This puzzles me.
I have a couple of 9V power supplies at home. One has marked on it 300mA and the other 600mA. How can they know what type of circuit I will be connecting to, for them to arrive at a definite current rating? I mean isn't the total current relative to the total resistance in the circuit? (I=V/R)
So what is the difference between a 9V 300mA power source and a 9V 600mA power source?
Thanks for any help in understanding this!
I have a couple of 9V power supplies at home. One has marked on it 300mA and the other 600mA. How can they know what type of circuit I will be connecting to, for them to arrive at a definite current rating? I mean isn't the total current relative to the total resistance in the circuit? (I=V/R)
So what is the difference between a 9V 300mA power source and a 9V 600mA power source?
Thanks for any help in understanding this!