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testing power supply ripple?

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Re: testing power supply ripple?

Postby Pentium » August 13th, 2013, 3:22 pm

Thanks c_hegge :D for some reason I'm not getting any reading, I have the probe set to 1X, measure to VPP, time in 5ms, and display voltage at 120mV
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Re: testing power supply ripple?

Postby c_hegge » August 13th, 2013, 5:37 pm

Connect it to the 12V output with the power supply powered off. When you turn it on, you should see a 12V spike as it powers on. If you can't see that, then it sounds like a contact issue.

One other thing you could try is changing the coupling setting. I can't remember off the top of my head whether it needs to be AC or DC (although I think it might be AC)
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Re: testing power supply ripple?

Postby Pentium » August 13th, 2013, 7:05 pm

Okay cool I will try that when I go into work tomorrow! Maybe change the time setting to something like 20ms?
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Re: testing power supply ripple?

Postby c_hegge » August 13th, 2013, 7:54 pm

I use 20mS/Div on mine (which is 200mS for the entire display).
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