I have a DC-DC converter which converts 16V to 23V. I have an output E-Cap at the end of the converter. I need to measure the ripple voltage at the E-Cap. I am using a 300MHz scope.
I connect my probe to the positive terminal of E-cap and ground the scope ground with my board ground. I am using the scope in Auto Mode.
I have sent the horizontal scale at 100mV/div and Vertical scale at 2us/div.
I see the voltage signal continuously running and at certain moments when I see the peak values, I stop the reading. I get different values at different instances. How to measure the ripple voltage now?
And how will I set the trigger point if I dont know the max ripple voltage?
Can you please help me?