Ishita Kedari

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7 years, 4 months ago.

power supply design for lpc1768

/calculation of 3.3 volts power supply for lpc1768? how to calculate load current when interfacing with multiple loads?

1 Answer

Andrea Corrado
7 years, 4 months ago.

Ishita,

Thanks for the question.

So this is a relatively easy task. In essence what you need to do is place a low value shunt resistor(10mohm-1ohm) in series with your 3.3V supply and the rest of your loads. And then measure the voltage across this load to retrieve the current. I=V/R.

Have a look here for more information:

http://www.measurementest.com/2010/08/how-to-measure-current-using-shunt.html

Regards,

Andrea, team mbed