| Products > Test Equipment |
| R&S HMP4040 voltage spike at PSU turn-off |
| << < (6/12) > >> |
| EEVblog:
HMP4040 mains turnoff with a 3V output, no load, just into the scope. |
| EEVblog:
Same test into a 4 ohm resistive load |
| mawyatt:
Is that the correct image with the 4 ohm load? It has the same time code and looks the same. If correct image that's over 1.5 amps at the peak of 6 volts :wtf: Best, |
| EEVblog:
--- Quote from: mawyatt on October 05, 2023, 03:03:51 am ---Is that the correct image with the 4 ohm load? It has the same time code and looks the same. --- End quote --- There was an error in the upload. But it displays ok for me now, time in the images is different. |
| electr_peter:
Images in @EEVblog posts are the same, although small thumbnail images are different. Can you reupload them? There is some forum issue if images are quickly added to several posts, happened to me as well few days ago. Reupload solved the issue. --- Quote from: EEVblog on October 05, 2023, 12:08:25 am ---HMP4040 mains turnoff with a 3V output, no load, just into the scope. --- End quote --- Ouch, maybe that is related to relay opening. Can you check voltage spike issue when output is OFF and then PSU is turned off as well? This is what sparked original topic. |
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