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Old 2nd Dec 2017, 5:56 pm   #35
Refugee
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Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,549
Default Re: Electrolytic capacitor fails after 1 hour in service!

Super caps come in various types.
The high ripple ones are often sold with a digital display on them for use for decoupling on automotive "axle bouncer" units with all those speaker cones that bob up and down in the boot.
Memory types will never work with more than a trickle charge. They will charge in a minute or so and hold memory for several days.
We have not yet discovered the mark/space ratio of the SMPSU that blew up the capacitor in the OP.
2 amps is 4 amps pulsed at 50%. What was it?
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