Andrew Cowan
Senior Member
I am thinking about getting a new power supply, and I am wondering, when would you want a constant current power supply?
I know LEDs want constant current, but all the power supplies I have seen have this as a feature. Is this just for testing LEDs?
I am assuming constant current means the voltage varies automatically to keep the current constant...
Or is it like a 'max current' function, where it only decreases the voltage if the current gets too high - and it won't increase the voltage if the current gets too low... If it is this, how quickly does it respond to an overcurrent situation?
Thanks,
Andrew
I know LEDs want constant current, but all the power supplies I have seen have this as a feature. Is this just for testing LEDs?
I am assuming constant current means the voltage varies automatically to keep the current constant...
Or is it like a 'max current' function, where it only decreases the voltage if the current gets too high - and it won't increase the voltage if the current gets too low... If it is this, how quickly does it respond to an overcurrent situation?
Thanks,
Andrew