I’m working on a simple power supply using a DKE15A-12. I got a fuse and reverse polarity protection in, but I’m wondering if I need filtering caps on the input and the output.
I did some tests but even a 10uF capacitor didn’t seem to make much difference. (my oscilloscope is very cheap though).
I combed through other similar schematics and they don’t use any caps either.
What load did you use during your test apart from the oscilloscope?
According to the datasheet it only has 60mV output ripple, so I guess you don’t need any additional caps.
I used a couple of modules for load and measured around 20mv of output ripple. I’m guessing that 60mv is worst case scenario at full load. I was able to get it down to 10mv with chonky 470uF capacitors, but that doesn’t seem worth it. Going to keep it simple.
Why not? That’s a significant reduction in your noise floor for a couple of dollars worth of components. If vertical space is the issue, it looks like you could bend the legs so that they mount almost horizontally.
