Determine the output voltage ripple

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The discussion focuses on measuring the output voltage ripple from a digital oscilloscope reading of 25.0007V. Participants highlight the importance of identifying the peak-to-peak ripple voltage as the voltage stabilizes. There are suggestions to zoom in on the ripple during the startup phase for better visibility. Adjusting the oscilloscope settings to block DC while allowing AC is recommended for accurate measurement. Overall, the conversation emphasizes the need for careful setup to capture the ripple voltage effectively.
ToonBlue
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Homework Statement


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Homework Equations

The Attempt at a Solution


This is my load voltage output from my digital scope.
From the digital scope , my output voltage is 25.0007V but how do I find the ripple voltage from the given data?
 
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Yikes! That's a heck of an overshoot on startup that you have there, Scooter! :woot:

The ripple is the peak-to-peak ripple voltage that you see as the voltage is stabilizing. Can you zoom in on that ripple near the end of the startup?
 
ToonBlue.. Are you asking how to set up the scope to measure the ripple accurately?

The problem is that you can't just turn up the gain because the 25V DC offset will send the trace off the screen, probably further than the zero adjust will cope with.

We aren't allowed to just give you the answer but have a think how you might change the scope settings to block DC but allow AC.
 

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