Why do all 12v power supplies produce triple output? All power supplies that I see at Amazon www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=12v%20power%20supply%2030a or Aliexpress www.aliexpress.com/af/12v-30a-power-supply.html convert 220v AC into triple 12v
Does it mean that these are 3 isolated and independent 120w voltage sources? How do I get single 360w voltage source? The Commutation cell principle says that I cannot simply physically wire all 3 output contacts together, right?