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PostPosted: Thu Nov 25, 2021 3:17 am 
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Joined: Tue Oct 25, 2016 8:36 pm
Posts: 6
I'm trying to do a power analysis on my target, which runs on 3.3 volts. Without the resistor, the average current while running is roughly 140mA.
I used a 10 Ohm resistor a shunt resistor with a 5V power source. The voltage difference between VCC PIN and GND was measured using a shunt resistor linked between 5V and the target VCC pin. (The decoupling capacitors have been removed.) On the other hand, the oscilloscope lacked a proper power consumption line.
Is there a problem with my setup? Is there any guidance on how to choose a shunt resistor?
Thank you so much for your assistance!


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