Please consider the following circuit where voltage sources V1 and V2 are regulated linear DC power supplies:
From the simulation V1 will sink 2.5A of current provided by V2.
Questions: What will happen to V1 in this situation? Would it go into some sort of default operation or will it "happily" sink the current? How does this change for switch mode supplies?
Now suppose we eliminated resistor R1 such that V1 is directly shorted to 10V.
Questions: Would this be considered an "overvoltage" condition for V1? What is the response of V1? I understand that decent supplies will have overvoltage protection which will shutoff its output (via SCR, etc), but does it protect for conditions where the DUT is higher voltage that the regulated output?