Hi all! How to measure the ripple current at output of power supply?
First question: Are you talking Switch Mode or Linear.
Second question: What Currents are we talking from the Secondary side.
Two basic questions. Answer them properly and we can help.
Then and then only. Ripple Currents are dependent on application.
Ripple current is relatively easy to measure on Linear supplies. I LOVE LINEAR. Reliable...always. No nasty surprises.
On SMPS, another matter altogether. You are dealing with high speed switching on them. A totally different ball game.
That is why caps dry out, explode, bulge etc on the Secondary of SMPS. They have heaps of work to do smoothing stuff at high frequency.
They run hot doing their job.
Poor buggers. That is why a 105 Degree cap is always better than a 85 Degree cap doing Secondary smoothing. Depending on Cap quality too.....
Personally, for me after years of messing about with rubbish, Rubycon is the ONLY one I trust. They make the most reliable Electrolytic out there.
Bar none.
And they cost very little more than the other rubbish available. PLUS, Rubycon wrote the book about Electrolytics..........
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