- #1
PainterGuy
- 940
- 69
Hi
While helping me with the queries please don't forget that I'm a beginner to this technical stuff (or, my knowledge of this area of knowledge is nothing more than beginner's! :) ).
I'm trying to understand how simple lab current source and voltage source works without getting into too much technical details of their operations.
This lab power supply (variable voltage/current source):
http://img810.imageshack.us/img810/4475/powersupplycurrent.jpg
can deliver maximum 30V and 3A. The funny thing is in the picture it is delivering 4.45A which is more than the maximum rated value for the current. But I think I'm interpreting the meaning of maximum rated value wrongly. I think by "30V/3A" it means when voltage is set at 30V then the maximum current you could get is 3A. In other words, the maximum power the power supply could deliver is: Power = 30V x 3A = 90W. So, if you are using the supply as a constant current source and the current being delivered is 10A, then the maximum voltage it could produce would be 9V.
Please correct me. Thank you. BTW, you may wonder why I don't confirm this by experimenting with the supply itself, well, I don't have access to that supply.
Cheers
While helping me with the queries please don't forget that I'm a beginner to this technical stuff (or, my knowledge of this area of knowledge is nothing more than beginner's! :) ).
I'm trying to understand how simple lab current source and voltage source works without getting into too much technical details of their operations.
This lab power supply (variable voltage/current source):
http://img810.imageshack.us/img810/4475/powersupplycurrent.jpg
can deliver maximum 30V and 3A. The funny thing is in the picture it is delivering 4.45A which is more than the maximum rated value for the current. But I think I'm interpreting the meaning of maximum rated value wrongly. I think by "30V/3A" it means when voltage is set at 30V then the maximum current you could get is 3A. In other words, the maximum power the power supply could deliver is: Power = 30V x 3A = 90W. So, if you are using the supply as a constant current source and the current being delivered is 10A, then the maximum voltage it could produce would be 9V.
Please correct me. Thank you. BTW, you may wonder why I don't confirm this by experimenting with the supply itself, well, I don't have access to that supply.
Cheers