplies in Series: Can It Be Done?

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SUMMARY

Connecting two computer power supplies in series to increase voltage is not feasible due to the grounding configuration of power supplies. Each power supply has its output voltage referenced to ground, meaning that when attempting to connect them in series, the ground points are tied together, preventing the desired voltage increase. Therefore, using power supplies in this manner is not recommended.

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is it possible to connect two computer power supplies together in series to increase the voltage like with batteries or does that not work with power supplies?
 
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No, that would not work.

This is because each of the voltages you can get out of such a power supply has one side returned to ground.

So, on the two power supplies, all these ground points are joined together and you can't put them in series.
 
thanks
 

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