Saturday, 26 November 2016

resistors - Limiting current from a 5v power supply




Possible Duplicate:
Choosing power supply, how to get the voltage and current ratings?



I have a 5V / 1A regulated supply. I'm thinking of using it to power a PCB which asks for 5V and 0.25A.


In this case, I am thinking the power supply could be too powerful and damage the board.... My best guess is to put a resistor in parallel with the load, so 3/4 of the current goes through the resistor, and the rest goes through the board.



Any ideas?




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