In circuit #1 I showed typical adjustable power supply usage it can limit voltage and current, all good.
It got me thinking. Let's say due to some reasons I can't replace battery with a power supply but I can connect it in series like showed in circuit #2. If I set power supply voltage to 0V (to keep same voltage) and current limit to some value.
Would it limit the current? Can I damage power supply by doing it? If I set positive or negative voltage would it still work the same?
Best Answer
A current source is defined as high impedance has no voltage regulation with the load.
A battery is defined as a voltage source with low impedance has no current regulation with the load.
When the two are in series, you still have a current source ( or sink if on the low side)
Unless the current is limited and voltage limited to match the load exactly, you have no regulation. But this is done with LED strings designed for the CC source.