The same voltage power supply in parallel, in each power supply in series with a very small resistor can balance the current, what is the principle? Several power supplies of the same voltage are connected in parallel to provide large current. A small resistor in series on each power supply can balance the current. What is the principle? Now I also want to prevent one of the power supplies from breaking down and affecting other power supplies. Therefore, a diode is connected to each power supply, and the diode also has a certain resistance. Can it not only prevent the current from flowing back, but also balance the current? Can diode be connected in series instead of resistor? I know that the purpose is to prevent the current from flowing back, but what is the principle to facilitate my future use,

The same voltage power supply in parallel, in each power supply in series with a very small resistor can balance the current, what is the principle? Several power supplies of the same voltage are connected in parallel to provide large current. A small resistor in series on each power supply can balance the current. What is the principle? Now I also want to prevent one of the power supplies from breaking down and affecting other power supplies. Therefore, a diode is connected to each power supply, and the diode also has a certain resistance. Can it not only prevent the current from flowing back, but also balance the current? Can diode be connected in series instead of resistor? I know that the purpose is to prevent the current from flowing back, but what is the principle to facilitate my future use,

It can prevent current backflow, but it can't balance the current, so we need to add a small resistance. The purpose of adding a small resistance is to prevent the higher voltage of some power sources from causing the current recharge to the lower voltage power sources

When the circuit is closed, the load resistance increases and the power supply voltage decreases,

Load resistance increases -- >
The total resistance of the circuit increases
The total current of the circuit decreases
The voltage at both ends of the resistance inside the power supply becomes smaller
So you are right to say so

When the load of the power supply increases, the total resistance of the circuit will certainly increase

If the load is in series, the total resistance of the circuit increases
In case of parallel load, the total resistance of the circuit decreases