Picoscope 6424E RoadTest - Testing a power supply

RE: Picoscope 6424E RoadTest - Testing a power supply

colporteur — Sat, 10 Oct 2020 17:46:25 GMT

My lack of experience has me asking the question of the application of offset. Do you have some other practical examples it might be useful for?

Great work by the way. Proves what a tool in the right hands can do.

RE: Picoscope 6424E RoadTest - Testing a power supply

shabaz — Sat, 10 Oct 2020 16:39:02 GMT

Hi Michael,

This is awesome to see the PSU in action, and the measurements with the PicoScope!

I only have the bottom-range PicoScope ($150 or so) but nevertheless its so handy, and I'm getting used to the software over time.

I was wondering, having been burned by core losses recently, I was wondering if it will make enough of a noticeable difference if the frequency is reduced to (say) 25 kHz, if higher current output is then possible. (i.e. I just don't know if it will be significant enough to do, or if it's negligible, since ferrite datasheets don't make that easy to see).

Recently I chose a ferrite for an oscillator, and failed to get it to oscillate and later realized the material wasn't performing well (lower than expected inductance, and high core loss). Swapping it out with a different type solved that (I couldn't reduce the frequency of oscillation in my case).

RE: Picoscope 6424E RoadTest - Testing a power supply

DAB — Fri, 09 Oct 2020 19:30:14 GMT

Good test and write up.

The offset issue is a surprise, but then I have never tried to do that with my PICO scope.

DAB