Hi easy peasy thx, but how if I am paralleling big current switching? I have 5 switching modul 30a each,to get 150a in total, do I need a big watt too in using a resistor for output to load?
alternatively - use the same lengths of copper to connect to a common point - this will help current share if the output voltages are all set exactly the same ...
The aim is to create a voltage drop across each resistor. It should be the smallest amount necessary to make sure no power supply goes above 30A.
Greater voltage drop at the domineering supply. Least voltage drop at the underachiever.
It's hard to be sure what ohm value the resistors should be. Each time you try a different value it changes the distribution of current from all the power supplies.
Install diodes while experimenting, if you want to be certain no supply is forced into reverse current flow. Later you can remove the diodes.
alternatively - use the same lengths of copper to connect to a common point - this will help current share if the output voltages are all set exactly the same ...
But I think for sett the same voltages it is difficult thing peasy, coz that can be different even milivolt fault. My modul have 12volt and 30a each, this i send you the image
The aim is to create a voltage drop across each resistor. It should be the smallest amount necessary to make sure no power supply goes above 30A.
Greater voltage drop at the domineering supply. Least voltage drop at the underachiever.
It's hard to be sure what ohm value the resistors should be. Each time you try a different value it changes the distribution of current from all the power supplies.
Install diodes while experimenting, if you want to be certain no supply is forced into reverse current flow. Later you can remove the diodes.
There are supplies which are designed for paralleling.
One approach is that one acts as master while all others act as slave.
Then the master does it's regulation loop as usual and outputs it' current signal.
The slave take this current signal as setpoint input and regulate for the same current as the master.
With this, even adjustable voltage and current regulation is possible, while equal power distribution is guaranteed.